. Cranberries; : the national cranberry magazine. Cranberries. Insecticides kill cranberry fruit^vorm eggs By C. F. BRODEL and B. A. WATT Cranberry Experiment Station East Wareham, Mass. The cranberry fruitworm, Acrobasis vaccina Riley, is a prevalent pest of cranberry in Massachusetts, New Jersey and Wisconsin. The larvae of this moth species consume five to eight berries each, causing economically significant crop reductions even when present in low numbers. To minimize larval feeding, growers in all regions apply insecticide two or three times after the majority of blossoms have lost their
. Cranberries; : the national cranberry magazine. Cranberries. Insecticides kill cranberry fruit^vorm eggs By C. F. BRODEL and B. A. WATT Cranberry Experiment Station East Wareham, Mass. The cranberry fruitworm, Acrobasis vaccina Riley, is a prevalent pest of cranberry in Massachusetts, New Jersey and Wisconsin. The larvae of this moth species consume five to eight berries each, causing economically significant crop reductions even when present in low numbers. To minimize larval feeding, growers in all regions apply insecticide two or three times after the majority of blossoms have lost their petals. While doing so, they often question whether the insecticide treatments are killing larvae only or eggs as well. A laboratory test performed in 1983 was designed to answer this question. Materials and Methods Eight insecticides (Table 1) were tested for their activity against cranberry fruitworm eggs. OrtheneR and PydrinR are the Table 1. Rates of insecticides tested for activity against cranberry fruitworm eggs. Amt. formulation Amt, formulation Insecticide per acre per 100 mis water Diazinon AG500 6 pt ml Guthion 2S 4 pt .17 ml Lorsban 4E 3 pt .125 ml Malathion 50EC pt .19 ml Orthene 75S lb .053 g Parathion 8E pt .03 ml Pydrin pt .027 ml Sevimol 4 pt .17 ml. COVER PHOTO )R. WILLIAM WELKER loints out features of his lew herbicide sprayer at meeting of the American -ranberry Growers Lssociation in New Jersey. i story about the meeting tarts on page 11. CRANBERRIES photo I ly Elizabeth G. Carpenter). Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Portland, CT [etc. ] : Taylor Pub. Co. [etc. ]
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