期刊
COMMUNICATIONS IN SOIL SCIENCE AND PLANT ANALYSIS
卷 50, 期 19, 页码 2429-2441出版社
TAYLOR & FRANCIS INC
DOI: 10.1080/00103624.2019.1667369
关键词
Triticum aestivum L; nitrogen sources; biological nitrogen fixation; urease inhibitor; nutrients removal
Alternative options to feed an ever-growing global population requires to be developed to supplement chemical fertilizer use. Nitrogen (N) is the chemical fertilizer most used for non-legume crops. Research showing the potential for management practices which supplement the use of N fertilizer is utmost important. This research was developed to investigate the potential use of Azospirillum brasilense to enhance micronutrient accumulation in wheat cropping systems; and, to assess the potential interactions between biological nitrogen fixation (BNF) and urease inhibitor N-(n-butyl) thiophosphoric triamide (NBPT). The objective was to evaluate the effect of N sources and doses associated with inoculation with A. brasilense, regarding micronutrients accumulation, and its influence on wheat grain yield in Savannah conditions. The study was carried out in a Rhodic Hapludox under no-tillage. The experimental design was a randomized complete block design with four replications arranged in a 2 x 5 x 2 factorial scheme: two N sources (urea and urea with NBPT), five N rates (0, 50, 100, 150 and 200 kg ha(-1)), with and without A. brasilense inoculation. N rates increased the uptake and removal of micronutrients. Urea with NBPT was not efficient in optimizing nitrogen fertilization. Inoculation with A. brasilense provided a higher accumulation of Cu, Fe, Mn and Zn in the straw and Mn and Zn in grains. The inoculation with A. brasilense associated with 140 kg ha(-1) of N provided increased wheat grain yield.
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