Growth, Yield, and Economics of Okra and Amaranth Production Under Irrigation

Small-scale vegetable growers need investment and cost guidelines for irrigation systems in order to evaluate the economics and profitability of growing crops with irrigation. Growth, yield, and economics of producing okra and amaranth under four irrigation methods—basin, drip, furrow, and sprinkler—were evaluated. The experiment was conducted at the Teaching and Research Farm at Obafemi Awolowo University, Ile-Ife, Nigeria, on a sandy loam soil during the dry season. Plant heights and leaf area index were measured at different stages of plant growth; yield was measured at maturity. Fixed and variable costs of all the methods were estimated using results from field experiments and data collected from 50 farms, as well as from the State Agricultural Development Authority. Economic analyses of crop growth under the four methods were carried out. Results indicated that plants receiving drip and sprinkler irrigation had significantly higher yield than furrow and basin for both amaranth (Amaranthus cruentus L....