Soybean yield response to Bradyrhizobium strains inoculation in fields with inoculation history in Southern Brazil

被引：12

作者：

Ambrosini, Vitor G. ^{[1
]}

Fontoura, Sandra M. V. ^{[2
]}

de Moraes, Renato P. ^{[2
]}

Tamagno, Santiago ^{[3
]}

Ciampitti, Ignacio A. ^{[3
]}

Bayer, Cimelio ^{[1
]}

机构：

[1] Univ Fed Rio Grande do Sul, Dept Solos, Programa Posgrad Ciencia Solo, Porto Alegre, RS, Brazil

[2] Fundacao Agr Pesquisa Agr, Colonia Vitoria Entre Rios, Guarapuava, Parana, Brazil

[3] Kansas State Univ, Throckmorton Plant Sci Ctr, Dept Agron, Manhattan, KS 66506 USA

来源：

JOURNAL OF PLANT NUTRITION | 2019年 / 42卷 / 16期

关键词：

seed inoculation; solid inoculant; liquid inoculant; nodulation; rhizobium; biological nitrogen fixation; seed yield; N-15; NATURAL-ABUNDANCE; N-2; FIXATION; NITROGEN-FIXATION; POPULATION; NODULATION; LEGUMES; SOIL;

D O I：

10.1080/01904167.2019.1648680

中图分类号：

Q94 [植物学];

学科分类号：

071001 ;

摘要：

Soybean [Glycine max (L.) Merr.] responses to seed inoculation with rhizobium are inconsistent in sites with inoculation history. Field trials were conducted in South-central region of Parana State (Southern Brazil) aiming to evaluate yield response to inoculation in areas with history of inoculation at a regional-scale (21 trials, 1999/2000 to 2014/2015), and identify nodulation, plant dry weight and nitrogen (N) components underpinning yield formation (10 trials, 2015/2016 and 2016/2017). Seed yield varied from 1853 to 5352 kg ha(-1) (first dataset), characterizing a wide range of environmental conditions across seasons. Response to inoculation was inconsistent at regional-scale, with a similar seed yield of inoculated (3286 kg ha(-1)) and non-inoculated (3298 kg ha(-1)) soybean. Lack of differences were also observed in all the variables analyzed of second dataset. Research efforts should be applied aiming to identify rhizobia persistence in the soil and its efficacy at N fixation after continuous cropping without inoculation.

引用

页码：1941 / 1951

页数：11

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