Comparative Evaluation of Four Indigenous Rice Cultivars as Influenced by Ethylene Gas in Jammiri Village in Bali Local Government Bali, Taraba State Nigeria
Abstract
Rice (Oryza sativa) is a fundamental food that provides the essential food requirements for more than 60% of the global population. Increasing food production becomes not only necessary but compulsory to be able to feed the geometric increase of human population. One of the models to do that is to improve the nitrogen use efficiency. This will enable nitrogen fertilizer to remain as ammonium which is positively charged and stays bonded to soil surface. This will preventing it from leaching out rhizosphere, polluting the underground water and the atmosphere However, rice production is associated with low nitrogen use efficiency as a result of leaching and denitrification. Ethylene plays important roles in root elongation, partial disease resistance, and inhibition of nitrification, grain filling, regulating root structure, increasing water use efficiency and triggering growth in rice. Ethylene gas plays an important role in most stages of plant growth the objective of the study was to compare the concentration of ethylene gas produced by each of the variety under investigation. Three experiments were set up in Nayinawa Group Farm. The first experiment was to find out if rice varieties differ in their ethylene production. The second experiment was to find out if among the varieties, one would produce ethylene gas that would inhibit the conversion of ammonium into nitrate. The third was to find out if ethylene produced would vary with soil type. The result showed that rice cultivars varied in ethylene production (P> 0.01). The result showed the ethylene production by different rice cultivars varied with soil type (P< 0.01). Key words: ethylene gas, rhizosphere, oxidation ammonium, rice.
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