Efeito da aplicação de produtos biológicos em pomares de laranja

Abstract

Citriculture is an agricultural activity of great importance in Brazil, being one of the main fruit crops in the country. Biological products have gained prominence in modern agriculture for promoting plant growth and controlling pests and diseases sustainably. This study evaluated the efficacy of biological products in a young orange orchard (4 months), analyzing plant height, stem diameter, number of shoots, number of rootstock shoots, and chlorophyll content; in addition to investigating their effects in an older orchard (18 years), focusing on pest and disease control. The experiment followed a completely randomized design (CRD) with 6 treatments and 5 replicates for each orchard. The means were statistically analyzed using Tukey's test at a 5% significance level. The presence of Estrelinha was observed in all treatments of the orchard, including all replicates of the control treatment. In the control, red mite (Tetranychus mexicanus) and spider mite (Tetranychus urticae) were also detected. Treatment T3 (Bacillus subtilis AGL14) recorded the largest stem diameter (16.65 mm) and plant height (81.30 cm). Treatment T5 (Trichoderma asperellum AGL01) was the most productive in new shoots, averaging 6.60 per plant, and treatment T2 (Burkholderia cepacia BRM32111) had the highest chlorophyll content (74.64).