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Registro Completo |
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Biblioteca(s): |
Embrapa Caprinos e Ovinos. |
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Data corrente: |
01/08/1992 |
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Data da última atualização: |
25/07/2023 |
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Autoria: |
SALINAS, J. G.; SANS, J. I.; SIEVERDING, E. |
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Título: |
Importance of VA mycorrhizae for phosphorus supply to pasture plants in tropical oxisols. |
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Ano de publicação: |
1985 |
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Fonte/Imprenta: |
Plant and Soil, v. 84, n. 3, p. 347-360, 1985. |
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Idioma: |
Inglês |
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Conteúdo: |
Abstract: Inoculum of the VA mycorrhizal fungusGlomus manihotis was added to an Oxisol containing only a moderate inoculum potential of indigenous VA mycorrhizal fungi. Its effect on growth and P uptake of two pasture plant species was investigated in pot experiments. This effect was studied at a range of P applications, corresponding to 0, 9, 18, 35, 70 and 140 kg P/ha. The plant species used were the grassAndropogon gayanus and the legumePueraria phaseoloides, which were harvested four times,viz. at 70, 100, 130 and 160 days after planting. At first harvest, in the non-inoculated treatments, the first notable response to P application was found with 35 and 70 kg P/ha applied. Addition of inoculum resulted in growth response even at the lowest P application with both plant species. With successive harvests growth response to P application and inoculation disappeared rapidly. However, inoculation resulted in early and extensive development of mycorrhiza, in longer continued P uptake of plants and in a 2 to 4 times higher utilization of added P with both plant species. In the case of no inoculum being added a negative effect of medium and high P applications on mycorrhiza was found in the grass, but not in the legume. In both species the frequency of mycorrhiza increased with time. The slight negative growth response of both plants to the smallest P dressing (9 kg/ha) when no inoculum was applied could be related to the high level of sporulation of indigenous mycorrhizal fungi. MenosAbstract: Inoculum of the VA mycorrhizal fungusGlomus manihotis was added to an Oxisol containing only a moderate inoculum potential of indigenous VA mycorrhizal fungi. Its effect on growth and P uptake of two pasture plant species was investigated in pot experiments. This effect was studied at a range of P applications, corresponding to 0, 9, 18, 35, 70 and 140 kg P/ha. The plant species used were the grassAndropogon gayanus and the legumePueraria phaseoloides, which were harvested four times,viz. at 70, 100, 130 and 160 days after planting. At first harvest, in the non-inoculated treatments, the first notable response to P application was found with 35 and 70 kg P/ha applied. Addition of inoculum resulted in growth response even at the lowest P application with both plant species. With successive harvests growth response to P application and inoculation disappeared rapidly. However, inoculation resulted in early and extensive development of mycorrhiza, in longer continued P uptake of plants and in a 2 to 4 times higher utilization of added P with both plant species. In the case of no inoculum being added a negative effect of medium and high P applications on mycorrhiza was found in the grass, but not in the legume. In both species the frequency of mycorrhiza increased with time. The slight negative growth response of both plants to the smallest P dressing (9 kg/ha) when no inoculum was applied could be related to the high level of sporulation of indigenous mycorrhizal fung... Mostrar Tudo |
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Palavras-Chave: |
Glomus manihotis; Introducao. |
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Thesagro: |
Andropogon Gayanus; Fertilizante; Fósforo; Micorriza; Pastagem; Pueraria Phaseoloides. |
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Thesaurus Nal: |
Glomus; Mycorrhizae; Pastures; Plant nutrition. |
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Categoria do assunto: |
F Plantas e Produtos de Origem Vegetal |
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Marc: |
LEADER 02289naa a2200289 a 4500
001 1520272
005 2023-07-25
008 1985 bl uuuu u00u1 u #d
100 1 $aSALINAS, J. G.
245 $aImportance of VA mycorrhizae for phosphorus supply to pasture plants in tropical oxisols.$h[electronic resource]
260 $c1985
520 $aAbstract: Inoculum of the VA mycorrhizal fungusGlomus manihotis was added to an Oxisol containing only a moderate inoculum potential of indigenous VA mycorrhizal fungi. Its effect on growth and P uptake of two pasture plant species was investigated in pot experiments. This effect was studied at a range of P applications, corresponding to 0, 9, 18, 35, 70 and 140 kg P/ha. The plant species used were the grassAndropogon gayanus and the legumePueraria phaseoloides, which were harvested four times,viz. at 70, 100, 130 and 160 days after planting. At first harvest, in the non-inoculated treatments, the first notable response to P application was found with 35 and 70 kg P/ha applied. Addition of inoculum resulted in growth response even at the lowest P application with both plant species. With successive harvests growth response to P application and inoculation disappeared rapidly. However, inoculation resulted in early and extensive development of mycorrhiza, in longer continued P uptake of plants and in a 2 to 4 times higher utilization of added P with both plant species. In the case of no inoculum being added a negative effect of medium and high P applications on mycorrhiza was found in the grass, but not in the legume. In both species the frequency of mycorrhiza increased with time. The slight negative growth response of both plants to the smallest P dressing (9 kg/ha) when no inoculum was applied could be related to the high level of sporulation of indigenous mycorrhizal fungi.
650 $aGlomus
650 $aMycorrhizae
650 $aPastures
650 $aPlant nutrition
650 $aAndropogon Gayanus
650 $aFertilizante
650 $aFósforo
650 $aMicorriza
650 $aPastagem
650 $aPueraria Phaseoloides
653 $aGlomus manihotis
653 $aIntroducao
700 1 $aSANS, J. I.
700 1 $aSIEVERDING, E.
773 $tPlant and Soil$gv. 84, n. 3, p. 347-360, 1985.
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Registro original: |
Embrapa Caprinos e Ovinos (CNPC) |
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