AP42 Section:

Reference:

Title:

9.2.1

3

0. P. Engelstad, editor, Fertilizer Technology And Use, Third Edition, Soil Science Society of America Inc., Madison, WI, 1985.

0. P. ENGELSTAD, editor

Edilorial Cornmiltee T. C. Tucker

0. P. Engelslad, chair F. C. Boswell

L. F. Welch

Moriogbig Ediror: RICHARD C. DINAUER

Associorr Ediror: SUSAN ERNST

Editor-in-Chief SSSA Publicoriorls: JOHN J . MORTVEDT

published by Soil Science Sociely of America, Inc.

Madison, W k o n s i n USA

1985

1

Bl 7 n

n =

.. .

.. .. . .

n

3 n z E 5 0

m 4

P VI

N N

. I + I + I + I I

Table 9-9. Comparative effectiveness of methods of N-P spplication on grain yield nnd leaf concentrations for wheat in Kansas z ILeikam et eL. 19781.

Reno County E h a o r t h County County Dickinson County C Fi m metric metric metric a Methodt r o d h a % N % P tondha % N % P Lonslhn % N % P VI

No N 1.4 3.80 0.17 2.6 3.91 0.20 1.7 3.58 0.22 Knifed ammonin 1.5 3.44 0.16 2.9 3.90 0.16 2.6 4.14 0.23 W e d ammonia. Wed APP 2.6 3.74 0.25 3.9 4.74 0.30 3.0 4.50 0.28 Wed ammonia. broadcast APP 2.6 3.78 0.20 3.6 3.92 0.19 2.9 4.06 0.22

Knifed WAN, knifed APP 2.9 3.87 0.23 3.7 4.62 0.29 3.0 4.02 0.28 KnifedUAN. broadcast APP 2.6 3.82 0.20 3.5 4.02 0.20 3.0 3.92 0.21

Wed ammonia, knifed APP 2.6 3.14 0.25 3.9 4.74 0.30 3.0 4.50 0.28

Wed ammonia. bsnd APP 2.4 3.80 0.19 3.4 4.18 0.21 2.8 4.12 0.24 Knifed UAN 1.7 3.84 0.16 2.7 4.02 0.19 2.5 4.07 0.23

W e d WAN. bsnd APP 2.4 3.84 0.20 3.0 4.06 0.21 3.0 4.07 0.23

Wed ammonia. knifed A P P plus N.SERVE 3.2 4.02 0.23 3.0 4.49 0.30 3.3 4.36 0.33 soil PH 7.3 6.0 5.5 6.1 Soil test P. kglha 9 I1 9 26

t APP is ammonium polypbosphnta supplied as 11-16.2-0 111-37-01 from TVA a t rste of 19 kdha P IN constant a t 84 kglha N). UAN is nonpres- sure. 28% --ammonium nitrate solution. N.SERVE is a nitrification inhibitor product of Dow Chemical Company IMidlend. MI). Band means placement of P with seed.

- . ..

. .

2. 3

c 2 0

a Io

z.

n 3 Y 3 m a n n !n

a

a 6 m m 2 n m v)

- z -1 XI 0 c) m 2 2 2 > -1 C XI .I

- 5' m Y

n

c

* 2- 3 3 3. m

0

n 0 + J "0

I" n 0 + 5

u

w

m

Y Y 0

Table 7-1 . Physical properties of solid nitrogen fenilizer3.t

Solubilityin water Fertilizer Moleculsr Melting Boiling Fertilizer material Fomuls weight Density point point Cold Hot

Ukg 'C &e 'C

1.53 340D 520s 2.97 0 7.58 100 1.73 110 210 11.83 0 87.1 LOO

235 D 7.06 0 10.38 100

2.50 561 10.2 0 36.4 100

2.26 301 380 D 1.3 0 18.0 100

- 'C - Ammonium chloride "$1 53 Ammoniumnitrate ",NO, 80 - Ammoniumsulfate INHASO. 132 1.77 Calcium cyanamide CaCN, Calcium nitrate CalNO,), 164 Oxamide - Thiourea -

t D = decomposes: S = sublimes.

- - 80 1300 S D D - NHKOhNH. 88 1.67 256s 290D 0.004 7.5

NH,CSNH, 76 1.41 180 D 0.98 12 Sodjum nitrate NaNO, 85

urea NH,CONH, 60 1.33 133 D 7.8 5 -

3 + a 0 n m 21 m m

N m

n

r: R

-

+

z I z i ,0

I. 8 + 5 I

I 0 0 z I

+ I

h

n v u

"0

c 0 0 ._ + N - - z 0

Q h z 0 I v N

+ n 0 n

+

n

Q Q N n o + +

+ n n o

h=O I F = O I z - -

n

t x n

x z 0 i z Y

0

L

0 n

z

z I !a 0 0

0

PERCENT OF TOTAL N

_I VI N' VI 0 u( e A

m -

u-

z

-I -2 VI VI

0 0 N

VI

H

D

z I -*

+

z I L _

z 0

' - 8

n Y 3 r m

!

L . .

Y

n z n

I

0

z I

f ? u

0 0

s Y Io

m

r

3 2 2 a

--

P

c

D v Mener

N = N

POLLlNbTlON

*.---e__ .. ..

3

n

4 W 0

n 2 n n W 2 E: N n W v)

;n

5 5

0

z ct -

- J W V . v l m N oulooo 0 00000 0 00000 0

4

r-

L

e;

DEPTH, cm

. . -

I'

"1

P

- 1c 4 D

z 2. E

Y. E. 7 r L

E P m u

Soil-Test K- mg/kg

P

N

-