Produção e qualidade da forragem aproveitável de cultivares de guandu durante o período seco

This work was carried out at Boa Esperanca Farm, sited in Jeriquara, Northeast of São Paulo State aiming to study seven cultivars of Pigeonpea (Cajanus cajan (L.) Millsp). Ramdomized blocks design were used in a split-plot scheme studying the following cultivars: Empasc 307, Fava Larga, Branco de Minas, ICPL 304, ICPL 85063, ICPL 270 and LGR 30, being the last four of them of Indian origin. Cultivars were cut three times during the period May-October, 1992. These cuts were done every twelve weeks, when leaves, flowers, pods and branches were harvested with diameter equal or smaller than 6 mm; the set of these fractions was considered available forage. Results showed that the cultivars, except Empasc 307, always revealed higher percentage of leaves and, consequently, higher dry matter production of this fraction in relation to total available forage. The available forage production, as well as the crude protein and acid detergent fiber percentage and in vitro dry matter digestibility allow to recommend the LGR 30, ICPL 304, Branco de Minas and ICPL 270 cultivars as the most promising ones for utilization as protein banks to be used during dry season.

Effect of ammoniation and moisture-content on the quality of signal grass (Brachiaria-decumbens stapf) hay

The experiment was carried out to evaluate the effects of two moisture levels (18-20% and 13-15%) and three anhydrous ammonia levels (0.0; 1.5; 3.0% of NH3) on the quality of Brachiaria decumbens Stapf hay. The hay was bailed in April and weighed and treated under plastic cover during 30 days. The hay presented a similar chemical composition when bailed with high or low moisture. The percentages of NDF (80.59; 77.61; 76.10%); hemicellulose (32.56; 29.48; 28.76%) and lignin (9.53; 8.21; 7.54% decreased and the percentages of crude protein (4.04; 11.35; 13.22%) and IVDMD (36.78; 49.72; 54.33%) increased as the NH3 level increased. The fractions ADF, cellulose, and ADIN did not change due to the ammoniation. The incidence of fungi decreased with application of NH3 being the better results obtained with the 1.5% treatments.

Comportamento de cultivares de soja quanto a qualidade fisiológica de sementes

This work was carried out in order to evaluate if there was a relationship between genotypes and the physiological soybean (Glycine max L.) seed quality. It was conducted during three years using seven cultivars each year. The seeds were harvested at: 1) yellow radicle or expanded pod stage, 2) yellow pod or physiological maturity (R7), 3) harvest maturity (R8), and 4) R8 + 21 days delay. Seed moisture content, standard germination, and vigor tests were performed. The germination and vigor evaluated by accelerated aging and electrical conductivity did not show physiological seed quality differences among genotypes as harvested at physiological maturity. Then, the evaluation of seed germination and vigor, when the environment is not a considered factor, is not an efficient method to show differences among soybean genotypes in terms of seed quality.

Características físicas e fisiológicas na qualidade industrial de cultivares e linhagens de trigo e triticale

The physical, physiological and rheological characteristics of cultivars and lines of wheat CD (COODETEC) 103, 104, 105, 107, 108, 109, 110, 111 and CD 2017 and CDFAPA 2036 lines and triticale (EMBRAPA 53), for quality of flour for bread making were studied. The weight of hectliter (HW), weight of thousand grains (WTG), percentage of germination, total protein and farinography, in a completely randomized experimental design, with four repetitions, except the farinography (with two repetitions) were analyzed. The means obtained were compared by the Scott Knott test at 5%. The cultivars were different regarding the tested parameters. The PH value were compatible for commercialization, but not always the higher PH value corresponded to the greater weight of thousand grains. Only the CD 108 and 111 cultivars may be destine for French bread considering the stability parameter. About the index of tolerance for the mixture, the cultivars and lines were not different, but only the flour of 2017 line would attend the values that were established for French bread-making and fermented cookies. The CD 104, 108 and 11 cultivars and the CD 2017 and CDFAPA 2036 line obtained the ideal index also for fermented cookies. The cultivars which presented better weight of thousand grain gave the best index of tolerance for the mixture. There was no positive relation between total protein and the farinography.

Desempenho de cultivares transgênicas de soja em sucessão a culturas de inverno em semeadura direta

Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)

Desempenho agronômico de cultivares de soja (Glycine max (L.) Merril) em sistemas de preparo do solo

Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)

Avaliação agronômica e modo de reprodução de híbridos intraespecíficos de Brachiaria decumbens

Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)

Resposta de cultivares de milho a Colletotrichum graminicola

Pós-graduação em Agronomia (Produção Vegetal) - FCAV

Problemas fitossanitários e crescimento de duas cultivares de café durante o primeiro ano em experimento FACE (“Free Air Carbon Dioxide Enrichment”)

Pós-graduação em Agronomia (Proteção de Plantas) - FCA

Adubação em cultivares de milho consorciado com braquiárias em cultivo de safrinha

Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)

Aspectos qualitativos e quantitativos em pulverização na cultura do amendoim e Brachiaria plantaginea (Link) Hitch

Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)

Períodos de interferência de plantas daninhas em cultivares de girassol

Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)

Controle biológico de Brachiaria decumbens Stapf em área de reserva legal em processo de recuperação, na região do Pontal do Paranapanema, São Paulo, Brasil

Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)

Períodos de interferência de plantas daninhas em algodoeiro cultivares BRS Safira e BRS Verde

Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)

Épocas de semeadura de cultivares de feijoeiro no período de inverno sob diferentes palhadas no cerrado: produtividade e qualidade fisiológica de sementes

Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)