Fósforo na produtividade e qualidade de sementes de feijão Carioca Precoce cultivado no período das águas Phosphorus on the productivity and seed quality of bean Carioca Precoce cultivated during the rainy season
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2011
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Abstract
O fósforo é o nutriente que mais limita a produtividade do feijoeiro em solos brasileiros, podendo influenciar na qualidade fisiológica de sementes. Objetivou-se com o trabalho avaliar a produtividade e a qualidade de sementes de feijão (Phaseolus vulgaris L.) do cultivar Carioca Precoce cultivado no período das águas em resposta à adubação fosfatada. Foram avaliadas seis doses de P (0; 30; 60; 90; 120 e 150 kg de P2O5 ha-1), aplicados no sulco da semeadura na forma de superfosfato triplo, com cinco repetições. A produtividade de sementes foi determinada com base na massa das sementes produzidas na área útil da parcela experimental. A qualidade das sementes foi avaliada por meio das seguintes determinações: massa de 100 sementes, teor de água, germinação, primeira contagem, teor de água após o envelhecimento acelerado, germinação após o envelhecimento acelerado, condutividade elétrica, emergência de plântulas no campo e massa de matéria seca de plântulas. A produtividade de sementes do feijão Carioca Precoce, cultivado no período das águas, aumentou linearmente em função do suprimento de P. A massa de 100 sementes e a qualidade fisiológica das sementes não foram alteradas pelo incremento das doses de P.
Common bean is an important crop in Brazilian agriculture and phosphorus (P) deficiency is one of the most yield limiting factors for this crop, thus plant P-deficiency can hamper the seed physiological quality. The objective of this study was to evaluate the productivity and quality of common bean seeds cv. Carioca Precoce cultivated during the rainy season in response to phosphate fertilizer. Six levels of P (0; 30; 60; 90; 120 and 150 kg of P2O5 ha-1), with five replications, were applied in the groove of sowing as triple superphosphate. The seeds yield, at the experimental plot, was determined by the dry weight. Seed quality was evaluated through the following determinations: 100-seed mass, seed moisture content, germination, first counting, moisture content after accelerated aging, germination after accelerated aging, electrical conductivity, seedling emergence in the field and seedlings dry weight. The productivity of beans seeds 'Carioca Precoce' cultivated during the rainy season increased linearly as related to phosphorus rates. The 100-seed mass and the physiological quality of seeds have not changed by increasing of P levels.
Common bean is an important crop in Brazilian agriculture and phosphorus (P) deficiency is one of the most yield limiting factors for this crop, thus plant P-deficiency can hamper the seed physiological quality. The objective of this study was to evaluate the productivity and quality of common bean seeds cv. Carioca Precoce cultivated during the rainy season in response to phosphate fertilizer. Six levels of P (0; 30; 60; 90; 120 and 150 kg of P2O5 ha-1), with five replications, were applied in the groove of sowing as triple superphosphate. The seeds yield, at the experimental plot, was determined by the dry weight. Seed quality was evaluated through the following determinations: 100-seed mass, seed moisture content, germination, first counting, moisture content after accelerated aging, germination after accelerated aging, electrical conductivity, seedling emergence in the field and seedlings dry weight. The productivity of beans seeds 'Carioca Precoce' cultivated during the rainy season increased linearly as related to phosphorus rates. The 100-seed mass and the physiological quality of seeds have not changed by increasing of P levels.
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zucareli2011fosfororevista
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| Authors | Zucareli, Claudemir;Prando, André Mateus;Junior, Edison Ulisses Ramos;Nakagawa, João; |
| Journal | revista ciência agronômica |
| Year | 2011 |
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| Keywords | Keywords not found |
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