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F629 Cotton Scouting Form - UT Crops · Cotton Scouting Form ... Count 1 clouded plant bug as equivalent to 1.5 tarnished plant b l o o m ... In order to protect people and the environment,

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Page 1: F629 Cotton Scouting Form - UT Crops · Cotton Scouting Form ... Count 1 clouded plant bug as equivalent to 1.5 tarnished plant b l o o m ... In order to protect people and the environment,

Plants

Field name Acreage

Growth

Pinhead“X”

%Square retention

1st

position

%Boll retention

1st

position

Node above1st

positionwhite fl ower

Heat unitspast

NAWF=5 Other insects, weed or disease problemsHeight Node

Insect and PlantInsects

Field name DateBT“X”

Thrips per plant

%Cutwormdamage

Aphids(L, M, H)

Spider mites(L,M,H)

Whitefl ies(L,M,H)

Benefi cial insects Boll/Budworms

Plantbugs

Stink bugs Other pests

%

#per 6 row

Ft

No. per 100 plants Squares

# per 6row Ft

100Sweeps

# per 6row Ft

100Sweeps

Armyworms

LoopersEggs

Small worms< ¼˝

Large worms> ¼˝

%Damage

%Live

worms

Beet,Fall,

Yellowstriped

Cotton Scouting FormGrower

Scout

Phone

Phone

Field (Week) Report #

County

F629

Page 2: F629 Cotton Scouting Form - UT Crops · Cotton Scouting Form ... Count 1 clouded plant bug as equivalent to 1.5 tarnished plant b l o o m ... In order to protect people and the environment,

INSEC

T TH

RE

SHO

LDS

*BOLL W

EEVIL

Imm

ediately notify Boll W

eevil Eradication offi cials if an infestation is found.*C

ON

VEN

TION

AL C

OTTO

NB

ollworm

/Tobacco Budworm

: When 4+ (after fi rst bloom

) or 8+ (before bloom) sm

all larvae per 100 plants are present or when larvae are

present and square damage is 5 percent or greater. Egg counts aid in tim

ing applications and indicate subsequent occurrence of larvae.*BT C

OTTO

NFoliar treatm

ents should be made w

hen 4+ (after fi rst bloom) or 8+ (before bloom

) surviving larvae per 100 plants are present and /or 2 percent boll dam

age is found. Egg counts aid in timing application and indicate subsequent occurrence of larvae.

*PLAN

T BUG

SFirst 2 w

eeks of squaring: 1 or more per 6 row

feet or 8 per 100 sweeps. Third w

eek of squaring until fi rst bloom: 2 or m

ore per 6 row feet or 15

per 100 sweeps. A

fter 1st bloom

: 4 or more per 6 row

feet or 30 per 100 sweeps. C

ount 1 clouded plant bug as equivalent to 1.5 tarnished plant st bloom

: 4 or more per 6 row

feet or 30 per 100 sweeps. C

ount 1 clouded plant bug as equivalent to 1.5 tarnished plant st

bugs.

If square retention drops below 80 percent prior to bloom

and plant bugs are present, treatment

should be considered even if numbers are sub threshold.

*THR

IPSWhen thrips average 1 or m

ore per plant and damage is observed.

*APH

IDSEarly season: w

hen aphids are present on numerous plants and som

e leaves are curled along the edges. Mid-season: w

hen aphids are very num

erous, honeydew is present, and natural control agents are not affecting aphid populations.

(L, < 10 per leaf; M, 10 – 50 per leaf; H

, >50 per leaf)*SPID

ER M

ITESW

hen 50 percent of the plants are infested. (L, < 10% infested; M

, 10-50% infested; H

, > 50% infested)

*WH

ITEFLIESW

hen 50 percent of the terminals are infested w

ith adults. (L, < 10% infested; M

, 10 – 50% infested; H

, > 50% infested)

*STINK

BUG

SW

hen stink bugs number 1 or m

ore per 6 feet, or when 20%

or more of thum

b-sized bolls are injured.*FA

LL AR

MY

WO

RM

When 4 or m

ore larvae are found per 100 blooms and bolls or w

hen 10 – 20 larvae are found per 100 plants.*BEET A

RM

YW

OR

MPrior to A

ugust 15: when 5 or 6 hits are found per 300 row

feet. After A

ugust 15: when 10 or m

ore hits (egg mass or group of sm

all larvae) are found per 300 row

feet.*LO

OPER

SWhen loopers cause 25 percent defoliation or populations threaten prem

ature defoliation prior to boll maturity.

PLAN

T MA

NAG

EM

EN

T

*GRO

WTH

STAG

EH

eight – Is measured from

the ground of the cotton plant to the upper main-stem

node on which the m

ain-stem leaf is unfurled (term

inal). N

ode – A point of attachm

ent of plant structures (leaves or fruit) to main stem

or branches of a cotton plant.*PIN

HEA

DWhen the 1

st square the size of pencil eraser occurs in the terminal. Low

est main-stem

above the cotyledonary node from w

hich a sympodial

st square the size of pencil eraser occurs in the terminal. Low

est main-stem

above the cotyledonary node from w

hich a sympodial

st

( fruiting) branch develops. Usually occurs at m

ain-stem nodes 4

th to 7th infl uenced by variety, tem

perature, and cultural practice.*SQ

UA

RE A

ND

BOLL R

ETENTIO

NPresence of 1

st position squares or bolls at all fruiting nodes from top to bottom

.st position squares or bolls at all fruiting nodes from

top to bottom.

st

*NO

DES A

BOV

E 1ST PO

SITION

WH

ITE FLOW

ER (N

AWF)

A m

easure of the number of m

ain-stem nodes above the upperm

ost white fl ow

er in the fi rst fruiting position.*H

EAT U

NITS A

FTER N

OD

E ABO

VE W

HITE FLO

WER

= 5 (NAW

F 5)H

eat units are a measure of physiological tim

e and measure the pace of grow

th and development of a cotton plant. To calculate heat units for a

day, average the high and low tem

peratures (high + low)/2] then subtract 60. Total heat units beyond N

AWF 5 is the accum

ulation of heat units after N

ode Above W

hite Flower 5.

Precautionary Statement

In order to protect people and the environment, pesticides should be used safely. This is everyone

s̓ responsibility, especially the user. Read and fol-low

label directions carefully before you buy, mix, apply, store or dispose of a pesticide. A

ccording to laws regulating pesticides, they m

ust be used only as directed by the label. Persons w

ho do not obey the law w

ill be subject to penalties.

Disclaim

er Statement

Pesticides recomm

ended in this publication were registered for the prescribed uses w

hen printed. Pesticides registrations are continuously reviewed.

Should registration of a recomm

ended pesticide be canceled, it would no longer be recom

mended by the U

niversity of Tennessee. U

se of trade or brand names in this publication is for clarity and inform

ation, it does not imply approval of the product to the exclusion of others

which m

ay be of similar, suitable com

position, nor does it guarantee or warrant the standard of the product.

F629-2M

-3/05 (R

ev) E12-4615-00

-008-05 05

-0285-

Programs in agriculture and natural resources, 4-H

youth development, fam

ily and consumer sciences, and resource developm

ent.U

niversity of Tennessee Institute of Agriculture, U

.S. Departm

ent of Agriculture and county governm

ents cooperating.U

T Extension provides equal opportunities in programs and em

ployment.