Sérgio Roberto Martins

Crescimento e avaliação nutricional da alface cultivada em "NFT" com soluções nutritivas de origem química e orgânica

Considering that little information is available for lettuce seedlings production in fenolic foam, the nutritional status of lettuce transplants was evaluated. One mineral [Castellane & Araujo solution (C&A)] and three liquid biofertilizer solutions, complemented with or without micronutrients were evaluated. The C&A solution besides the nutrient content of the plant serve as basis to formulate organic solutions and nutritional evaluation of lettuce plantlets. A nutrient complementation of the organic solution with P, K, Cu and Mn is necessary. N additions over 7,14 mmolc.L-1 are beneficial under low phosphorus concentration. The good performance of organomineral solutions prove that the replacement of mineral solution for production of lettuce plantlets in fenolic foam is possible.