Juliete Barros

AUTHOR: Juliete Barros
TITLE: NITROGEN DOSES IN MAIZE CROP CULTIVATED IN SUCCESSION OF SINGLE COVERED PLANTS UNDER DIRECT CERRADO PLANTING SYSTEM IN THE CERRADO (DOSES DE NITROGÊNIO NA CULTURA DO MILHO CULTIVADO EM SUCESSÃO A PLANTAS DE COBERTURA SOLTEIRA E CONSORCIADAS SOB SISTEMA DE PLANTIO DIRETO NO CERRADO)   
ADVISOR: Prof. Dr. Antônio Paulino da Costa Netto, Co-Advisor: Prof. Dr. Edésio Fialho dos Reis, Co-Advisor: Prof. Dr. Vanessa Cristina Stein
CONCENTRATION AREA: VEGETABLE PRODUCTION
RESOURCH LINE: SOILS AND PLANT NUTRITION
APPROVAL DATE: 01/28/2016

 

Abstract:

The use of cover crops in the no-tillage system brings new challenges for proper management of nitrogen fertilization in succession crops, especially the most demanding in this nutrient, such as corn. The present work aimed to evaluate nitrogen fertilization in maize in succession to cover plants in southwestern Goiás. The experiment was developed at the Federal University of Goiás - Jataí. The treatments consisted of a 5X4 factorial: five cover plants (brachiaria grass (Urochloa ruziziensis), crotalaria (Crotalaria spectabilis), sorghum (Sorghum bicolor) with brachiaria, sorghum with crotalaria and spontaneous plants) and four doses. N coverage (0, 50, 100, 150 kg ha-1) with four replications, totaling 80 plots. The experimental design was in randomized blocks. The intercropping of sorghum with crotalaria and brachiaria provided higher input of dry matter to the succession maize. Single or intercropping with forage sorghum provided higher yield of corn in succession. Maize in succession to cover crops was responsive to cover nitrogen rates.

 

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