OPTIMIZING TIME OF MICRONUTRIENT APPLICATION TO WHEAT PLANTS GROWN ON SANDY SOILS | ||
| Egyptian Journal of Agricultural Research | ||
| Article 2, Volume 79, Issue 3, September 2001, Pages 813-823 PDF (3.77 M) | ||
| Document Type: Original Article | ||
| DOI: 10.21608/ejar.2001.319919 | ||
| Authors | ||
| ABDEL-WAHED Y. NEGM; FAHMY A. ZAHRAN | ||
| Soils, Water and Environment Research Institute, Agricultural Research Center, Giza, Egypt | ||
| Abstract | ||
| A 2-year field study was carried out at Ismailia Agricultural Research Station during the two growing winter seasons of 1997/1998 and 1998/1999 to evaluate the optimum physiological stage of wheat plants for micronutrients Fe, Zn and Mn application. Mixture of Fe-chelate (6 % Fe), Zn-chelate (12 % Zn) and Mn-chelate (13 % Mn) at the ratio of 3:2:2 respectively was foliar applied (1 g mixture/L of water) at different physiological growth stages, i.e. tillering, elongation, booting and heading. The wheat plants received a single spray at each of these stages or two sprays at each pair of these stages alternatively. The obtained results revealed that foliar applications of the studied micronutrients at booting stage only or along with either tillering or elongation stage had the most significant effect on increasing wheat grain and straw yields along with the investigated yield attributes as well as grain protein content. This may suggest that booting stage is the most suitable stage to apply micronutrients for wheat plants. another spray at tittering or elongation stage being favorable. Grain contents of P, Fe, Zn and Mn were not significantly affected by the time of micronutrient application whereas grain K content did. | ||
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