Effect of nutrition of fish farm effluent on basil and purslane production

In this research, the effect of irrigation with fish farm effluent on the growth characteristics of basil and purslane was investigated. This experiment was conducted in a randomized complete block design with three irrigation water treatment (1-river water, 2- fish farm effluent water and 3- the mixture of 50% river water and 50% fish farm water (V/V)) and three replications on two valuable medicinal plants (basil and purslane) in Shoush (Khuzestan province). The results showed that irrigation treatment with fish farm effluent had a significant effect on increasing of measured traits, especially fresh and dry weight of shoot and root, and the uptake of nitrogen, phosphorus, and potassium and even in mixed treatment of river and fish farm effluent water, also showed a significant increase in morphological traits compared to river water treatment. The amount of nitrogen uptake by irrigation with fish pool water was 407.77% and 482.2%, respectively, in basil and purslane. According to the results, the edible portion of these vegetables including leaves and shoots increased by irrigation by the fish farm effluent and without any supplementary fertilizer. Because the pool water was rich in nutrients that could supply the plant's growing needs, therefore, it is advisable to use the fish pool effluent to grow basil and purslane and for other leafy vegetables more research is needed.