Soil Moisture Stress and Nitrogen Supply Affect the Growth Characteristics and Yield of Upland Rice Cultivars
Journal Title: International Journal of Plant & Soil Science - Year 2017, Vol 15, Issue 5
Abstract
Aims: To assess the effect of soil moisture stress and nitrogen fertilizer application on the growth characteristics and yield of upland rice cultivars. Study Design: Completely randomized design in a factorial arrangement. Place and Duration of Study: National Crops Resources Research Institute, Namulonge, Uganda between March and July 2015. Methodology: The experiment comprised four nitrogen (N) application levels (0 as control, 40, 80 and 120 kg N/ha) as main plots and four soil moisture levels (25% as control, 15, 10 and 5%) as sub-plots. Results: Plant heights for stressful moisture levels (15, 10 and 5%) at all N levels were lower (P < .001) than those of the control treatments at the respective N levels. Also, rice plants under stressful treatments at each N level took longer (P < .001) to mature when compared with the control treatments at the respective N levels. Subjecting rice plants that were supplied with 0 kg N/ha to moisture stress did not significantly (P > .05) affect the number of panicles produced when compared with the control. Under the 40 kg N/ha level, number of panicles produced by rice plants subjected to 15 and 10% moisture stress levels (3.56 and 4.00) were significantly lower than those of the control (6.00). For the 80 and 120 kg N/ha levels, number of panicles decreased significantly at all moisture stress levels when compared with the respective control treatments. Subjecting rice plants to moisture stress at the 40, 80 and 120 kg N/ha levels significantly (P < .001) reduced the grain yield when compared with the respective control treatments. Conclusion: Namche-3 rice cultivar performed optimally when subjected to 15% moisture stress and 120 kg N/ha application rate. Thus, farmers growing Namche-3 rice in areas with limited soil moisture may apply N at 120 kg/ha if they are to realize better grain yields.
Authors and Affiliations
Emmanuel P. Momolu, Jimmy Lamo, Sylvester Katuromunda
Keywords
Related Articles
- EP ID EP316834
- DOI 10.9734/IJPSS/2017/30318
- Views 122
- Downloads 0
Influence of Organic Manure on Phosphorus and Potassium Fractions in Soil Planted with Soybean
Field experiments were carried out on the Research Farm of the Federal University of Agriculture Abeokuta, (FUNAAB), Ogun State, Nigeria to determine the effects of poultry manure (PM) on soil P and K fractions and nutri...
Yield and Yield Components of Winter Cotton (Gossypium hirsutum L.) Genotypes Influenced by Plant Spacings
Field experiment was conducted to study the influence of plant spacings on the seed cotton yield and yield components in cotton during winter 2016–2017 at Tamil Nadu Agricultural University, Coimbatore, Tamil Nadu, India...
Lessons from Long-term Nutrient Management Adoptions in Semi-arid Tropical Alfisol
Understanding the consequences of adoption of long-term nutrient managements on the fluctuation of soil biological variables is of greater importance in relation to nutrient supplying capacity of the ecosystem and crop r...
Effect of Legume Integration and Phosphorus Use on Maize N and P Concentration and Grain Yield in Kabete - Kenya
Aims: Investigate effect of legume integration and phosphorus application on nitrogen (N) and phosphorous (P) concentration and yield of maize. Place and Duration of Study: The study was carried out in Kabete Field Stati...
Assessment of Handling Sorghum (Sorghum bicolor L. Moench) Grains in Production Areas
A postharvest handling farm survey was conducted on sorghum (Sorghum bicolor L. Moench) grains as an alternative staple crop adapted in arid and semi-arid lands. The objective of the study was to determine postharvest ha...