Squash vine borer moth. These moths visit curcurbits during the day. Characteristic symptoms of manganese deficiency. Apply fertilizers according to annual soil test reports. Feeding winged and wingless, yellow or striped, narrow bodied thrips cause silvery blotches on leaves and reduced plant vigor, especially on small plants during cool, wet periods.
Scout fields for presence of thrips and spray when infestations occur.
Use a lOx pocket magnifier and white paper to detect thrips. With population buildup during hot, dry periods, fine webbing may be observed. Same as for soybean thrips. Foliar feeding by loopers can strip leaves and delay growth of small plants in late plantings. Check traps for this migrating insect, scout fields and spray when young larvae are seen.