Mutual Effect of the Organic, Inorganic and Bio-Fertilizers On Sudan Grass Grown In Sandy Soil

Sandy soil is poor in organic matter and nutrients. Animal production shortage due to the animal feed shortage needs an increased production of fodder crops. This experiment aims to study the effect of single and/or combined treatments of inorganic mineral, organic and bio-fertilization on the growth and macronutrients content of successive four cuts of sudan grass (sorghum vulgare var. sudanense) plants grown on sandy soil as well as the macronutrients’ availability in soil. A pot experiment was carried-out under greenhouse conditions at the experimental farm, Faculty of Agriculture, Zagazig University (summer season of 2019) in a randomized complete block design with four replicates. The organic fertilization (Org.) was four types of manures 1. chicken manure (CM), 2. farmyard manure (FYM), 3. quail manure (QM), and 4. rabbit manure (RM). Individual and combined treatments of 0.5 and/or 1% organic manures (CM, FYM, QM, and RM) with/without the mineral fertilizers (N-P-K, 50 and/or 100% RD recommended dose) with/without the bio-fertilizer Microbein (Mic) were mixed with the soil before planting. A control CL (without addition) was used. The results has showed that adding any organic sources at the rate of 0.5% with 50% N-P-K RD plus inoculation by Mic gave the highest significant values of four cuts and accumulative fresh and dry weight as well as N, P and K content (%) of Sudan grass compared with the CL treatment. The N and P of soil (mg kg−1) after harvesting were improved using 50% N-P-K with any organic wastes plus Mic inoculation. Organic and bio-fertilizer used with 50% N-P-K improved the Sudan grass cultivation in the sandy soil and can reduce the pollution of underground water. © The Author(’s).