Record Details

Altitude, temperature, and N Management effects on yield and yield components of contrasting lowland rice cultivars

CGSpace

View Archive Info
 
 
Field Value
 
Title Altitude, temperature, and N Management effects on yield and yield components of contrasting lowland rice cultivars
 
Creator Stuerz, S.
Chuma, B.A.
Cotter, M.
Kalisa, A.
Rajaona, A.
Senthilkumar, Kalimuthu
Vincent, I.
Asch, F.
 
Subject rice
altitude
yield component
research
 
Description Nitrogen (N) is one of the main nutrients that drive rice grain yield and is intensely managed especially in lowlands under irrigated conditions. A set of experiments was conducted in mid‐ and high‐altitude sites in Rwanda to investigate the response of five genotypes under different sowing dates and different N management. Genotype grain yields were higher and more stable at mid‐altitude across sowing dates. N rates strongly affected grain yield at mid‐altitude (p < .0001), but not at high altitude. Postponing basal N had positive effects on yield and yield components in both sites, with more pronounced effects at high altitude. Increasing N rate beyond 120 kg/ha led to a decrease in percentage of panicles per tiller and spikelet fertility and a decrease in grain yield due to excessive tillers at both high altitude and mid‐altitude. Thus, basal N application should be recommended at high altitude and the increase in N rate up to 120 kg/ha at mid‐altitude. A strict observation of recommended planting date should be followed at high altitude, and the use of cold‐tolerant genotypes is encouraged.
 
Date 2020-08
2020-08-27T17:04:14Z
2020-08-27T17:04:14Z
 
Type Journal Article
 
Identifier Chuma BA, Cotter M, Kalisa A, et al. (2020) Altitude, temperature, and N-Management effects on yield and yield components of contrasting lowland rice cultivars. J Agro Crop Sci. 206:456–465
1439-037X
https://hdl.handle.net/10568/109081
https://doi.org/10.1111/jac.12420
 
Language en
 
Rights CC-BY-NC-4.0
Open Access
 
Publisher Wiley
 
Source Journal of Agronomy and Crop Science