الفهرس 
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Abstract
This present work aimed to study the response of alfalfa (Medieago ~ativa L.) and Egyptian clover (T~i6o¬lium alexand~inum L.) to some micronutrients; namely, Fe, Mn, Zn and Cu under the environmental conditions of Upper Egypt. It aimed also to find out the effect of these micronutrients and their interactions on the plant growth and chemical composition of the above two forage crops; and to investigate the micronutrients status in the soils as affected by intensive cuttings of these forage crops.
To fulfil these objectives four experiments were conducted in a green house at Shandweel Agricultural Research Station.
The first experiment was done on alfalfa crop to stody its response to Fe, Mn, Zn and Cu. This experiment consisted of four pot experiments in complete rand¬omized pot design for the four micronutrients (Fe, Mn,
Zn and Cu). The applied treatments for these pilot exp¬eriments were as follows:
Iron, at the levels of 0, 5, 10, 15, 20, 30 and 50 ppm. Manganese, at the levels of 0, 5, 10, 15, 20, 30 and 50 ppm. Zinc, at the levels of 0, 5, 10, 15, 20, 30 and 50 ppm. Copper, at the levels of 0, 2, 4, 8, 12, 16 and 20 ppm.
Four cuttings of alfalfa were taken.
The second experiments was done on Egyptian clover to study its response to the previous nutrients; i.e. Fe, Mn, Zn and Cu. This second experiment was planted in the same pots with the same previous treatment after soil pulverizing and thoroughly mixing. Five cuttings of Egyptian clover were taken.
The third experiment was done on Egyptian clover to study manganese and copper interrelationship on Egyptian clover. A soil sample from Shandweel Experimental Stat¬ion, Sohag, had been chosen. The treatments used in this experiment were as follows:-
Manganese, at the levels of 0, 10 and 20 ppm. Copper, at the levels of 0, 10 and 20 ppm.
All possible combinations of Mn and Cu in factorial pot experimental desigen were added and three cuttings were taken.
The fourth experiment was done on Egyptian cl