Salwa A.I. Eisa and M. B. Taha( 2010). Improving Soil Productivity For Wheat Plants By Adding Humic Acid And Iron- ChelatesEgypt. J. Soil Sci. 50, No.1, pp.15- 26
Abstract: FIELD experiment was carried out at Sides Research Station,. Beni Suief Governorate, for two successive winter seasons 2007/2008 and 2008/2009 using wheat plant variety (Beni Suief 1) to study the effect of humic acid and iron as foliar spray by concentration ( 0,3,6,9 L fed-forhumic acid and (0, 50,100,150 µg g-1) for Fe and their interaction on wheat yield, its components and grains quality. Data indicate that N, P and K contents in wheat plants at tillering stage were significantly affected by all tested treatments. Also, wheat grain and straw yields show significance response by all treatments, since wheat yield increased by rate of 20.24% and 44.83% for grains and straw, respectively when treating by (9L fed-1 humic acid +150 µg g-1 Fe). On the other hand, N,P,K% and Fe µg g-1 grain and straw content increased with all treatments, and reached to the highest values by foliar application with (9L fed-1humic + 150 µg g-1 Fe). Generally, a combined application of the humic substance with the Fe chelates significantly increased the concentration Fe availability to wheat plants, improved nutrition and increased grain wheat quality; it was probably related to the physiological actions of humic substances.
Keywords: (Humic substance, Iron-chelates, Wheat.)
