Castor has emerged as an oilseed species capable of meeting the demand of the Brazilian market.Thus, there is a need for studies to evaluate the different growing conditions that this species can be cultivated in order to subsidize their production. The study aimed to evaluate the influence of different growing conditions on agronomic performance of seven castor bean cultivars grown in Savanna-Pantanal ecotone region. The trial was conducted at Universidade Estadual de Mato Grosso do Sul, Aquidauana Campus. Treatments consisted of seven castor bean cultivars (BRS Energia, IAC-2028, IAC-Guarani, BRS Nordestina, BRS Paraguaçu, IAC-80 and IAC-226) and three growing conditions (with weed control and without topdress nitrogen; with topdress nitrogen at 80 kg ha -1 and with weed control; without weed control and absence of topdress nitrogen) in two agricultural years (2011 and 2012), arranged in randomized block design with three replications in factorial arrangement (7 x 3 x 2). The following variables were evaluated: plant height, stem diameter, number of bunches, number of fruits and fruit yield. The cultivars BRS Energia, IAC 2028, IAC Guarani and BRS Paraguaçu obtained greater fruit yield. Topdress nitrogen and weed control provided to cultivars the highest stem diameter, number of bunches, number of fruits and fruit yield.

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Under the hypothesis of distinction and characterization of promising genotypes in the genetic improvement of castor, the aim of this work was to evaluate the agronomic performance, phenotypic adaptability and genetic divergence between castor genotypes grown in the Cerrado-Pantanal ecotone. The experiment was conducted in 2010/2011 and 2011/2012 in the experimental area of the State University of Mato Grosso do Sul -UEMS. The treatments consisted of seven castor genotypes (BRS Energia, IAC 2028, IAC-Guarani, BRS Nordestina, BRS Paraguaçu, IAC-80 and IAC-226) arranged in a randomized block design with three replications. The following agronomic characters were assessed: plant height, stem diameter, number of fruits and productivity. Data were subjected to individual and combined analysis of variance, and means were compared by the Skott-Knott test. Phenotypic stability was estimated with productivity data by the Lins and Binns method. Genetic divergence between the genotypes studied was determined by the methods of Ward's and Tocher's, using the Mahalanobis's distance as dissimilarity measure. The BRS Energia genotype showed higher productivity and phenotypic adaptability. The crossing of the BRS Energia and BRS Paraguaçu genotypes can produce a hybrid with high heterosis effect and, consequently, of high productivity. (BRS Energia, IAC-2028, IAC-Guarani, BRS Nordestina, BRS Paraguaçu, IAC-80 e IAC-226) RESUMO: Sob a hipótese de distinção e caracterização de genótipos promissores no melhoramento genético da mamona, objetivou-se, com este trabalho, avaliar o desempenho agronômico, adaptabilidade fenotípica e divergência genética entre genótipos de mamona cultivados no ecótono Cerrado-Pantanal. O experimento foi conduzido nos anos de 2010/2011 e 2011/2012 na área experimental da Universidade Estadual de Mato Grosso do Sul. Os tratamentos consistiram de sete genótipos

RESUMOO objetivo do presente trabalho foi avaliar cultivares de alface em diferentes tipos de coberturas no solo em dois cultivos. O trabalho foi desenvolvido na escola Estadual Coronel Jose Alves Ribeiro (CEJAR), localizada no município de Aquidauana/MS. O delineamento experimental foi em blocos casualizados em esquema fatorial 3 x 2, sendo três tipos de coberturas de solo (palhada de milho, capim braquiária e mulching) e duas cultivares de alface (Ariel e Solaris) com quatro repetições. Realizou-se o cultivo sucessivo, onde o primeiro cultivo foi realizado 110 dias após o plantio da cobertura morta. Sete dias após a colheita do primeiro cultivo, realizou-se o transplantio de mudas do segundo cultivo. Avaliou-se à altura e diâmetro de plantas, número de folhas, comprimento de hastes, massa da matéria fresca e massa seca. Para os cultivos, houve diferença significativa, onde os melhores resultados foram no segundo cultivo. Foi possível observar interação significativa entre os tipos de coberturas e as cultivares de alface para o diâmetro de plantas. Para altura de plantas foi possível observar diferença significativa entre os cultivos. A utilização dos diferentes tipos de coberturas de solo teve efeitos benéficos no desenvolvimento das plantas de alface e por isso são indicadas.