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Planta Daninha

Print version ISSN 0100-8358

Planta daninha vol.3 no.2 Viçosa Dec. 1980

http://dx.doi.org/10.1590/S0100-83581980000200008 

ARTIGO

 

Aplicação, em pré-colheita, de dessecante em duas cultivares de soja (Glycine max (L. ) Merril) III — Efeitos sobre a composição química (proteína, óleo e cinzas) e resíduos nas sementes

 

 

JC.DuriganI; J.F. DuriganII; N.M.CarvalhoIII

IProf. da Disciplina de "Herbicidas e Plantas Daninhas" da Faculdade de Ciências Agrárias e Veterinárias de Jaboticabal - UNESP
IIProf. da Disciplina de "Tecnologia dos Produtos Agropecuários" da FCAV de Jaboticabal - UNESP
IIIProf. da Disciplina de "Tecnologia de Sementes" da FCAV de Jaboticabal - UNESP

 

 


RESUMO

A aplicação pré-colheita do dessecante paraquat, quando real izada a partir das primeiras épocas (75 e 72 dias após o início do florescimento, para a Santa Rosa e IAC-2, respectivamente) não modificaram os teores com que ocorreram normalmente, proteína, extrato etéreo e cinzas nos grãos.
As análises do resíduo de paraquat nos grãos colhidos, mostram claramente que não se deve recomendar tal prática às lavouras de soja, cujo objetivo final seja o fornecimento de grãos para a alimentação humana e animal. Entretanto pode ser indicada, sem maiores restrições, àquelas cuja finalidade é a produção de sementes comerciais.

Palavras-chaves: dessecante, semente, composição química, resíduo.


SUMMARY

This work showed that the application of paraquat to either determinate or indeterminate cultivars of soybean when the seeds have reached physiological maturity does not affect the chemical composition but it was verified that the levels of paraquat residue in the grains was too high for the material to be recommended for human or animal consumption.

Keywords: desiccant, seed, chemical composition, residue.


 

 

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Parte da dissertação do primeiro autor para obtenção do grau de Mestre em Ciências, pela UNESP.

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