Oluwagbayide, S.D and Adenigba, A.A (2022) CROP COEFFICIENTS AND WATER REQUIREMENT OF ONE YEAR OLD JATROPHA CURCAS L. IN ILARO, SUB-HUMID REGION OF NIGERIA. In: 3rd International Conference, 16th & 17th August 2022, The Federal Polytechnic Ilaro.
![[img]](http://eprints.federalpolyilaro.edu.ng/style/images/fileicons/text.png) |
Text
CROP WATER COEFFICIENT.pdf Download (834kB) |
Abstract
managing the irrigation of any crop. This study aimed at determining the crop evapotranspiration and crop coefficient of Jatropha at its various developmental stages. This research was carried out in Agricultural Research Farm of Federal Polytechnic, Ilaro between June 2019 and February 2020 by appraising two different irrigation treatments consisting of drip irrigation and no irrigation (rainfed). The ETc was determined with a drainage lysimeter made from cylindrical drum of circular cross-sectional area 5003.6 cm2 , diameter 70.0 cm and depth 130.0 cm. The lysimeter was filled with undisturbed sandy-loam soil and a Jatropha was grown in it. The grass-reference evapotranspiration (ET0) was estimated using the Penman�Monteith equation from the climatic data obtained from a nearby weather station. The values of KC were computed as the ratio between the ETC and ET0 for the irrigated treatments. The results show that, average values of ETC ranged from 1.4 to 5.6mmday−1 for drip irrigation and from 1.1 to 5.3mmday−1 for no irrigation. Average crop coefficient (KC) values determined for Jatropha in drip irrigation at different four growth stages were 0.5, 0.9, 1.2 and 0.7; while in no irrigation (rainfed), 0.4, 1.0, 1.1 and 0.6 were obtained for the initial, development, mid-season and late season growth stages respectively. The highest KC values of 1.2 and 1.1 were obtained at mid-season (from late November to mid-December), during the season, for the drip irrigation and no irrigation treatments, respectively.
| Item Type: | Conference or Workshop Item (Paper) |
|---|---|
| Uncontrolled Keywords: | Jatropha curcas, Drainage lysimeter, Crop coefficient, Irrigation schedule and Crop evapotranspiration. |
| Subjects: | S Agriculture > S Agriculture (General) |
| Divisions: | Faculty of Engineering, Science and Mathematics > School of Engineering Sciences |
| Depositing User: | Joy Oluwabukola Olayiwola |
| Date Deposited: | 13 Mar 2023 21:42 |
| Last Modified: | 13 Mar 2023 21:42 |
| URI: | http://eprints.federalpolyilaro.edu.ng/id/eprint/2160 |
Actions (login required)
 |
View Item |
