NDLI: Plantas De Cobertura E Doses De Nitrogênio Em Pré-semeadura Em Algodoeiro

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Plantas De Cobertura E Doses De Nitrogênio Em Pré-semeadura Em Algodoeiro

Content Provider	Semantic Scholar
Author	Ferrari, Samuel
Copyright Year	2009
Abstract	The application of nitrogen and former crop residues maintenance, held in the till, must respectively meet the needs of culture and promote soil conservation.This study aimed to evaluate the effect of nitrogen pre-sowing of cotton crop and cover crop, established in tillage on the physical and chemical properties of soil and cotton plant development and yield. The experimental design was a randomized block consisting of three cover crops (radish, white oat and black oat) and four nitrogen levels (0, 30, 60, and 90 kg N ha) applied to the millet and cotton pre-sowing. At 80 days after cotton emergence in season of 2006/07 and 2007/08 leaves were collected for macronutrients foliar analysis. In April 2006, April 2007 and April 2008 cotton crop plots were harvested. In May 2006 and May 2007 soil samples were taken from depths of 0-5, 5-10 and 10-20 cm in order to analyze the soil nutrients and, in August 2006 and August 2007 were carried out the physical soil analysis to depths of 0-15, 15-30, 30-45 and 45-60 cm. The results obtained in depending on the use of ammonium sulphate in increasing doses, there was a decrease in pH, Ca and Mg in the surface soil, as well as the increase in exchangeable Al and the sulfur content of up to 20 cm. The radish provides increased levels of K in leaves of cotton, and the use of doses N 90 kg ha in presowing provided increased levels of N and S. The radish is a cover crop that provides yield increased. The cotton yield increased with the use of N 90 kg ha in pre-sowing.
File Format	PDF HTM / HTML
Alternate Webpage(s)	https://repositorio.unesp.br/bitstream/handle/11449/106162/ferrari_s_dr_ilha.pdf?isAllowed=y&sequence=1
Alternate Webpage(s)	https://www.feis.unesp.br/Home/DTA/STPG/agro/teses2009/samuel_ferrari_2009.pdf
Language	English
Access Restriction	Open
Content Type	Text
Resource Type	Article

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