Field Experiments in Spraying Apple Orchards in 1913 And 1914
Field Experiments in Spraying Apple Orchards in 1913 And 1914
B S Bethel Stewart Pickett
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The material was applied in the following manner : Each plat was completely sprayed at one time, with material made up and carried in one load. Each plat was sprayed from one side, thru the middle, and then from the other side, so that the trees of both varieties were finished practically at the same time, and that any possible differences in the method of spraying, which in any case would be slight, would be equalized as far as possible between the varieties. The first, second, and third appli...cations, which are, taken together, responsible for the control of scab, leaf spot (Spliceropsis malorum Pk. ), first-brood codling moth, and the apple-leaf roller (Ar chips rosa- ceana Harris), were applied at favorable times. The third application is also partly responsible for the control of blotch. The apple flea- weevil (Orchestes canus Horn) confines its feeding to the earlier part of the season, and would be controlled by the early sprays if it is to be controlled according to the present schedule.
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