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 106
- Downloads 0
Response of Caryedon serratus (Oliver) (Bruchidae: Coleoptera) towards Various Botanicals and Hosts
Studies on repellence effect of few botanicals on Caryedon serratus (Olivier) in stored groundnut were carried out at Department of Entomology, College of Agriculture, Junagadh Agricultural University, Junagadh during th...
Alterations Induced by Cowpea Weevil Callosobruhus maculatus F. (Coleoptera: Chrysomelidae) Infestation on Seed Germination Potential and Nutrient Quality of Vigna aconitifolia (Jacq.)
Aims: To evaluate alterations induced by cowpea weevil Callosobruhus maculatus (C. maculatus) infestation on seed germination potential and nutrient quality of Vigna aconitifolia (V. aconitifolia). Experimental Design:...
Root Development at Different Growth Stages of Wheat and Barley Cultivars Grown in Tubes under Field Environmental Conditions
This work was conducted to investigate root length and biomass developments at three different growth stages of GS 31 (stem elongation), GS 69 (complete of anthesis) and GS 92 (full grain maturity) of two cultivars for e...
Effect of Cowdung, NPK and Rhizobium Inocula on Growth and Soil Status of Summer Mungbean (Vigna radiata) in Acid Soil
This research was carried out to evaluate the effect of cowdung, NPK and Rhizobium inocula on growth and soil status of summer mungbean (Vigna radiata) on acid soil of Khadim Nagar, Sylhet, Bangladesh. Seven treatments;...
Study on Root Characteristics of Sugarcane (Saccharum officinarum) Genotypes for Moisture Stress
The size and distribution of root system of Sugarcane genotypes in response to moisture stress during formative stage at Agricultural Research Station, Basanthpur, Medak, Telanagana was found significant. Deeper root sys...