Nutrient content affecting Spodoptera frugiperda and Dalbulus maidis occurrence in corn

CRISTINA SCHETINO BASTOS; JO(A)O CARLOS CARDOSO GALV(A)O; MARCELO COUTINHO PICANCO; PAULO ROBERTO GOMES PEREIRA; PAULO ROBERTO CECON

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Nutrient content affecting Spodoptera frugiperda and Dalbulus maidis occurrence in corn

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This work aims to study the effect of the nutrient contents in the leaves of corn on the incidence of Spodopterafrugiperda (Smith) (Lepidoptera: Noctuidae) and Dalbulus maidis (Delong & Wolcott) (Homoptera: Cicadellidae). The treatments were represented by unfertilized corn plants and corn plants fertilized with 250 kg of the formulation 4-14-8 (N-P-K) +100 kg of ammonium sulfate (AS)/ha and 500 kg of the formulation 4-14-8 (N-P-K) +200 kg of AS/ha, arranged in randomized blocks with four replicates. Attacks by S.frugiperda and D. maidis were higher as the nitrogen, sulfur, calcium and copper content in the leaves of corn increased. The effects of calcium and copper found in this study were not consistent with that of lower susceptibility associated with higher levels of these nutrients mentioned in the literature. We believe that there was a cumulative effect of the nutrients altogether, building up a nutritiously better vegetable which in turn had less reserve for defense, or that the content of both nutrients in the leaves were not high enough to induce such effects.

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《中国昆虫科学：英文版》 |2007年第2期|117-123|共7页
作者
CRISTINA SCHETINO BASTOS; JO(A)O CARLOS CARDOSO GALV(A)O; MARCELO COUTINHO PICANCO; PAULO ROBERTO GOMES PEREIRA; PAULO ROBERTO CECON;
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作者单位

EMBRAPA/Algod(a)o, Centenário, Campina Grande, PB, Brazil;

Departamento de Fitotecnia, Campus Universitário, Universidade Federal de Vicosa (UFV), Vicosa, MG, Brazil;

Departamento de Biologia Animal, Campus Universitário, Universidade Federal de Vicosa (UFV), Vicosa, MG, Brazil;

Departamento de Fitotecnia, Campus Universitário, Universidade Federal de Vicosa (UFV), Vicosa, MG, Brazil;

Departamento de Informática, Campus Universitário, Universidade Federal de Vicosa (UFV), Vicosa, MG, Brazil;

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正文语种 chi
中图分类昆虫学;
关键词
calcium, copper, corn cicada, fall armyworm, fertilization, nitrogen, sulfur;

机译：钙;铜;玉米蝉;秋天粘虫;施肥;氮;硫;

Nutrient content affecting Spodoptera frugiperda and Dalbulus maidis occurrence in corn

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