Beneficial Microorganisms Affect Soil Microbiological Activity and Corn Yield under Deficit Irrigation

Author:

Araujo Josinaldo Lopes1ORCID,de Mesquita Alves Jackson2,Rocha Railene Hérica Carlos1,Santos José Zilton Lopes3,dos Santos Barbosa Rodolfo1,da Costa Francisco Marcelo Nascimento1,de Lima Geovani Soares1ORCID,de Freitas Leandro Nunes1,Lima Adriana Silva1,Nogueira Antonio Elizeneudo Peixoto1,da Silva André Alisson Rodrigues1ORCID,dos Santos Leônidas Canuto4ORCID,Bezerra Neto Francisco5,da Silva Sá Francisco Vaniés6ORCID

Affiliation:

1. Department of Agricultural Sciences, Federal University of Campina Grande, Pombal 58840-000, PB, Brazil

2. Department of Soil Science, Federal University of Viçosa, Viçosa 36570-900, MG, Brazil

3. Faculty of Agricultural Science, University of Amazonas, Manaus 69067-005, AM, Brazil

4. Department of Soil Science, Federal University of Lavras, Lavras 37200-900, MG, Brazil

5. Agricultural Sciences Center, Federal Rural University of Semi-Arid, Mossoró 59625-900, RN, Brazil

6. Agricultural Sciences Center, State University of Paraíba, Catolé do Rocha 58884-000, PB, Brazil

Abstract

Water scarcity is one of the main factors that decrease the growth and productivity of corn, since it negatively affects gas exchange and the general metabolism of the crop. The use of beneficial microorganisms (BM) has been considered a potential attenuator of water stress. This study aimed to evaluate the effect of BM and water deficit on growth, gas exchange, grain yield, and soil microbial activity. A field experiment was carried out, in which the treatments were composed of a 2 × 4 factorial scheme, corresponding to two irrigation levels (100% of ETc and 50% of ETc) and to four treatments (T) referring to the soil inoculation with BM (C: control; T1: Bacillus amyloliquefaciens + Azospirillum brasiliense; T2: B. subtilis; and T3: A. brasiliense). The evaluations were carried out in the flowering phase (plant growth, gas exchange, and foliar nitrogen content) and at the end of the plant cycle (grains yield, mineral nitrogen, and microbiological activity). The 50% reduction in irrigation depth severely restricted corn growth and gas exchange and decreased the grain yield by 38%. The water deficit increased the protein content in the grains and the concentration of mineral nitrogen in the soil when the plants were inoculated with BM. Under water stress, inoculation with BM increased corn productivity by 35% and increased soil microbial activity. The inoculation of plants with BM, either in combination (Bacillus amyloliquefaciens + A. brasiliense) or alone (B. subtilis), attenuated the adverse effects of water deficit in maize.

Publisher

MDPI AG

Subject

Plant Science,Agronomy and Crop Science,Food Science

Cited by 2 articles. 订阅此论文施引文献 订阅此论文施引文献,注册后可以免费订阅5篇论文的施引文献,订阅后可以查看论文全部施引文献

同舟云学术

1.学者识别学者识别

2.学术分析学术分析

3.人才评估人才评估

"同舟云学术"是以全球学者为主线,采集、加工和组织学术论文而形成的新型学术文献查询和分析系统,可以对全球学者进行文献检索和人才价值评估。用户可以通过关注某些学科领域的顶尖人物而持续追踪该领域的学科进展和研究前沿。经过近期的数据扩容,当前同舟云学术共收录了国内外主流学术期刊6万余种,收集的期刊论文及会议论文总量共计约1.5亿篇,并以每天添加12000余篇中外论文的速度递增。我们也可以为用户提供个性化、定制化的学者数据。欢迎来电咨询!咨询电话:010-8811{复制后删除}0370

www.globalauthorid.com

TOP

Copyright © 2019-2024 北京同舟云网络信息技术有限公司
京公网安备11010802033243号  京ICP备18003416号-3