THE ECONOMIC LEVEL OF POTASUM AND ZANK MANURE OF WHEAT IN KAFR EL-SHIEKH GOVERNORATE

The wheat is considered the most important crops of food security. al thangh the big efforts to raise the productivity. The productivity of wheat particularly misr 1 , Gamaza 11 and codes 13 still has low level in productivity so , this research aims to measure the impact of used potassium and zinc manure of wheat in Kafr El-sheikh Governorate.
This objective is achieved through partial Budget. Also through level of potassium manure of wheat with or without zinc. The net return of these crops in different levels of the production functions by using Dummy variables.
-The most important results of this research that :- 
The average of productivity of wheat in misr 1 about 2.34, 2.67, 2.82 , 2.88 ton / fed .-
 While the average of productivity of Gama zall about 1.94 ,2.26 , 2.50 , 2.65 ton / fed the average of productivity of codes 13about 1.80 , 1.96 , 2.08 , 2.16 ton / fed , the estimation of the ( M.R.R )of wheat Misr 1 about ( 8.14 ) , ( 12.06 ) , ( 13.73 ) while the (M.R.R ) of Gama zall about (10.27) , ( 16.07) , ( 14.5) with out zinc .the estimation of ( M.R.R ) of codes 13 about (7.25) , 7.67) , (9.71)Which is higher compared to that with out zinc and potassium .-the study recommend the importance of potassium manure of wheat
with levels a bout (3.756) , (3.557) , (2.646) Ton / fed with potassium and Zinc with maximum profits .