RESUMOObjetivou-se investigar a eficiência de fertilizantes na cultura da alface em sistema orgânico, nas condições edafoclimáticas da região de Campo Grande, MS. As cultivares Verônica e Regina foram pulverizadas, aos 10 e 20 dias do transplante, com os fertilizantes orgânicos: Biofertilizante enriquecido (supermagro) a 1% e 3%, EM5 (produto comercial) a 0,1%; Microgeo (produto comercial) 3%, Extrato Pirolenhoso 0,2% e testemunha. Constatou-se que os produtos testados como fertilizantes nas cvs Verônica e Regina, não alteraram os valores de massa fresca, massa seca (%), teor de umidade nas cultivares avaliadas em relação à testemunha.Palavras-chave: Lactuca sativa L.; agricultura sustentável; biofertilizantes. ABSTRACTThis work aimed to evaluate the efficiency fertilizers on lettuce crop grown with organic system at environmental local conditions. The cultivars Verônica and Regina were sprayed at 10 and 20 days after planting, with organic biofertilizers: 1 and 3% enriched biofertilizer (supermagro); 0,1% EM5; 3% Microgeo; 0,2% pirolenhoso extract, and control (lettuce without application of any product). Fresh weight, dry matter (%) and moisture did not show difference among all treatments for the assayed cultivars.
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