Nitrogen management at sowing and topdressing with the time of supply in the main biotype of oats grown in southern Brazil

D. C. Reginatto, J. G. D. Silva, I. Carvalho, Francine Lautenchlegere, J. A. D. Rosa, C. L. Peter, Luana Henrichsen, M. S. Jung, N. Basso, C. V. Argenta, Leonardo Norbert, C. M. Babeski
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引用次数: 2

Abstract

Adjusting the nitrogen dose at sowing and topdressing with the time of application can improve nutrient management and increase oat productivity. The objective of the study is the most efficient and sustainable management of nitrogen use in the adjusted combination of nutrient dose at sowing and for topdressing with the moment of application on the productivity of biomass and oat grains, considering the main systems of cereal succession in southern Brazil.. The experiment was conducted in the years 2015, 2016 and 2017, in Augusto Pestana, RS, Brazil. The design was a randomized block with four replications, in a 4 x 4 factorial model, consisted of four doses of nitrogen at sowing time (0, 10, 30 and 60 kg ha-1), and topdressing dose by the total supplied of 70 and 100 kg ha-1 in succession system soybeans / oats and corn / oats, respectively, in the expectation of grain yield of 4000 kg ha-1, with the supply for topdressing considering four application times (0, 10, 30 and 60 days after emergence). The most efficient and sustainable management of nitrogen use for biomass and oat grains productivity occurs with the total supply of the covered nutrient around 30 days after emergence, regardless of the condition of the agricultural year and succession system.
巴西南部主要生物型燕麦的播期和追肥期氮素管理
随施肥期调整播肥和追肥施氮量,可以改善养分管理,提高燕麦产量。考虑到巴西南部谷物演替的主要系统,本研究的目的是在播种和追肥与施用时调整营养剂量组合,对生物量和燕麦籽粒生产力进行最有效和可持续的氮利用管理。该实验于2015年、2016年和2017年在巴西RS的奥古斯托佩斯塔纳进行。四复制的是一个随机区组设计,在一个4×4的阶乘模型中,由四个剂量的氮在播种时(0、10、30和60公斤农业,和表面处治提供的总剂量的70和100公斤是连续系统/燕麦和玉米/大豆燕麦,分别在粮食产量4000公斤的期望是,追施氮肥供应的考虑四个应用程序时间(0、10、30和60天之后出现)。无论农业年和演替系统的条件如何,在萌发后30天左右,对生物量和燕麦籽粒生产力的氮利用进行最有效和可持续的管理时,覆盖养分的总供应量达到了最高水平。
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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