. Manual of fruit insects. K. the calyx lobes closed; it is now too late to sprayeffectively. with the calyx end directed upward (Fig. 16). If at this timean arsenical spray is thoroughly applied with sufficient forceto drive the poison into the calyx cup, minute particles of thepoison will be deposited where the young larva will get it inhis first meal as it enters the fruit. In about two weeks thecalyx lobes close as shown in Figure 17, and it is then too lateto spray effectively, for it is then impossible to place the poisonwhere it will do the most good. The closed calyx lobes form 20 FRUI
. Manual of fruit insects. K. the calyx lobes closed; it is now too late to sprayeffectively. with the calyx end directed upward (Fig. 16). If at this timean arsenical spray is thoroughly applied with sufficient forceto drive the poison into the calyx cup, minute particles of thepoison will be deposited where the young larva will get it inhis first meal as it enters the fruit. In about two weeks thecalyx lobes close as shown in Figure 17, and it is then too lateto spray effectively, for it is then impossible to place the poisonwhere it will do the most good. The closed calyx lobes form 20 FRUIT INSECTS a tight roof over the cavity and prevent the rain from washingaway the poison. To be most effective this first spray shouldbe appUed as soon as possible after the larger part of the petalshave fallen. Great care should be taken to hit each apple, thespray should be directed downward directly into the blossomend of the fruit and sufficient power should be used to give astrong spray. In commercial orchards the best re
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectbenefic, bookyear1915
