Brownsville herald. [volume] (Brownsville, Tex.) 1910-current, 1916-02-03

tBy II. II. tIliTTEADEN, II Charge Truck
Crop and Stored Product lnvestiga-
tion.)
The methods OF treating onion fields al
iected BY the MOI thrips are complicated.
and i full consideration Of the remedies
would ~ toe expensive To ~ incorporated
IN u single article. Kerosene emulsion.
whale oil or fish III soaps. and tobacco
or nicotine extracts are among the best
remedies. On account Of their inmate size
thrips are very difficult 10 reach except IN
their Younger stages: hence remedial
measures should be undertaken early IN
the season to act ~ representatives. rather
than cures. The habit W the thrip> VI con
cealing thom~c!ye- III flowers and other
parts If plants. such IL the sheat, VA cnlon
leaves. increases thu difficulty.
Too great stress can not be land on the
value of clean methods oil iield manage
ment. a. the onion ihnp> feeds on nearly
an vegetables and many Towering plants.
aud ~ 4 pest i'll greenhouses. ID develops
al-o I'D weeds Ut various kinds. After the
onion qop " gathered. u-elc- Watcrlal-
cull~. top- and injured plant--~hould ~
promptly destroyed TN burning and not
left where the insects can spread 70 neigh
boring plants To ~rclnie-t onions on other
susceptible crops when they are planted
the following season.
Early planting ~ oi service. especially
aorthward. Manure and other fertilizers
should w freely used to stimulate early
growth.
With an insect caI.aue "a sustaining lite
On such Il variety ot vegetation. 81 ~ dlf-
iculi Ia find IN alternate crop plant that Is
not likely to be injured. For alternateS,
cabbage. cauliflover. strawberry and en-
rumber and other cucurbIts should BE-
avoided. also ornamental plants. par
ticularly roses and carnations. as I'll vi
these are much favored PPM Trims. These
plants should not even b. grown IN the
vicinity OF onion fields. Certain other
vegetables however. such a~ potato. sweet
potato. peas. beets. and spinach, although
they may be- attacked by adults. are not NJ
4 rule materially damaged, 80 far ~ i
shown TN the records.
Onion growers should ~ able Az con
duet remedial work with the aid VI the in-
-trurion~ herewith. provided they employ
the proper ~praycr~ for the purpose.
Agents who have been working on the
onion thrps for four years past obtained
during the wears l910-l2. much success
with the nicotine -ulphate solutions. The
formula first used IN 1910 was: Nicotine
~ulphute. 10 ounces whale oil, r pounds;
water. ~ Gallons. Afterwards " was a~-
rcrtuined hv M. Nj. High. working WI
Brownsville. TcNu-. and in indiana. that
The solutions that nave been most sue
ce~srully used are az follows Nicotine sui
phate, - ounces, crc~ol soap. 3 piut-.
water. 30 gallons. az nicotine -%ulphatc. i-3
ounces; whale oil ~oep, ! pounds: water.
30 gallons.
III the case VT the first formula -"rIr
.imc IVY saved because VI l- not necessary tn
dissolve the soap. " being " i,.uld Ou
tie other hand THE whale ~ soap has tr
be- shaved into small particle aad heated
ueitlt IT. 'tI ne Iiut lNiN ~bitll'N. ltf
crosol soap l. somewhat the better a- 30
~preadcr hut should be- purchased With
care and the correct strength obtained i~-
per cent crc-nl -uapl IN order i" -rt ih,
best results. \ good quality ot whale u'
soap gives good results. and M YIN ual, W
question n- to which -oHr XIV more avail
able On the instant needed and how vain
able time Is with the grower. When spray
ne D. onre hceun u should be- continued ai
intervals of rom go 10 dav- m ease there
no heavy rnmtall during tins period. aaJ
ne surrounding breeding host lor .F.
rccir-- The spraying should hr continued
.up to three ur -four week. ot harvest tn.
IN SPRAYING fnr thrip- ihc ruzzlr Should
hr held well down upon the plant anil 'h
pray applied with a- much iuIc. a- r.-
-iblc. The addition ~ soap j. chiefly Tor
action as n "epreader" and 49, an adhesive
and the nicotine ac'- better go th-
strength. q. doe uut alhcrr M thc rlart