Irrigation and crop diversification in the 25 de Setembro irrigation scheme, Mozambique

Effect of deficit irrigation on crop growth, yield and quality of onion in subsurface drip irrigation

Indiahas the largest area under onion (Allium cepa) crop but its average productivity (14.21 t ha-1) is considerably lower than the world’s average of 19.4 t ha-1. Besides low productivity, irrigation efficiencies are also very low i.e. 30-35% in India. Managing onion crop with less than adequate irrigation water availability is a challenge in several parts of the country. Options of i) deficit...

Algerian Irrigation in Transition; Effects on Irrigation Profitability in Irrigation Schemes: The Case of the East Mitidja Scheme

In Algeria, liberalization reforms undertaken since the 1990s have resulted in negative effects on the development and management of irrigation schemes, as well as on the conditions of farmers. Reforms have been undertaken to improve the performance of irrigation schemes, such as the national plan of agricultural development (PNDA) in 2000 and the water pricing policy of 2005. However, after im...

Crop Irrigation Scheduling via Simulation-Based Experimentation

Intraseasonal water allocation to a single crop has been studied extensively. Previous studies have emphasized the need to coordinate irrigation scheduling with several factors including economic and physical constraints, amount of soil moisture available at the time of irrigations, growth stage of the plant, interactive effects from previous and/or subsequent irrigation, and the effect, timing...

Studies in Swarm Intelligence Techniques for Annual Crop Planning Problem in a New Irrigation Scheme

Annual crop planning (ACP) is an NP-Hard type optimisation problem in agricultural planning. It involves finding optimal solutions for the seasonal allocations of a limited amount of agricultural land among the various competing crops that need to be grown on it. This study investigates the effectiveness of employing three relatively new Swarm Intelligence (SI) techniques in determining solutio...

G93-1154 Crop Residue and Irrigation Water Management