Location of Repository

Produtividade de milho adubado com composto de lodo de esgoto e fosfato natural de Gafsa Yield of corn fertilized with sewage sludge compost and Gafsa rock phosphate

By Geraldo R. Z. Junio, Regynaldo A. Sampaio, Altina L. Nascimento, Guilherme B. Santos, Leonardo D. T. Santos and Luiz A. Fernandes

Abstract

Neste trabalho propôs-se avaliar a produtividade e os teores de nutrientes no solo e na planta de milho em resposta à adubação com doses de composto de lodo de esgoto e de fosfato natural. O trabalho foi realizado em Cambissolo Háplico com os tratamentos em esquema fatorial 2 x 4 correspondentes a 2 doses de fosfato natural de gafsa (0 e 90 kg ha-1 de P2O5) e 4 doses de composto de lodo de esgoto (0, 25, 50 e 75 t ha-1, em base seca). O delineamento experimental utilizado foi em blocos casualizados, com 3 repetições. A produtividade do milho e os teores de nutrientes no solo e na planta não foram, de modo geral, influenciados pela adubação com fosfato natural. Entretanto, a produtividade de milho e os teores de nitrogênio, fósforo, potássio, cálcio e enxofre no solo e nitrogênio, fósforo e potássio nas folhas, aumentaram com a adição de composto de lodo de esgoto ao solo, sendo a dose ótima recomendada de 75 t ha-1.<br>The aim of this study was to evaluate the yield and concentrations of nutrients in soil and corn plant in response to fertilization with different doses of sewage sludge compost and Gafsa rock phosphate. The work was conducted at experimental area of the ICA/UFMG in a Haplic Cambisol. The treatments, in a factorial 2 x 4, corresponded to two rates of Gafsa rock phosphate (0 and 90 kg P2O5 ha-1) and four rates of sewage sludge compost (0, 25, 50 and 75 t ha-1, on dry basis). The experimental design was randomized blocks, with three replications. In general, the corn yield and the concentrations of macronutrients in soil and plant were not influenced by fertilization with Gafsa rock phosphate. However, corn yield and nitrogen, phosphorus, potassium, calcium and sulfur concentration in the soil and nitrogen, phosphorus and potassium concentration in leaf increased with the addition of sewage sludge compost to soil, being the optimal recommended rate of 75 t ha-1

Topics: Zea mays, biossólido, fosfato natural reativo, Zea mays, biosolids, reactive phosphate rock, Agriculture (General), S1-972, Agriculture, S, DOAJ:Agriculture (General), DOAJ:Agriculture and Food Sciences
Publisher: Universidade Federal de Campina Grande
Year: 2013
OAI identifier: oai:doaj.org/article:8c8786ce26194aaab07dc2f376f172d8
Journal:
Download PDF:
Sorry, we are unable to provide the full text but you may find it at the following location(s):
  • https://doaj.org/toc/1807-1929 (external link)
  • https://doaj.org/toc/1415-4366 (external link)
  • http://www.scielo.br/scielo.ph... (external link)
  • https://doaj.org/article/8c878... (external link)
  • Suggested articles


    To submit an update or takedown request for this paper, please submit an Update/Correction/Removal Request.