Influência da irrigação, da densidade de plantio e da adubação nitrogenada nas características morfogênicas, estruturais e de produção do capim-tanzânia


Autoria(s): Magalhães, Marcela de Azevedo; Martuscello, Janaina Azevedo; da Fonseca, Dilermando Miranda; de Oliveira, Ivanna Moraes; de Freitas, Fabrício Paiva; Faria, Dawson José Guimarães; de Oliveira, Rubens Alves; Ribeiro Júnior, José Ivo
Contribuinte(s)

Universidade Estadual Paulista (UNESP)

Data(s)

27/05/2014

27/05/2014

01/12/2011

Resumo

This experiment was carried out to evaluate canopy height of guinea grass with 95% of photosynthetic active radiation interception and quantify the nitrogen fertilization influence and plants' density on the morphogenesis and structural characteristics of Tanzania grass. Four doses of N (0, 80, 160 e 320 kg.ha -1), were arranged with three plant densities (9, 25 and 49 plants.m -2), according to 4 × 3 completely randomized design, with three repetitions. Total dry matter (DM) accumulation throughout the experimental period was influenced by nitrogen fertilization and plants' density. In the rainy period, the higher nitrogen fertilization decreased the harvesting intervals, and consequently, increased the number of harvests. The rate of leaf appearance and the phyllochron were influenced only under nitrogen fertilization in the transition period of rainy and dry weather. Tanzania grass canopy height under 95% of light interception was positively influenced because of the plant densities in rainy period and transition period between rainy/drought and drought. Tanzania grass height under 95% of light interception presented variations along the evaluations and the values were higher (near 70 cm) in the rainy period, followed by transition period rain/drought and drought. © 2011 Sociedade Brasileira de Zootecnia.

Formato

2308-2317

Identificador

http://dx.doi.org/10.1590/S1516-35982011001100005

Revista Brasileira de Zootecnia, v. 40, n. 11, p. 2308-2317, 2011.

1516-3598

1806-9290

http://hdl.handle.net/11449/72884

10.1590/S1516-35982011001100005

S1516-35982011001100005

WOS:000297796400005

2-s2.0-84856275612

2-s2.0-84856275612.pdf

Idioma(s)

por

Relação

Revista Brasileira de Zootecnia

Direitos

openAccess

Palavras-Chave #Density seed #Fertilization #Panicum maximum #Panicum
Tipo

info:eu-repo/semantics/article