Chlorophyll evaluation methods in Brachiaria brizantha brs Piatã added with poultry litter compost / Comparação de métodos de avaliação de conteúdos de clorofila em Brachiaria brizantha brs Piatã adubada com composto de cama de aviário
Bol. ind. anim. (Impr.)
; 702013.
Article
em En
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LILACS-Express
| VETINDEX
| ID: biblio-1466522
Biblioteca responsável:
BR68.1
ABSTRACT
One of the major limitations for pastures high production is the low fertility of tropical soils. In general, the nutrient reposition through chemical fertilizers increases the cost of production and can unbalance the plant besides the environment pollution. Recycling solid residues from agribusiness is a sustainable alternative for farmers. Among the residues, the poultry litter (PL) aerobically fermented is a very good bio fertilizer for pastures. The Piatã Grass (Brachiaria brizantha) is a new option for the pasture market and can be used for bovine, equine or ovine. The fast diagnosis of the nutritional stage of this plant, based upon portable methods as the Dualex, measuring leaf light reflectance is a practical alternative. By this way, it is possible to offer to the herd high nutritional food, correcting eventual shortage, mainly nitrogen. Nitrogen nutrition is directely related to chlorophyll content in the leaf blade. This study aimed to verify the effects of doses of PL over total chlorophyll, in comparison to two methods of evaluation Dualex Scientific 4.0 and Spectrophotometer Analysis according to Lichtenthaler & Wellburn (1983). The experiment was conducted in greenhouse conditions, at IZ, Nova Odessa, with a Haplortox soil, between May and July, 2013. Treatments consisted of five compost doses (PL) 0, 20, 40, 60 and 120 Mg ha-1, with the following chemica
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Base de dados:
VETINDEX
Idioma:
En
Revista:
Bol. ind. anim. (Impr.)
Ano de publicação:
2013
Tipo de documento:
Article