Data/hora: 03/06/2024 13:15:54

Biblioteca(s): | Embrapa Mandioca e Fruticultura.
Data corrente: | 23/08/1995
Data da última atualização: | 23/08/1995
Autoria: | HAAS, J. H.; BAR-YOSEF, B.; KRIKUN, J.; BARAK, R.; MARKOVITZ, T.; KRAMER, S.
Afiliação: | Contribution from the Agricultural Reseach Organization (A.R.O.), no . 1731-E, 1986 series. Received 20 May 1986.
Título: | Vesicular-Arbuscular mycorrhizal fungus infestation and phosphorus fertigation to overcome pepper stunting after methyl bromide fumigation
Ano de publicação: | 1987
Fonte/Imprenta: | Published in Agron. J. v.79, p.905-910, 1987
Idioma: | Inglês
Conteúdo: | Fumigation with methyl bromide (MB) is practiced to control pepper (Capsicum annuum L.) collapse disease, but in P-sorbing soils the plants grow poorly after fumigation. A field trial was conducted on a high P-sorbing soil (fossiliferous Typic Torriorthents) to compare  P-fertigation effects on plants grown on fumigated soil subsequently inoculated with Glomus macrocarpum Tul. & Tul. [MB plus vesicular-arbuscular mycorrhizal fungus (MB + VAMF)] and not inoculated (MB), and on nonfumigated soil (NF). Pepper plants in MB-VAMF were most mycorrhizal, and MB  plants the least. Both VAMF inoculation and P fertigation controlled early season stunting. Plants fertigated with 1.3 mmol P L-1 weighed the most 9 weeks after seeding, and among them the MB + VAMF plants were the heaviest. After 9 weeks, all plots were fertigated with 0.6 mmol P L-1. Yields were high (61 to 65 Mg ha-1) where 0.4 mmol P L-1 and more was supplied early in the season, and highest (73 to 74 Mg ha-1) where both P fertigation and VAMF inoculation were used. The presence of significant quantities of mycorrhiza early in the growth season inducet the highest percentage of large-size fruit, thus making P fertilization with VAMF inoculation most beneficial. Phophorus fertilization recommendations may have to be adjusted when used in conjunction with soil treatments that significantly reduce VAMF populations in the soil.
Palavras-Chave: | Capsicum annuum L; Glomus macrocarpum Tul; Phosphorus-sorption; Seedling inoculation; Tul.
Categoria do assunto: | --
Registro original: | Embrapa Mandioca e Fruticultura (CNPMF)
Exemplares: | CNPMF - (15868-1) - ADC - SP - -- - S5241 -  - S5241 - DIS