Heba M.A. Khalil, M.M.I. Afifi, Y.S. El-Akshar, Y.I. Mahmoud( 2014). Biodynamics For Controlling of Weeds Using Bio-Organic Fertilizers With Rice Straw and Improve Productivity Barley Plants in Sandy SoilINTERNATIONAL JOURNAL of ACADEMIC RESEARCH Vol. 6. No. 6. November, 2014
Abstract: A field experiment was carried out at Ismailia Agric. Res. Station belong to Agric.Res.Center during the winter season of 2012- 2013 to study the effect of added rice straw in soil which inoculated with plant growth promoting bacteria (PGPR) as biofertilizers (Pseudomonas putida, Bacillus polymexa, Bacillus megaterium, Serratia sp). PGPR and compost tea both separately or together with rice straw have impact on growth grass in sandy soil cultivated with barley plants. All treatments fertilized with half recommended dose of nitrogen fertilizer except control, it received full N,P and K. The Results were revealed rice straw and compost tea treatments increased significantly soil organic matter compared with the rest of the transactions under study. Also, all
treatments transactions with add of compost tea and (PGPR) led to significant a lower degree of pH and EC of the soil compared with other treatments during period from 50 to 90 day. However, PGPR increased nitrogen,
phosphorus and potassium content of the soil compared with the rest of the transactions, as well as control and soil biological activity. The treatment of spraying mixed of bacterial (PGPR) and compost tea (bio- extract) in
presence of rice straw resulted in significant increase for barley crop yield and N.P.K. contents of the grain and straw. It also, led reducing the appearance of weeds and to maximize the benefit of the plant nutrients. Generally, it could be concluded that the use of the treatment of spraying mixed of bacterial strains (PGPR) and compost tea in the presence of rice straw is useful for the barley crop, resistance of weeds and enhancement of soil chemical and biological properties.
Keywords: (Barley, Compost tea, PGPR, Rice straw.)
