Impact de l’irrigation des cultures maraichères par les eaux piscicoles dans la région de Biskra.

Abstract

Saving water and its rational management in crop irrigation have become an important issue to ensure the sustainability of agriculture in arid and semi-arid regions, particularly with the effects of climate change on these regions. This work was carried out at the level of the Technical Institute for the Development of Saharan Agronomy (ITDAS); its objective is to study the impact of the use of water from fish farming in the irrigation of vegetable crops. (Potatoes and peppers in greenhouses) under salinity conditions (soil and irrigation water), in this experiment we compared the effect of water from fish farming on the plants and the soil with that of drilling water, the parameters studied are the height of the plants, the fruit yield and the physic-chemical characteristics of the soil. The results obtained showed that the use of fish water in irrigation can improve the vegetative growth of cultivated plants and their fruit yields, in addition it can exert a beneficial effect on the soil by increasing the rate of organic matter, the rate of total nitrogen and it can also lower the pH of the soil. The value that this practice can add to agriculture is the reuse of this waste water in irrigation which is considered as an unconventional water source and at the same time the reduction of the use of synthetic fertilizers in the crop management.