Data/hora: 12/06/2024 05:46:13

Biblioteca(s): | Embrapa Soja.
Data corrente: | 08/07/1992
Data da última atualização: | 08/07/1992
Autoria: | BLACK, R.; TINKER, P. B.
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.
Ano de publicação: | 1979
Fonte/Imprenta: | New Phytologist, v.83, p.401-413, 1979.
Idioma: | Inglês
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.
Palavras-Chave: | Endomicorriza; Endomycorrhiza; Fungus: Barley; Mycorrhiza.
Thesagro: | Cevada; Fungo; Micorriza; Solo.
Thesaurus Nal: | soil.
Categoria do assunto: | --
Registro original: | Embrapa Soja (CNPSO)
Exemplares: | CNPSO - (13473-1) - ADD - SP - -- - 9583 -  - 9583 - DIS