Nutrição do tomateiro e a sua influência na preferência para abrigo, alimentação e oviposição de Bemisia tabaci (GENN.) biótipo B
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Data
2008-02-26
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Universidade Federal de Goiás
Resumo
Bemisia tabaci biotype B presently constitutes a great threat not only for the
tomato crop but to several other cultures. The objective of this research was to evaluate the
influence of the nutrition of tomato in the resistance induction for shelter, feeding and
oviposition of B. tabaci biotype B. The experiments were driven in Escola de Agronomia e
Engenharia de Alimentos (EA/UFG), Goiânia, Goiás, Brasil. Three experiments were
accomplished outdoors in temperature conditions, humidity and natural photoperiod. In
the first different sources of nitrogen were tested, in the second different ratios
nitrogen/potassium and in the third party different associations between corrected soil and
earthworm manure. Each experiment was subdivided in: with choice chance and without
chance of choice of the insect, the first one was carried out on randomized blocks design
and the second one completely randomized design. Each treatment had four replications,
with one plant per pot. In the first experiment the treatments used were: corrected soil
(without addition of fertilizers); potassium saltpeter; urea; phosphate monoamonic; nitrate
of calcium; sulfate of ammonium; chicken manure; bone flour; castor oil plant pie;
composed organic; and earthworm manure. In the second experiment the ratios were
compared N/K: 1/1; 2/1; 4/1; 8/1; 1/2; 1/4; and 1/8. In the third experiment the associations
corrected soil were compared + earthworm manure: 100% + 0%; 80% + 20%; 60% + 40%;
40% + 60%; 20% + 80%; 0% + 100%. Five evaluations on the observation of the behavior
of B. tabaci biotype B in relation to the feeding preference and shelter were accomplished:
3, 27, 51, 75 and 99 hours after the insect infestation. Leaves were collected at four days
after the insect infestation, and appraised in laboratory for oviposition analysis. The
different sources of nitrogen, ratios nitrogen/potassium, and associations between corrected
soil and earthworm manure used in the tomato fertilization did not induce any effect at the
feeding or oviposition of B. tabaci biotype B behavior.
Descrição
Palavras-chave
equilíbrio nutricional , trofobiose , seleção de hospedeiro , nutrição mineral , nutrição orgânica , nutritional balance , trophobiose , selection host , mineral nutrition , organic
nutrition , 1.Bemisia tabaci (GENN.) biótipo B Tomateiro 2.Mosca-branca Tomateiro 3.Tomateiro Adubação
mineral 4.Tomateiro Adubação orgânica 5.Tomateiro Nutrição Avaliação 6.Pragas agrícolas
Citação
OLIVEIRA, Marcos Fernandes. Nutrition of the tomato and her influence in the preference for
shelter, feeding and oviposition of Bemisia tabaci (Genn.) biotype B. 2008. 108 f. Dissertação (Mestrado em Ciências Agrárias) - Universidade Federal de Goiás, Goiânia, 2008.