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| Melo,Suzana Pereira de; Monteiro,Francisco Antonio; Manfredini,Daniel. |
| One of the greatest problems for pasture establishment and maintenance are the extremely low concentrations of available phosphorus in soils. The objective of this study was to evaluate the influences on productive and physiologic attributes during Marandu palisadegrass (Brachiaria brizantha) establishment, following changes in phosphorus availability in the soil through the applications of phosphate and silicate. To achieve this, a fractionated factorial 5² design was used, with 13 combinations for silicon and phosphorus, respectively, in mg dm-3: 150 and 10; 150 and 170; 150 and 330; 225 and 90; 225 and 250; 300 and 10; 300 and 170; 300 and 330; 375 and 90; 375 and 250; 450 and 10; 450 and 170 and 450 and 330, distributed according to randomized blocks,... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Brachiaria brizantha; Leaf area; Phosphorus; Production; Silicon. |
| Ano: 2007 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162007000300010 |
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| Melo,Suzana Pereira de; Korndörfer,Gaspar Henrique; Korndörfer,Clotilde Maria; Lana,Regina Maria Quintão; Santana,Denise Garcia de. |
| The beneficial effects of silicon (Si) fertilization have been observed for several plant species, especially when submitted to stress, either biotic or abiotic. Among the possible reasons for the greater adaptability and resistance of brachiaria grass in areas of low fertility soils in Brazilian savanna, stands its capacity of absorbing and accumulating Si in aerial parts. To evaluate the effect of Si on dry matter yield of Brachiaria decumbens Stapf and Brachiaria brizantha Hochst, grown under two soil moisture regimes, a trial was set up in a completely randomized design factorial scheme (5 × 2 × 2), with five Si rates: (0; 242; 484; 968 and 1,452 kg ha-1), two soil water tensions (60% and 80% of field capacity) and the two brachiaria species. The... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Calcium silicate; Pasture; Water stress; Soil moisture. |
| Ano: 2003 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162003000400022 |
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| Korndörfer,Gaspar Henrique; Melo,Suzana Pereira de. |
| O estudo foi realizado em condições de campo, conduzido durante aproximadamente três anos, junto a Usina São Luiz Açúcar e Álcool, situada em Pirassununga (SP), utilizando-se a cultivar de cana-de-açúcar SP71-1406. Objetivou-se avaliar o desempenho de adubos fosfatados aplicados ao solo no plantio da cana planta, nas formas fluida e sólida, e seus efeitos ao longo do tempo, sobre a produtividade e qualidade da cana-de-açúcar. As fontes de fósforo testadas foram o superfosfato triplo, superfosfato simples, ácido fosfórico e uma mistura de ácido fosfórico + fosfato natural, na dose de 100 kg ha-1 de P2O5. As duas primeiras foram aplicadas na forma granulada e as duas últimas na forma fluida, em linha e no fundo do suco. Os resultados permitiram concluir que... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Adubos fluidos; Fosfato; Ácido fosfórico; Cana-de-açúcar. |
| Ano: 2009 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-70542009000100013 |
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