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.

A field experiment was conducted at Dar El-Ramad, Fayoum District, Fayoum, Egypt during 2008/2009 and 2009/2010 seasons to study the effect of N fertilizer forms, i.e. F1: mineral N fertilizer form at the rate of 100 unit N fed -1 (as ammonium nitrate 33.0% N), F2: bio-fertilizer(biogena)+50 unit N/fed, as mineral fertilizer and F3: organic form as chicken manure and irrigation regime treatments, i.e. I1: irrigation at 40% Available Soil Moisture Depletion (ASMD), I2: irrigation at 60% ASMD and I3: irrigation at 80% ASMD on yield, yield components and some cropwater relations of onion crop (Giza 20 cv.). The split-plot design with four replications was used, where N forms were occupied the main plots while the split ones were allocated to irrigation regimes . The main obtained results were as follows: 1-Using mineral N form and irrigation at 40% ASMD. gave the highest averages of dry bulbs weight, dry bulbs diameter and dry bulbs yield (17.22 and 16.95 t dry bulbs fed -1 ) in the two successive seasons. The lowest averages of yield and its components were obtained from using FYM fertilizer form and irrigation at 80% ASMD in both seasons. 2-Seasonal consumptive use (ETC) averages were 41. 18 and 40.45 cm in 2008/2009 and 2009/2010 seasons, respectively. The highest ETc values, i.e. 45.49 and 44.48 cm were recorded from F1I1 interaction ,in 2008/2009 and 2009 /2010 seasons, respectively, whereas the lowest values, i.e. 37.24 and 36.57cm in the two successive seasons were resulted from F3I3 interaction.3-Daily ETC rates were low during Dec., then increased during Jan. and Feb., to reach its interaction maximum values during March and then declined again at April till harvesting. The values of daily ETc were decreased by applying organic or bio-fertilizer forms and increased irrigation regime more than 40% ASMD in the two growing season's months. The crop coefficient (KC) values were 0.45, 0.66, 0.75, 0.94, 0.63 and 0.43 (averages of the two seasons) for Dec., Jan., Feb., Mar., Apr. and May, respectively. 4-The highest water use efficiency values i.e. 9.054 and 8.998 kg dry bulb yield m -3 water consumed were obtained from irrigation at 40% ASMD as interacted with N fertilizer in the mineral form in 2008/2009 and 2009/2010 seasons. However, on managing the limited water resources efficiently under the present experiment conditions, it is advisable to irrigate the onion crop at 60% ASMD with mineral N fertilizer form in order to obtain reasonable figures for water productivity and to conserve irrigation water.

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

seasons to study the effect of ammonia gas rates, i.e., F 1 : 80 and F 2 : 100 kg N fed -1 (1 kg ammonia gas contain 82.4 % N) and irrigation regime i.e., I 1 : irrigation at 40%, I 2 : 60% and I 3 : 80% from available soil moisture depletion (ASMD), at sandy and calcareous soils, on yield, yield components and some water relations of wheat crop (Giza 168). A split plot design with four replications was used in both seasons. The obtained results showed that using 100 kg N fed -1 at 40% ASMD gave the highest averages of plant height, spike number m -2 , 1000-garin weight, spike weight m -2 , straw yield fed -1 (2011.4 and 2334.1 kg fed -1 ) in sandy soils (Site 1), and (2539.5 and 2716.7 kg N fed -1 ) in calcareous soils (Site 2), and grain yield fed -1 (1888.4 and 2077.4 kg fed -1 ) in Site 1 and (2209.4 and 2468 kg fed -1 ) in Site 2, in the two successive seasons, respectively. The lowest averages of yield and its components were obtained from applying 80 kg N fed -1 and irrigation at 80 % ASMD, at the two sites in both seasons. Seasonal consumptive use (ET C ) averages were 44.47 and 43.95 cm in 1 st season and 45.53 and 45.17 cm in 2 nd season, in both sites, respectively. The highest ET C values were recorded with the interaction (F 2 I 1 ), whereas, the lowest values resulted from the interaction (F 1 I 3 ) in all sites and seasons. Daily ET C rates were low during November and December, then increased during January and February, to reach its maximum values during March and then declined again at April till harvesting. The values of daily ET C decreased due to decreasing ammonia gas rate in the two growing season's months. The crop coefficient (K C ) values (averages of the two seasons) were 0.47, 0.54, 0.66, 0.70, 0.87, 0.67 and 0.47 in the Site 1 and 0.47, 0.55, 0.63, 0.67, 0.86, 0.67 and 0.49 in the Site 2, for, Nov., Dec., Jan., Feb., Mar., Apr. and May, respectively. The highest water use efficiency, i.e., 0.96 and 1.04 kg grains m -3 water consumed at the Site 1, and 1.14 and 1.24 kg grains m -3 water consumed at the Site 2, were obtained from (F 2 I 1 ) treatments in first and second seasons, respectively. Key wards: wheat yield, yield components, ammonia gas rates, irrigation regime, sandy soils, calcareous soil. INTRODUCTIONWheat is one of the most important cereal crops in the world. In Egypt, its production does not meet the current demand so, the Egyptian government is doing great efforts to reduce the gap between production and consumption.

The present investigation was conducted at Tameia agriculture research station Fayoum governorate, Egypt, during 2010 and 2011 seasons to study the combined effect of ridge width treatments i.e. R 1 : ridges of 60 cm, R 2 : ridges of 80 cm and R 3 : ridges of 100 cm(beds planted from both sides) and irrigation regime treatments i.e. I 1 : irrigation at 40% Available Soil Moisture Depletion(ASMD), I 2 : irrigation at 60% (ASMD) and I 3 : irrigation at 80% (ASMD) on yield components, yield and some water relations of sesame crop (Shandaweel -3 cv.).The split-plot design in randomized complatc block, with four replications was applied, where ridge width treatments were allocated to the main plots and the split ones were occupied with irrigation regime treatments. The main obtained results were as follows:-Plant height, capsule number plant -1 , seed weight plant -1 , 1000seed weight, seed yield (t ha -1 ) and seed oil content (%) were significantly affected by ridge width treatments and irrigation regime in both seasons.The highest averages of yield components, seed yield, R 1 I 1 (1.311 and 1.252 t ha -1 ) and seed oil content (51.84 and 51.24%) were detected from planting on ridges of 60 cm width and irrigation at 40% ASMD in the two successive seasons.Seasonal evapotranspiration as a function of all treatments were 121.01 and 117.68 cm ha -1 in 2010 and 2011 seasons, respectively. Planting on ridges of 60 cm width and irrigation at 40% ASMD gave the highest seasonal ET C values, i.e. 132.57 and 129.30 cm ha -1 in 2010 and 2011 seasons, respectively. However, the lowest ET C values, i.e. 110.22 and 107.48 cm ha -1 were detected from planting on ridges of 100 cm width (beds) and irrigation at 80% ASMD in the two successive seasons. The crop coefficient (K C ) values for the treatments which gave the highest seed yield and ET C values (R 1 I 1 ) were 0.42, 0.62, 0.80 and 0.57 for May, June, July and August months, respectively, (average of the two seasons).The highest water use efficiency values, i.e. 0.261 and 0.253 kg seeds m-3 water consumed were resulted from planting on ridges of 60 cm width and irrigation at 40% ASMD, in 2010 and 2011 seasons, respectively. It could be concluded that planting sesame on wide ridges of 100 cm (beds) saved about 7.7% (423 m 3 ha -1 ) in water evapotranspiration and gave acceptable yield.