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Stylet Penetration Activities by Aphis craccivora (Homoptera: Aphididae) on Plants and Excised Plant Parts of Resistant and Susceptible Cultivars of Cowpea (Leguminosae)
Abstract Direct current electrical penetration graphs (DC-EPGs) were used to analyze the stylet penetration activities of cowpea aphid, Aphis craccivora Koch, on plants of aphid-resistant (ICV-12)Expand
AN “INTERVAL TIMER” FOR THE PRODUCTION OF OVIPARAE IN APHIS RUBICOLA (HOMOPTERA: APHIDIDAE)
TLDR
Post‐fundatrix lineages of Aphis rubicola Oestlund exposed to continual short‐day photoregimes of 8 or 10 h resisted sexual‐promoting influences for varying lengths of time and a short‐lived interval timer for the production of oviparae was demonstrated. Expand
Yield Effects of Tarnished Plant Bug Feeding on June-Bearing Strawberry Varieties in New York State
A 3-year study was conducted in a replicated 30 variety strawberry planting to investigate the relationships between Lygus lineolaris (Palisot de Beauvois) feeding and strawberry yields. In 1977, anExpand
Public sector pesticide use in Africa.
Insecticidal Evaluations for Reduction of Tarnished Plant Bug Injury in Strawberries
TLDR
Of various programs investigated, dimethoate appeared to offer the greatest potential for reduction of plant bug injury. Expand
Role of Nutrition in the Immunity of Red Raspberry to Amphorophora agathonica Hottes 12
TLDR
The results suggest that the immunity of Canby is related to the levels of both solids and nitrogenous compounds in the ingestate of A. agathonica . Expand
The Distribution and Seasonal History of Amphorophora agathonica Hottes on ‘Latham’ Red Raspberry
TLDR
Alatoid nymphs were most abundant in late June, several weeks prior to the peaks in population density, which implies that the greatest natural primary spread of raspberry mosaic from cultivated plantings may be expected in lateJune and early July. Expand
Effects of Infestation by Cowpea Aphid (Homoptera: Aphididae) on Different Growth Stages of Resistant and Susceptible Cowpea Cultivars
Field studies were conducted to characterise the effects of infestations by adult and nymphal stages of cowpea aphid, Aphis craccivora Koch, on the growth and yield of cowpea, Vigna unguiculata (L.)Expand
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