Field experiment was conducted at Tamia Agric., Res., Station, Fayoum, Egypt during 2008/2009 and 2009/2010 seasons to study the effect of N-fertilizer forms, i.e. F1: organic form as chicken manure at the rate of 20m 3 fed-1 , F2: bio-fertilizer (biogena)+37.5 kg mineral N as ammonium nitrate 33.0% N and F3: mineral N fertilizer at the rate of 75 kg N fed-1 (as ammonium nitrate 33.0% N) and scheduling irrigation treatments, i.e. I1: irrigation at 0.8 cumulative pan evaporation (C.P.E.), I2: irrigation at 1.0 and I3: irrigation at 1.2 C.P.E. on yield, yield components and some water relations of wheat crop (Giza 168 cv.). A split-plot design with four replicates was used since N-fertilizer forms were represented in the main plots while scheduling irrigation treatments were occupied the split ones. The main obtained results were as follows: 1-Using mineral N form and irrigation at 1.2 C.P.E. gave the highest averages of spike numbers m-2 , 1000-grain weight, grain yield fed-1. (2149.28 and 2271.50 kg fed-1) and straw yield (2619.60 and 2775.85 kg fed-1) in the two successive seasons, but plant height was affected significantly in the second season only. The lowest averages of yield and its components were obtained from using organic fertilizer(chicken manure) form and irrigation at 0.8 C.P.E. in both seasons. 2-Seasonal consumptive use (ETC) averaged 39.23 and 41.83 cm in 2008/2009 and 2009/2010 seasons, respectively. The highest ETC values, i.e. 44.12 and 46.36 cm were recorded with the interaction (F3I3), whereas the lowest values as 35.65 and 38.72 cm resulted from the interaction (F1I1), in 2008/2009 and 2009 /2010, respectively, 3-Daily ETC rates were low during Nov. and Dec., then increased during Jan. and Feb., to reach its maximum values during March and then declined again at April till harvesting. The values of daily ETC decreased due to organic or bio-fertilizer forms in the two growing season's months. The crop coefficient (KC) values (averages of the two seasons) were 0.

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The present investigation was carried out at Tamiea Agric. Res. Station, Fayoum Governorate during 2009 and 2010 seasons to study the effects ofammonia fertilizer levels, i.e. N 1 : 15, N 2 :30 and N 3 :45 and N 4 : 60 kg N fed -1 ,four irrigation regime i.e. irrigation at I 1 : 0.6, I 2 : 0.8, I 3 : 1.0 and I 4 : 1.2cumulative pan evaporation (C.P.E.) and their interaction on yield, yield components and some crop water relations of sunflower (Sakha 53). The strip-plot design with four replicates was used. The obtained results were as follow:Yield and all yield components i.e. plant height, head diameter and weight, as well as seed weight head -1 and 100-seed weight, were obtained from applying 60 kg N fed -1 and irrigating sunflower at 1.2 C.P.E., surpassed significantly those obtained from the other treatments. However, the highest seed oil content were detected fromapplying 15 kg N fed -1 and irrigating sunflower at 1.2C.P.E.Seasonal water evapotranspiration (ET C ) reached its maximum values (54.69 and 53.05 cm in 2009 and 2010 seasons, respectively), as sunflower crop received60 kg N fed -1 and irrigated at 1.2C.P.E.. The daily ETc increased by increasing the irrigationintervals from 0.6 to 0.8 to 1.0 to1.2 C.P.E.. The peak of daily ETc occurred on July. The K C (crop coefficient) during the growing seasons were 0.42, 0.52, 0.62,0.88 and 0.51 for May, June, July, August and September months, respectively, (means of two seasons).Applying 60 kg N fed -1 and irrigation at 1.2C.P.E. gave the highest water use efficiency, i.e. 0.497 and 0.480 kg seeds m -3 water consumed in 2009 and 2010 seasons, respectively.

Field experiments were carried out at Fayoum Agric. Res. Station (Tameia) during 2008 and 2009 seasons to study the combination effects of three sowing dates, i.e. D 1 :1 st June, D 2 :10 th June and D 3 : 20 th June and three irrigation scheduling treatments according to cumulative pan evaporation (C.P.E), i.e. (I 1 ):0.8, (I 2 ):1.0 and (I 3 ): 1.2 on yields, yield components, and some water relations of maize hybrid (TWC 310). A split-plot design with four replications was used. The main results obtained were as follows: 1. Grain yield/fed, yield components were significantly affected by sowing dates and irrigation scheduling treatments in both seasons. Sowing on 1 st June and irrigation at 1.2 C.P.E (I 3 ) gave the highest averages of stem diameter, ear length, ear diameter, grain weight/plant and 100-grain weight in both seasons. Nevertheless, third sowing date (D 3 ) and irrigation at 0.8 C.P.E (I 1 ) gave the lowest yield component averages in both seasons. 2. The highest grain yield, i.e. 2476 kg grains/fed was detected from (D 1 I 2 ) in the first season, and 2857 kg grains/fed from (D 1 I 3 ) in the second season. On the contrary, third sowing date (D 3 ) and irrigation at0.8 C.P.E (I 1 ) gave the lowest grain yield/fed, i.e. 1955 and 1414.10 kg grains/fed in 2008 and 2009 seasons, respectively. 3. Seasonal consumptive use (ET C ) averaged 61.69 and 61.35 cm in 2008 and 2009 seasons, respectively. The highest ET C values, i.e. 69.35 and 68.91 cm were recorded from (D 1 I 3 ) in 2008 and 2009 seasons, respectively, whereas, the lowest values, i.e. 54.1 and 53.15 cm in the two successive seasons were resulted from (D 3 I 1 ). 4. The daily ET C rates were low during June, and tended to increase during July to reach its peak during August and then declined during September and October in both seasons. the crop coefficient (K C ) values, for high grain yield were 0.44, 0.70, 1.06, 0.67 and 0.63 for June, July, August, September and October, respectively(as an average in two seasons) 5. The highest water use efficiency, i.e. 0.896 and 0.987 kg grain/m3 water consumed were obtained from (D 1 I 2 ) and (D 1 I 3 ) treatments in 2008 and 2009 seasons, respectively.

The present investigation was conducted at Fayoum Agric. Res. Station (Tamiea), Fayoum Governorate, Egypt during 2009/2010 and 2010/2011 seasons to study the combined effect of ridge width (60, 80 and 100 cm) and available soil moisture depletion (35, 55 and 75% ASMD) on seeds yield, yield components and some water relations of faba bean crop (Giza -843 hybrid). A split plot design with four replications was used in both seasons. The main obtained results were as follows:Plant height (110.6, 102.7cm), pod number/plant (20.9, 19.10), seed weight/plant (50.2, 48.9 gm), 100-seed weight (64.5, 62.3 gm) and highest seed yield/fed (1611.51 and 1402.2 kg/fed in 2009/2010 and 2010/2011 seasons, respectively), resulted from planting on ridges of 60 cm width and irrigation at 35% ASMD, surpassed significantly those obtained from the other treatments, in the two successive seasons. However, the highest number of branches/ plant were detected from planting on ridges of 80 cm width and irrigating at 35% ASMD, in the two seasons.Seasonal consumptive use (ET C ) averaged 33.15 and 33.00 cm in 2009/2010 and 2010/2011, respectively. Planting on ridges of 60 cm width and irrigation at 35% ASMD gave the highest ET C values, i.e., 37.95 and 36.66 cm in the two successive seasons. The lowest ET C values, i.e., 28.62 and 30.14 cm were detected from planting on the widest beds and 75% ASMD treatment in both seasons, respectively.Daily ET C rates were low during Oct., Nov. and Dec. then increased during Jan. reached its maximum values during Feb. and declined again till harvesting. The crop coefficient (K C ) values were 0.49, 0.62, 0.73, 0.81, 0.90 and 0.59 for Oct., Nov., Dec., Jan., Feb. and March, respectively. (average of the two seasons)The highest water use efficiency values i.e., 1.011 and 0.911 kg seeds/m 3 water consumed were obtained from planting on ridges of 60 cm width and irrigation at 35% ASMD treatment in 2009/2010 and 2010/2011 seasons, respectively.Results indicate that planting on wide ridges of 100 cm width safe about 11.45% of the water consumed and produced an acceptable economic seed yield Key words: faba bean, yield, yield components, ridge width, irrigation regimes, water relations. INTRODUCTIONFaba bean considered the most important winter legume crop in Egypt. The high protein content of its seeds (28%) gave this crop the greet importance in human consumption, as well a sheep source of protein. Also, the role of this crop in improving soil characteristics after harvesting, because it increased soil fertility as nitrogen fixation in soils by root nodules, leaving about 20-25 units of N/fed, which will be beneficial for the next cultivated crop.Concerning, the effect of ridge width many investigators have been reported a tendency for increase in yield and some yield components such as no. of branches/plant, no. of pods, seeds weight/plant and 100-seed weight by