Climate change projections under different greenhouse gas emission scenarios and its effect on corn (Zea mays L.) water requirement in Isabela, Philippines

Date

6-2016

Degree

Bachelor of Science in Agricultural and Biosystems Engineering

Major Course

Major in Structures and Environment

College

College of Engineering and Agro-Industrial Technology (CEAT)

Adviser/Committee Chair

Ronaldo B. Saludes

Abstract

The study investigated the effect of climate change on crop water requirement of Corn (Zea mays L.) ni Cauayan city and Benito Soliven municipality in Isabela, Philippines. Temperature and rainfall projections under different Representative Concentration Pathways (RCP) emission scenarios were generated using MarkSim weather file generator. The projections were done for two time periods in the future (2010-2039 and 2040-2069) centered on decades 2020s and 2050s. The crop water requirement of corn was calculated using FAO CROPWAT 8.0. Simulation results showed maximum projected decrease of -4.46% and projected increase of 20.57% in rainfall. For Cauayan city, maximum increase for maximum temperature, and minimum temperature was 9.54% and 12.32%, respectively. For Benito Soliven, maximum projected increase in maximum temperature and minimum temperature were 9.51% and 12.40% respectively, at year 2050 and RCP 8.5. The maximum projected increase in crop water use (7.47%) occurred during the wet season at year 2050 and RCP is 8.5. Similarly, the highest calculated corn yield reduction of 4.1 % was also observed. Results suggest that high temperature and low rainfall increase crop water use and yield reduction.

Language

English

Location

UPLB College of Engineering and Agro-Industrial Technology (CEAT)

Call Number

LG 993.5 2016 A2 /R34

Document Type

Thesis

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