Apesar do aumento da demanda e da área cultivada com milho nos últimos anos, o rendimento da cultura ainda é baixo no Acre. O baixo aporte tecnológico nos cultivos e o uso reduzido de estratégias direcionadas ao manejo da fertilidade e conservação dos solos, além do elevado preço dos insumos, figuram dentre os principais fatores que contribuem para...
Forage grasses cultivation in production system with soybean and maize is an alternative to improve tropical weathered soils quality in Brazil. The aim of the study was to evaluate the effects in the production systems involving cultivation of Urochloa brizantha cv. Piatã, in monoculture or in succession with soybean and maize crops, on organic mat...
Water stress is among the most severe abiotic stress factors for maize production. The application of chitosan causes various responses in plants, as a function of its structure and concentration. Therefore, chemical modifications were proposed in this study to enhance the biological effects on plants. Hybrid maize plants with drought-contrasting c...
ABSTRACT - Tests were carried out to assess fumonisins production due to lepidopteran feeding on the ears of the hybrid DKB 390VTPRO (Cry1A105/Cry2Ab2) and in its non-Bt isogenic version. Maize ears were harvested and classified according to injury size, and fumonisin levels for each injury class were quantified. There were no significant differenc...
ABSTRACT - The CRISPR/Cas9 system is a gene editing method capable of accurately locating and altering a specific sequence of a genome. Currently, this technique stands out as a promising biotechnological tool for the improvement of different crops, overcoming the limitations of conventional breeding methods and accelerating the development of plan...
ABSTRACT - The interference caused by volunteer plants dispersed after harvest can cause economic losses to growers. This work aims to identify the competitive ability and the economic threshold level of maize hybrids in different densities of volunteer soybean. The experiment was carried out in the field, in a randomized blocks design, with one re...
O Projeto Sulco, que difunde a tecnologia de irrigação, por meio de sulco-camalhão, para a soja em ambientes tradicionais do arroz, no Rio Grande do Sul, também têm sido experimentado em lavouras-piloto de milho. Os resultados - técnicos e econômicos - mostram-se promissores.
A 6-year field monitoring study was designed to compare the presence of fall armyworm Spodoptera frugiperda (J. E. Smith), leaf injury, its parasitoids, 100 seed weight, and seed yield of Bt maize hybrids approved for commercialization in the Brazilian market. Field trials were planted in two municipalities, divided into two periods, from 2011 to 2...
Dissertação (mestrado) - Universidade Federal de Santa Catarina, Centro de Ciências Agrárias, Programa de Pós-Graduação em Recursos Genéticos Vegetais, Florianópolis, 2022. / A utilização de agroquímicos no tratamento de sementes, a inoculação de material biológico e a armazenagem são práticas do processo produtivo na agricultura. O surgimento de i...
Abstract: The succession of soybean/maize has been largely adopted. Storm damage and crop problems can lead to grain loss, generating maize ear fragments or even whole ears that remain in the soil and still display germination viability, resulting in the occurrence of volunteer plants. In this context, the present study aimed to evaluate the interf...
