Evaluation of soil nitrogen of experimental ricefields irrigated with meat processing wastewater effluents

Date

5-1987

Degree

Bachelor of Science in Chemistry

College

College of Arts and Sciences (CAS)

Adviser/Committee Chair

Nieva T. Librojo

Abstract

Pascual, Ma. Ederlinda Caparas, College of Arts and Sciences, University of the Philippines at Los Banos, May, 1987. Evaluation of Soil Nitrogen of Experimental Ricefields Irrigated with Meat Processing Wastewater Effluents.

Adviser: Dr. Nieva T. Librojo

Soil samples from uncropped rice paddy irrigated with Republic Flour Mills (RFM) wastewater and National Irrigation Authority (NIA) water in Cabuyao, Laguna were collected and analyzed for nitrate-nitrogen, nitrite-nitrogen, total Kjeldahl nitrogen, organic matter and pH. Samples were collected six times.

The data obtained for the five parameters showed no significant differences as a whole in correlating fertilized (F) RFM vs (F) NIA; unfertilized (NF) RFM vs (NF) NIA; RFM (F) vs RFM (NF); and NIA (F) vs NIA (NF) plots with regard to per collection and total basis.

Soil pH values ranged from 6.72-6.99 for RFM-F plots; 6.80-6.98 for RFM-NF; 6.72-7.03 for NIA-F; and 6.78-7.05 for NIA-NF. Distinct amount of organic matter, total Kjeldahl nitrogen and nitrite-nitrogen were observed. Very low values of nitrate-nitrogen were found which could be attributed to the denitrification reaction brought about by high values of organic matter of the soil and also to ammonia volatilization.

The results obtained in the present study suggest that RFM wastewater can be used as an alternative source of irrigation water for agricultural lands in Cabuyao, Laguna.

Language

English

Location

UPLB Main Library Special Collections Section (USCS)

Call Number

LG 993.5 1987 C4 P39

Document Type

Thesis

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