Title:	Production, chemical and mineral composition of Pornunça (Manihot sp.) under different planting densities and phosphorus fertilization.
Authors:	SILVA, G. de L. S. CARNEIRO, M. S. de S. ANDRADE, A. P. de ARAÚJO, J. S. MEDEIROS, G. M. CÂNDIDO, M. J. D. EDVAN, R. L. MAGALHÃES, J. A.
Affiliation:	Guilherme de Lira Sobral Silva, Universidade Federal do Ceará – UFCE Maria Socorro de Souza Carneiro, Universidade Federal do Ceará – UFCE Alberício Pereira de Andrade, Universidade Federal Rural de Pernambuco – UFRPE Jucilene Silva Araújo, Instituto Nacional do Semiárido – INSA Geovergue Rodrigues Medeiros, Instituto Nacional do Semiárido – INSA Magno José Duarte Cândido, Universidade Federal do Ceará – UFCE Ricardo Loiola Edvan, Universidade Federal do Piuaí – UFPI João Avelar Magalhães, Empresa Brasileira de Pesquisa Agropecuária - Embrapa Meio-Norte.
Date Issued:	2018
Citation:	Revista Electrónica de Veterinaria - REDVET, v. 19, n. 7, p. 1-12, jul. 2018.
Description:	This study aimed to evaluate the effect of different planting densities and phosphorus fertilization on yield, chemical and mineral composition of Pornunça (Manihot sp.) cultivated under rainfed system, from May 2010 to October 2011. It was adopted the randomized blocks design in a factorial 4 x 4 with three replications, 4 spacing (1.5 x 1.5, 1.5 x 2.0, 2.0 x 2.0 and 2, 5 x 2.0 meters) and 4 phosphorus levels (0.0, 56.66, 113.32 and 169.98 g plant-1 superphosphate). For the total dry mass (TDM) of Pornunça there was effect (P=0.023) isolated from different plant spacing used, and the spacing 1.5 m x 2.0 m provided greater TDM. The planting spacing and phosphorus fertilization showed interaction effect (P<0.05) in the chemical composition only for organic matter and mineral composition presented individual effect for phosphorus levels in the soil and in the phosphorus content of Pornunça plant. For the other variables, there was no effect on the interaction and individual factor (planting spacing and phosphorus fertilization). In dry conditions, planting spacing influences the dry matter forage production and organic matter Pornunça, presented greater value for both the spacing of 1.5 m x 2.0 m. Fertilizing with simple superphosphate increases soil organic matter of Pornunça, until the dosage of 56.66 g plant-1 in the spacing of 1.5 m x 2.0 m, and linearly for the phosphorus content of the plant used regardlessof spacing.
Thesagro:	Caatinga Maniçoba Forragem
NAL Thesaurus:	Forage Semiarid zones Manihot
Type of Material:	Artigo de periódico
Access:	openAccess
Appears in Collections:	Artigo em periódico indexado (CPAMN)