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early or late plats, the cotton planted early escaped serious weevil 
aomnace, whereas the crop of bolls on late-planted cotton was entirely 
destroyed, resulting in a 50 percent loss in production. Many farmers 
are aware of the importance of early planting but this is often in- 
possible in the Brazos River bottoms, owing to overflows and the dif- 
ficulty of obtaining a good stand. Last season a mood stand of late- 
planted cotton with insect control gave increasec profits over cotton 
planted early. Observations of the insect domage on fertilized and 
check plats conducted by the A;ricultural Engineering Department of 
Texas A. & M. College gave no evidence of any cifference. There were 
no increased yields of cotton fron balanced fertilizers applied by 
verious methods and in verious quantities to these fertile botton lands. 
Movenent of cotton insects in relstion to wind direction. --The 
following notes on the relation of wind direction to the moverent of 
certain cotton insects ere subnittei by G. L. Smite wa, (C2 Claris; cand. 
A. L. Scales, of the Tallulah, La., laboratory: "For several years 
flight-screen traps have Deen used at the Tallulah laboratory and at 
other points in Madison Parish, La., to study the movenent of cotton 
insects in the cotton fielis end between the cotton fields and wooded 
areas. These screen traps heve all deen of the rigid, stationary 
type, with Ue surfaces exposed to the north, south, east, and west. 
Considering cunulative data obtained over 4 period of several years 
in these studies with stationary screen traps, it is apparent that 
with:-nost of the species of insects studied, the larger mumber were 
caucht on the leeward sites of the traps (in relation to the prevail 
ince wind direction). From the quodruple resister in the laboratory's 
neteorological equipment the nunber of hours for each wind direction 
ani each velocity was available daily, monthly, and yearly; but the 
changes in wind Airection occurred so often, even during the sane day, 
that it was impossible to reac the screen traps for each of these 
chonges in wind direction, waich would have been necessary to obtain 
an accurate record of the aumber of insects caught during each period 
hat the wind was from a given direction, In orfer to obtain an .accur- 
ate record of the insect's movemedt with or against the wind, o re- 
volving screen trap was desicn d which, with a wiudvane attached, would 
keep one surface exposed to winiward ot all times and the opposite 
surface exposed to leeward, Three of these revolving screen traps 
were constructed ani set up on the laboratory experinental grounds and 
operated from June l, 1932, to June 30, 1933, inclusive. Readings 
mere made daily and recordings meade of several of the cotton insects 
as they were taken from the winiward and leeward sides of the traps. 
A total of 12,404 cotton insects were collected on the three revolving 
screen traps during the 13 months, ond of this number 3,166 were taken 
on the winiward sides of the traps and 9,238 on the leeward sides. 
Anong the species token were 130 boll weevils (Anthonomus grandis Boh.) 
taken on the windward side an‘ 152 on the leewar’? side; Monocrepidius 
vesvertinus Fab., of which 273 were taken on the windward side and 
1,251 on the leeward side; of Graphocephala versuta (Say) 331 on the wind- 
——_—__—_—_—_- 
ward side and 672 on the leeward side; cotton flea Hopper, 23 on thes” 
