Effects of Insecticides on Corn Earworm (Heliothis Zea (Boddie)) Larvae which Were Fed on Several Soybean Varieties
Author: Raden M. Saleh
Publisher:
Published: 1985
Total Pages: 112
ISBN-13:
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Author: Raden M. Saleh
Publisher:
Published: 1985
Total Pages: 112
ISBN-13:
DOWNLOAD EBOOKAuthor: Raden M. Saleh
Publisher:
Published: 1988
Total Pages: 254
ISBN-13:
DOWNLOAD EBOOKAuthor:
Publisher:
Published: 1993
Total Pages: 328
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DOWNLOAD EBOOKAuthor: Kentucky Agricultural Experiment Station
Publisher:
Published: 1985
Total Pages: 878
ISBN-13:
DOWNLOAD EBOOKFirst- annual reports include also its Bulletins, no. 1-
Author: Kentucky Agricultural Experiment Station
Publisher:
Published: 1985
Total Pages: 324
ISBN-13:
DOWNLOAD EBOOKFirst- annual reports include also its Bulletins, no. 1-
Author: National Academies of Sciences, Engineering, and Medicine
Publisher: National Academies Press
Published: 2017-01-28
Total Pages: 607
ISBN-13: 0309437385
DOWNLOAD EBOOKGenetically engineered (GE) crops were first introduced commercially in the 1990s. After two decades of production, some groups and individuals remain critical of the technology based on their concerns about possible adverse effects on human health, the environment, and ethical considerations. At the same time, others are concerned that the technology is not reaching its potential to improve human health and the environment because of stringent regulations and reduced public funding to develop products offering more benefits to society. While the debate about these and other questions related to the genetic engineering techniques of the first 20 years goes on, emerging genetic-engineering technologies are adding new complexities to the conversation. Genetically Engineered Crops builds on previous related Academies reports published between 1987 and 2010 by undertaking a retrospective examination of the purported positive and adverse effects of GE crops and to anticipate what emerging genetic-engineering technologies hold for the future. This report indicates where there are uncertainties about the economic, agronomic, health, safety, or other impacts of GE crops and food, and makes recommendations to fill gaps in safety assessments, increase regulatory clarity, and improve innovations in and access to GE technology.
Author: Brian Patrick Adams
Publisher:
Published: 2015
Total Pages: 111
ISBN-13:
DOWNLOAD EBOOKInteractions between corn earworm, Helicoverpa zea (Boddie), and soybean, Glycine max L. (Merrill), were investigated in the Mid-South to evaluate thresholds and damage levels. Field studies were conducted in both indeterminate and determinate modern cultivars to evaluate damage, critical injury levels, and soybean response to simulated corn earworm injury. Field studies were also conducted to evaluate the response of indeterminate cultivars to infestations of corn earworm. Field studies were also conducted to investigate the relationship between pyrethroid insecticide application and corn earworm oviposition in soybean. Results of field studies involving simulated corn earworm damage indicated the need for a dynamic threshold that becomes more conservative as soybean phenology progressed through the reproductive growth stages. This suggested that soybean was more tolerant to fruit loss during the earlier reproductive stages and was able to compensate for fruit loss better during this time than at later growth stages. Results of field studies involving infestations of corn earworm indicated that current thresholds are likely too liberal. This resulted in economic injury level tables being constructed based upon a range of crop values and control costs, however, a general action threshold was also recommended for indeterminate soybean in the Mid-South. Field study results investigating the relationship of pyrethroid application and corn earworm oviposition indicated that even in the presence of an insecticide, corn earworm prefers to oviposit in the upper portion of the canopy, as well as on the leaves as opposed to all other plant parts, consistent with all previous literature.
Author:
Publisher:
Published: 1985
Total Pages: 36
ISBN-13:
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Publisher:
Published: 1968
Total Pages: 910
ISBN-13:
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