Journal ArticleDOI
Growth of the Green Cloverworm and a Thermal-Unit System for Development
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TLDR
Green cloverworm, Plathypena scabra , (Lepidoptera: Noctuidae), development was studied at various temperatures and a thermal-unit system for combined GCW development was established.Abstract:
Green cloverworm, Plathypena scabra , (Lepidoptera: Noctuidae), development was studied at various temperatures. Egg-to-adult green cloverworm development ranged from 80.3 days at 60°F for combined males and females to 28.5 days at 85°F. Development of males was significantly longer (2.4 days) than that of females. A thermal-unit system for combined GCW development was established. Accumulations of 123, 630, and 875 thermal units were required for egg, larval, and pupal development.read more
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Journal ArticleDOI
Developmental rate isomorphy in insects and mites.
TL;DR: In insect and mite species, all the developmental stages appear to have the same population‐specific lower developmental threshold, and the existence of rate isomorphy could be of great practical importance in the timing of life‐history events and in determining preadult thermal requirements.
Book ChapterDOI
New Understandings of Soybean Defoliation and their Implication for Pest Management
TL;DR: Results indicate that soybean yield reductions from insect defoliation primarily result from reduced light interception of defoliated plant canopies, and changes in leaf senescence were identified as a compensatory mechanism.
Journal ArticleDOI
Food induced variation of thermal constants of development and growth of Autographa gamma (Lepidoptera: Noctuidae) larvae.
TL;DR: This rigorous test supported RI for 3 of 9 diets where development of larvae of the polyphagous species Autographa gamma (L.) was completed in all temperatures, and increasing metabolic costs of development were thus correlated with SET.
Journal ArticleDOI
Effect of temperature and sex on growth patterns in nymphs of the mayfly Hexagenia hilineata in the laboratory
TL;DR: Rate of development from oviposition to first emergence increased with increasing temperatures in a linear fashion between 15 and 30°C, and survival of nymphs between the approximate size interval of 4–14 mm showed a significant decrease with increased temperatures.
Journal ArticleDOI
Effects of Weed Density and Defoliated or Undefoliated Soybeans (Glycine max) on Velvetleaf (Abutilon theophrasti) Development
TL;DR: Velvetleaf (Abutilon theophrasti Medic) grown under monoculture consistently exceeded velvetleaf intercropped with soybeans in leaf area, nodes with fully de- veloped leaves, canopy width, branches, and number of capsules as early as 3, 3, 4, 5, and 8 weeks, respectively, after simultaneous emergence.