Effect of Soil Moisture Stress Duration on the Growth Characteristics and Yield of Rice Cultivars
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Date
2016
Journal Title
Journal ISSN
Volume Title
Publisher
Journal of Agriculture and Environmental Sciences
Abstract
Soil moisture stress is a major constraint to the productivity of rice under rain-fed conditions. A study was
conducted to establish the effect of moisture stress duration on the growth characteristics and grain yields of
rice cultivars, namely Namche-1, Namche-3 and Agoro. Rice plants were subjected to moisture stress at
tillering and a thesis in the screen house. Moisture stress at tillering stage caused significant leaf rolling in
Agoro than in Namche-3, but at a thesis Agoro was the least (P≤0.05) affected. Moisture stress at tillering and
a thesis significantly reduced the number of tillers in Agoro, but not in Namche cultivars. The growth period
of Agoro was significantly longer than that of the control when it was stressed at tillering for 15 days, but
stressing Agoro at a thesis didn’t affect its maturity period. Stressing Namche cultivars at tillering and a thesis
increased (P≤0.05) their maturity periods, though these periods were shorter (P≤0.05) than that of Agoro.
Grain yields for all the cultivars at tillering and a thesis decreased as the stress period was prolonged. Grain
yields of Namche cultivars were higher (P≤0.05) than that of Agoro. Therefore, the growing of Namche
cultivars in areas with insufficient moisture for rice production would be appropriate.
Description
Keywords
Cultivar, Growth stages, Soil moisture stress, Rice cultivars, Yield components
Citation
Katuromunda, S., Lamo, J., & Momolu, E. P. (2016). Effect of Soil Moisture Stress Duration on the Growth Characteristics and Yield of Rice Cultivars. Journal of Agriculture and Environmental Sciences. https://doi.org/10.15640/jaes.v5n2a9