33 research outputs found

    GROWTH AND YIELD OF SOYBEAN WITH PENERGETIC APPLICATION

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    The soybean (Glycine max L.) plant is economically important for the food and animal feed industries due to its nutritional qualities. Soybean crops are highly productive and responsive to new technologies. The aim of this study was to assess the effect of Penergetic-P and Penergetic-K on the dry weight of shoot (DWS), dry weight of root (DWR), total dry weight (DWT), dry weight of nodules (DWN), number of nodules per plant (NNP), level of N in the shoot (NS), chlorophyll index, plant height and soybean yield. The experiment was conducted in a randomized block design with three replications. The means were compared by ANOVA and Duncan test (p ≤ 0.05). Differences among treatments for NNP were not significantly evident, but observed for DWN. The application of Penergetic-K in soil increased significantly the DWN in comparison with the application of only NPK and micronutrients. The DWR, DWS, DWT and the DWS/DWR ratio didn’t differ significantly among the treatments as well as the chlorophyll index and NS. The grain yield was significantly lower with the addition of NPK + micronutrients and significantly higher with the addition of Penergetic-K. The Penergetic-K promoted an increased soybean yield, up to 20% compared to the treatment with only NPK + micronutrients. It was concluded that the use of Penergetic benefits the soybean production and the soil quality

    Biological nitrogen fixation and agronomic features of soybean (Glycine max (L.) Merr.) crop under different doses of inoculant

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    Soybean is one of the most important crops in the world and presents great versatility. This study aims to investigate the effect of the Bradyrhizobium japonicum inoculant at 0, 600 and 1200 mL ha-1 on soybean crop, with and without 1 L ha-1 calcium (Ca 41%) + 0.4 L ha-1 boron (B 14%). Plants were grown for 90 days in plastic pots with 3 kg of sand and vermiculite (v/v) autoclaved at 121oC for 1 h. The experiment was conducted in a completely randomized design with five replications in a greenhouse. Soybean yield parameters were evaluated, such as, dry weight of shoot, root and total; plant height, nitrogen in the shoot; number and dry weight of nodules; chlorophyll index in the leaves; number of pods per plant (NPPL); number of grains per pod (NGP); and number of grains per plant (NGPL). The addition of Ca + B increased significantly NPPL, NGPL and NGP. The NPPL, NGPL were significantly increased with 600 mL ha-1 of the inoculant. The dose of 600 mL ha-1 of the inoculant combined with Ca+B significantly stimulated NPPL, NGPL and NGP. It is concluded that the productivity of soybean was increased with addition of 600 mL ha-1 inoculant, in combination with Ca and B.La soya es uno de los cultivos más importantes del mundo y presenta una gran versatilidad. Este estudio tiene como objetivo investigar el efecto del inoculante Bradyrhizobium japonicum a 0, 600 y 1200 ml ha-1 en cultivo de soya, con y sin 1 L ha-1 calcio (Ca 41%) + 0,4 L ha-1 boro (B 14 %). Las plantas se cultivaron durante 90 días en macetas de plástico con 3 kg de arena y vermiculita (v / v) tratadas en autoclave a 121°C durante 1 h. El experimento se realizó en un diseño completamente aleatorizado con cinco repeticiones en un invernadero. Se evaluaron los parámetros de rendimiento de soja, tales como, peso seco del brote, raíz y total; altura de la planta, nitrógeno en el brote; número y peso seco de los nódulos; índice de clorofila en las hojas; cantidad de mazorcas por planta (NPPL); número de granos por pod (NGP); y número de granos por planta (NGPL). La adición de Ca + B aumentó significativamente NPPL, NGPL y NGP. El NPPL y NGPL se incrementaron significativamente con 600 mL ha-1 del inoculante. La dosis de 600 ml ha-1 del inoculante combinado con Ca + B estimuló significativamente NPPL, NGPL y NGP. Se concluye que la productividad de la soya se incrementó con la adición de 600 mL ha-1 de inoculante, en combinación con Ca y B.A soja é uma das oleaginosas mais importantes no mundo e possui grande versatilidade. O objetivo deste estudo foi estudar o efeito da inoculação de 600 e 1200 mL ha–1 de um inoculante líquido com Bradyrhizobium japonicum e com ou sem adição de 1 L de cálcio ha–1 (Ca 41%) e de 0,4 L de boro ha–1 (B 14%) na cultura da soja. As plantas foram crescidas por 90 dias em potes plásticos com 3 kg de areia: vermiculita (v:v) autoclavados (121ºC, 1 h). O experimento foi conduzido em delineamento inteiramente casualizado, com 5 repetições em casa de vegetação. Foram determinados parâmetros relacionados com o desenvolvimento e produtividade da soja, como: a massa seca da parte aérea, de raízes e total, nitrogênio da parte aérea, número e massa seca de nódulos, índice de clorofila das folhas, número de vagens por planta (NVPL), número de grãos por vagens (NGV) e número de grãos por planta (NGPL). A adição de Ca+B aumentou significantemente NVPL, NGPL e NGV. O NVPL, NGPL foram aumentados significantemente com a adição de 600 mL ha–1 inoculante. A adição de 600 mL ha–1 inoculante juntamente com a adição de Ca+B estimulou significativamente o NVPL, NGPL e NGV. Conclui- se que a produtividade da cultura da soja foi aumentada com a adição de 600 mL ha–1 inoculante juntamente com a adição de Ca e B

    Cultivares de mandioca sob dois sistemas de cultivo

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    As cultivares de mandioca apesar de adaptarem-se aos mais diferentes ecossistemas, apresentam alta interação do genótipo com o ambiente. O seu cultivo restringe-se em grande parte em um sistema de revolvimento solo, que altera as propriedades físicas, química e biológica do solo. Diante do exposto, objetivou-se avaliar cinco cultivares de mandioca em dois sistemas de plantio, direto sobre palhada de aveia preta (SPD) e convencional com revolvimento do solo (SPC). O experimento foi conduzido durante a safra de 2016/2017 em Tuneiras do Oeste (Paraná). O delineamento experimental utilizado foi blocos casualizados, em esquema fatorial 5 x 2 [5 cultivares de mandioca, sendo IPR União, IAC 15, IAC 90, Baianinha e Olho Junto (Caiua) x 2 sistemas de plantio (SPD e SPC)], contendo cinco parcelas e seis repetições. O plantio foi realizado em setembro de 2016 e conduzido por 8 meses até a colheita. Foram analisadas a altura e quantidade de folhas das plantas, tamanho, número, biomassa (produção) das raízes, podridão e teor de amido das raízes. O SPD aumentou o tamanho das raízes e quantidade de folhas e diminuiu a podridão de raízes. As variedades IPR União, Baianinha, IAC 90 e IAC 15 aumentaram a produção de raízes no SPD, no entanto, a variedade Olho Junto obteve maior produção no SPC. O teor de amido nas variedades IPR União e Olho Junto aumentaram no SPC. Conclui-se que o SPD, no geral, diminui a podridão de raízes e aumenta o crescimento de raízes e consequentemente a produção da mandioca

    Essential oil chemotypes of turmeric (Curcuma longa L.) cultivated in four different farmers in Southwest of Paraná State - Brazil

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    Turmeric (Curcuma longa L.) has economic value for its medicinal and nutritional properties. This study aimed to evaluate the yield and phytochemical profile of essential oil (EO) from turmeric rhizomes produced by family farmers in rural communities in Francisco Beltrão – PR, and soil microbiological quality from those farmers. Four turmeric farmers from the communities of São Braz, Rio Tuna, Rio Saudade and Nova Sessão were selected. Soil samples and rhizomes of turmeric were collected and subsequently evaluated for soil microbial biomass carbon, soil basal respiration and soil metabolic quotient and EO yield of rhizomes by hydrodistillation. After, EO yield (%) was calculated and the chemical identification by GC/MS. The Nova Sessão community had better soil microbiological quality, whereas the EO yield (3.02%) was higher for the Rio Tuna community. The four rural communities showed good results for the EO yield (ranging from 1.68 to 3.02% and compared to the literature, which ranged from 0.2 to 5.27%), with the São Braz community, showing a significant reduction and the Rio Tuna community had the highest EO yield. Also was observed variation in the major EO chemical compounds, e.g.: ar-turmerone (44.27 to 64.21%), curlone (12.27 to 20.83%), α-zingiberene (1.30 to 15.97%) and β-sesquiphellandrene (1.24 to 10.07%). It is concluded that among the four communities studied, there was significant variation in the EO yield and differences in EO quality of turmeric, especially in the major components ar-turmerone and α-zingiberene
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