Informations et ressources scientifiques
sur le développement des zones arides et semi-arides

Accueil du site → Master → Norvege → Irrigation water use and vegetable production efficiency assessment between sprinkler and drip irrigation systems at North Central Namibia (NCN) : (Study on three vegetable crops : tomato, cabbage, and pepper)

Hedmark University (2016)

Irrigation water use and vegetable production efficiency assessment between sprinkler and drip irrigation systems at North Central Namibia (NCN) : (Study on three vegetable crops : tomato, cabbage, and pepper)

Haidula, Simon

Titre : Irrigation water use and vegetable production efficiency assessment between sprinkler and drip irrigation systems at North Central Namibia (NCN) : (Study on three vegetable crops : tomato, cabbage, and pepper)

Auteur : Haidula, Simon

Université de soutenance : Hedmark University

Grade : Master in Sustainable Agriculture 2016

Résumé
Irrigated agriculture plays a major role in food security, producing nearly 40 percent (%) of food and agricultural commodities. It uses more than 80% of the water withdrawn from the earth’s rivers. This increased pressure to water as a valuable resource in agricultural food production which remains finite due to the competition of current and future events namely ; rapid increase in world population, climatic change, agricultural and industrial sector activities. In order to conserve and able to produce food continuously ; an efficient water use and crop yield improving agricultural practices need to be adapted and implemented. Therefore, this study is an assessment of the irrigation system efficiency based on water use and production efficiency between drip and sprinkler on three vegetable crops (cabbage, tomato, and pepper), grown at small-scale on North-central Namibia. The study assumes four hypothesis ; 1) production input costs, planted field size, types of fertilizer, stakeholder visits, and agricultural soil practices have positive effects on the production efficiency of both three crops under the two irrigation system, 2) Socio factors ; age and sex have no influence on production yield efficiency in both irrigation systems, 3) drip irrigation to use less water cost with fewer outputs and 4) irrigation systems and total water cost per ha expected to have an effect on the outputs. The study was contacted through data collection whereby small-scale farmers were interviewed using a structural questionnaire. Data were analyzed in R software, whereby three statistical linear regression model such as ; backward selection model, Akaike information criterion and interactions were used to measure the objectives. Among production inputs costs ; water and fertilizer were found to be important determinants, of production efficiency in all three vegetables under both two irrigation systems. Age of the farmer, stakeholder visit, and agricultural soil practices (only ; mulching) were found to have positive effects only on tomato and cabbage production efficiency under drip irrigation. The relationship between water use and irrigation systems was not significant, neither crop yield difference was not observed between drip and sprinkler irrigation systems. However, the statistical findings contradict the findings based on opinions and observations of farmers on crop yield and water use ; which concluded that drip is more efficient relative to sprinkler irrigation. Together these results highlighted no clear difference between drip and sprinkler on water use and irrigation production efficiency on North-central Namibia, however, if proper agricultural water conservation practices and inputs subsidies are implemented among drip irrigation farmers, an efficiency difference between the two irrigation systems will be seen

Mots clés : sprinkler, drip, water use and vegetable production efficiency

Présentation

Version intégrale (1,90 Mb)

Page publiée le 11 février 2018