Rice Straw as Nematicidal on Root-knot Nematode and Microbial Impact of Population in Rhizosphere of Faba Bean Plant

摘要

A field experiment was carried out at Al-Arish Res. Station, Agric. Res. Center, North Saini, Governorate, Egypt during the winter season (2013) to study the effect of rice straw and plant growth promoting microorganisms (biofertile) on microbial population and controlling nematode infecting faba bean plants. The treatments with rice straw compost and biofertile (PGPM) led to non-significant values of pH and EC of the soil during 45 to 75 days. However, rice straw or/and biofertile significantly increased nitrogen, phosphorus, potassium and organic matter contents of the soil, increased soil biological activity and reducing the appearance of infected root-knot nematode population and actualized prodigious depletion in egg production. Whereas rice straw compost application in faba bean rhizosphere resulted reducing root-knot nematode population by 74.9%. The rice straw extract was effect on root-knot nematode as nematicidal where died through 25 hr with 100%. As well as to maximize the benefit of the plant nutrients. The most prominent rice straw compost which surpassed all treatments including the mineral and biofertilizers were those contained vinasse. Generally, mixture of biofertile and rice straw compost was useful for the faba bean crop and enhancement of soil chemical and biological properties.