Agronomics characteritcs of wheat cultivars in response to urea treaded with urease inhibitor in coverage

Abstract

Reductions of nitrogen losses applied in coverage on the wheat crop is a necessity in the national wheat production, this advanced can increase grains yield, and for this, the use of nitrogen sources enriched with urease inhibitors can be a alternative for producers. In this context the objective of this study was to verify the different nitrogen fertilizers efficiency, with and without urease inhibitors, in coverage on the wheat crop and its effects on the expression of agronomics traits. The experiment was conducted in Guarapuava on the season of 2012, in the Experimental Camp of the Agronomy Department of the Universidade Estadual do Centro-Oeste of Paraná-UNICENTRO. The used design was of randomized blocks with five replications, in 3x2 factorial, being 3 traits of nitrogen coverage (control treatment, conventional urea and urea with urease inhibitor-NBPT), and 2 wheat cultivars (Mirante ® e BRS Pardela ®). There was significant difference between traits with nitrogen fertilizer for the assessed characteristics: Tillers number (NP), grains number for ears (GE), weight of a thousand grains (P1000) and grains yield (PROD). The results of this study allow to conclude that there was increase in the wheat grains yield when associated to the used coverage fertilizer with uerase inhibitor NBPT (200 kg ha-1-90 kg N), in face of the other evaluated treatments. The urea with urease inhibitor NBPT provided higher weight of a thousand grains when compared with conventional urea, being the result dependent of the evaluated cultivar.

Nitrogen fertilization in top dressing for wheat crop in succession to soybean under a no-till system

“…The estimated production of wheat in Brazil is around 6.0 million tons, with an average yield of 2.3 t•ha −1 (CONAB 2016). Because nitrogen is the nutrient absorbed and exported in the largest amount by the wheat crop, proper management of N fertilization has been one of the most important management practices to increase wheat grain yield and quality (Rossi et al 2013).…”

Productive performance and industrial quality of wheat genotypes grown in two environments

“…Despite the genetic differences of the genotypes, the variation in HW is also influenced by environmental factors such as N availability, number of grains per ear, number of tillers and rainfall during physiological maturation, among others (Rossi et al, 2013).…”

Canonical correlations between high and low heritability wheat traits via mixed models

“…Ciência Rural, v.53, n.2, 2023. can be used as an indirect criterion for the selection of genotypes with greater hectoliter weight, a trait that is considered a quality criterion by the industries, since it is associated with flour yield. Given the high influence of the environment on this trait (ROSSI et al, 2013), these results can be explained by the fact that plants with a lower cycle are less susceptible to the incidence of biotic and abiotic stresses.…”