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(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

Inoculation and Nitrogen Fertilization Improve Nitrogen Soil Stock and Nutrition to Soybeans in Degraded Pastures with Sandy Soil

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Author(s):
dos Santos Cordeiro, Carlos Felipe [1] ; Lopes, Bruno Poloto [1] ; Batista, Guilherme Dias [1] ; Araujo, Fabio Fernando [1] ; Tiritan, Carlos Sergio [1] ; Echer, Fabio Rafael [1]
Total Authors: 6
Affiliation:
[1] Sao Paulo Western Univ, Dept Agron, Sao Paulo - Brazil
Total Affiliations: 1
Document type: Journal article
Source: Communications in Soil Science and Plant Analysis; v. 52, n. 12 FEB 2021.
Web of Science Citations: 0
Abstract

Sandy soil is typically poor in organic matter. When areas with sandy soil are used for pasture prior to soybean cultivation, the availability of nitrogen (N) for plants is limited even further. Our objective was to evaluate if inoculation combined with N fertilization increases N content in the soil and N supply to soybean plants in post-pasture and post-soybean areas. Four experiments were conducted in degraded post-pasture and post-soybean areas in a sandy soil (Rhodustult), between 2016 and 2018, in Brazil. Treatments used a combination of inoculant (zero, 4, 8 and 12 rates ha(-1)) and mineral N (0, 25, 50, and 100 kg ha(-1)) with four replicates. It was using the soybean cultivar TMG 7062 IPRO. The post-soybean area had higher N content in the soil than the post-pasture area; 33, 32, and 21% for total N, microbial biomass nitrogen (MBN), and inorganic nitrogen (IN), respectively. Soybean shoots from the post-soybean area also had greater accumulations of N (86 kg ha(-1) of N). Increased N fertilization linearly raised levels of N in the soil (total N, MBN, and IN). In both areas, the effect of inoculation was restricted by the increase of total N in the soil. Inoculation combined with moderate rates of N in soybeans (50 kg ha(-1)) increased levels of N in the soil and N supply to plants in post-pasture areas. In post-soybean areas, inoculation alone fulfilled the N soybean need. (AU)

FAPESP's process: 16/17232-0 - Nitrogen fertilization and inoculation of soybeans grown in direct seeding system in sandy soils
Grantee:Carlos Felipe dos Santos Cordeiro
Support Opportunities: Scholarships in Brazil - Scientific Initiation