The Effect of Organic Fertilizer Algae Fertilizer (Spirulina powder) and Fish Fertilizer (Fish Compost) Used as an Alternative to Chemical Fertilizer on the Growth and Mineral Content of Yedikule (Lactuca sativa L. var. Longifolia) Lettuce Plant

Abstract

Our country's soils are quite poor in organic matter, excessive chemicals are used to enrich the soil; product balance is disrupted, soil productivity decreases. In the study, the amount of chemical fertilizer was reduced and the effects of alternative fertilizers (NPK-50, NPK-100, Fish, Algae Fertilizer) on the growth and mineral contents (N, P, K, Ca, Mg, Fe, Cu, Mn, Zn, B, Mo) were investigated. In Yedikule, compared to the control, N, P, K contents were (106.29; 5.36; 38.14) ppm in algae fertilizer and (101.36; 5.99; 31.43) ppm in fish fertilizer. Nitrogen, potassium were found to be high in algae fertilizer and phosphorus were found to be high in fish fertilizer and this was attributed to the fact that algae fertilizer is rich in nitrogen and fish fertilizer is rich in phosphorus. In Yedikule, compared to the control; (Ca, Mg, Fe, Cu, Mn, Zn, B, Mo) in algae fertilizer (11.79; 8.99; 217.5; 16.87; 16.87; 34.73; 0.41) ppm, in fish fertilizer (10.58; 8.80; 201.84; 16.41; 16.41; 30.69; 0.36) ppm. In Yedikule, the highest root-leaf dry matter was determined in algae fertilizer (29.60%, 8.72%) and fish fertilizer (28.35%, 7.85%) compared to control. The highest values ​​(root collar, root length, plant length) in Yedikule were (1.01, 14.01, 25.21) cm in algae fertilizer and (0.95, 10.51, 24.3) cm in fish fertilizer. While growth parameters differed in Yedikule compared to control; statistically significant differences were found in plant length only in fish and algae fertilizer (P<0.05). It was determined that algae-fish fertilizer positively affected plant development.