Arlin L. Bostian

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A series of greenhouse, phytotron, field, and microplot experiments evaluated factors that influenced plant-growth.stimulation associated with the use of the pesticide aldicarb. A phytotron experiment showed.that aldicarb increased growth, of Ransom soybean at all temperatures but was somewhat phytotoxic to Coker 156 soybean at 30 C. Soybean gave the(More)
Greenhouse and field experiments were conducted to determine the effects of phenamiphos and/or alachlor on early growth of soybean, root morphology, and infection and resurgence of Heterodera glycines (race 1). All tests were planted to 'Ransom' soybeans. In greenhouse experiments without nematodes, root growth was inhibited at 5 days by alachlor treatments(More)
Heterodera glycines (race 1) eggs were exposed to aqueous solutions o f selected concentrations o f the herbicide alachlor and the organophosphate nematicide phenamiphos alone and in herbicide-nematicide combinations. Phenamiphos (0.5 mug/ml) + alachlor (0.063, 0.125, or 1.0 mug/ ml) treatments increased the incidence o f juvenile hatch over that of(More)
The population dynamics of Heterodera glycines as influenced by alachlor, fenamiphos, and ethoprop alone and in herbicide-nematicide combinations were studied in the field. Numbers of H. glycines juveniles and eggs were higher at midseason and harvest where nematicides were applied. Fenamiphos alone or in combination with alachlor provided better control of(More)
Fipronil, a member of a new family of insecticides, was discovered by Rhône-Poulenc scientists in 1987 and placed into worldwide development in 1989. This insecticide is extremely active, often requiring only a few grams of active ingredient per hectare for control of piercing / sucking and chewing insect pests. Fipronil has proven to be particularly well(More)
A series of greenhouse., .phytotron~ field, and micr.oplot experiments evaluated factors that influenced plant-growth.stimulation associated with the use: of the pesticide aldicarb. A phytotron experiment showed.that aldicarb increased growth, of.:Ransom soybean at al[ temperatures but was somewhat phytntoxic to Coker 156 soybean at 30 C. Soybean gave the(More)
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