Effect of Composted Rice Residues and NPK on Yield and Yield Components of Lentil Grown in Sandy Soil

Two field trials were conducted using lentil (Lens culinaris L.) variety Giza 370 at Research and Productions station, National Research Centre, Alemam Malek village, Al Nubaria district, Al Behaira Governorate, Egypt in 2008/09 and 2009/10 winter seasons. The experimental treatments were 100% recommended dose of organic fertilizer in the form of composted rice residues (4 ton/fed.). , 75 % rec. organic fertilizer + 25% NPK (3 ton/fed. + NPK 5:8:6). ,50 % rec. organic fertilizer + 50% NPK (2 ton/fed.+ NPK 10:16:12). ,25 % rec. dose of organic fertilizer + 75% NPK (1 ton/fed. + NPK 15:24:18). and 100 % rec. NPK (NPK 20:32:24). Results indicated significant differences between treatments in all studied characters. Treatment of organic fertilizer recorded the best results and NPK 20:32:24 came the second in yield and all yield attributes, it is identically ranged from 93% in number of capsules/plant to 98.5% in seed index from the best treatment.