Chemical Control Of Lesser Cornstalk Borers In Peanuts

Author : John Carlton French
Publisher :
ISBN 13 :
Total Pages : 80 pages
Book Rating : 4.:/5 (78 download)

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Download or read book The Damage and Control of the Lesser Cornstalk Borer, Elasmopalpus Lignosellus (Zeller), on Peanuts and the Effect of Soil Moisture on Its Biology written by John Carlton French and published by . This book was released on 1971 with total page 80 pages. Available in PDF, EPUB and Kindle. Book excerpt: A study was conducted in Georgia between April 1968, and Septermber 1970, to determine the magnitude and scope of the lesser cornstalk borer, Elasmopalpus lignosellus (Zeller), problem on peanuts in Georgia, the relationship of moisture to the problem, and to develop a chemical control. A survey was conducted among country agents to elicit information on the importance of the insect as a pest of peanuts in 1967 and 1968. Field observations were made during earch of the three production seasons covered by this study to determine types of damage and environmental conditions related to damaging infestations. A laboratory study was conducted to determine the effect of air dried, wilting percent and field capacity soil moisture levels on the duration of the larval-pupal stages. Five chemical control test were conducted; two were artificially infested, and three were conducted against naturally occurring populations. The survey revealed that the lesser cornstalk borer was usually ranked as one of the three most important pests of peanuts by county agents. In 1967, damage to peanuts by the insect was estimated at almost 5 million dollars and in l968, the estimated loss was 8.5 million dollars. Field observations revealed that all parts of the peanut plant were fed upon by the borer, but pag and damage were apparently of greatest economic importance. Damaging infestations were always associated with periods of moisture deficity and were most often found on light, sandy soils. Rearing the insect on soil.....................