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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.)

Corn shoot and grain nutrient uptake affected by silicon application combined with Azospirillum brasilense inoculation and nitrogen rates

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Galindo, Fernando Shintate [1] ; Pagliari, Paulo Humberto [2] ; Buzetti, Salatier [1] ; Rodrigues, Willian Lima [1] ; Fernandes, Guilherme Carlos [1] ; Biagini, Antonio Leonardo Campos [1] ; Marega, Evelyn Maria Rocha [1] ; Tavanti, Renan Francisco Rimoldi [1] ; Jalal, Arshad [1] ; Teixeira Filho, Marcelo Carvalho Minhoto [1]
Total Authors: 10
[1] Sao Paulo State Univ, Dept Plant Hlth Rural Engn & Soils, Ilha Solteira, SP - Brazil
[2] Univ Minnesota, Southwest Res & Outreach Ctr, Dept Soil Water & Climate, Lamberton, MN - USA
Total Affiliations: 2
Document type: Journal article
Source: JOURNAL OF PLANT NUTRITION; v. 45, n. 2, p. 168-184, NOV 15 2021.
Web of Science Citations: 1

This study was developed to investigate if Ca and Mg silicate application as Si source combined with inoculation with Azospirillum brasilense and N rates can affect corn nutrient uptake. The study was set up in a Rhodic Hapludox under no-till system, located in Selviria, state of Mato Grosso do Sul, Brazil. Treatments included: (i) two seed inoculation (with and without A. brasilense); (ii) two soil amendment sources (Ca and Mg silicate as Si source and dolomitic limestone); and (iii) five N application rates applied as side-dress (0 to 200 kg ha(-1)). Increasing N rates positively influenced corn nutrition with increased nutrient and Si uptake in shoot and grain. The average nutrient uptake in descending order was K > N > Ca > Si > Mg > S > P >Fe > Mn > Zn > Cu > B for shoot and N > K > P > S > Mg > Ca > Si> Fe > Zn > Mn > B > Cu for grain. Calcium and Mg silicate application positively influenced corn nutrition with greater shoot P, K, Ca, S, and B uptake and grain Ca uptake. Inoculation with A. brasilense was found to increase nutrient uptake with greater shoot N, K, Ca, B, and Si and grain Cu uptake. Grain N and S increased by 22.5 and 26.8% when plants were inoculated and 200 kg N ha(-1) was applied and grain Zn increased by 88.6, 65.7, and 99% when plants were inoculated and 50, 150, and 200 kg N ha(-1) were applied, respectively. Therefore, studies conducted under tropical conditions are needed to better understand the role of Si combined with PGPB inoculation under different N management and their effects on plant nutrition and cereal development aiming at improving nutrient replenishment. (AU)

FAPESP's process: 17/06002-6 - Inoculation with Azospirillum brasilense associated with the use of silicon and nitrogen doses in corn and wheat crops
Grantee:Fernando Shintate Galindo
Support type: Scholarships in Brazil - Doctorate