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Registro Completo |
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Biblioteca(s): |
Embrapa Soja. |
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Data corrente: |
08/07/1992 |
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Data da última atualização: |
08/07/1992 |
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Autoria: |
BLACK, R.; TINKER, P. B. |
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Título: |
The development of endomycorrhizal root systems: II. Effect of agronomic factors and soil conditions on the development of vesicular-arbuscular mycorrhizal infection in barley and the endophyte spore density. |
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Ano de publicação: |
1979 |
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Fonte/Imprenta: |
New Phytologist, v.83, p.401-413, 1979. |
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Idioma: |
Inglês |
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Conteúdo: |
The percentage of roots with vesicular-arbuscular mycorrhizal fungi and numbers of spores were measured over 2 years in a field experiment with different crop rotations of barley, kale and fallow. Spore numbers, and subsequent infections of barley crops, were largest following barley; boht kate fallow breaks reduced spore population and infection simiraly. With all crop rotations there was a long delay before appreciable percentage infection of roots developed, followed by a rapid increase, and then a constant value. Such late infections appear unlikely to improve crop nutrition, and final yield was negatively related to per cent infection. A survey of barley crops in 2 years on commercial fields following at least 3 years barley showed that infection was rather similar in most fields. There was a very slight correlation between infection percentage, clay content and pH, but no other soil factor had any influence. Early-sown crops tended to have low infection. |
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Palavras-Chave: |
Endomicorriza; Endomycorrhiza; Fungus: Barley; Mycorrhiza. |
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Thesagro: |
Cevada; Fungo; Micorriza; Solo. |
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Thesaurus Nal: |
soil. |
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Categoria do assunto: |
-- |
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Marc: |
LEADER 01703naa a2200241 a 4500
001 1457409
005 1992-07-08
008 1979 bl --- 0-- u #d
100 1 $aBLACK, R.
245 $aThe development of endomycorrhizal root systems$bII. Effect of agronomic factors and soil conditions on the development of vesicular-arbuscular mycorrhizal infection in barley and the endophyte spore density.
260 $c1979
520 $aThe percentage of roots with vesicular-arbuscular mycorrhizal fungi and numbers of spores were measured over 2 years in a field experiment with different crop rotations of barley, kale and fallow. Spore numbers, and subsequent infections of barley crops, were largest following barley; boht kate fallow breaks reduced spore population and infection simiraly. With all crop rotations there was a long delay before appreciable percentage infection of roots developed, followed by a rapid increase, and then a constant value. Such late infections appear unlikely to improve crop nutrition, and final yield was negatively related to per cent infection. A survey of barley crops in 2 years on commercial fields following at least 3 years barley showed that infection was rather similar in most fields. There was a very slight correlation between infection percentage, clay content and pH, but no other soil factor had any influence. Early-sown crops tended to have low infection.
650 $asoil
650 $aCevada
650 $aFungo
650 $aMicorriza
650 $aSolo
653 $aEndomicorriza
653 $aEndomycorrhiza
653 $aFungus: Barley
653 $aMycorrhiza
700 1 $aTINKER, P. B.
773 $tNew Phytologist$gv.83, p.401-413, 1979.
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Registro original: |
Embrapa Soja (CNPSO) |
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