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- Title
Efeito residual do nitrogênio na cultura do milho no sistema de produção integração lavoura-pecuária.
- Authors
Sandini, Itacir Eloi; de Moraes, Anibal; Pelissari, Adelino; Neumann, Mikael; Falbo, Margarete Kimie; Novakowiski, Jaqueline Huzar
- Abstract
The nitrogen is an element required in large quantities by plants. Its application in the pasture, in croplivestock integration, would provoke high animal productivity in winter and high vegetal productivity in summer. This study aimed to evaluate the residual effect of nitrogen application in the pasture, with and without grazing sheep, under maize culture. The experiment was conducted in Guarapuava (PR) in the 2007/08 season in a randomized block design with split plots. The main parcel consisted of treatments with N in winter (N-TI = 0, 75, 150 e 225kg ha-1 de N) in pasture of white oat (Avena sativa L.) and ryegrass (Lolium multiflorum Lam.), in subparcel with (CP) and without grazing (SP) sheep and, in subsubparcels N in summer (N-TV=0; 75; 150; 225 e 300kg ha-1 de N). The sowing of hybrid 30F53 occurred on 10/24/07. The variables evaluated were: pasture dry mass, productivity, numbers of rows, grains per rows, grains per spike and grain thousand mass. The dry mass plant CP and SP had quadratic response to the level of N-TI and N-TV. The productivity of grains, as well as the number of rows and grains per spike, was not affected by grazing. There was quadratic response in productivity of grains, due to the increase of nitrogen levels NTI and N-TV.
- Subjects
GUARAPUAVA (Brazil); BRAZIL; EFFECT of nitrogen on plants; LIVESTOCK productivity; EFFECT of grazing on corn; BLOCK designs; PASTURE management
- Publication
Ciência Rural, 2011, Vol 41, Issue 8, p1315
- ISSN
0103-8478
- Publication type
Article
- DOI
10.1590/S0103-84782011005000099