- 6 - 



(2) Dust all new and old plantings at 12-11^ day intervals after ggrowth 

 starts in April and during !Jay and June (except during bloom and within 

 2 weeks of harvest on fruiting beds.) 



(3) Dust all plantings at 3-U vreek intervals diiring July and August, 



(k) Dust all plantings at 12-11^ day intervals during September and October, 



The Right llate rials to Use 



Dusts have proved superior to sprays although this may not hold true under all 

 conditions. Materials must be driven into the buds and ujnder the foliage a Strawberry 

 aphids are found in these places, 



(5) Parathion - 1-2/^ dust is recomnended T^idelyt Observe all Safety 

 Precautions with this material, 



(6) Halathion - h-S% dust should provide as good control^ it will cost more 

 but is much safer for the man doing the job. 



Your Equipment Muat Be Good 



Hand dusters are not adequate on any but the smallest plantings. Power dusters 

 should have nozzles arranged so as to drive the dust into the buds and under the 

 foliage, A trailing canvas apron, 12-20 feet long, to confine the dust increases 

 effectiveness, 



Ell8\Torth H, Wheeler 

 Extension Entomologist 



EXCESSIVE CULTIVATION DECREASES GRAPE YIELDS * ■«•■)**** ^- * -x- ^;- * % ^ ■«■ -ji- ^^ * -:;- -it ,•«• 



Recent experiments in Ohio show rather conclusively that excessive cviltivation 

 is detriments to high yields in vineyards. Deep plowing and too frequent cxxltivations 

 tend to cause a compact soil structure, to reduce the water holding capacity of the 

 soil, and to damage the vines by cutting off roots. Discing of the overvTintering 

 cover crops in the spring is a more desirable practice than plowing. Three or four 

 light cultivations with a disc are sufficiente Laborious and costly hoeing between 

 the vines in the row can be avoided with two or three spray applications of dinitro. 

 The recommended rate of application is two pints of $$% dinitro-ortho-secondaiy butyl 

 phenol (Dov; General), 10 gallons diesel fuel oil, and water to make 100 gallons. This 

 mixture should be applied at the rate of ^0-100 gallons per acre depending on the 

 size and number of weeds. The first application sho\ild be made in May vhen the weeds 

 reach 6-8 inches in height. Repeat applications shovQd be made at three to four week 

 intervals • 



0,C, Roberts 



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