Denizart Bolonhezi

Modos de aplicação de regulador vegetal no algodoeiro, cultivar IAC-22, em diferentes densidades populacionais e níveis de nitrogênio em cobertura

ABSTRACT TYPES OF GROWTH REGULATOR APPLICATION, PLANTING DENSITIES ANDNITROGEN LEVELS FOR THE COTTON CULTIVAR IAC 22. The present work was developed during the growing seasons of 1996/97, 1997/98, 1998/99 and1999/00 at Ribeirao Preto, Tiete, Guaira, Campinas and Ilha Solteira, State of Sao Paulo, Brazil. Theexperimental design was the completely casualized blocks, using the factorial arrangement with twelvetreatments (3 x 2 x 2) and four replications. The objective of this work was to study plant density (6; 10and 14 plants/m); nitrogen levels at broadcasting (40 and 60 kg.ha -1 of N/ha) and types of growthregulator application (single application at flowering or splitting in four times, since the thinning). Thesplit application conduced to lower height of plants and greater weight of bolls when compared to thesingle application of the growth regulator. The application of the highest level of N, increased theleaves nitrogen content in and cotton yield, and reduced the lint percentage. increasing plant densityfrom 6 to 10 and 14 plants/m, reduced lint porcentage and bolls weight.

Melhoramento da cana-de-açúcar: X. Ensaio de clones provenientes de hibridações realizadas em 1981 e selecionados na região de Jaú (SP)

Clones de cana-de-acucar, provenientes de hibridacoes realizadas em Camamu (BA), em 1982, foram avaliados em um ensaio em terra roxa estruturada, na Usina da Barra, em Barra Bonita (SP). No ensaio, instalado em janeiro de 1987, utilizou-se o delineamento em blocos ao acaso, com quatro repeticoes, sendo as analises estatisticas feitas com dados medios de quatro cortes. Avaliaram-se os parâmetros: produtividade de cana e acucar, numero de colmos por 10 m, massa de um colmo, teor de sacarose (pol % cana) e de fibra e intensidade de florescimento. Alem disso, estudou-se a curva de maturacao em cana-planta e primeira soca. Considerando-se essas caracteristicas em relacao as variedades CB47-355, IAC67-112, NA56-79 e SP71-1406, utilizadas como padroes, os clones IAC82-3092 e IAC82-3258 revelaram-se promissores para o estudo de manejo varietal no Estado de Sao Paulo. O segundo corte e a media dos dois primeiros apresentaram os melhores resultados na selecao de clones.

Productivity, adaptability and stability of high-oleic peanut lines in the State of São Paulo

Bragantia, Campinas, v. 77, n. 2, p.265-272, 2018 ABSTRACT: Estimating stability and adaptability parameters of cultivars is a widely used study to access the genotype × environment interaction, in order to identify the best genotypes for each cultivation area. In this study, the adaptability and stability parameters were estimated in eight high-oleic lines and two peanut cultivars in 11 experiments in the State of São Paulo, Brazil, from 2008 to 2013, based on the data of the plots mean productivity (Kg.ha–1), with the objective of recommending the most productive genotypes in peanut producing regions in the State of São Paulo. The design used for these experiments was the randomized complete blocks, with four replications. Lines L. 599 and L. 551 were the best genotypes PLANT BREEDING Article

MÉTODOS DE AVALIAÇÃO DE MATURAÇÃO DE LINHAGENS DE AMENDOIM EM COLHEITA ANTECIPADA

João Francisco dos Santos 1 , Ignácio José de Godoy, Andrea Rocha Almeida de Moraes, Marcos Doniseti Michelotto, Antônio Lúcio Mello Martins e Denizart Bolonhezi Pesquisador Visitante do IAC, Campinas SP, joaofsantos@iac.sp.gov.br; Pesquisador(a) Científico(a) do IAC, Campinas SP, ijgodoy@iac.sp.gov.br, andrea@iac.sp.gov.br;3Pesquisador Científico do Polo Regional Centro Norte, Pindorama SP, michelotto@apta.sp.gov.br,lmartins@apta.sp.gov.br;4Pesquisador Científico do Polo Regional Centro Leste, Ribeirão Preto SP, denizart@apta.sp.gov.br.