. Cranberries; : the national cranberry magazine. Cranberries. ;o -,. 7/30 8/6 8/13 8/20 Figure 2. Average weekly adult catches for 1984 for Sparqanothis sulfureana. sre from 1983 to 1984, a 50% duction. Diazinon use increased nong Check growers. In its first ;ar of availability, Lorsban ranks cond and third in use behind irathion as a primary insecticide nong Check and IPM growers, spectively (Table 8). Table 7 summarizes the cost benefit ialysis of IPM vs Check bogs. IPM owers made 10% fewer insecticide )phcations and realized a cost savings ' $ on materials and their iplication. IPM gr
. Cranberries; : the national cranberry magazine. Cranberries. ;o -,. 7/30 8/6 8/13 8/20 Figure 2. Average weekly adult catches for 1984 for Sparqanothis sulfureana. sre from 1983 to 1984, a 50% duction. Diazinon use increased nong Check growers. In its first ;ar of availability, Lorsban ranks cond and third in use behind irathion as a primary insecticide nong Check and IPM growers, spectively (Table 8). Table 7 summarizes the cost benefit ialysis of IPM vs Check bogs. IPM owers made 10% fewer insecticide )phcations and realized a cost savings ' $ on materials and their iplication. IPM growers used more ')stly insecticides that are less â irmful to beneficial insects and to le applicator than did Check growers. 'le average value of fruit loss per acre 'IS $ lower on IPM bogs, isulting in an average net benefit per ire of $ from IPM scouting and lower advisement (Table 7). It should be emphasized that this iialysis is intended to show relative istead of absolute numerical or prcentage differences, and that the lues herein are average. As such, ley do not reflect grower wholesale |ices for pesticides, per acre yields Igher or lower than the Massachusetts ierage of 140 barrels per acre, or nit prices substantially different from those in this analysis. It also should be noted that savings in pesticide and application costs seen in 1984 are only the most immediate benefits of IPM. IPM has essential, long-term benefits as well as reducing selection pressure for pesticide resistance and thus greatly delaying development of resistance, while prolonging the period of usefulness of currently available pesticides. Table 8. Number of insecticide treatments/acre applied for insect control in IPM and Check bogs, 1983 & 1984. Number of Treatments/A Pesticide 1983 1984 IPM Check IPM Check Parathion Guthion Sevin Diazinon Lorsban Orthene 0 0,20 0 0 Lannate 0 0 0 Malath
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