Resposta do feijão-caupi a estirpes fixadoras de nitrogênio em Gurupi-TO

This study evaluated the effect of inoculation with nitrogen-fixing strains in cv. Vinagre cowpea at conditions of the southern state of Tocantins. The experiment was conducted in 2007/2008 harvest. The experimental design was randomized blocks with seven treatments and four replications. We tested five inoculants of bacteria: BR3301, BR3302, BR3262, BR3267 and BR3299, two controls, one with NPK and a control without fertilization or inoculation. At 35 and 55 days after emergence were evaluated the following variables: number of nodules, nodule dry mass, dry mass of shoots and relative efficiency. At the end of the cycle was evaluated the number of pods per plant, weight of pods per plant and grain yield. The data were subjected to analysis of variance by F test and meanswere grouped by Scott-Knott, both at 5% probability. The association between the means was assessed by Pearson correlation. The BR3302 strain showed higher dry weight of nodules at 35 and 55 DAE, however the control without fertilization or inoculation and the one with NPK contributed to higher grain yield. The number of pods and weight of pods per plant were the variables that most influenced yield. It is necessary to further study on the selection of strains of nitrogen fixing bacteria to the ecological conditions of the southern state of Tocantins.Este estudo avaliou o efeito da inoculação com cepas fixadoras de nitrogênio na cv. Caupi de Vinagre em condições do sul do estado do Tocantins. O experimento foi realizado na safra 2007/2008. O delineamento experimental foi em blocos casualizados, com sete tratamentos e quatro repetições. Foram testados cinco inoculantes de bactérias: BR3301, BR3302, BR3262, BR3267 e BR3299, dois controles, um com NPK e um controle sem fertilização ou inoculação. Aos 35 e 55 dias após a emergência foram avaliadas as seguintes variáveis: número de nódulos, massa seca dos nódulos, massa seca dos brotos e eficiência relativa. No final do ciclo foi avaliado o número de vagens por planta, o peso das vagens por planta e o rendimento de grãos. Os dados foram submetidos à análise de variância pelo teste F e as médias foram agrupadas por Scott-Knott, ambas com 5% de probabilidade. A associação entre as médias foi avaliada pela correlação de Pearson. A cepa BR3302 apresentou maior peso seco dos nódulos aos 35 e 55 DAE, porém o controle sem fertilização ou inoculação e o NPK contribuíram para maior produtividade de grãos. O número de vagens e o peso das vagens por planta foram as variáveis ​​que mais influenciaram o rendimento. É necessário um estudo mais aprofundado sobre a seleção de linhagens de bactérias fixadoras de nitrogênio às condições ecológicas do estado do sul do Tocantins

CRESCIMENTO E TEORES DE PIGMENTOS FOLIARES EM FEIJÃO-CAUPI CULTIVADO SOB DOIS AMBIENTES DE LUMINOSIDADE

paper aimed to evaluate the growth and accumulation of pigments in leaves of cowpea plants kept under two light conditions. The experimental design was carried out by using two randomized blocks with two treatments and twenty-two repetitions. The tested treatments were: natural environment (full sun) and artificial environment (50% light). The evaluated variety of cowpea (Vigna unguiculata (L.) Walp.) was the Vinegar, which has indeterminate growth habit. For growth analysis samples were taken at 10, 20, 30 and 40 days after emergence (DAE) and 50 DAE for determining the levels of a, b, and total chlorophyll and carotenoids content. Significant interaction was observed for the characteristics of the main stem length, leaf area, fresh weight and a, b, and total chlorophyll and carotenoids from plants grown in artificial environment. The studied type showed plasticity when subjected to low light, such as morphological changes in the length of main stem and leaf area, as well as changes in the amount of leaf pigments

ESFIRRA DE GOMA DE TAPIOCA E BATATA COM CASCA RECHEADA COM TAMBAQUI

O consumo de salgados fritos ou assados faz parte do hábito brasileiro, constituem-se alimentos baratos e de fácil acesso. Este trabalho teve como objetivo desenvolver uma esfirra assada de goma de tapioca e batata inglesa com recheio de tambaqui para indivíduos saudáveis, além de analisar a qualidade nutricional deste produto por meio da elaboração do rótulo nutricional. Para a determinação dos Valores Diários de Referência (VD%), utilizaram-se legislações RDC nº 359, RDC nº 360 e RDC nº 54 sendo esta última para apontar as fontes de nutrientes não contemplados no rótulo nutricional obrigatório. O produto deste estudo é uma opção de alimento com alto teor de proteínas advindo do peixe, alimento consumido em larga escala na região norte, com um recheio de requeijão caseiro, sendo uma boa opção de lanche nutritivo

DISTRIBUIÇÃO DE MASSA SECA E RENDIMENTO DE FEIJÃO-CAUPI INOCULADAS COM RIZÓBIO EM GURUPI, TO

The aim of this paper was to evaluate the contribution of different strains of rhizobia in the distribution of dry material and grain yield in cowpea plants, grown in cerrado in the state of Tocantins. The experiment was conducted in 2007/2008 season in cerrado in Gurupi, TO. Five treatments were studied with strains BR3301, BR3302, BR3267, BR3299 and BR3262 and treatment as a control (no inoculation and fertilizer). Plants were collected at 15, 25, 35, 45, 55 and 65 days after emergence (DAE) to determine the distribution of dry mass of leaves, stems, flowers and pods and the weight ratio of plant parts. Grain yield was determined at harvest as grain moisture reached 13%. We established the Pearson correlation coefficient of variables. The witness and BR3299 treatments promoted greater dry mass of plants at 65 DAE. The highest yield was obtained by the witness and BR3267. Further study is needed on the selection of strains of nitrogen-fixing bacteria in cowpea under various soil and climate in the state of Tocantins

Physicochemical and microbiological quality of raspberries (Rubus idaeus) treated with different doses of gamma irradiation

This study was conducted to evaluate the physicochemical and microbiological characteristics of raspberries exposed to different radiation doses. The fruits were harvested in the city of Campestre, MG, packed in polyethylene bags, and transported to the Federal University of Lavras (UFLA), where they were separated into 4 lots. Irradiation was performed at the Center for Development of Nuclear Technology in Belo Horizonte, MG. The doses used were 0 (control), 0.5, 1.0, and 2.0 kGy. After irradiation, the fruits were transported back to UFLA and stored at 1 ºC and 95% relative humidity (RH) for 12 days. The physicochemical analyses for mass loss, total soluble solids, titratable acidity, pH, total soluble sugars, total soluble pectin, firmness, vitamin C content, total antioxidant activity, and total phenolic, and the microbiological assays (coliform at 35 and 45 ºC, psychrotrophic and filamentous fungi and yeasts) were performed after 0, 3, 6, 9, and 12 days of storage. Lower loss of mass and filamentous fungi and yeast count were observed in the irradiated fruits, and 2 kGy was determined as the most effective dose for microbial control, but this irradiation dose also resulted in increased loss of fruit firmness