Agronomic characteristics of barley cultivars in response to nitrogen fertilization

Lanes Beatriz Acosta Jaques, Ivan Ricardo Carvalho, Henrique Eguilhor Rodrigues, Ítala Thaisa Padilha Dubal, Ruddy Alvaro Veliz Escalera, João Roberto Pimentel, Cristian Troyjack, Vinícius Jardel Szareski, Francine Lautenchleger, André Luiz Radünz, Ana Carolina Sampaio Silva, Rafael Dal Bosco Ducatti, Tiago Aumonde Zanatta, Tiago Pedó
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Abstract

The aim of this study was to assess the impact of nitrogen doses on the yield of two barley cultivars, namely BRS Brau and BRS Cauê, cultivated in various growing environments in Southern Brazil. The research was conducted during the 2017 harvest season in Alegrete and Pelotas, RS, Brazil. A randomized block design with a factorial scheme of 2 x 2 x 4 (growing environments x barley cultivars x nitrogen doses) was employed, with four replications. Various parameters were evaluated, including plant height, number of tillers per plant, number of ears per square meter, number of seeds per plant, thousand seeds weight (TSW), and yield. The results indicated that the two barley cultivars responded differently to the growing environments and nitrogen doses. In Pelotas, BRS Brau exhibited superior performance in terms of plant height and TSW, while BRS Cauê showed a higher number of seeds per plant and seed yield. Furthermore, the combination of the Pelotas growing environment and a nitrogen dose of 200 kg ha-1 resulted in optimized growth and yield of barley seeds.
施氮对大麦品种农艺性状的影响
本研究的目的是评估氮剂量对巴西南部不同生长环境下种植的两种大麦品种BRS Brau和BRS Cauê产量的影响。该研究于2017年收获季节在巴西RS的Alegrete和Pelotas进行。采用随机区组设计,因子方案为2 × 2 × 4(生长环境×大麦品种×氮剂量),共4个重复。评估了各种参数,包括株高、每株分蘖数、每平方米穗数、每株种子数、千粒重(TSW)和产量。结果表明,两种大麦品种对生长环境和施氮量的响应不同。在Pelotas中,BRS Brau在株高和总重方面表现优异,而BRS Cauê在单株种子数和种子产量方面表现优异。另外,在200 kg hm -1施氮量的条件下,大麦种子的生长和产量得到了优化。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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