Productive Performance of Wheat Based on Nitrogen Fertilization in Coverage

• 作者: Edelclaiton Daros Jo?o Augusto Lopes Pascoalino Luís César Cassol Michael Jonathan Fernandes Alves Milton Ferreira de Moraes Wilson Wagner Ribeiro Teixeira
• 来源期刊: 美国植物学期刊(英文)
• 学科: 医学
• 关键词: TRITICUM AESTIVUM GRAIN YIELD Nitrogen
• 年，卷（期）: 2015,（9）
• 页码范围: 1587-1593
• 页数: 7页
• 分类号: R73

摘要

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&middotha-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.