Biomass utilization for controlled release fertilization

Date

4-2003

Degree

Bachelor of Science in Chemistry

College

College of Arts and Sciences (CAS)

Adviser/Committee Chair

Maxima E. Flavier

Abstract

HONEYLOU PELIÑA SAGPAO College of Agriculture- College of Arts and Sciences. University of the Philippines at Los Banos April 2003. "BIOMASS UTILIZATION FOR CONTROLLED-RELEASE FERTILIZATION".

Adviser: Dr. Maxima E. Flavier

The potential of charcoal-coir dust briquettes as a matrix for controlled-release fertilizer was investigated Charcoal and coir dust were mixed and briquetted using a manual briquettor. The briquettes were soaked in a complete fertilizer solution (14 NI-14' 14 P505 - 14 K:0) and the amount of nitrogen, phosphorous and potassium adsorbed were monitored for five days immediately after five days, the briquettes were then soaked in water re determine the rate of release of nutrients

The average amount of nitrogen, phosphorous and potassium adsorbed by the prepared briquettes were 0.73 % to 7.00 %, 2.00 % to 50 0 %, 0.05 % to 0.25 %, respectively The 1.1 proportion of briquette adsorbed the highest amount of nitrogen while pure coir dust and pure charcoal adsorbed the highest amount of phosphorous and potassium.

On the otherhand. the average amount of nitrogen, phosphorous and potassium released by the briquettes were 0.50 % to 3 00, 0.03 % to 0.20 %, 1.00 % to 4.00 %, respectively. The prepared briquettes released almost the same amounts of nitrogen and phosphorous while the I I proportion of briquette released the highest amount of potassium

The data were analyzed statistically using the Analysis of Variance (ANOVA) and Duncan's Multiple Range Test (DMRT) Results showed that variations in the adsorption rate of nitrogen and phosphorous were significant at 5 % level except for potassium since the data showed only minimal amount of potassium adsorbed. The rate of release of nutrients was also significant at 5 % level. However, Duncan's Multiple Range Test showed that only the rate of release and adsorption of phosphorous was significant at 5 % level

Language

English

Location

UPLB Main Library Special Collections Section (USCS)

Call Number

Thesis

Document Type

Thesis

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