Organic nitrogen optimization in greenhouse grown pepper

This study was performed to search and optimise ?Organic nitrogen nutrition? of California Wonder peppers grown in greenhouses. The experiment has been carried out by ? Organic growing procedures? during 2009 early spring greenhouse season in the Horticultural Department of the Cukurova University. The treatments were six different nitrogene doses originated from Pattrone trade name nitrogen source that contains 10.21 % organic N. Nitrogene doses used in the experiment were 0 kg, 5 kg, 10 kg, 15 kg, 20 kg, 25 kg for per 1000m2. Pepper cultivar used in the experiment was Flemonco F1 with red fruit colour in ripeness. Plant growth parameters, leaf and fruit mineral analises, fruit pomologic analises and yield have been investigated. At the completation of the experiment, fruit yields were 2.66, 2.78, 3.33, 4.34, 5.56 ve 5.41 kg/m2 respectively from the nitrogen doses 0 kg, 5 kg, 10 kg, 15 kg, 20 kg, 25 kg for per 1000m2, respectively. Plant growth parameters and fruit pomologial analises shown similar trends to the yield valıes in the application of the different nitrogen doses. At the end of the experiment, in order to grown California Wonder type red pepper in greenhouse in early spring growing period the optimal organic nitrogen dose was determinated as 20 kg/1000m2.