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This experiment was carried out in a field in Oratorios, Minas Gerais State, Brazil, to evaluate the effect of organic fertilization associated to mineral fertilization on the production of pepper. The experiment was arranged in the randomized block design, with four replications, in a 4 x 3 factorial scheme; four doses of organic fertilizer (0; 30; 60 and 90 t ha-1) three doses of mineral fertilization (0; 750 and 1500 kg ha-1 of the NPK 4-14-8 formulation applied to furrows at planting). Twenty-eight pepper seedlings, cultivar Magda, were distributed into each 14 m2 plot, at 1.0x0.5 m spacing. Nutrient contents were evaluated in the leaves at the beginning of flowering, production of total, commercial and non-commercial fruits were determined. Commercial fruits were classified based on the length and diameter, into extra, special and first class. The extra class accounted for most of the commercial fruit production. Fertilization with organic compost was efficient for pepper nutrition, increasing pepper yield. The mineral fertilizer had additional effect for fruit production. The highest yield of commercial fruits was estimated when associated 84.43 t ha-1 of composed organic with the highest dose of mineral fertilizer.

O aproveitamento do efluente de biodigestor em fertirrigação e a utilização do esterco de suínos seco como componente do substrato, ao mesmo tempo em que diminuiriam o custo de produção da cultura do pimentão, evitariam o descarte desses resíduos no meio ambiente. Neste trabalho se objetivou avaliar a produtividade e a qualidade de frutos de pimentão vermelho híbrido 'Margarita' adotando-se o delineamento experimental fatorial 4 x 3 em blocos casualizados, sendo 4 substratos (S1, S2, S3 e S4) e 3 soluções nutritivas: solução nutritiva mineral (SN1), solução nutritiva à base de efluente de biodigestor, complementada com fertilizantes minerais (SN2) e solução nutritiva à base de efluente de biodigestor (SN3). A utilização das diferentes misturas que originaram os respectivos substratos, pode ser recomendada com boas perspectivas de produção e qualidade de frutos, com exceção do S1, que mostrou ser inferior aos demais, em termos de qualidade de frutos. A substituição parcial de fertilizantes minerais pelo efluente de biodigestor à base de dejetos de suínos, não foi suficiente para proporcionar produtividade equivalente à adubação 100% mineral; entretanto, alcançou padrões de qualidade semelhantes e com boa produtividade. The use of biological reactor effluent in fertigation and use of dry swine waste as a component of the substrate, would lower the cost of production and prevent discarding residues in the environment. Based on that, the objective of this research was to evaluate both yield and quality of pepper fruits, adopting the factorial scheme 4 x 3 in randomized blocks, with 4 substrates (S1, S2, S3 e S4) and 3 nutrient solutions: mineral nutrient solution (SN1), nutrient solution as based on biological reactor effluent boosted with mineral fertilizers (SN2) and nutrient solution based on biological reactor effluent (SN3). The different mixtures that yielded different substrate could be recommended for both fruit and quality production perspectives, except substrate 1 (S1), which revealed inferior quality of fruits. The use of SN1 permitted greater weight of the fruits, thickness of the pulp and productivity. Partial substitution of fertilizers by biodigestor effluent of swine waste (SN2) was not sufficient to promote productivity equivalent to 100% mineral nutrient solution, however it reached mean index of productivity with standards of quality of fruits equivalent to the mineral solution (SN1). This supports the conclusion that the use of the biological reactor effluent would be an alternative in potential to reduce the cost of production of pepper crop and to prevent the discarding of this material, still rich in nutrients, into the environment.