Biological Nitrogen Fixation in Beans (Phaseolus vulgaris) as Affected by Organic Residue Application Grown in some Selected Soils of La Trinidad, Benguet

Abstract

The study was conducted at the green house of the Horticulture Research and Training Institute (HORTI), Benguet State University at Balili, La Trinidad, Benguet from November 2014 to February 2015. The study aimed to determine the effects of different organic residues and different soil types their interaction on Biological Nitrogen Fixation in beans. At flowering stage the organic residue gave highly significant effects on the formation of root nodules, dry matter production and nitrogen uptake while the nitrogen content of the plant tissue was not significantly affected. At harvest, the organic residue gave highly significant effects on the height of the plant and in total pod produced. However, the marketable and non- marketable yield was not significantly affected. The wild sunflower residue enhanced and improved the biological nitrogen fixation in bush beans. At flowering stage the different soil types gave highly significant effects on root nodules production, dry matter yield, nitrogen content of plant tissue and the nitrogen uptake. At harvest, Biological Nitrogen Fixation in Beans (Phaseolus vulgaris) as Affected by Organic Residue Application Grown in some Select Soils of La Trinidad, Benguet/ Seprida A. Halog soil type gave highly significant effects on the height of plant, total pod yield and non- marketable pod yield. While the marketable pod yield was not significantly affected. La Trinidad and Puguis gravelly loam enhanced and improved the biological nitrogen fixation. At flowering stage the interaction of the organic residue and soil type gave highly significant effect on the root nodule formation, dry matter production and N- uptake. At harvest, the interaction of the organic residue and soil type gave highly significant effects on plant height and total pod yield. The interaction effect of wild sunflower residue and La Trinidad loam enhanced and improved the biological nitrogen fixation.