Alternative management of arthropods in rice (Oryza sativa L.) in Sébaco, Matagalpa, Nicaragua
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Abstract
Rice (Oryza sativa L.) is the world’s fourth most important cereal crop, cultivated in 111 countries thanks to its high nutritional value. In Nicaragua, it is the third most economically important crop, generating $190.7 million annually. Producers are constantly seeking management alternatives to reduce losses caused by arthropod pests and increase their yields in response to constant national demand. This study aimed to evaluate arthropod control alternatives in rice cultivation in the municipality of San Isidro, Nicaragua. Between December 2023 and April 2024, six treatments were assessed across four plots. Each experimental plot covered 80 m2, encompassing a total trial area of 1,920 m2. Five applications were made between days 10 and 96, and the number of arthropods found in each treatment was then counted. We estimated the yield for each treatment and conducted an economic analysis. The data were log-transformed to adjust for normality, and analysis of variance and Tukey's test (p < 0.05) were then applied. The most effective arthropod pest control was achieved in T5 (chemical treatment), followed by T4 (Beauveria bassiana + Cinnamomum verum), in which the greatest arthropod population occurred during the crop’s developmental and reproductive phases. The highest yield was recorded in the aforementioned treatments, with chemical treatment providing the greatest benefit.
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