Due to the water balance in the Brazilian Cerrado, it is not necessary to cultivate arugula in a rainfed system. Together with the lack of research on with this crop, it is necessary to study the response of genotypes to irrigation in this biome. Thus, the objective of this study was to determine the optimal irrigation depth and to identify the best arugula genotypes. Three arugula genotypes were field-tested during two cycles under the effect of four irrigation depths based on crop evapotranspiration. The parameters evaluated were root depth, SPAD index, number of plants and leaves per plant, plant diameter, fresh shoot mass and water use efficiency. The arugula presented the same demand for irrigation in the two cycles, and the genotypes and/or irrigation depths affected the evaluated parameters. The results support that the Folha Larga variety should be preferred by Brazilian Cerrado producers and irrigated with 90% replacement of crop evapotranspiration.
In radish production, the choice of proper genotypes and irrigation regime is of great importance to achieve success. In light of this, the current study aimed to evaluate the agronomic performance of a few radish genotypes under different irrigation strategies. The plants were grown in the city of Unaí-MG, in Brazil, under field conditions, and during two cycles, one of 40 days (from February 28 to April 8, 2015) and other of 51 days (from May 9 to June 28, 2015). The experimental design was a randomized block design in a split-plot arrangement with four replications. The treatments consisted of four irrigation strategies (50, 75, 100, and 125% of crop evapotranspiration-ETc) applied by a dripping irrigation system, while subplots consisted of three radish cultivars (Comet, Saxa, and Crimson Giant). We evaluated the following parameters: root system depth, leaf chlorophyll content, shoot fresh matter, diameter and length of tuberous root, number, and mass of commercial and non-commercial tuberous roots, and water use efficiency. All the radish genotypes showed no differences for agronomic characteristics. Under Brazilian Cerrado conditions, the most suitable irrigation strategy for radish crops is 100% of ETc.
O presente artigo tem como objeto de discussão o combate e a prevenção ao crime organizado transnacional por agências especializadas, na região de fronteira entre o Brasil e o Paraguai, mais especificamente na linha de municípios lindeiros, entre as cidades de Foz do Iguaçu e Guaíra, no Paraná, e suas principais vias de acesso, incluindo as rodovias federais. Nesse sentido, buscou-se analisar a contribuição das Unidades Especializadas da Polícia Militar (Batalhão de Polícia de Fronteira) e da Polícia Rodoviária Federal (Núcleo de Operações Especiais), procurando responder em que medida essas agências têm sido efetivas nesse combate. Considerou-se como índice de efetividade dessas agências as prisões e apreensões, resultados das ações de prevenção e repressão, em especial armas, drogas e cigarro, por serem os mais expressivos, conforme dados estatísticos. O recorte temporal será o período de 5 anos – 2016 a 2020 – para análise do fenômeno.
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