Biofertilization of some plant macronutrients. M. Sc. Thesis (in work), Fac. of Agric., Benha Univ., Egypt. Efficiency of P and K biofertilizers in utilization of soil and rock P and K by sorghum (Sorghum bicolor ) grown on a light clay torrifluvent soil. NPK BIOFERTILIZERS ON SORGHUM (SORGHUM BICOLOR) GROWN ON A LIGHT CLAY TORRIFLUVENT SOIL AND INTERACTIONS AMONG THEM Potential of rice straw biochar, sulfur and ryegrass (Lolium perenne L.) in remediating soil contaminated with nickel through irrigation with untreated wastewater Foliar application of gibberellic acid endorsed phytoextraction of copper and alleviates oxidative stress in jute (Corchorus capsularis L.) plant grown in highly copper-contaminated soil of China