Reactions of the different breeding season corns as a function of injury of cotton bollworm (Helicoverpa armigera Hbn.).

Keszthelyi, Sándor and Pozsgai, J. and Pál-Fám, Ferenc István (2009) Reactions of the different breeding season corns as a function of injury of cotton bollworm (Helicoverpa armigera Hbn.). CEREAL RESEARCH COMMUNICATIONS, 37 (2). pp. 321-326. ISSN 0133-3720

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The aim of present investigations was the increasing of knowledge of the cotton bollworm’s ( Helicoverpa armigera Hbn.) (CB) damages in the different breeding season corns. The damage examinations were made in a 29.2 hectares acreage between Igal and Kazsok villages (Somogy county) on the basis of the flight observation at the end of August 2008. We examined the measure of damages and yield losses based on the collected ears belonging to different breeding season corns (FAO 200–299, FAO 300–399, FAO 400–499, FAO 500–599). The relationship between the breeding season and the damages was examined by variance analysis (one-way anova). The collected samples were examined in analytic laboratory in order to calculate the quantitative alteration of the fundamental in-kernel air dry content values (raw protein, raw fat, starch).Our results proved the significant increasing of damage percentages (FAO 200–299: 8.66%; FAO 500–599: 15.33%), surface damages (cm 2 ) (P = 0.026) and the calculated weight loss of damaged ears (P=0.014) parallel with the increasing of the breeding season length. We confirmed the “forced maturing” in the case of the earlier hybrids in the consequence of the damage. We recorded a decreasing percentage (correlate to the draw matter) of the starch and the raw fat (average decreasing: starch: 1.72; raw fat: 0.26) as well as the increasing starch loss per one hectare, agreeing with the breeding season length increase (starch loss/one hectare: FAO 200–299: 1.54%; FAO 500–599: 2.72%). We observed the quantitative increasing of the raw protein as a function of CB’s damage too, which can be explained by a physiological response to the biotic stress.

Item Type: Article
Uncontrolled Keywords: cotton bollworm, breeding season of corn, damage of ear
Subjects: G Geography. Anthropology. Recreation / földrajz, antropológia, kikapcsolódás > GE Environmental Sciences / környezettudomány
S Agriculture / mezőgazdaság > SB Plant culture / növénytermesztés
Depositing User: MTMT SWORD
Date Deposited: 25 Apr 2014 12:17
Last Modified: 26 Apr 2014 05:16

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