USO DE RESÍDUO ORGÂNICO DE SOJA COMO FONTE DE ADUBAÇÃO NA CULTURA DO PIMENTÃO
USO DE RESÍDUO ORGÂNICO DE SOJA COMO FONTE DE ADUBAÇÃO NA CULTURA DO PIMENTÃO
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DOI: https://doi.org/10.22533/at.ed.21825090914
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Palavras-chave: adubação alternativa, agricultura sustentável, aproveitamento de resíduos, cultivo hortícola
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Keywords: alternative fertilization, sustainable agriculture, waste utilization, horticultural cultivation, agricultural yield
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Abstract: This chapter analyzes the potential of residue derived from soybean processing as a sustainable fertilization alternative for sweet pepper (Capsicum annuum L.), a vegetable of great economic and nutritional importance in Brazil. The study is based on the premise that fertilization represents a significant portion of production costs and that the use of organic residues can reduce expenses and environmental impacts. The experiment was conducted in an open field in the municipality of Palmeira do Piauí (PI), in Yellow Latosol soil, using the Ikeda hybrid (thick skin), characterized by high hardiness and good adaptation to the hot climate of northeastern Brazil. The randomized block design included six soybean residue doses (0, 10, 20, 30, 40, and 50 t/ha) and four replications, totaling 24 plots. The evaluated variables included fruit diameter and length, number and average weight of fruits per plant, yield per plant, and overall productivity. Management followed standard practices of micro-sprinkler irrigation, manual weed control, and plant staking. The results showed a positive and significant effect of increasing soybean residue doses on all evaluated variables. Fruit diameter increased from 35 mm in the control to 44 mm at 50 t/ha; fruit length rose from 5.5 cm to 6.5 cm; the average number of fruits per plant increased from 8.5 to 16; and average fruit weight doubled from 110 g to 270 g. Consequently, productivity rose from 3.2 t/ha (without fertilization) to approximately 8 t/ha at the highest dose. These findings confirm that soybean residue is efficient as a natural fertilizer, enriching the soil and stimulating the vegetative and reproductive growth of sweet pepper. It is concluded that using this residue represents a viable and sustainable alternative for small and medium farmers, contributing to the circular economy and reducing dependence on mineral fertilizers.
- José Gil dos Anjos Neto
- Regiana dos Santos Moura
- Jordânia Medeiros Soares
- Rezanio Martins Carvalho
- João Carlos Rocha dos Anjos
- Risoneide de Cássia Zeferino Silva
- Luana Maria Alves da Silva
- Eudinete Ribeiro de Sousa
- Djavan Pinheiro Santos