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Research conducted by Hajihassani nematology group showed that drench and in-furrow applications of nematicide Velum Prime cause phytotoxicity to cucumber at transplanting (see photo). In contrast, Velum Prime had no phytotoxic damage to cucumber when applied though drip irrigation at transplanting. We recommend to use Velum Prime at least 3 days before seeding/transplanting in furrow-irrigated…
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Determine the nematode genus (type) and their number in soil by analyzing the soil samples at a Nematode Diagnostic laboratory. For root-knot nematodes, the damage threshold is 0nly 1 nematode per 100 cc of soil. The nematicide rate for nematode control may vary based upon the nematode pressure in the soil. Identify the application rate,…
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A newly registered insecticide, PQZ, from Nichino America has shown good efficacy against the adult stage of silverleaf whitefly in multiple small plot tests in the last few weeks. While overall efficacy has not been fully evaluated, the activity on adults has appeared equal to Sivanto, which has been considered our best product on adults…
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We have recently confirmed Cucurbit leaf crumple virus (CuLCrV) on watermelon from Mitchell County, GA. The symptoms include crumpling, curling, yellowing and chlorosis of leaves. Disease symptoms are not as severe as observed in yellow squash and zuchinni. The virus spreads by whitefly in a persistent manner.
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Dr. Apurba Barman has been running a line of yellow sticky traps throughout southern Georgia for almost two years. These small traps are placed along roadways and changed and counted weekly. The trap lines include 125 locations stretching from Dothan, Alabama, to Reidsville, Georgia. The data collected from these traps are helping us to better…
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We have recently confirmed Cucurbit leaf crumple virus (CuLCrV) on snap bean at UGA, Tifton, GA. The symptoms include crumpling, curling, yellowing and chlorosis of leaves. Infected plants appear stunted with distorted growth. Disease symptoms can be severe and may result in yield losses. The virus spreads by whiteflies in a persistent manner. Current projections indicate low disease incidence and sporadic/limited…
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While some growers were successful managing pepper weevil this spring, others were not. PEPPER WEEVIL IS NOT A PEST YOU WANT TO GET BEHIND ON. Weevils can enter a field and feed on foliage as soon as it is transplanted (or before in the greenhouse), but they cannot reproduce until there are fruiting structures present.…
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Whitefly have been building for several weeks and are at high levels in some areas. Insecticide options for whitefly have not changed a great deal in the last year. The cornerstone chemistries for whitefly are still the Group 4 (Venom, Assail, Actara, Sivanto and pre-mixes containing these prodcuts) and Group 28 (Coragen, Verimark, Exirel) insecticides,…