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Bioscience Journal
Article . 2013
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Germoplasma do gênero paspalum com potencial para produção de forragem

Authors: Lima Meirelles, Paulo Roberto de; Rocha Batista, Luiz Alberto; Costa, Ciniro; Berchiol da Silva, Marina Gabriela; Factori, Marco Aurelio; Franco da Silveira, Joao Paulo; Cavasano, Francielli Aparecida;

Germoplasma do gênero paspalum com potencial para produção de forragem

Abstract

Este estudo foi conduzido na Fazenda Canchim em São Carlos-SP, área física da Embrapa Pecuária Sudeste, objetivando selecionar, com base nas características agronômicas de produtividade de matéria seca e qualidade da forragem, os acessos das espécies do gênero Paspalum indicados por possuir potencialidade para utilização como plantas forrageiras. Foram avaliadas durante 3 anos, 22 gramíneas forrageiras, sendo 19 do gênero Paspalum e três testemunhas: Brachiaria decumbens, Andropogon gayanus cv. Baetí e Panicum maximum cv. Tanzânia-1, submetidos a dois níveis de intensificação: alto (adubação após cada corte e irrigação suplementar) e baixo (somente adubação de reposição anual sem irrigação). O delineamento experimental foi o de blocos casualizados, em esquema de parcelas subdivididas no espaço e no tempo, com duas repetições. As variáveis estudadas foram: produção de massa seca de forragem, digestibilidade in vitro da matéria seca e percentual de proteína bruta na matéria seca. Os acessos responderam ao nível de intensificação, minimizando os efeitos negativos da estacionalidade de produção. Com base nas variáveis estudadas, os acessos selecionados são: BRA-011401 (Paspalum glaucescens); BRA-011681 (P. atratum); BRA009661 (P. atratum) e BRA-019186 (P. regnellii).

This study was carried out in Fazenda Canchim in Sao Carlos-SP, physical base of Embrapa Southeast Livestock, aiming to select, based on the agronomic characteristics of productivity of dry matter and quality of the forage, the accesses of suitable gender Paspalum for possessing potentiality of use as foraging plants. Were evaluated for 3 years, with 22 forage grasses, being 19 of Paspalum and three more of control species: Brachiaria decumbens, Andropogon gayanus cv. Baet and Panicum maximum cv. Tanzania, submitted to two intensification levels: high (fertilizer after each cut and supplemental irrigation) and low (only fertilizer of annual replacement without irrigation). The experimental design was of split blocks subdivided in the space and time with two replications. The studied variables were: dry matter production, in vitro dry matter digestibility and crude protein content. The results show that the accesses responded to the intensification level minimizing the negative effect of the stational production. Based on the studied variables, the selected accesses were: BRA-011401 (Paspalum glaucescens); BRA-011681 (P. atratum); BRA009661 (P. atratum) and BRA-019186 (P. regnellii).

Country
Brazil
Keywords

Nutritional value, Agricultural Sciences, S, QH301-705.5, Digestibility, Agriculture, Biology (General), valor nutritivo., digestibilidade, produtividade, Productivity

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selected citations
These citations are derived from selected sources.
This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Citations provided by BIP!
popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
BIP!Impulse provided by BIP!
0
Average
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