Field performance of a liquid formulation of Azospirillum brasilense on dryland wheat productivity
Field performance of a liquid formulation of Azospirillum brasilense on dryland wheat productivity
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DOI：
10.1016/j.ejsobi.2008.07.001
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发表时间：
2009-01-01
影响因子：
4.2
通讯作者：
Virginia Fernandez-Canigia, Maria
中科院分区：
文献类型：
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作者：
Diaz-Zorita, Martin;Virginia Fernandez-Canigia, Maria
接种巴西固氮螺菌对作物产量的有利影响已被广泛描述，但在典型农业田间环境中广泛使用的文献很少。本研究旨在量化小麦(Triticum aestiuum L.)在典型的旱地耕作条件下，用含有巴西固氮螺菌INTA Az-39菌株的液体制剂接种其种子。这项研究是在2002-2006年的生长季节进行的，在阿根廷潘帕斯地区的297个试验点评估了接种和未接种的种子。接种的作物营养生长旺盛，地上部和根部干物质积累量均较高(分别为12.9%和22.0%)。接种后收获粒数增加6.1%，籽粒产量增加260 kg ha(-1)，增产8.0%。在大约70%的地点确定了积极的反应，主要取决于可获得的产量，与施肥和其他作物和土壤管理措施无关。总体而言，在没有主要作物生长限制的情况下，观察到对接种的反应更多，这表明巴西固氮螺菌处理对更高效地发展高产小麦具有互补作用。(C)2008年爱思唯尔·马森公司。版权所有。
The beneficial effects of inoculating with Azospirillum brasilense on crop productivity have been widely described, but extensive use in typical agricultural field environments is scarcely documented. The objective of this study was to quantify the productivity of wheat (Triticum aestiuum L.) whose seed was inoculated with a liquid formulation containing Azospirillum brasilense INTA Az-39 strain under typical dryland farming conditions. The study was performed in the 2002-2006 growing seasons, evaluating inoculated and noninoculated seed at 297 experimental locations in the Pampas region of Argentina. The inoculated crops exhibited more vigorous vegetative growth, with both greater shoot and root dry matter accumulation (12.9 and 22.0%, respectively). The inoculation increased the number of harvested grains by 6.1%, and grain yield by 260 kg ha(-1) (8.0%). Positive responses were determined in about 70% of the sites, depending mostly on the attainable yield and independently of fertilization and other crop and soil management practices. In general, more response to inoculation was observed in the absence of major crop growth limitations, suggesting the complementary contribution of the Azospirillum brasilense treatment to more efficiently developing higher yielding wheat. (C) 2008 Elsevier Masson SAS. All rights reserved.