In order to compare different mineral and organic fertilizers, source of nitrogen and phosphorus, trials were conducted in protected environment at Instituto Agronômico, in Campinas (SP), Brazil, from October to November, 2004 with rocket salad and at São João Farm, in Elias Fausto (SP), Brazil, from September 2004 to February 2005 with tomato. The treatments on the rocket salad trial were: four rate of N (0; 50; 100; 150 kg ha-1 N) and four rate of P (0; 100; 200; 300 kg ha-1 P2O5) using the fertilizers MAP; DAP; hoof and horns flour (HHF) and bones flour (BF) at sowing and side dressing. Two experiments were conducted with tomato. Four rates of N on side dressing were studied (0; 133; 266; 399 kg ha-1 N) applying ammonium nitrate (AN) and HHF without change the rate of P at planting time. In a second trial, four rate of P were applied at planting time (0; 250; 500; 750 kg ha-1 P2O5) using triple superphosphate (TS) and BF without change of N (AN) rate on side dressing. The fertilization with 75 kg ha-1 N and 300 kg ha-1 P2O5 using MAP + DAP at planting time and 75 kg ha-1 N HHF on side dressing was the best treatment for rocket salad production. The organic fertilization with HHF was more efficacious when applied at planting time. The result showed that HHF was a better source of N than AN for tomato production and fruit average weight. The TS was a better source of P than the BF for tomato production.
Eruca sativa; Lycopersicum esculentum; hoof and horns flour; bones flour; N fertilization; P fertilization
