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Productive Performance of Wheat Based on Nitrogen Fertilization in Coverage

American Journal of Plant Sciences 2015年第9期6卷 1587-1593页

作者： michael jonathan fernandes alves Wilson Wagner Ribeiro Teixeira Edelclaiton Daros Luís César Cassol Joao Augusto Lopes Pascoalino Milton Ferreira de Moraes Department of Plant Science and Crop Protection Federal University of ParanaCuritibaBrazil Department of Soil Science Federal University of ParanáCuritibaBrazil University of ParanáFederal Technology Pato BrancoBrazil

The objective of this work was to evaluate genotypes of wheat depending on doses of N in order to determine the best value of N and the components of productivity of wheat. Experiment was carried out in Pato Branco—PR in soil classified as Eutrophic typical RED LATOSOL. The experimental design was randomized blocks, in 3 × 5 (× N doses genotypes), with three repetitions. The genotypes were: CD 108, CD 115 and BRS 220, and the doses of n were: zero;20;40;80 and 120 kg of N·ha-1, applied at the beginning of tillering. After harvest assessed number of Spike (NE), Tang (EC) length, grains per Spike (GE), mass of thousand grains (MMG), grain yield (R) and weight/HL (PH), application of N increased the NE and R, and however decreased to MMG. The genotypes differed among themselves, featuring better performance of the NE (the BRS 220), CE (the CD 115) and R (the CD 108). There were positive correlations between the doses of N with the NE and R and be-tween NE with the R, and negative correlation between doses of N with the MMG. It is concluded that the NE is the main factor that affects the R with N supply.

关键词： Triticum aestivum Grain Yield Nitrogen

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