Author: Joseph L. DespinsPublisher:
ISBN:
Category : European corn borer
Languages : en
Pages : 130
Book Description
Phenology of the European Corn Borer, Ostrinia Nubilalis (Hubner) (Lepidoptera, Pyralidae) in Virginia
Author: Joseph L. DespinsPublisher:
ISBN:
Category : European corn borer
Languages : en
Pages : 130
Book Description
A Partial Life Table of the European Corn Borer, Ostrinia Nubilalis Hübner (Lepidoptera, Pyralidae), in Central Illinois
Author: Gary Edward TatroEuropean Corn Borer, Ostrinia Nubilalis (Hubner) (Insecta: Lepidoptera: Pyralidae)
Author: Natural Control of the European Corn Borer, Ostrinia Nubilalis (Hübner), in New York
Author: Richard John WhitmanPublisher:
ISBN:
Category : European corn borer
Languages : en
Pages : 422
Book Description
Post-diapause and Larval Development of the European Corn Borer, Ostrinia Nubilalis (Hübner) (Lepidoptera, Pyralidae), in North Dakota
Author: Mark William HoardPublisher:
ISBN:
Category : European corn borer
Languages : en
Pages : 188
Book Description
Dispersion, Distribution, and Subsequent Infestations of the European Corn Borer, Ostrinia Nubilalis (Hübner), Among Southern Minnesota Corn Fields
Author: David E. LeggPublisher:
ISBN:
Category : European corn borer
Languages : en
Pages : 316
Book Description
The European Corn Borer, Pyrausta Nubilalis Hübner
Author: Alexander Edmond CancePublisher:
ISBN:
Category : Ammonia as fertilizer
Languages : en
Pages : 428
Book Description
The Effects of the Second Generation European Corn Borer, Ostrinia Nubilalis (Hubner) (Lepidoptera
Author: P.A. VianaPublisher:
ISBN:
Category :
Languages : en
Pages : 126
Book Description
Research was conducted in 1981 and 1982 to quatify losses due to stalk breakage and dropped ears caused by 2nd-generation European corn borer under present corn production systems in Indiana. Insecticide treated and untreated portions of corn fields were compared at all test locations. Artificial infestation was achieved by pinning 2 egg masses (near hatching) through the leaf midrib of the ear leaf during the period of pollen shed. Chlorpyrifos (0.96 kg a.i./ha) was applied 1 or 2 times using a solo 425R knapsack sprayer and a Hi-BoyR sprayer in 1981 and 1982 experiments, respectively. Control was determined by counting entrance holes in the stalk and cavities caused by corn borer feeding in the stalk and ear shank. Stalk breakage before harvest was categorized as to its location in the stalk as top, above-ear, below-ear and bottom. Plants with visible ear shank damage were noted. Ears dropped to the ground before harvest and unpicked ears after harvest were counted and collected. Number of entrance holes was reduced by insecticide application in all experiments. The number of stalk cavities was lower in insecticide=treated plots than in untreated plots in all experiments, although nor significantly different in the 1981 experiment. Insecticide application had an effect on number of the borer cavities in the ear shank only in the 1981 experiment. Grain weight was higher in plots with insecticide application than no-insecticide treatment in 1981. No difference in grain weight was detected in 1982. the number (...).
Author: Cynthia Lee Hsu
Author: F. W. Poos