Biological Nitrogen Fixation in Garden Pea (Pisum sativum) as Affected by Organic Residue Application Grown in Selected Soils of La Trinidad, Benguet

Abstract

The study was conducted at the green house of the Horticultural Research and Training Institute of Benguet State University, from November 2014 to February 2015. Soil and plant analysis were done at the laboratories of the Department of Soil Science, Department of Chemistry, and University Plant Health Clinic of Benguet State University from March 5 to April 10, 2015. The study aimed to determine the effects of the soil types and kind of organic residues and their interaction on biological nitrogen fixation in garden pea. There were two determining factors considered in the study, these were the soil types specifically La Trinidad loam, Puguis gravelly loam and Tacdian clay loam and organic residues such as alder leaves and wild sunflower. Based from the results, the soil type best suited for biological nitrogen fixation in garden pea was Tacdian clay loam. For the second factor, the application of organic residue was not needed in the biological nitrogen fixation in garden pea. And the best treatment combination that enhanced biological nitrogen fixation of garden pea was La Trinidad loam without organic residue.