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 120
- Downloads 0
Isolation and Molecular Identification of Colletotrichum gloeosporioides from Infected Peanut Seeds
Peanut (Arachis hypogaea (L) cv. Margenta) seeds are currently, significantly considered as an important source of protein and vegetable oil. Anthracnose caused by Colletotrichum gloeosporioides is a fungal disease from...
Anti-Alternaria solani Activity of Onion (Allium cepa), Ginger (Zingiber officinale) and Garlic (Allium sativum) In vitro
Plant pathogens cause serious losses in quantity and quality of agricultural products. Use of fungicides is gradually becoming unpopular due to their negative effects on ecosystems, human and animal health, and due to re...
The Influence of Nitrogen and Phosphorus on Vegetative Growth, Yield Components and Yield of Watermelon
Two field experiments were undertaken to evaluate the effects of nitrogen and phosphorus on vegetative growth, yield components and yield of watermelon. The treatments were five levels of nitrogen (0, 50, 100, 150 and 20...
Mechanical Strengths, Hydraulic Conductance and Growth of Passiflora edulis f. edulis Grafted on Five Different Rootstocks at Three Different Cleft Lengths and Their Susceptibility to Wind Damage in Nakuru Kenya
This study was carried out to determine the relationship between graft union mechanical strengths, hydraulic conductance and plant growth of Passiflora edulis f. edulis grafted on different rootstocks and cleft lengths a...
Mitigation of the Effect of Crude Oil Polluted Soil on the Growth and Development of Cassava-Manihot esculenta Crantz with Organic and Inorganic Amendments
NPK and compost of Centrosema pubescens were studied at the University of Port Harcourt Botanic garden for their effect on the growth components of Manihot esculenta, Crantz (NR 8082) in a crude oil polluted soil. The so...