Author : Marthen Robinson Pellokila
This study aimed to: (1) determine the effects of changes in groundwater level on cost of water from shallow tube well irrigation; (2) assess the welfare changes (producer surplus) in rice production due to the changes in groundwater levels; (3) determine the effects of socioeconomic factors and changes in welfare in terms of producer surplus due to the changes in the level of groundwater table on food and nutrition security at the farmers' household level; and (4) suggest policy recommendations for tube well irrigation utilization based on the derived economic value of groundwater recharge and how it affects food and nutrition security at the rice farmers' household level. Following what Almeira did in 2000, the amounts of water extraction for groundwater table at 6 and 7 meters were estimated using farmers data by applying pump discharge capacity information from well log data provided by NIA. The cost of water extraction was computed by dividing the total volume of water extracted for ground water table at 6 and 7 meters with the total operation and maintenance costs of groundwater extraction. There was a significant decrease in the volume of groundwater extraction for groundwater table at 6 and 7 meters. On the other hand, there was significant increase in the unit cost of water extraction for groundwater table at 6 and 7 meters.
Subject:
agricultural economics rice farming households
Material : theses
Publisher : University of the Philippines Los Baños (UPLB),
Publication Date : 2002
PR-T
2002
D - AgEc 28
SEARCA Library
TD