Single and fractioned supply of nitrogen in wheat productivity

International Journal of Development Research

Article ID: 
7 pages
Research Article

Single and fractioned supply of nitrogen in wheat productivity

Juliane S. P. Costa, Rubia D. Mantai, José A. G. da Silva, Ari H. Scremin, Eldair F. Dornelles, Roberto Carbonera, Ana Paula B. Trautmann and Adriana R. Kraisig


Higher wheat productivitycan be obtained according tothe form of nitrogen supply. The objective of this study wasto increase the biomass and wheat grain productivitythroughthe forms of nitrogen supplyinconditions of favorable and unfavorable years,in corn/wheat and soybean/wheat succession systems. The study was conducted in 2014 and 2015, in randomized block design, with four replicates in a 4 x 3 factorial, for N-fertilizer doses 0, 30, 60, 120 kg ha-1 and nutrient supply forms [single dose 100% at the phenological stage V3 third leaf expanded; fractioned 70 and 30% at the V3/V6 phenological stages third and sixth leaves expanded, respectively and; fractioned 70 and 30% at the V3/R1 phenological stages third leaf expanded and early grain filling], respectively, in soybean/wheat and corn/wheat succession systems. In general, the increase of biomass productivity in wheat can be obtainedthroughthe fractionation in the phenological stage V3/V6, but it is not always accompanied of the highestgrain productivity. Regardlessof the succession system, in favorable years of cultivation, the nitrogen supply in single dose increases grain productivity; in unfavorable years, the nutrient fractionation is more appropriate.

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