BRS Catiana is an irrigated rice cultivar with a medium cycle and excellent grain quality, suited for cultivation in 17 Brazilian states. It has a high yield potential (15,535 kg ha-1) and a mean yield of 7,253 kg ha-1 , wide adaptation and late senescence (stay green trait).
The early-maturing irrigated rice cultivar BRS A702 CL was developed by Embrapa in partnership with BASF for the Clearfield Production System of irrigated rice in the tropical region of Brazil. In the states of Tocantins and Roraima, BRS A702 CL produces a mean yield of 7,650 kg ha -1 .
Cultivation of soybean and off-season corn is advancing in areas under restricted edaphoclimatic conditions, such as petric plinthosols, which have significant proportions of gravel and are deficiency in micro-nutrients such as copper (Cu) and zinc (Zn). The effects of Cu and Zn concentrations on soybean nutrition cultivated in petric plinthosol are unclear, and it is unknown whether the levels considered adequate for other soils are sufficient for gravely soils, or even if higher Cu and Zn rates can cause a toxic effect in soybean. The objective was to compare the response of soybean grown in petric plinthosol and ferralsol to Cu and Zn doses for identifying the changes induced by gravel soils and to evaluate the residual effect on off-season corn grown in ferralsol. Four experiments were carried out with Cu and Zn doses applied to soil with the soybean crop in ferralsol and plinthosol. The leaf tissues of soybean crops in the two soils showed the same rate of increase in Zn concentrations, for each kg·ha-1 of Zn applied, the increase in Zn was 0.7 mg·kg-1, suggesting no difference in the effect of Zn fertilization between soils with and without gravel. The dosages of Zn and Cu Oxysulfate applied to soil did not cause residual effects in the off-season corn. The highest doses of Cu and Zn did not have any toxic effects on the plants. The main criteria for interpreting Cu and Zn in soil analysis are thus also applicable to soybean crops grown in petric plinthosol.
BRS A501 CL is the first upland rice cultivar with tolerance to the broad-spectrum herbicide Kifix®. It has a medium-length cycle, high stability of whole grain yield at processing, good disease tolerance and a high grain yield.
O objetivo deste trabalho foi avaliar a macrofauna edáfica em plintossolos com cultivos agrícolas no município de Paraíso do Tocantins, região central do Estado do Tocantins, Brasil. Para as coletas foram utilizadas armadilhas de queda (Pitfall) com coletas semanais no período de abril a junho do ano de 2022. Para o estudo, foram selecionadas quatro áreas: Área 1 – Nativa, caracterizada pela vegetação de cerrado; Área 2 - cultivada com milho e próxima a Área 1; Área 3 – cultivada com milho e afastada (± 03 Km) da Área 1; Área 4 – cultivada com sorgo e ligada na Área 3. Para caracterização da macrofauna utilizou-se um padrão dedistribuição, considerando-se os índices de ocorrência (IO) e de dominância (ID) das espécies, agrupadas porOrdem, como indicador da frequência e da ocorrência da quantidade de indivíduos coletados. Um total de4.879 indivíduos foram coletados e agrupados em 5 Classes e 12 Ordens: Anura (Classe Anfíbia), Araneae(Classe Aracnida), Blattodea, Coleoptera, Dermaptera, Diptera, Hemiptera, Hymenoptera, Lepidoptera eOrtoptera (Classe Insecta), Polydesmida (Classe Diplopoda) e Pulmonata (Classe Gastropoda). As ordensColeoptera (besouros), Ortoptera (grilos), Dermaptera (tesourinhas) e Diptera (moscas) apresentaram maiorabundância e foram classificadas na categoria de ordem comum nos cultivos de milho e sorgo. Na área deambiente natural constituída por um fragmento de cerrado as Ordens comuns foram Coleoptera (besouros),Hymenoptera (formigas) e Araneae (aranhas). No presente estudo foi possível conhecer parte da macrofaunaedáfica presente em plintossolos pétricos em ambiente nativo e com cultivos agrícolas. As informações geradas contribuem para o conhecimento e compreensão do importante papel destes organismos em sistemas agrícolas de produção.
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.