ASL), to evaluate the effect of fallow (control), clover and fodder maize as a preceding crops and foliar application of some micronutrients on yield and yield components of wheat cv. Gemmiza 11. The experimental design was split plot with three replications. Main plots were allocated by preceding crops and sub plots were occupied by three micronutrients salts FeSO 4 , ZnSO 4 and MnSO 4, in seven combinations of micronutrients foliar application T1: (Fe +Zn + Mn), T2: (Fe +Zn), T3: (Fe + Mn), T4: Fe, T5: (Zn + Mn), T6: Zn and T7: Mn. Micronutrients were sprayed three times at 30, 60 and 90 days after sowing. Results showed that wheat significantly affected by the preceding summer crops. Clover as a preceding crop left good residual effect on wheat plant which gave the highest values for all studied characters e.g. plant height, number of spikes/m 2 , No. of spikelets/spike, No. of grains/spike, 1000 grain weight and grain yield as well as straw and grain contents from Fe, Mn and Zn in the two seasons. With respect to micronutrients, the results showed that the differences between these treatments had significant effect on each of plant height, number of spikes/m 2 , No. of spikelets/spike, No. of grains/spike, 1000 grain weight and grain yield. The foliar application of mixture nutrients (Fe + Mn + Zn) produced the highest values of yield and its components during both seasons. Moreover, the foliar spray of Fe, Mn and Zn (alone or together and all three nutrients) has significant effect on wheat straw and grain-Fe, Mn and Zn concentration during the two seasons. Also, the results indicated that the interaction between preceding crops and micronutrients treatments had insignificant effect on all studied characters, except 1000 grain weight in the first season and number of spikelets/spike in the second one. In conclusion growing wheat following to clover and foliar application by mixture of Fe+Mn+Zn produced the maximum net income valued 2186 and 2098 LE.fad -1 during two seasons, respectively, compared to the other treatments.

Two field experiments were conducted in a new soil in extention field in El Qantra-West, Ismailia Governorate, Egypt during 2017 and 2018 summer seasons. The study aimed to evaluate the effect of six exogenous application levels of ascorbic acid (AsA) and micronutrients mixture on yellow corn hybrid 352 (three way cross) under three amounts of irrigation water (3750, 3000 and 2250 m 3 /fad., of the estimated crop evapotranspiration) using surface irrigation system. A randomized complete block split plot design with three replicates was used in each season. The irrigation treatments and the levels of AsA and micronutrients mixture were randomly allocated in the main and sub-plots, respectively. The most important findings could be summarized as follows. Decreasing the amount of irrigation water from 3750 to 2250 m 3 /fad., significantly diminished ear leaf blade area, relative water content and total chlorophyll at 85 days from sowing. Also, at harvest, ear length, 100-grain weight and grain yield/fad., were decreased, but irrigation water use efficiency (IWUE) was significantly ameliorated. Generally, foliar application by AsA or micronutrients mixture significantly increased these traits with increasing irrigation water use efficiency (IWUE) compared with their untreated analogues. The interaction between both studied factors showed that 350 ppm AsA treatment protected about 500 kg/fad., grains from collapse under moderate and severe water stress. Application of AsA saved approximately 750 m 3 /fad of irrigation water without yield reduction under stress conditions.