Summary of Manejo integrado do gorgulho-aquático na cultura do arroz - Dia de Campo na TV

00:00:00 - 00:05:00

The video discusses the challenges posed by the aquatic weevil in rice crops and the various management techniques that can be used to minimize its damage. The weevil, which primarily affects the root system of rice plants, is one of the most damaging pests in Brazil, reducing productivity by 10-18%. Integrated pest management and the use of resistant cultivars, such as the BRS Atalanta, are highlighted as effective methods for controlling the weevil population. Although chemical control is still widely used, there is a shift towards more rational insect control methods that reduce the use of insecticides and offer environmental and economic benefits. Efforts are also being made to reduce the dose of insecticides used in seed treatment. Additionally, the management of irrigation water and the topography of the terrain can contribute to reducing pest infestation in rice crops. Overall, integrated pest management is crucial for cleaner and more cost-effective rice production with minimal environmental impact.

• 00:00:00 In this section, the video discusses the aquatic weevil, a pest that affects rice crops. The adult insect is capable of destroying germinated rice seedlings, but the main concern for producers is the larvae, known as root maggots, which cause significant damage to the plants' root system. The adult insect lays eggs on partially submerged leaves, and the larvae attach to the roots, growing for about 35-40 days before transforming into pupae. The new adult emerges from the pupa and hibernates in grasslands and other substrates, causing infestations in the next crop. This pest is one of the most damaging to rice production in Brazil, reducing productivity by 10-18%. The video also mentions various management techniques, including integrated pest management and the use of resistant cultivars, to minimize the potential damage caused by the pest.
• 00:05:00 In this section, the speaker discusses the use of genetic resistance and the BRS Atalanta cultivar to control the aquatic weevil in rice crops. The cultivar has shown resistance to root pests, which can lead to a decrease in the insect population over time. The research on cultivar resistance is part of a genetic improvement program aimed at developing materials with reduced chemical control needs. However, currently, chemical control is still widely used to prevent damage from root pests, especially in the western region of Rio Grande do Sul. Some producers have been implementing more rational insect control methods, reducing the use of insecticides in their crops. The speaker believes that this type of management will become widespread in the future, as it offers both environmental and economic benefits. Embrapa, in partnership with the Pelotas branch, has been working on reducing the dose of insecticides used in seed treatment, which has proven to be effective in reducing costs and minimizing environmental impact. The management of irrigation water and the topography of the terrain also play a role in reducing pest infestation in rice crops. Overall, integrated pest management is crucial for rationalizing chemical inputs and achieving cleaner and more cost-effective grain production, with less environmental impact.