A proposal of simulation of wheat grain productivity by nitrogen and meteorological elements

International Journal of Development Research

Volume: 
7
Article ID: 
9279
8 pages
Research Article

A proposal of simulation of wheat grain productivity by nitrogen and meteorological elements

Ana Paula Brezolin Trautmann, José Antonio Gonzalez da Silva, Osmar Bruneslau Scremin, Anderson Marolli, Rubia Diana Mantai, Ângela Teresinha Woschinski De Mamann, Ari Higino Scremin and e Natiane Carolina Ferrari Basso

Abstract: 

The development of efficient simulation models can facilitate the crop planning and the crop predictability analysis. The objective of the study is to propose a simulation model of wheat grain productivity by the nitrogen supply management with variables related to the plant and the meteorological elements, in high succession systems and reduced N-residual release. In the study, two experiments were conducted in 2013, 2014 and 2015, one to quantify the biomass productivity and another one to stablish grain productivity. The design was a randomized block with four replicates in factorial 4 x 3, for N-fertilizer doses (0, 30, 60, 120 kg ha-1) and nutrient supply forms [single condition (100%) at the phenological stage V3 (third leaf expanded); fractionated, (70 and 30%) in the phenological stage V3/V6 (third and sixth leaf expanded); fractionated (70 and 30%) in the phenological stage V3/E (third leaf expanded and in the beginning of grain filling)], and respectively, in soy/wheat and corn/wheat systems. The proposed model that interacts polynomial regression with multiple linear regression is efficient in the simulation of wheat grain productivity in the single and fractionated supply of nitrogen with weather elements in the systems of high and low release of N-residual.

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