124

UN IVERSIT Y OF CA LI FORNIA, DA VIS

AGilONDMY PllDGilESS JlEJ)ORT Agricultural Experime nt Station

CALIFORNIA RICE VARIETIES: Description and Perforrmnce Summary of the

1980 and Multi-Year Statewide Rice Variety Tests in California

Cooperative Extension

August 1982

J. E. Hill, L.A. Post, S.c. Scardaci, J. F. Williams, C. M. Wick, M. Canevari and B. Weirl

Acknowledgment:

The authors are grateful to the Rice Research Board for their financial support of the University of California Cooperative Extension Rice Variety Adaptation Project. Huch of this work was made possible through these funds. Additionally, the authors are indebted to Drs. H. L. Car­nahan, C. W. Johnson, and S. T. Tseng, CCRRFI rice breed­ers, who developed most of the cultivars and provided seed for the tests. They also conducted tests of all maturity groups at the Rice Experiment Station in Butte County. We also recognize the contributions of Dr. J. N. Rutger, USDA-SEA rice geneticist, who has developed much of the germplasm used in the breeding of these lines. Lastly, the authors are indebted to the many growers who provided land and facilities for these studies.

UNJVCRSITY OF CALIFORN IA DAVIS

MAR 1 81983

Sf!t REC. - LIBlUl~Y

1Extension Agronomist and Staff ResearCh Associate, Agronomy and Range Science Jxtension, U .c. Davis and Fann Advisors in Colusa, Sutter-Yuba, Butte., San

oaqu1n and Merced counties, respectively.

'1

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Introduction

The California rice variet¥ improvement program is a cooperative arrange­nt of the California Cooperative Rice Research Foundation, Inc. and the

~;ted states Department of Agriculture, the Universizy of California, and ~e rice i ncilstry. CCRRFI rice breeders develop rice varieties and gennp lasrn ior new cultivars. Similarly the USDA rice geneticist stationed at U.C. Davis

develops gennplasm an~ new varieties. The University of California Cooperative Extension, consisting of the statewide specialist and staff research associate at u.c. Davis and local county fann advisors, conducts on-farm field tests of new cultivars to detennine their adaptation to the primary areas of rice pro­duction in California. The program is financially supported, in part, by the Rice Research Board. Rice growers provide land and production inputs required for the tests.

This report describes the results of the 1980 regional rice varieey test­ing program. This inforf!Btion on varietal perform1nce is used by the CCRRFI and USDA rice breeders to : 1) detennine the suitability for varietal release and 2) to make decisions on further developnent of experinental lines. The infonnation also provides factual data from which rice growers can detennine the most suitable varieties for their specific areas of the state.

Naming System for Publicly Developed Rice Varieties in California

In 1979, the California rice incilstry developed a uniform naming system for new, publicly developed rice varieties, based on grain cype, maturity group and varietal release position (Table 1). This system resulted from the large nurrber of varieties being released and will be useful in varietal identi­fication in the incilstry's production, harvest, drying, storage, milling and marteting phases. For example, the maturizy designation should prevent too early and/or too late seeding of specific varieties; the grain type desig-~a­tion should prevent mixing; and the release position nurrber shows whether a variety was released before or after others in the same grain type and matur­ity group. It is essential to refer to new varieties by their complete name because deleting any component will lead to serious errors. Variet;y na.es assig~~ecl before 1979 will not be cllanged.

The System

Names of new varieties contain a prefix letter designating their grain type as either long (L), medium (M) or short (S). Speciality rices will, i~stead, carry a descriptive word prefix, such as Calmochi for waxy (sweet) rlce varieties. Immediately following the prefix is a series nurrber desig­nating the maturity group of the varieey as either very early (lOO's), early ~~OO's), intermediate (300's) or late (400's). This nurrber is separated from

e prefix by a dash (-}. The last two digits of the name (01 to 99} desig­nate the relative order of release within a grain type and maturicy group. ~examples, the name L-201 would describe a long-grain, early maturi1;y rice

riety that is the first of its group. The name S-315 (which does not yet !S~t) would describe a short-grain, intennediate maturi1;y rice that was the I release in its category.

•Names and brief descriptions of the publicly developed varieties are ted i n Tab 1 e 2 •

-1-

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Table 1. The new California rice variezy naming system.l

Grain

Short (S) S-1 01 to S-199 S-201 to S-299 S-301 to S-399

Medium (M) M-101 to M-199 M-201 to M-299 M-301 to M-399

Long (L) L-1 01 to L-199 L -201 to L -299 L-301 to L-399

Waxy (sweet) Calmochi -101 to Calmochi -201 to Calmochi-301 to c a 1100 chi -1 99 C a lnnch i -299 C alnnchi -399

lNames assigned to varieties before 1979 will not be changed.

Exgerimental Procedure for the 198 Regional Rice Variety Tests

S-401

M-401

L-401 to l-499

Calmochi-401 to C a 1 m>ch i -499

A total of 11 uniform rice variety tests were conducted in eight locations from Butte to Merced County. Twen~-four cultivars including currently grown "standards" and experi n-enta 1 lines were planted in each of three rna turf~ classes for a total of 72 entries. Three tests, one of each maturity group, were conducted at the Rice Experiment Station in Biggs by the CCRRF plant breeders H. L. Carnahan, c. W. Johnson and S. T. Tseng. The remaining tests were carried out under a diversity of conditions using the ~pical cultural practices for the grower and location in order to test agronomic performance under a wide range of production practices and locations. Varietal entries were selected and prepared by the CCRRFI-USOA-UC rice genetics and breeding program. The tests were divided into maturizy groups as follows:

Very Early Maturity Grou~ - Three uniform tests were conducted; at the Rice Exper1 ment Stab on (But e Coun~), the Den-eter Corporation (Sacran-ento County) and the Paul us Ranch (San Joaquin County). Twen~-four 1i nes were included in each test.

Early Maturity Grou~- Four uniform tests were conducted; at the Rice Exper1n-ent Stabon (But e County), Mohammed Ranch (Yuba Coun~), Geer Ranch (Yolo County) and Skinner Ranch (Butte County). Twen~-four lines were in­cluded in each test.

Late Maturi Grou - Four uniform tests were conducted; at the Rice Exper1n-ent tat1on Butte County), Wylie Farming (Glenn Coun~), Galloway Ranch (Sutter County) and 0 'Bani on Ranch (Merced Counzy). The Merced County test was partially overseeded w1 th the field variety and the data are not reported here. Twenty-four lines were included in each test.

Mature grain was harvested with a Massey-Ferguson 39 rice combine for yield determination. A 7 X 20 foot swath (0.0032 acre) was harvested for the yield sample in off-station tests and a 10 X 20 foot swath (0.0046 acre) was harvest­ed with an Allis-Chalmers combine at Biggs. Grain was subsampled for m>isture determination at harvest and grain yield adjusted to 14 percent m>isture.

-2-

\' , 1

'9

9

to

perfonnance characteri sties of each varietal entry m:asured at each loca-·on were seedling vigor, days to 50 percent heading, plant height, lodging t~ rain yield at 14 percent moisture. Seedling vigor was subjectively a tea by visual observation on a scale of 1 (poor) to 5 (excellent), 23 to 28 ~~s after planting. Seedling vigor as detennined in these tests is a measure f the ability of an adequate nurrber of seedlings to em:rge through water in

0 given period of time: Oeys to 50 p:rcent heading was detennined by v~sual a bservation. Plant he1 ght was deterrm ned at harvest by randomly neasun ng ~he culm length from soil surface to the tip of the panicle. Plant lodging was rated visually at harvest on a scale of 1 (no 1 odgi ng) to 9 (all plants lodged) and is reported as such . This method does not characterize time of lodging ~ich is nnre highly correlated with grain yield. Lodging after field drainage does not reduce rice grain yield as significantly as lodging into the water before substantial seed de vel opnent.

Agronomic Performance Summary of 1980 and Multi-Year Varietal Entries by Maturity Group

varietal perfornance sumnari es are presented by nat uri ty group. .Results of 1980 tests are presented by location for each maturity group followed by an over-location summary and a multi-year and multi-location grain yield summary. The multi-year and multi-location grain yield summaries contain only camrerci al or potential varieties. Selection of entries for the multi -year and multi-location grain yield summaries was based upon availability of data and superior yield perfornance. Grain yields of promising varieties and experi­mental lines also are reported as a percentage of check varieties in each maturity group for comparative purposes. These percentage yield ca.parfsons are based on equivalent location and year ~~eans and my not reflect the ~nean yield of a particular varfe~ over all locations and years.

SuiiiTiary of the Very Early Rice Variety Tests(<90 days to Sot Heading at Biggs)

Two of the very early tests \'Ere located in cool areas (Natomas, Sacranento Crunty; near Escalon, San Joaquin County) and one in a warm area (Biggs, Butte County). Agronomic perfornance of the 24 cultivars for the Biggs, Escalon and Natomas test sites are given in Tables 3, 4 and 5, respectively. Three entries, nurrbers 1, 5 and 24, were destroy~d by rats in all replications of the Nato~s test site. Table 6 gives the three-location summary for the 21 culthars ex­clud;ng entry nurrbers 1, 5 and 24, and Table 7 shows the two-location sununary for all 24 cultivars for the Biggs and Escalon trial sites. Yields were lower at the Escalon test site as a result of a se~re infestation of smallflo\IEred umbrellaplant. This weed appeared to be more competitive against short­statured entries Whereas Earlirose, the only tall cultfvar, produced the high­est yield at this location.

In 1980, seven of the eleven highest yielding entries in this group were short-grain types (Tables 6 and 7). These results are similar to 1979 Where four of the eight highest yielding entries were short-grain lines. 79-y-15 and 79-y-25 short-grain culti vars have produced consistently well in 1979 and 1980. 79-y-103, a medium-grain, produced the highest yield of approximately 81 cwt as an average over all 1 ocati ons in the 1980 very early tests.

Table 8 shows the multi-year and multi-location summary for the very early varieties. Under optimum conditions of fertil11;y and weed control at the Biggs location M-101 clearly out-yielded Earli rose, whereas at the Esca1 on

-3-

II I

I I

site where these conditions wer~ less than o~timum for M-101, Earlir?se pro~ duced the greater yield. M-9 y1elded approx~mately the sa~e as Earl1rose whereas s-201 and L-201 produced a greater y1el d than Earl1 rose.

sumrnary of the Early Rice Variety Tests {90-99 Days to 50% Heading at Biggs) --Four uniform variety tests were conducted at the locations previously

noted. Two of these tests were located in the warm Butte County area whereas the northern Yolo County test site was in a relatively cooler area. The re~1 ing test was conducted in the "red" soils of District 10, Marysville. •·

Agronomic performance of the 24 early cultivars is shown in Tables 9, 10, 11, and 12 for each respective location. Table 13 shows the over location summary for all 24 cultivars. The long-grain L-201 was the hi~est yielding cultivar over all locations averaging 87 cwt in 1980. Ten lines or varieties yielded s i 91ificantly more than t~-9 while nine more {although not statistically significant) produced greater yields than M-9. S-201 ran<ed seventh. The tall variety S-6 was si91ificantly lower than 20 other lines or varieties. 79-y-40, a short-grain ran<ing fourth in yield in 1980, was the highest yield­ing in 1979 and is a possible candidate to become variety S-202. 79-y-44, the highest yielding medium-grain in 1979, ran<ed sixth overall and second as a medium-grain and is being increased for Foundation seed as a possible variety r~-201 • •

Table 14 gives the multi-year and multi-location summary.

The overall performance indicated that a 11 short-statured culti va rs pro­~ced greater yields than the tall types S-6 and Calmochi 201. 78-y-186 {79-y-44), a medium grain entry, and candidate for M-201, was considerably higher in yield than M-9 over six locations-years average.

Summary of the Intermediate {97-140 days to 50% Headding at Biggs) and Late Rice Var;ety Tests (>105 Days to 50$ Heading at e;ggs)

Four uniform tests were conducted at the 1 ocations previously described. Although these tests were all in relatively warm environnents, they were geo­graphically distributed throughout areas W'lere long-season rice varieties are produced. The Merced County location was contaminated with the field variezy and the data is not included in this report. The performance data for the 24 late maturing entries is shown in Tables 15, 16, and 17 for each of the remain­ing three locations. The overlocation summary for this later maturity groop is given in Table 18.

Eleven entries produced greater yields than M-7. Four of these were sig­nificantly superior, producing over 10,000 pounds of dry rice per acre. EntrY 79-y-73 topped yields in the late maturity tests for the second consecutive year. Entry 79-y-68, a possible replacement for M-7, has been consistently high yielding in 1979 and 1980 and if approved for certification, would be named M-401. This entry showed ITOre lodging than other short-statured cultf­vars but better abil;ty to stand than the tall M-5 check variezy. Most experimental lines yielded greater than M-301 and Calrose 76 and all were improved over the tall M-5.

Table 19 gives the multi-year and multi-location summary. All short statured varieties show considerable yield improvement over the taller typesld

.. 78-y-64 {79-y-68), a medium grain entry and candidate for M-401, shows a yie advantage of 300 1 bs per acre over M7 11 1 ocations-years average.

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Table 3. Perfortmnce summary of very early rice experinental lines and varieties, Butte County, 1980.

1980 Grain Days to entry Grain yield @ Seedling 50% no. 1 14% moisture vi r2 headi

1 bs/acre

6 79-y-8; 8 s 10170 4.6 89 85 1.0 7 79-y-10;10 M 10110 5.0 89 94 2.3

23 79/21020 s 10070 4.5 90 93 1.5 4 S-201 s 10010 4.7 96 90 1.0

15 79-y-103 M 9930 5.0 88 95 2.3 18 79-y-133 M 9760 4.8 90 93 2.8 13 79-y-25 s 9640 4.6 93 80 1.0 8 79-y-15 s 9630 4.9 88 96 4.3

10 79-y-19 M 9530 4.9 91 94 1.3 17 79-y-117 M 9400 5.0 90 92 2.3 22 79/6937 s 9370 4.5 90 96 1.3 24 79/10716 s 9340 5.0 85 95 2.3 9 79-y-16 M 9220 4.7 90 91 5.0

11 79-y-21 s 9170 4.8 83 .95 4.3 16 79-y-108 M 8970 5.0 88 92 4.5

2 M-9 M 8870 4.9 91 97 6.0 14 79-y-27 ~1 8760 5.0 91 101 4.5 1 M-101 M 8620 5.0 85 93 3.3

20 79-y-136 M 8450 5.0 91 102 4.8 12 79-y-23 M 8430 5.0 91 92 3.0 5 79-y-4 s 8100 4'.8 81 88 8.8

21 79-y-147 M 8080 5.0 89 98 7.0 19 79/8593 ~1 7520 5.0 90 90 9.0 3 Earl i rose M 6460 5.0 92 126 9.0

Grand r~ean 9070 4.9 89 94 3.8

LSD .05 1200 0.2 2.0 5.5 2.8

c.v. (%) 9.4 3.4 1.6 4.2 52.5

Conducted by the Rice Experiment Station, Biggs. ls = short, M = medium. 2subjective rating of 1-5, where 1 = poor and 5 = excellent emergence at 28 DAP.

3subjective rating of 1-9, where 1 = 10% and 9 = 100% lodged.

-6-

rab 1 e 4. Performance summary of very early rice ex peri .rental lines and I I

varieties, San Joaquin County, 1980.

1980 Grain Days to entry Variety Grain yield @ 50% Plant no. description tyEel 14% moisture heading height Lodging2 -- 1 bs/acre em '.t

3 Earlirose M 7000 105 107 7.0 22 79/6937 s 6500 104 69 1.0 15 79-y-103 M 6270 100 75 1.0 24 79/10716 s 6040 98 67 1.5 11 79-y-21 s 5800 98 75 1.0 13 79-y-25 s 5780 107 61 1.3 8 79-y-15 s 5620 105 72 1.0

17 79-y-117 r-1 5330 106 65 1.3 20 79-y-136 H 5230 104 75 1.0 2 r~-9 '~1 5220 106 71 . 1.3

16 79-y-108 ~1 5110 103 69 1.0 14 79-y-27 M 5100 105 72 1.0 4 S-201 s 5070 108 68 2.0 7 79-y-10;10 M 5020 105 72 1.0

18 79-y-133 M 4940 104 66 1.3 21 79-y-147 M 4849 106 67 1.3 12 79-y-23 H 4800 104 67 1.3 1 t~-1 01 ' M 4770 97 71 1.8 9 79-y-16 M 4660 106 68 1.5

19 79/8593 M 4430 106 66 1.3 23 79/21020 s 4420 107 70 1.8 10 79-y-19 M 4360 107 70 2.0 6 79-y-8; 8 s 4060 107 67 1.5 5 79-y-4A s 3870 92 70 2.5

Grand Mean 5180 104 71 1.6

LSD .05 820 2. 1 5.5 1.4

c. v. (%) 11.2 1.5 5.5 61.2

Cooperator: Paulus

Planting date: May 13, 1980 ls = short, M = medium. 2Subjective rating of 1-9, where 1 = 10% and 9 = 100% lodged.

-7-

Table 5. Performance summary of very early rice ex peri nental lines and varieties, Natomas, 1980.

1980 Grain Days to entry Variety Grain yield @ 50% Plant no. desc ri pt ion tlEel 14% moisture heading height Lodging2

II 1 bs/acre em %

8 79-y-1 5 s 8790 99 89 1.3 4 S-201 s 8680 107 78 3.3

21 79-y-147 M 8520 102 85 6.8 3 Earlirose r~ 8470 103 116 9.0

10 79-y-19 r~ 8320 104 80 1.0 19 79/8593 M 8290 lOS 83 1.3 12 79-y-23 M 8280 102 83 1.3 15 79-y-103 ~~ 8180 99 87 1.0 17 79-y-117 M 8100 102 78 1.3 11 79-y-21 s 8030 100 84 1.0 22 79/6937 s 8030 102 84 7.3 23 79/21020 s 8010 101 81 1.3 9 79-y-16 !4 7990 103 84 1.0 2 ~~-9 M 7980 102 83 1.3

20 79-y-136 M 7980 103 88 1.3 6 79-y-8; 8 s 7950 105 80 1.0

13 79-y-25 s 7930 103 74 1.0 7 79-y-10; 10 M 7750 102 80 1.0

14 79-y-27 M 7610 100 82 1.0 16 79-y-108 ~~ 7360 102 81 1.0 18 79-y-133 M 7150 103 82 1.0 243 79/10716 s 6630 100 79 1.3 13 M-101 ~~ 3520 97 84 1.0 s3 79-y-4A s 2050 96 81 1.0

Grand Mean 7570 102 83 2.0

LSD .05 890 1.7 4.3 0.6

c.v. (%) 8.4 1.2 3.7 19.7

Cooperator and 1 ocation: Deneter Corporation, Natomas.

Planting date: May 1 5 , 1980 •

ls = short, M = medium.

2subjective rating of 1-9, where 1 = 10% and 9 = 100% lodged.

3severe rat damage occurred in all replications of this entry •

.. -8-

Tab 1 e 6. Performance summary of very early rice experimental lines and varieties, means of three locations in 1980.

1980 Grain Days to entrY Variety! Grain yield @ Duncan's 50% Plant no. desc ri pti on type2 14% moisture test heading height Lodging3

1 bs/acre an ex,

15 79-y-103 M 8130 a 95 85 1.4 8 79-y-15 s 8020 ab 97 86 2.2

22 79/6937 s 7970 abc 99 83 3.2 4 S-201 s 7920 abed 103 79 2. 1

13 79-y-25 s 7780 abc de 101 72 1.1 11 79-y-21 s 7670 abc de 93 85 2. 1 7 79-y-10;10 M 7630 abc de 98 82 1.4

17 79-y-117 M 7610 abc de 99 78 1.6 23 79/21020 s 7500 abc de 99 81 1.5 10 79-y-19 M 7400 be de 100 81 1.4 6 79-y-8; 8 s 7390 bcdef 100 77 1.2 2 M-9 M 7360 cdef 100 84 2.8 3 Earl i rose M 7310 def 100 116 8.3 9 79-y-16 r~ 7290 def 100 81 2.5

18 79-y-133 ~1 7280 def 99 80 1.7 20 79-y-136 M 7220 ef 99 88 2. 3 12 79-y-23 M 7170 ef 99 81 1.8 14 79-y-27 ·~ 7160 ef 98 85 2.2 21 79-y-147 M 7150 ef 99 83 5.0 16 79-y-108 M 7150 ef 98 81 2.2 19 79/8593 M 6750 f 100 80 3.8

Grand Mean 7470 99 83 2.5

LSD .OS for varieties 540 1.1 2.9 l.l LSD . OS for variety X

location 930 2.0 5.0 1.8

c.v. (%) 9.0 1.4 4.3 53.6

!Excluding entries 1, 5 and 24 due to rat damage at the Natomas test site. 2s = short, N = medium. 3subjective rating of 1-9, where 1 = 10CX, and 9 = 100% lodged.

-9-

Tab 1 e 7. Performance summary of very early rice experinental lines and varieties, means of two locations in 1980.

1980 Grain Days to entry Grain yield @ Duncan's 50% no. el 14% moisture test headi

1 bs/acre

15 79-y-103 f•1 8100 a 94 85 1.6 22 79/6937 s 7930 ab 97 83 1.1 13 79-y-25 s 7710 abc 100 70 1.1 24 79/10716 s 7690 abc 92 81 1.9 8 79-y-15 s 7630 abc 97 84 2.6 7 79-y-10;10 H 7560 abed 97 83 1.6 4 S-201 s 7540 abed 102 79 1.5

11 79-y-21 s 7490 abc de 91 85 2.6 17 79-y-117 M 7360 abc de 98 79 1.8 18 79-y-133 M 7350 abc de 97 79 2.0 23 79/21020 s 7250 abcdef 98 81 1.6 6 79-y-8;8 s 7110 bcdef 98 76 1.3 2 f·1-9 M 7050 cdef 99 84 3.6

16 79-y-108 M 7040 cdef 96 81 2.8 10 79-y-19 M 6950 cdef 99 82 1.6

9 79-y-16 M 6940 cdef 98 80 3.3 14 79-y-27 M 6930 cdef 98 86 2.8 20 79-y-136 M 6840 cdef 97 88 2.9 3 Earl i r·ose ~1 6730 defg 98 117 8.0 1 ~1-101 t~ 6700 defg 91 82 2.5

12 79-y-23 M 6610 efg 98 79 2.1 21 79-y-147 '~ 6470 fg 97 82 4.1 5 79-y-4A s 5980 9 86 79 5.6

19 79/8593 M 5970 g 98 78 5. 1

Grand Mean 7120 96 83 2.7

LSD .05 for varieties 720 1.4 3.9 1.6 LSD .05 for variety x

location 1020 2.0 5.5 2.2

c.v. (%) 10.2 1.5 4.7 58.2

ls = short M , medium. 2subjective rating of 1-9, where 1 = 10% and 9 = lOot lodged.

-10-

Grain yield summary of very early ll\'lturing rice varieties and experi-mental lines by location and year. 1978-1980.

Varieties and ExEerimental Lines Year £ar1irose ~-9 A-101 C-201 S-201 78-y-119

1978 5320 7250 7400 8500 1979 7320 7470 8040 9340 9050 8990 1980 6460 8870 8620 10010 9630

Location rrean 6370 7860 8020 8920 9530 9310

sacrarento 1978 6850 7480 7500 6600 1979 8730 8070 7620 8810 8800 9480 1980 8470 7980

__ 2 8680 8320

Location rrean 8020 7840 7560 7705 8740 8900

san Joaquin 1978 7320 7150 6530 6840 1979 7830 7020 6630 6470 6280 6990 1980 7000 5220 4770 5070 4360

Location mean 7380 6460 5980 6660 5680 5680

Over 1 ocat ion-years rrean 7260 7390 7140 7760 7980 7960

Yield as % Earlirosel 100 102 100 107 104 104

Nunber of tests 9 9 8 6 6 6

lsased on equivalent location-year means and may not reflect mean of all locations and years for Earlirose.

2M-101 destroyed by rats at this location and year.

-11-

Tab 1 e 9. Performance summary of early rice experiment lines and varieties, Butte County, 1980.

1980 Grain Days to entry Variety Grain yield @ Seedling 50% Plant no. description typel 14% moisture vigor2 heading height Lodging3

1 bs/acre em %

38 79-y-43 M 10450 5.0 95 94 1.0 45 79-y-241 M 10200 4.7 93 93 1.0 46 79-1661 s 10190 4.8 101 99 2.8 48 79-1668 s 10160 5.0 97 90 1.0 39 79-y-14 r-1 10080 4.4 91 87 1.0 31 L-201 L 10060 4.4 91 104 1.0 35 79-y-20 M 10030 4.9 93 94 1.0 37 79-y-40 s 9960 5.0 95 89 1.5 41 79-y-167 s 9940 5.0 97 93 1.0 47 79-1665 s 9800 4.7 96 .95 2.3 44 79-y-220 s 9750 5.0 96 91 1.0 30 S-201 s 9730 5.0 94 90 2.8 50 79-y-54 L 9640 4.8 100 87 1.0 34 79-y-18 s 9500 5.0 96 93 1.3 40 79-y-51 M 9500 4.9 91 95 1.0 43 79-y-217 M 9430 4.9 98 91 2.3 36 79-y-37 s 9280 4.8 97 96 2.0 51 79-y-253 L 912{) 4.4 89 107 5.0 52 79-y-254 L 8720 4.9 91 93 1.3 42 79-y-196 M 8540 5.0 89 93 3.0 32 M-9 M 8380 4.8 89 99 5.3 33 M-101 M ~20 4.6 85 87 3.5 49 79/14150 M 7750 5.0 89 92 5.5 29 S6 s 6880 4.9 96 120 7.3

Grand t~ean 9390 4.8 94 95 2.3

LSD .05 1050 0.2 2.2 6. 1 2.5

c.v. (%) 7.9 3.3 1.7 4.6 75.7

Conducted by the Rice Experiment Station, Biggs.

ls = short, ~1 =medium, L =long. 2subjective rating of 1-5, where 1 = poor and 5 = excellent emergence at 28 DAP.

3subjective rating of 1-9, where 1 = 10% and 9 = 100% lodged.

-12-

e 10. Performance summary of early rice ex peri nEntal lines and varieties, Butte County, 1980.

Grain Days to Variety Grain yield @ 50'.t

descri ti on 1 14'.t moisture headin 2

1 bs/acre an '.t

51 79-y-253 L 8760 97 113 3.0 31 L -201 L 8590 97 108 3.8 39 79-y-44 ~~ 8250 99 85 1.0 37 79-y-40 s 8230 99 93 1.8 41 79-y-167 s 8020 98 91 1.0 30 S-201 s 7770 97 88 2.0 43 79-y-217 M 7750 100 85 1.0 44 79-y-220 s 7730 97 84 1.5 47 79-1665 s 7690 92 B8 2.0 50 79-y-54 L 7650 102 84 1.0 35 79-y-20 M 7640 98 89 1.0 29 56 s 7580 100 116 7.5 38 79-y-43 t~ 7550 99 90 1.3 46 79-1661 s 7470 100 90 1.0 48 79-1668 s 7410 98 88 1.0 36 79-y-37 s 7350 101 91 1.0 34 79-y-18 s 7220 97 81 1.0 49 79/14150 M 7210 94 89 4.0 52 79-y-254 L 7210 95 93 2.3 32 M-9 M 7080 96 94 5.5 40 79-y-51 r~ 6940 95 86 1.8 45 79-y-241 M 6820 99 90 1.5 33 M-101 M 6810 89 78 3.8 42 79-y-196 M 6490 95 94 3.3

Grand r~ean 7550 97 91 2.2

LSD .05 530 4.8 7.7 2.0

c.v. ('.t) 5.0 3.5 6.0 63.1

Cooperator and location: E. Skinner, Butte County. Planting date: April 28, 1980. 1s = short, M = medium, L = long. 2Subjective rating of 1-9, where 1 = lO'.t and 9 = lOO'.t lodged.

-13-

Tab 1 e 11. Performance summary of early rice experitrental lines and varieties, Yolo Collnty, 1980.

1980 Grain Days to entry Variety Grain · yield @ Seedling 50% Plant no. description tyEel 14% moisture vigor2 heading height Lodging3

1 bs/acre em %

37 79-y-40 s 9580 3.7 106 93 2.8 30 S-201 s 9360 3.3 106 91 3.0 38 79-y-43 M 9070 3.3 107 96 3.0 51 79-y-253 L ~70 3.1 109 103 1.0 31 L-201 L 8970 3.6 108 101 2.0 41 79-y-167 s 8950 3.2 106 95 3.5 44 79-y-220 s 8870 3.6 106 93 4.3 32 M-9 M 8750 3.2 104 94 5.0 34 79-y-18 s 8510 3.7 107 91 5.0 35 79-y-20 M 8490 3.5 106 93 1.3 39 79-y-44 M 8440 3.1 107 '88 1.0 45 79-y-241 M 8180 3.2 106 94 1.0 47 79-1665 s 8050 3.2 106 93 4.3 40 79-y-51 M 8030" '3.6 105 93 4.0 52 79-y-254 L 7920 3.3 103 93 1.0 48 79-1668 s 7900 3.6 107 92 1.0 43 79-y-217 M 7790 3.0 108 91 1.0 49 79/14150 M 7770 3.0 106 90 6.3 46 79-1661 s 7740 3.7 110 95 3.3 36 79-y-37 s 7710 3.2 107 96 2.8 29 S6 s 7360 3.2 108 126 8.8 42 79-y-196 M 7330 3.8 104 95 3.3 50 79-y-54 L 7170 2.7 110 91 1.0 33 M-101 /DO-1 M 6950 2.9 100 91 7.5

Grand i~ean 8250 3.3 106 95 3.2

LSD • 05 1100 0.4 2 4.7 3.3

c.v. (%) 9.4 8.8 1.2 3.5 72.5

Cooperator and location £ Bill and Don Geer, District 108.

Planting date: May 1, 1980. ls = short, M = medium, L = long.

2subjective rating of 1-5, where 1 = poor and 5 =excellent emergence at 28 DAP.

3subjective rating of 1-9, where 1 = 10% and 9 = 100% lodged.

-14-

Tab 1 e 12. Performance summary of early rice experinental lines and varieties, Yuba County, 1980.

1980 Grain Days to entry Variety Grain yield @ Seedling SOt Plant no. description typel 14t moisture vigor2 heading height Lodging3

1 bs/acre an t

31 L-201 L 7180 2.5 97 90 1.0 51 79-y-253 L 6960 2.8 94 93 1.0 50 79-y-54 L 6480 3.5 99 68 1.0 41 79-y-167 s 6440 5.0 94 73 1.0 52 79-y-254 L 6320 3.5 92 79 1.0 38 79-y-43 M 5890 4.3 94 79 1.0 39 79-y-44 M 5850 3.5 94 71 1.0 47 79-1665 s 5790 3.5 93 71 1.0 45 79-y-241 M 5740 4.8 93 75 1.0 35 79-y-20 M 5430 4.8 92 71 1.0 30 S-201 s 5370 4.8 96 68 1.0 37 79-y-40 s 5350 5.0 94 66 1.0 43' 79-y-217 M 5340 3.8 95 73 1.0 29 S6 s 5330 4.5 96 90 1.5 44 79-y-220 s 5220 4.5 94 73 1.0 34 79-y-18 s 5080 4.8 96 70 1.0 32 M-9 M 5070 4.5 93 74 1.0 48 79-1668 s 5040 4.3 95 66 1.0 36 79-y-37 s 4950 4.0 96 73 1.0 46 79-1661 s 4950 4.3 98 75 1.0 40 79-y-51 M 4840 4.8 94 70 1.0 33 M-101 /OD-1 M 4810 4.0 91 63 1.0 49 79/14150 M 4510 3.5 94 69 1.0 42 79-y-196 M 4150 4.5 93 73 1.0

Grand Mean 5500 4.1 94 74 1.0

LSD .05 480 0.7 2.4 6.7 0.2

c.v . (t) 6.2 12.8 1.8 6.4 11.5

Cooperator and location: Bob Mohammed, District 10.

Planting date: May 1, 1980. ls = short, M = medium, L = long.

2subjective rating of 1-5, where 1 =poor and 5 =excellent emergence at 28 DAP.

3subjective rating of 1-9, where 1 = 10% and 9 = 100% lodged.

-15-

Tab

le 1

3.

Perf

orm

ance

sum

mar

y of

ear

ly r

ice

expe

rim

enta

l li

nes

and

v

arie

ties

, m

eans

of

fou

r lo

cati

ons

in 1

980.

1980

G

rain

D

ays

to

entr

y V

arie

t;y

Gra

in

yie

ld @

D

unca

n's

See

dlin

g 5~

Pla

nt

no.

desc

ri2t

ion

ty2e

l 14~ m

oist

ure

test

vi

gor

2 he

adin

g he

ight

Lo

dg1

ng3

lbs/

acre

em

t

31

L-20

1 L

87

00

a 3.

5 98

10

1 1.

9 51

79

-y-2

53

L

8480

ab

3.

4 97

10

4 2.

5 41

79

-y-1

67

s 83

40

abc

4.4

99

88

1.6

37

79-y

-40

s 82

80

abed

4.

6 99

85

1.

8 38

79

-y-4

3 M

82

40

abed

4.

2 99

90

1.

6 39

79

-y-4

4 M

81

50

be de

3.

7 98

83

1.

0 30

S-

201

s 80

60

bcde

f 4.

3 98

84

2.

2 35

79

-y-2

0 M

79

00

cdef

g 4.

4 97

87

1.

1 44

79

-y-2

20

s 78

90

cdef

g 4.

3 98

85

1.

9 47

79

-y-1

665

s 78

30

defg

3.

8 97

87

2.

4 50

79

-y-5

4 L

77

40

efgh

3.

7 10

3 82

1.

0 45

79

-y-2

41

M

7740

ef

gh

4.2

98

88

1.1

48

79-1

668

s 76

30

fgh

4.3

99

84

1.0

46

79-1

661

s 75

90

fgh

4.2

102

90

2.0

I 34

79

-y-1

8 s

7580

fg

h 4.

5 99

84

2.

1 .....

43

79

-y-2

17

M

7580

fg

h 3.

9 10

0 85

1.

3 0

\ I

52

79-y

-254

L

75

40

gh

3.9

95

89

1.4

40

79-y

-51

M

7330

h

4.4

96

86

1.9

36

79

-y-3

7 s

7320

h

4.0

100

89

1.7

32

M-9

M

73

20

h 4.

1 95

90

4.

2 49

79

/141

50

M

6810

i

3.8

96

85

4.2

29

S6

s 67

90

i 4.

2 10

0 11

3 6.

3 33

M

-101

/DD

-1

M

6700

i

3.5

91

79

3.9

42

79-y

-196

M

66

30

1 4.

4 95

89

2.

6

Gra

nd M

ean

7670

4.

1 98

89

2.

2

LSD

.05

for

varf

etfe

s 41

0 0.

3 1.

5 3.

2 1.

1 LS

D .0

5 fo

r va

rfet

;y X

loc

atio

n 83

0 0.

5 3.

0 6.

3 2.

3

c.v.

(~)

7.

8 8.

8 .

2.2

5.1

73.7

ls •

sh

ort

, M

• m

ediu

m,

L •

lo

ng.

2sub

ject

ive

rati

ng o

f 1-

5,

whe

re 1

=p

oo

r an

d 5

= e

xcel

lent

em

erge

nce

at 2

8 DA

P.

3sub

ject

ive

ratf

ng o

f 1-

9,

whe

re'l

= 1~

and

9

= 1

00%

lodg

ed.

~

Table 14. Grain yield summary of early maturing rice varieties and experimental lines by location and year. 1976-1980.

Varieties and Experimental lines County C a 1 roo chi Calroochi 78-y-186 location Year S-6 M-9 l-201 S-201 201 202 (M-201 )

Butte 1976 6850 8080 1977 6480 8880 9490 6410 1978 6030 7790 7990 7970 5750 1979 7200 8370 9400 8430 7310 9020 9740 1980 6880 8380 10080 9730 9280 10080

location n-ean 6690 8300 9240 8880 6490 9150 9910

Yuba 1976 5750 8040 1977 6920 7340 7160 6630 1978 5980 6630 6000 6290 5170 1979 7450 8640 6250 8720 5760 7600 8050 1980 5330 5070 7180 5370 4950 5850

location mean 6290 7140 6650 6790 5850 6280 6950

Yolo 1976 6560 8710 1977 7150 8120 8280 7160 1978 7810 8150 8120 8350 6710 1979 8700 9990 9760 10560 7800 10070 10550 1980 7360 8750 8970 9360 7710 8440

location mean 7520 8740 8780 9420 7220 8890 9500

Over location -years mean 6830 8060 8220 8360 6520 8110 8790

Yield as t S-61 100 118 118 120 92 113 123

Number of tests 15 15 12 9 9 6 6

lsased on equivalent location-year means and may not reflect a 11 locations and years of S-6.

-17-

..

Table 15. Performance summary of late rice experimental lines and varieties, Butte County, 1980.

1980 Grain Days to entry Variety Grain yield @ Seedling 50'1, Plant no. desc ri pt ion tyEel 14'1, moisture vigor2 heading height Lodging3

1 bs/acre em 'l,

66 79-y-55 M 10810 4.9 108 104 1.0 77 79-y-405 s 10670 5.0 104 104 2.3 79 79-y-423 M 10640 5.0 103 99 1.3 82 79-y-341 L 10610 5.0 102 86 1.0 69 79-y-68 r~ 10570 5.0 106 98 2.3 75 79-y-81 M 10510 5.0 108 106 1.0 76 79-y-402 M 10500 5.0 108 102 1.0 71 79-y-73 s 10440 4.9 102 104 1.0 73 79-y-79 M 10260 5.0 102 101 1.8 72 79-y-75 M 10200 5.0 106 100 1.0 80 79-y-438 s 10160 5.0 112 93 1.0 83 79-y-363 L 9900 4.9 108 93 1.0 68 79-y-67 M 9820 5.0 109 98 1.0 74 79-y-80 M 9800 5.0 106 102 2.0 70 79-y-69 M 9770 5.0 106 98 1.0 63 M7 M 9690 5.0 113 99 1.0 84 79-y-368 L 9500 4.4 102 93 1.0 81 79-y-329 L 9360 4.3 98 92 1.0 62 Calrose 76 M 9320 5.0 113 99 1.0 67 79-y-66 M 9170 5.0 104 102 1.0 64 M-301 H 9170 5.0 102 104 3.0 78 79-y-411 M 8950 5.0 109 94 1.0 65 S024/CAL M 8340 4.5 101 90 1.0 61 M5 M 6630 5.0 103 127 9.0

Grand Mean 9780 4.9 105 99 1.6

LSD .05 620 0.2 2.0 5.1 1.1

c.v. ('l,) 4.5 2.6 1.3 3.6 47 .2

Conducted by the Rice Experiment Station, Biggs.

ls = short, M = medium, L = long.

2subjective rating of 1-5, where 1 =poor and 5 =excellent emergence at 28 OAP·

3subjective rating of 1-9, where 1 = lO'l, and 9 = lOO'l, lodged.

-18-

-Table 16. Performnce summary of late rice experimental lines and varieties,

Glenn County, 1980.

1980 Grain Days to entry Variety Grain yield @ Seedling 50't Plant no. description typel 14~ moisture vigor2 heading height Lodgi ng3

1 bs/acre em ~

71 79-y-73 s 10710 4.3 106 103 2.3 77 79-y-405 s 10220 4.5 109 106 3.3 69 79-y-68 ~1 10110 4.5 109 101 9.0 74 79-y-80 M 10080 4.8 110 103 4.8 66 79-y-65 M 10050 4.0 110 104 6.8 76 79-y-402 M 9770 4.3 110 102 9.0 75 79-y-81 M 9760 4.8 109 101 8.5 72 79-y-75 M 9540 4.0 106 101 3.8 79 79-y-423 t•t 9530 4.8 107 102 2.8 64 r~-301 M 9490 4.0 104 103 8.8 67 79-y-66 M 9390 4.0 106 100 3.8 73 79-y-79 M 9280 4.5 107 96 1.8 63 M7 M 9260 4.0 111 100 1.0 61 M5 M ~00 4.0 105 131 9.0 82 79-y-341 L 8990 4.3 108 89 1.0 70 79-y-69 M 89~ 3.8 108 101 1.5 80 79-y-438 s 8980 4.5 113 97 1.3 68 79-y-67 ~1 8940 3.5 110 96 3.8 78 79-y-411 M 8930 4.8 109 98 1.0 84 79-y-368 L 8850 4.0 109 100 1.0 62 Calrose 76 r~ 8540 4.0 115 104 6.5 65 SD24/CN... M 8210 3.3 110 94 1.0 81 79-y-329 L 8210 3.8 104 91 1.0 83 79-y-363 L 7650 3.5 110 99 1.0

Grand Mean 9270 4.1 108 101 3.9

LSD .05 600 0.6 1.3 6.2 1.6

c.v. {'.t) 4.6 10.4 0.8 4.3 29.2

Cooperator and location: Wy 1 i e Fa rmi ng, Norman.

P1 anti ng date: April 16, 1980

ls = short, M = medium, L = long.

2subjective rating of 1-5, where 1 =poor and 5 =excellent emergence at 28 DAP. 3subjective rating of 1-9, where 1 = 10~ and 9 = lOO'.t lodged.

-19-

Tab 1 e 17. Performance summary of late rice experimental Sutter County, 1980.

lines and varieties,

1980 . Grain Days to entry Variety Grain yield @ Seedling 50% Plant no. description tt2el 14% moisture vigor2 heading height Lod~i ng3

1 bs/acre em %

71 79-y-73 s 10510 5.0 107 103 6.0 73 79-y-79 M 10180 5.0 107 96 4.0 79 79-y-423 M 9920 4.8 106 98 6.0 80 79-y-438 s 9840 4.0 110 90 6.3 70 79-y-69 M 9700 4.8 108 96 3.0 66 79-y-65 M 9600 4.0 107 97 7.0 63 M7 M 9560 4.5 110 93 5.3 81 79-y-329 l 9450 3.8 104 94 3.0 69 79-y-68 t~ 9430 4.8 108 95 9.0 74 79-y-80 M 9390 4.8 109 95 8.8 67 79-y-66 M 9370 4.5 105 94 . 3.0 72 79-y-75 M 9260 4.8 105 95 7.0 68 79-y-67 M 9260 5.0 109 89 7.8 65 SD24/CAL M 9120 2.8 104 87 1.0 62 Calrose 76 M 8990 4.3 110 94 8.8 78 79-y-411 M 8970 4.8 109 90 1.3 75 79-y-81 M 8900 4.8 107 99 9.0 77 79-y-405 s 8820 4.8 108 100 9.0 76 79-y-402 M 8820 4.8 108 96 8.3 64 M-301 M 8810 4.5 104 100 7.8 82 79-y-341 L 8450 4.3 111 89 1.0 84 79-y-368 L 8260 3.3 110 95 7.0 61 M5 t~ 7940 3.8 104 125 9.0 83 79-y-363 L 6720 3.0 113 93 1.0

Grand Mean 9140 4.3 108 96 5.8

LSD .05 710 0.7 1.4 5.0 2.4

c.v. (%} 5.5 10.9 0.9 3.7 29.4 ·

Cooperator and location: Galloway, Robbins.

Planting date: May 1 0 , 1980 • ls = short, M = medium, L = long.

2subjective rating of. 1-5, where 1 =poor and 5 =excellent emergence at 28 OAP. 3subjective rating of 1-9, where 1 = 10% and 9 = lOot lodged.

-20-

- Tab

le 1

8.

Perf

orm

ance

sum

mar

y of

lat

e ri

ce e

xper

imen

tal

11ne

s an

d v

arie

ties

, m

eans

of

fou

r lo

cati

ons,

198

0.

1980

G

rain

D

ays

to

entr

y V

arie

zy

Gra

1n

yie

ld @

D

unca

n's

Seed

ling

50'.t

Pla

nt

no.

desc

riE

tion

zy

Eel

lU

moi

stur

e te

st

vigo

r~

head

ing

heig

ht

Lodg

ing3

lb

s/ac

re

em

, 71

79

-y-7

3 s

9700

a

4.3

102

99

2.9

66

79-y

-65

M

9450

ab

4.

1 10

5 10

2 5.

2 69

79

-y-6

8 M

93

70

ab

4.3

104

97

5.9

79

79-y

-423

M

93

40

ab

4.5

103

100

3.5

73

79-y

-79

M

9330

b

4.6

103

98

3.7

74

79-y

-80

M

9210

be

4.

6 10

5 98

5.

2 76

79

-y-4

02

M

9190

be

4.

3 10

5 99

5.

4 72

79

-y-7

5 M

91

70

be

4.2

103

96

4.1

77

79-y

-405

s

9160

be

d 4.

5 10

4 10

1 5.

3 80

79

-y-4

38

s 91

10

be de

4.

3 10

7 92

3.

4 75

79

-y-8

1 M

90

80

be de

4.

4 10

5 99

5.

6 63

M7

M

89

10

cdef

4.

3 10

7 97

2.

9 70

79

-y-6

9 M

88

60

cdef

g 4.

2 10

5 98

2.

2 67

79

-y-6

6 M

87

90

defg

h 4.

1 10

2 96

2.

3 I

68

79-y

-67

M

8770

ef

gh

4.3

106

95

3.9

N _.

64

M-3

01

M

8730

ef

gh

4.3

100

103

6.6

I 78

79

-y-4

11

M

8610

fg

hi

4.6

105

95

1.9

82

79-y

-341

L

85

60

fghi

4.

1 10

5 89

1.

0 62

C

alro

se 7

6 M

85

30

fghf

4.

1 10

7 99

5.

7 81

79

-y-3

29

L

8500

gh

f 3.

5 10

0 89

1.

7 84

79

-y-3

68

L

8460

hi

3.

6 10

5 94

3.

0 65

SD

24/C

N...

M

8270

f

3.2

102

89

1.8

83

79-y

-363

L

77

00

j 3.

8 10

6 96

1.

5 61

M5

M

76

80

j 4.

3 10

2 12

4 8.

9

Gra

nd M

ean

8850

4.

2 10

4 98

3.

9

LSD

.05

for

vari

etie

s 33

0 0.

4 1.

1 4.

7 1.

3 LS

D .0

5 fo

r va

r1et

;y X

loca

tion

66

0 0.

9 2.

3 ns

2.

6

c.v.

('t

) 5.

4 14

.8

1.6

6.9

47.5

ls •

sho

rt,

M •

med

ium

, L

•

long

. 2s

ubje

ctfv

e ra

ting

of

1-5,

whe

re 1

• p

oor

and

5 =

exce

llen

t em

erge

nce

at 2

8 DA

P.

3sub

ject

ive

rati

ng o

f 1-

9, w

here

1 •

lO

'.t an

d 9

• lO

O'.t

lodg

ed.

----

----

-

Table 19. Grain yield summary of late maturing rice varieties and experimental lines by location and year.

VI

Varieties and ExEerimenta1 Lines County C a1 rose 78-y-64

location Year M-5 M-7 76 M-301 (M-401 )

Butte 1976 9280 7380 1977 9170 8800 1978 4560 5340 5790 6080 5970 1979 6040 8040 7820 7380 7310 1980 6630 9690 9320 9170 10570

Location ~rean 5740 8300 7820 7540 7950

Glenn 1976 6020 6390 1979 7440 9380 9120 8920 11240 1980 9000 9260 8540 9490 10110

Col usa 1977 7420 7880 1978 5830 7540 6440 6970 8070

Location mean 7420 7920 7670 8460 9810

Sutter 1976 7990 7910 1977 8720 8740 1978 7340 8460 8210 8120 7700 1979 7660 8130 7610 7250 8000 1980 7940 9560 8990 8810 9430

Location mean 7650 8570 8290 8060 8380

Fresno 1976

Merced 1977 1978 7200 7130 6890 7550 7440 1979 6340 7220 6780 6410 7180 1980

.

Location mean 6770 7175 6840 6980 7310

Over location-rear mean 6910 8160 7770 7830 8460 Yield as % M-5 100 118 112 113 122 Number of trials ll 17 17 ll ll

lsased on equivalent location-year means and may not reflect all locations and years.

lJ

-22-,,