Impact de l'irrigation par les eaux usées épurées sur la productivité d'une culture d'haricot vert de plein champ, le bilan d'azote et la salinité du sol
Our trial was carried out at the pilot station of Drarga. Two water regimes were adopted, and a plant density of 105000 plants/ha. The results of our trial show that: Water use of French bean crop is 200 mm and the low content of major nutrients in treated waters caused a reduction in most of them in the soil. The 120% ETM regime affects less crop growth, plant height, fresh weight, yield and discarded product. The high electrical conductivity of irrigation water caused an increase in the soil electrical conductivity. Nitrogen balance of the crop showed that under the 100% ETM, nitrogen uptake by French bean was 74 kg/ha of nitrogen, the supply was of 49 kg/ha of nitrates and 2.8 kg/ha of ammonium, and this caused a decrease in the soil of 102 kg/ha of nitrates and 4 kg/ha of ammonium.
