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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.)

ix of trinexapac-ethyl and nitrogen application to reduce upland rice plant height and increase yiel

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Author(s):
Ferrari, Samuel [1] ; Polycarpo, Gustavo do Valle [1] ; Vargas, Pablo Forlan [2] ; Fernandes, Adalton Mazetti [3] ; Oliveira Cunha, Matheus Luis [4] ; Pagliari, Paulo [5]
Total Authors: 6
Affiliation:
[1] Sao Paulo State Univ Unesp, Coll Agr & Technol Sci, Dracena Rod Cmte Joao Ribeiro Barros, Dracena, SP - Brazil
[2] Sao Paulo State Univ Unesp, Campus Registro, Registro, SP - Brazil
[3] Sao Paulo State Univ Unesp, Trop Root & Starches Ctr, Botucatu, SP - Brazil
[4] Sao Paulo State Univ UNESP, Coll Agr & Vet Sci, Jaboticabal, SP - Brazil
[5] Univ Minnesota, Southwest Res & Outreach Ctr, Dept Soil Water & Climate, 23669, 130th St, Lamberton, MN 56152 - USA
Total Affiliations: 5
Document type: Journal article
Source: Plant Growth Regulation; v. 96, n. 1 NOV 2021.
Web of Science Citations: 0
Abstract

Techniques to increase grain production such as nitrogen fertilization and plant growth regulators are essential to enable and enhance rice yield. Therefore, our goal was to evaluate the effect of nitrogen fertilization and application of trinexapac-ethyl on vegetative and reproductive traits of upland rice. Experiments were established in Registro, Brasil during the 2011 and 2014 growing seasons and treatments tested consisted of N rates (0; 50; 100; 150; and 200 kg N ha(-1)) and timings of TE application: V-4, V-7, R-1 and control (without TE). Upland rice grain yield at N rates greater than 117 kg ha(-1) applied as topdress combined with TE application at V-7 will start to decrease grain yield. In addition, application of TE at V-7 combined with N rates equal to or close to 117 kg ha(-1) will lead to higher yields and shorter plants. The combination of N application at topdress combined with TE application at V-4 led to a linear increase in the number of grains per panicle of rice plants. Nitrogen topdressing was found to increase plant height in the absence to TE or when TE is sprayed at V-4 or R-1. In addition, nitrogen topdressing had a positive increase in the number of tillers, stems, panicles, and SPAD index in rice plants. (AU)

FAPESP's process: 11/20504-8 - Nitrogen management, growth regulator, season and sowing rate for rice cultivars in Vale do Ribeira, São Paulo State, Brazil
Grantee:Samuel Ferrari
Support Opportunities: Regular Research Grants