Influence of zinc fertilization levels on growth, yield and quality of some sunflower genotypes (helianthus annuus L.)
By: al-Duri, Sad Ahmad Muhammad Ahmad; al-Dulaymi, Mouayyad Yunis Hasan. College of Basic Education Researches Journal. Vol. 11, no. 4 (Jun. 2012), pp.714-730, 17 p.
Subjects: Iraq; Mosul; Sunflowers; Fertilizers; Genetics