TY - DATA AU - Ahmed,Huda Mohamed Mahmoud TI - Improvement of maize crop (Zea Mays L.) by using of nitrogen fertilization and foliar spray of some activators PY - 2017/// KW - Corn KW - Fertilizers KW - Nitrogen fertilizers N1 - Thesis (Ph.D.) -- Sohag University, 2017; Includes bibliographical references (Leaves242-283) UR - http://nile.enal.sci.eg/thesis/4313.pdf ER -