Author(s)

Michael Jonathan Fernandes Alves^1*, Wilson Wagner Ribeiro Teixeira², Edelclaiton Daros¹, Luís César Cassol³, João Augusto Lopes Pascoalino², Milton Ferreira de Moraes²

¹Department of Plant Science and Crop Protection, Federal University of Parana, Curitiba, Brazil.
²Department of Soil Science, Federal University of Paraná, Curitiba, Brazil.
³University of Paraná Federal Technology, Pato Branco, Brazil.

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.

Triticum aestivum, Grain Yield, Nitrogen

Fernandes Alves, M. , Ribeiro Teixeira, W. , Daros, E. , Cassol, L. , Lopes Pascoalino, J. and de Moraes, M. (2015) Productive Performance of Wheat Based on Nitrogen Fertilization in Coverage. American Journal of Plant Sciences, 6, 1587-1593. doi: 10.4236/ajps.2015.69159.