desempenho inicial de arroz irrigado decorrentes da aplicação de fertilizantes na seletividade de herbicidas

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ID: 209671
2016
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Abstract

O arroz, alimento apreciado na mesa do consumidor em todo mundo, possui amplo espectro produtivo no Brasil, devido às condições ideais de clima e solo encontrados no país, as quais possibilitam produção tanto em terras altas como em terras baixas, garantindo o abastecimento do mercado interno e externo. O presente estudo objetivou avaliar os efeitos decorrentes da aplicação de fertilizantes no desempenho inicial da cultura do arroz irrigado e na seletividade a herbicidas. O experimento foi conduzido em casa de vegetação, nas dependências da Faculdade de agronomia Eliseu Maciel – IES, Cidade (UF). O delineamento utilizado foi inteiramente casualizado, disposto em esquema fatorial (3 x 3) + 1, com 4 repetições, onde o fator A corresponde aos fertilizantes (Biozyme TF®, GreenFactor® e Pilatus®) e o fator B aos herbicidas (cialofope-butil, bispiribaque-sódico e profoxidim) registrados para a cultura do arroz irrigado, além do tratamento controle, sem aplicação de fertilizante e sem aplicação de herbicidas. Avaliou-se o comprimento de parte aérea aos 7 e 21 dias após (DAH), massa da matéria seca aos 21 DAH, fitotoxicidade aos 7, 14 e 21 DAH e teor de clorofila através de leituras  com clorofilômetro. A partir dos resultados obtidos, observou-se que a aplicação dos fertilizantes não influenciou no desenvolvimento inicial da cultura do arroz e na seletividade dos herbicidas aplicados. Em relação à avaliação de fitotoxicidade, o profoxidim causou os maiores índices.

Performance irrigated rice initial resulting from fertilizer application in herbicide selectivity

Abstract: Rice, food enjoyed at the dinner table in the world, has extensive production spectrum in Brazil, due to the ideal conditions of climate and soil found in the country, which enable production of both upland and lowland, ensuring market supply internal and external. This study aimed to evaluate the effects of the application of fertilizers in the initial performance of irrigated rice and selectivity to herbicides. The experiment was conducted in a greenhouse on the premises of Agronomy Faculty Eliseu Maciel - IES, City (UF). The design was completely randomized, arranged in a factorial scheme (3 x 3) + 1, with 4 replications, where factor A corresponds to fertilizers (Biozyme TF®, GreenFactor® and Pilatus®) and factor B herbicide (cyhalofop butyl, bispyribac-sodium and profoxidim) registered for irrigated rice in addition to the control treatment without fertilizer application and without application of herbicides. We evaluated the shoot length at 7 and 21 days  (DAH), dry matter to 21 DAH, phytotoxicity at 7, 14 and 21 DAH and chlorophyll content through readings with chlorophyll. From the results, it was observed that the application of fertilizers did not affect the early development of rice cultivation and selectivity of herbicides applied. Regarding the assessment of phytotoxicity, the profoxidim caused the highest rates.

 

Reference Key
rosa2016revistadesempenho Use this key to autocite in the manuscript while using SciMatic Manuscript Manager or Thesis Manager
Authors ;Thais D'Avila Rosa;Diogo Balbé Helgueira;Daniele Brandstetter Rodrigues;Diego Cardoso de Medeiros;Luis Antonio de Avila
Journal sensors
Year 2016
DOI
10.18378/rvads.v11i4.4259
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