A FIELD trails were conducted during the two growing winter seasons of 2015/2016 and 2016/2017 at Sakha Research station , Kafr El-sheikh Governorate to study the effect of four irrigation regimes; cut-off irrigation at 100% (I 1 ), 90%(I 2 ), 85%(I 3 ) of the furrow length and alternative furrow irrigation (I 4 ), and four fertilization treatments; F 1 (100% of recommended phosphorus (RP)) as control, F 2 (75% RP+ phosphorien), F 3 (65%RP+ phosphorien) and F 4 (50%RP+ phosphorien) on Faba bean yield, some water relations, ground water table contribution and economic returns. The obtained results showed that water applied and water consumptive use could be arranged in descending order as; I 1 > I 2 > I 3 >I 4 in both seasons. Water saving by I 2 , I 3 and I 4 treatments were 4.64, 10.92 and 22.55%, respectively, comparing to I 1 -Treatment. Both of (I 3 ) and (F 3 ) treatments gave the highest increasing percent of the seed yield of faba bean and most its components, in both seasons. The highest values of water consumptive use, water application and water distribution efficiencies and ground water contribution were recorded under (I 4 ) in both seasons. The combination of I 4 and F 3 treatments surpassed the other treatments in increasing water productivity and productivity of irrigation water for seed and straw yields, net return, net return from water unit and economic efficiency of faba bean seed and biological yields in both seasons. It can be concluded that I 4 or I 3 in combination with F 3 is the proper treatments to obtain higher production of faba bean, water saving and economic returns.

A FIELD experiment was conducted in farmer's field located at Gammsa district, Dakahlya Governorate, Egypt, during two successive winter seasons 2017 and 2018 to determine and evaluate the response of watermelon grown on sandy soil to three irrigation regimes; 100%(I 1), 85%(I 2) and 70%(I 3) of soil field capacity and four applications of bio-mineral fertilizers; F 1 Applying the recommended dose of NPK (100%RNPK), F 2 (85%RNPK + biofertale), F 3 (70%RNPK + rhizobacterien) and F 4 (55% RNPK+ mixture of biofertale + rhizobacterien). Results showed that both of irrigation and fertilization treatments had highly significant effect on yield and its components of watermelon plants in both seasons. Maximum fruit yield and its components were achieved with I 2 and F 3 treatments in both seasons. Irrigation with (I 2), led to increase fruit yield by (14.26 and 14.30%) compared with I 1 and the corresponding values (11.72 and 12.97%) with (F 3) compared with F 1 in 1 st and 2 nd seasons, respectively. I 3 achieved higher values of TSS, vitamin C, soluble sugar, PIW and water saving. Moreover, F 3 followed by F 4 produced the highest value of PIW in both seasons compared with F 1. The combination of I 2 F 3 has superiority in increasing fruit yield and its quality, net return and economic efficiency. Net return from water unit was resulted from the combination of (I 3 F 4) and (I 3 F 3) as compared with (I 1 F 1) in both seasons, respectively.Generally, it could be concluded that I 2 F 3 or I 2 F 4 is the most efficient treatment for achieving economical watermelon fruit yield, economic return and saving water and mineral fertilizers.

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URING the 2018 and 2019 seasons, field trials were conducted at Farmer's Field in EL-Borulls district, Kafr Elsheikh Governorate, Egypt. to investigate and evaluate the impact of three irrigation regimes-irrigating tomato plants at 100% (I 1 ), 85% (I 2 ), and 70% (I 3 ) of ETc-as well as three organo-mineral noitrzrlitref treatments-F 1 (100% RNPK + 33% of recommended poultry manure (R.P.M.)), F 2 (75% RNPK + 50% of R.P.M.), and F 3 (50% RNPK + 60% of R.P.M)on tomato fruit yields, quality, some water relations and economic return. Results revealed that both I 2 and F 2 treatments in both seasons produced the most fruit of tomato and its components. When comparing the two seasons as a whole, irrigation with (I 2 ) increased fruit output by (4.12%) compared to irrigation with (I 1 ), while the comparable value with (F 2 ) increased fruit yield by (10.21%) compared to that with (F1). The combination of (I 3 F 3 ) produced the highest levels of TSS, %, vitamin C, and acidity, % during both seasons. Furthermore, maximum productivity of irrigation water and water savings, % were discovered with (I 3 ) during both seasons. The combination of (I 2 F 2 ) produced the highest levels of economic efficiency and net return, whereas the combination of (I 3 F 2 ) in the two seasons, achieved the highest net return from a water unit. It is possible to conclude that the most effective method for increasing the economic fruit output and quality of tomatoes while conserving both water and mineral fertilizers is the combination of (I 2 F 2 ) or (I 2 F 3 ).