RESUMOA mamona é tida, pelo governo brasileiro, como a principal oleaginosa com vista à produção de biodiesel. Contudo, isto não aconteceu devido aos seus baixos patamares de rendimento, sobretudo na região nordeste onde é cultivada comumente sob sistema consorciado com culturas anuais como feijão-comum. Produtividades satisfatórias somente serão conseguidas através do conhecimento das reais exigências nutricionais das culturas participantes do sistema consorciado, ante o que se objetivou, neste trabalho, avaliar a nutrição e as características agronômicas das culturas de feijão-comum e mamona em consórcio submetidas a diferentes fontes e doses de zinco. Empregou-se o delineamento de blocos casualizados em esquema fatorial 2 x 5 + 4, com três repetições. Os tratamentos foram compostos de duas fontes de zinco (óxido de zinco = 15% de Zn e sulfato de zinco = 20% de Zn), combinadas com cinco doses de zinco (0,0; 1,0; 2,0; 4,0 e 8,0 kgha -1 de Zn no solo) em consórcio de feijão-comum e mamona, mais os tratamentos adicionais do sistema monocultivo de feijão e mamona, usando-se a dose de 4,0 kg ha -1 das referidas fontes. Os teores foliares de fósforo, cálcio, magnésio, manganês e zinco em plantas de feijão e de mamona produzidas em sistema consorciado, foram influenciados pela adubação com zinco com o emprego do sulfato de zinco atribuído à sua maior solubilidade, comparativamente ao óxido de zinco. A fertilização com 4,1 e 4,9 kg ha -1 de zinco via solo, propiciou maiores rendimentos de grãos de feijão e mamona em consórcio. O sistema de consorciamento feijão-comum e mamona foi mais eficiente que o monocultivo para as diferentes doses de zinco adicionadas via fertilizante.Palavras-chave: adubação, associação de culturas, micronutriente, Phaseolus vulgaris L., Ricinus communis L. Sources and doses of zinc on beans and castor beans nutrition and production under intercropping ABSTRACTThe castor oil is taken by the Brazilian government as the main oilseed for biodiesel production. However, this did not happen because of their low levels of income, especially in the Northeast region, Brazil, where it is commonly grown under intercropping system with annual crops such as common bean. Satisfactory yields only be achieved with real knowledge of nutrient requirements of crops intercropping system participants. Therefore, this study aimed to assess the nutritional and agronomic traits of crops common bean and castor intercropping under different sources of zinc rates. The experimental of randomized block in 2 x 5 + 4factorial in scheme design, with three replications. The treatments consisted of two sources of zinc (zinc oxide = 15% Zn and zinc sulfate = 20% Zn) combined with five rates of zinc (0.0; 1.0; 2.0; 4.0 and 8.0 kg ha -1 Zn in soil)intercropping in common bean and castor, plus additional treatments single system common bean and castor, using a rate of 4.0 kg ha -1 of said sources. It is concluded that fertilization with zinc influenced foliar the phosphorus, calcium, magnesium, manganese content and zinc in these c...
Lentil production has been increasing in Brazil, due to strong national and international demand. Despite the economic importance, few cultivars are available on the Brazilian market. The aim of this study was to evaluate 48 lentil inbred lines and one commercial cultivar (Silvina), based on morpho-agronomic traits and to identify genotypes which can be used in a plant breeding program. Twenty-one morpho-agronomic descriptors (nine qualitative and twelve quantitative) were used. The descriptors showed genetic variability among the genotypes. Clustering techniques using characterization data allowed to identify genetically divergent genotypes as well as identify superior genotypes in relation to agronomic traits: FLIP2010-8L and FLIP2010-12L (similarity group I), FLIP2010-99L, FLIP2010-20L and FLIP2010-106L (group II), FLIP90-25L and 6031 (group III), FLIP2007-16L (group IV) and the commercial cultivar Silvina (group V). We concluded that these genotypes have the potential to be used in lentil breeding programs.
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.
customersupport@researchsolutions.com
10624 S. Eastern Ave., Ste. A-614
Henderson, NV 89052, USA
This site is protected by reCAPTCHA and the Google Privacy Policy and Terms of Service apply.
Copyright © 2025 scite LLC. All rights reserved.
Made with 💙 for researchers
Part of the Research Solutions Family.