i
l THE PLUDI CURCULIO early July to speed up the emergence n
S¤r¤»~r¤<>N Elrlll i2‘.;l‘.l3.il§"?F if ll3;"§?;.l§ll‘5l 2
second-brood curculio area, it woulil  · 2
P· O- RITCHER {md be well for all Kentucky peach men i t
W. D. ARMSTRONG tolkeep éhis weather l`aetor in mind. i a
n s u ying the behavior of new · i ·
The finding of the first 1944 cur- emerged adults in late June ariil ·"  
culios by jarring on April 10 at early July, 1943, it was ohserx·ed i i
Princeton started off the 1944 cur- that 2 or 3 weeks elapsed after the { s
culio season. This issue of the Ken- emergence of adults before thev de- `  
[ueky Fruit Notes will not likely be DOSited eggs. This fact enables `us ll. r
out in time to be of much service wait until a great many of them j
against the first-brood of CLll‘CLll·10. have emerged so that one sprav, well i
However, this is being written with applied, can kill the greatest number 2
the idea of shedding some light on of adults. · ,
second-brood activities and some of In both 1942 and 1943 the vounzt ·
the work recently done in KeniuCkY Cllreulio worms started lenvirlg lllg ’  
regarding this pest. %0llllS_§li`O£)Jl)l‘§l peaclhes and entering . ,
, l, n we ie sor a ou mic- lay. The`se then  _ ,
Wggk   312;% %;dt}lg4%xi)`;g$n$ۤ,t {remained} for sometime in the upper
Station in studying the second—br<>ed 153 1,?.$l€,S dl Sml “'ll¤¤`¤‘ they pu- p
activities of the plum curculio. pil 51 ·tl   dld ¤0t emerge   adults V
Some second-brood curculio were   lh lc =lll91` llftlf of June. Thus  ·
reared in stocked cages each summer °l° was 3 P€`l`l0d {lem lute Nay _
and a great many more were jarred through early June when a great
from the trees Each yéar under qc? many; of these' pupating I curculio .
ual orchard conditions. By making  `O  Caslly klllcd by dl$li1llL{ <·i`
feeding and egg laying observations UO? Jlllg 9lll°5{.€*“>l WDC ef eultiva- »
and by the dissection of adult cur- mchr mf “l_l S ll_ UP Ulf? l9lJ 3 er 4 ,
culios, it was determined that there . C$tO $01 · Tll_lS IS Considered an
was to be a fairly heavy Summer impor aint curculro control practice ·
brood each Of those y€arS· AS a m_ in éneac orchards that are cultivateal —
_ sult of this Work, SDYHY TIOUCCS WCW 3nA 3 gooq mlgummll for Culilwlllllll .
Sent Out recommending that Q _ vnother commercial practice that
r month - before - harvest arsenical ls glfly _Cll€€l1V€ in curcuho center,] i
Spray be applied to wntml these gw epicking up and destruction of
late peach Worms. Each yea,. 3 gmat Al \\(?1l11y 'peach drops early in l\’l'A;iyl
majority of peach gI'OW€I`S lll WGS? . SO SOVYS yllld llllllgly Plgs i'l~lllll11l;£
ern Kentucky applied this lam Spray Ubilfl 0lCl'ldlCi at that tlme will ele-  -
and, in general, secured excellent Sl,1?gLl;§’\llL¥;;;’;%m<;lll°€lC€l €l1i{>l>S· ‘
curculio control. In one block of El- _ l N`; *l— TS 0 €lll`¤‘_U 10 t‘<>1Vl~ ,
berm new Mayfield the mOmh_bC_ trol work are being continued in
fOI_€_ha1_V€St Spray reduced the Cm,_ _944 and information as to our tintl»
CUHO infestation to 3 perccnh In an ings will be forwarded to_the peach
adjoining block Of UEGS Of the Same grower in the spray service letters.
' age where this spray was nothap- ———
lied, due to abor shortage, t ere
iivas 11 percent of_wf>rmyC§rui1ii Tgis AMMONIUM NITRATE. THE
late spray not on y re uce ie 4- y M A T
worm injury to the peach crop but NL? Nlll“lGl~N
killed onidail numbler of the adults PERTILIZER
that wou ave ot erwrse gone in 0
winter quarters to be on hand to BY W· D· ARMSTRONG
cause more trouble in the spring of Duc to wm. Conditions and Shm_t_
194% ages most of the regular forms ot
In 1943 the influence of summer nitrogen previoulsy in general use.
rainfall on the emergence of curculio such as nitrate of soda, sulphate of
was again demonstrated. On two oc-. ammonia or calcium cyanamid will
casions very heavy emergence fol- not be available generally in suffi-
lowed immediately after soaking cient quantities. A new form of nitro-
ralns. This fact has been known for gen known as avmnonium nitrate will
some time and leads to the belief generally be available and at pres- »
that we are apt to have heavier ent prices is a very economical buy.
second-brood curculro injury where This material contains from 32.5%.
we have heavy rains in late June or to 34% nitrogen, which is twice as
4