Lilian Christian Domingues de Souza

São Paulo State University, San Paulo, São Paulo, Brazil

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Publications (5)0.37 Total impact

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    ABSTRACT: The use of plant growth stimulants for increasing crop yield has recently called the attention of researchers, but some results have proved contradictory. For that reason, the objective of this study was to evaluate the effects of plant growth stimulant application on components and grains yield of two winter common bean cultivars under Brazilian savannah conditions. The experiment was conducted during the 2007 fall-winter season, at the Unesp experimental farm, Ilha Solteira campus, in Selvíria, Mato Grosso do Sul State, Brazil. The experimental design was randomized blocks, in a strips scheme, with four replications. The treatments consisted of a combination of five plant growth stimulant doses (0 L ha-1 0.5 L ha-1 1.0 L ha-1 1.5 L ha-1 and 2.0 L ha-1, composed of three vegetable hormones (kinetin, gibberellic acid, and indolbutyric acid), in two application periods: at the vegetative stage (V4) and at the reproductive stage (R5). Vegetative characteristics such as plant height, first pod insertion height, number of grains per pod, and weight of 100 grains were not affected by the product application. However, its application at the reproductive stage (R5) increased the number of grains per plant and grain yield of the Carioca Precoce and IAC Apuã bean cultivars. For that increase, 2 L ha-sup>1was the best plant growth stimulant dose.
    Pesquisa Agropecuária Tropical. 06/2011; 41(2):148-154.
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    ABSTRACT: Green manure and sowing date are two important factors that influence the productivity of cultivars. The objective of this study was to evaluate the production of biomass from different vegetation covers (millet, sorghum and Brachiaria brizantha) and the accumulation of nutrients and their effects on the bean cultivars (Pearl, IAC Tunã and Carioca Precoce) at different sowing dates (6/22 and 7/6). The experiment was conducted at the experimental area of the Universidade Estadual Paulista - Unesp, located in Selvíria, Mato Grosso do Sul State, in the 2006/2007 agricultural year. The randomized blocks design was used with four replications, and the evaluations of the coverage were: the biomass of fresh and dry matter and nutrients accumulated in plants; for the beans: cycle, final stand, number of pods/plant, number of seeds per pod, mass of 100 seeds, and productivity. It was observed that millet and sorghum showed higher productivity of fresh and dry mass, and accumulate greater quantity of nutrients in straw; the time most suitable for sowing was in June, and the late sowing of cv. Carioca Precoce did not affect their productivity, the use of Brachiaria brizantha straw in coverage provided better conditions for productivity in the bean no-tillage system.
    Acta Scientiarum Agronomy 06/2010; 32(2):309-315. · 0.37 Impact Factor
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    ABSTRACT: A adubação verde e a época de semeadura são dois importantes fatores que influenciam a produtividade das cultivares. O objetivo deste trabalho foi avaliar a produção de biomassa de diferentes coberturas vegetais (milheto, sorgo e Brachiaria brizantha), o acúmulo denutrientes e seus efeitos sobre as cultivares de feijão (Pérola, IAC Tunã e Carioca Precoce) em distintas épocas de semeadura (22/6 e 6/7). O experimento foi realizado na área experimental da Universidade Estadual Paulista – Unesp, localizada no município de Selvíria, Estado do Mato Grosso do Sul, no ano agrícola de 2006/2007. Utilizou-se o delineamento experimental em blocos casualizados, com quatro repetições, e as avaliações para a cobertura foram: a biomassa de matéria fresca e seca e os nutrientes acumulados nas plantas; para o feijão foram: ciclo, estande final, número de vagens/planta, número de sementes/vagem, massa de 100 sementes e produtividade. Observou-se que o milheto e o sorgo apresentaram maiores produtividades demassa fresca e seca, e acumularam maiores quantidades de nutrientes na palhada; a época mais adequada para semeadura foi em junho, e a semeadura tardia do cv. Carioca Precoce não afetou sua produtividade; o uso da palhada de Brachiaria brizantha em cobertura proporcionou melhores condições para a produtividade ao feijoeiro em sistema de plantio direto. Green manure and sowing date are two important factors that influence the productivity of cultivars. The objective of this study was toevaluate the production of biomass from different vegetation covers (millet, sorghum and Brachiaria brizantha) and the accumulation of nutrients and their effects on the bean cultivars (Pearl, IAC Tunã and Carioca Precoce) at different sowing dates (6/22 and 7/6). Theexperiment was conducted at the experimental area of the Universidade Estadual Paulista - Unesp, located in Selvíria, Mato Grosso do Sul State, in the 2006/2007 agricultural year. The randomized blocks design was used with four replications, and the evaluations of thecoverage were: the biomass of fresh and dry matter and nutrients accumulated in plants; for the beans: cycle, final stand, number of pods/plant, number of seeds per pod, mass of 100 seeds, and productivity. It was observed that millet and sorghum showed higherproductivity of fresh and dry mass, and accumulate greater quantity of nutrients in straw; the time most suitable for sowing was in June, and the late sowing of cv. Carioca Precoce did not affect their productivity, the use of Brachiaria brizantha straw in coverage provided better conditions for productivity in the bean no-tillage system.
    Acta Scientiarum : Agronomy. 01/2010;
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    Natália Arruda, Marco Eustáquio de Sá, Lilian Christian Domingues de Souza, Mariana Pina da Silva
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    ABSTRACT: This study aimed to evaluate the effect of calcium (Ca) and boron (B), applied to leaf spraying in two phases reproductive of soybeans to macronutrients and micronutrients on leaf and seeds of four varieties of soybeans. The study was conducted in the 2006/07 agricultural year at experimental area UNESP, Ilha Solteira, Campus located in Selvíria-MS county. The experimental design was a randomized block with 4 repetitions. Treatments were arranged in a factorial 4X5X2, and 4 varieties of soybeans (BRS MG68 Conquista, BRS 245 RR, BRS MG 705S RR and BRS Favorita RR), 5 doses of leaf fertilizer with calcium and boron (0, 0.5, 1.0, 1.5, 2.0 L/ha-1) in 2 phenological stadia (R1-Beginning of flowering and R3-end of flowering). Evaluations of nutritional contents followied the methodology reported by Bataglia et al. (1983). The content of macro and micro nutrients in the leaves and seeds were subjected to analysis of variance, compared with the averages by Tukey test to 5%. The uptake nutrients among cultivars are different so it tabe to leaf content.
    Revista de Biologia e Ciencias da Terra. 01/2009; 9(2):145-153.
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    ABSTRACT: The present work evaluated the effect of calcium (Ca) and boron (B), applied in leaf pulverization, in two reproductive phases of the soybean crops in their yield components. The work was developed in the agricultural year 2006/07 in the Satation of Faculdade de Agronomia, UNESP, Campus de Ilha Solteira, located in the Selvíria - MS, county in a Reed typic. The experimental design used was randomized blocks, with three repetitions. The treatments were disposed in a factorial 4X5X2, being four soybean cultivars, three transgenics and one conventional (BRS 245 RR, BRS MG 705S RR, BRS Favorita and Conquista), five dosis of mineral fertilizer of calcium and boron ( 8,0% Ca, 2,0% B), (0; 0.5; 1.0; 1.5; 2.0 L ha-1) in two stadia fenologics (R1 and R3). The application of product in the stadium R3 provided a larger productivity level, with increase of 15%. To cultivar BRS MG 705S RR it presented the best acting could be indicated for the cultivation in the area Selviria- MS.
    Revista de Biologia e Ciencias da Terra. 01/2008; 8(2):37-44.