Data/hora: 29/05/2024 00:52:35

Biblioteca(s): | Embrapa Soja.
Data corrente: | 26/07/1993
Data da última atualização: | 07/10/2004
Autoria: | HAMDI, Y. A.; ALAA EL-DIN, M.N.; ABD EL-WAHAB, S.M.
Afiliação: | Institute of Soil & Water Research, Agricultural Research Center, Dokki, Giza, Cairo, Egypt.
Título: | Nodulation and response to the inoculation of soybeans under egyptian conditions.
Ano de publicação: | 1981
Fonte/Imprenta: | In: CONFERENCE ON IRRIGATED SOYBEAN PRODUCTION IN ARID IN AND SEMI-ARID REGIONS, 1979, Cairo. Procedings. Urbana-Champaign : INTSOY / University of Illinois, 1981. p.63-68. (INTSOY. Series, 20).
Idioma: | Inglês
Notas: | Ver trabalho preliminar no PC 3730.
Conteúdo: | The soils of Egypt are void of R. Japonicum strains. Greenhouse and field studies have indicated the response of soybeans to inoculation, provided that certain measures are taken. An inoculation rate of 28 x 10-6 bacteria per seed caused almost 100 percent nodulation . The peat moss carrier, which replaced Okadin (Nile silt soil), seems promising to ensure this rate. The current methods of propagating rhizobia, e.g.,batch cultures, should be developed into submerged methods. Salinity reduced the growth of R. Japonicum and the reponse to inoculation. Soybean seeds produce toxic substances for soybean rhizobia. These toxins disappear by soaking the soybean seeds for 4 hours. The moisture and temperature stress prevailing in dry or wet soils after soybeans are planted may contribute to nodulation failure. The first irrigation is important for the viability of rhizobia. The use of thermotolerant rhizobia and granular inoculants may overcome such problems. Certain fungicides may interfere with nodulation on soybeans, e.g., Phygon was inhibiting, spergon was less toxic, and orthocide at 0.3 percent was stimulating. Increased rates of Benlate (benomy1) or Vitavax captan tentedto show harmful effects. The use of so-called "compatible fungicides" and granulated inoculants may avoid the harmful effects of fungicides.
Palavras-Chave: | Egito; Inoculation; Soybean.
Thesagro: | Inoculação; Nodulação; Rhizobium Japonicum; Soja.
Thesaurus Nal: | Egypt; nodulation.
Categoria do assunto: | --
Registro original: | Embrapa Soja (CNPSO)