Two field trails were carried out at El-Mattana Agricultural Research Station (latitude of 25.17 o N and longitude of 32.33 o E), Luxor Governorate, Upper Egypt during 2013/2014 (virgin cane) and 2014/2015 (first ratoon crop,) to find out the optimum harvesting age for some sugarcane varieties. Treatments consisted of a factorial combination of three promising sugarcane varieties (G.98-28, G. 99-160 and G.2003-49) and five harvesting age (10, 11, 12, 13 and 14-months) were arranged in factorial experiment conducted in randomized Complete Block Design with three replications. The results showed that all of the studied traits were significantly influenced by delaying the harvest age from 10 to 14-month age. Also, the results showed that the three promising sugarcane varieties significantly differed in stalk cane length, diameter, as well as Brix, sucrose purity, sugar recovery percentages, cane and sugar yields (Ton/fed.). Generally, promising sugarcane variety G.2003-49 was superior over the other two varieties i.e. G.98-28 and G. 99-160 in cane and sugar yields (Ton/fed.).

The present study was carried out at El-Mattana Agriculture Research Station Qena Governorate, Upper Egypt in 2007/2008 and 2008/2009 growing seasons to evaluate three sugarcane varieties (two promising varieties viz. G. 98-28, Phil. 8013 and the commercial variety G.T. 54-9) grown at three planting pattern; whole stalk as one, two and three pieces. Treatments were arranged in a split-plot design with three replicates. The main plots were assigned to three sugarcane varieties while planting pattern were distributed in the sub plots. Results showed that sugarcane varieties were significantly differed in stalk diameter, sucrose percentage and sugar yield ton/fed in the second season only. Cane yield was significantly affected by grown varieties in both seasons. Phli. 8013 showed superiority in all significant traits. Under this study as compared with of her varieties planting pattern were significantly affected in all studied traits except stalk height, brix and sucrose percentages in the second season and number of millable cane/m 2 in both seasons. Planting sugarcane with by cutting cane stalk into three pieces gave the highest values in all studied traits except, stalk diameter which obtained with planting whole stalk. The interaction effect between varieties and planting pattern was insignificant in all studied traits except in purity percentage in the first season. The height values were obtained when planting Phli.8013 variety by cutting cane stalks into three pieces. Under conditions of the present work, growing sugarcane varieties i.e., G.T. 54-9, Phil. 8013 and G. 98-28 by cutting cane stalk into three pieces recommended for getting the highest cane and sugar yields/fed.

The present study was carried out at El-Mattana Agricultural Research Station, (latitude of 25.17 o N and longitude 32.33 o E), Luxor Governorate, Upper Egypt in 2008/2009 and 2009/2010 growing seasons to evaluate the performance of three sugarcane varieties F. 160, Phil. 8013 and the commercial variety G.T.54-9) grown under different number of irrigations to obtain maximum cane and sugar yields/Fed. A split-plot experimental design with four replications was used in this work, where the main plots were assigned for number of irrigations, while sugarcane varieties were distributed in the sub-plots. The results showed that increasing the number of irrigations from 14 to 18 and 22 increased considerably stalk height, number of millable canes/m 2 , reducing sugars, cane and sugar yields/Fed. Meanwhile, sucrose, purity and sugar recovery percentages were insignificantly influenced by irrigation number. The tested sugarcane varieties differed significantly in stalk height, number of millable canes/m 2 , reducing sugars, juice purity %, cane and sugar yields. Commercial variety G.T. 54-9 recorded the highest values of stalk height and number of millable canes/m 2 (in both seasons) as well as purity %, cane and sugar yields (in the 2 nd season). Sugarcane Phil. 8013 variety attained the highest cane and sugar yields, in the 1 st season. Sugarcane F. 160 variety had the shortest stalks, the lowest number of millable canes/m 2 , juice purity%, cane and sugar yields, but it recorded the highest reducing sugars %, compared with the other two varieties. It could be concluded that under the conditions of the present work, growing either G.T.54-9 or Phil.8013 with the application of 22 irrigations can be recommended to obtain the highest cane and sugar yields/fed.

Field experiment was conducted at Sids Horticulture Research Station, in Beni-Suif Governorate in 2018 and 2019 summer seasons to study the effect of intercropping sesame (Shandaweel-3) with hybrid tomato (Nema 1400) in three intercropping patterns 100% tomato + (50%, 33% and 25% sesame) in addition solid planting of both crops under three sowing dates for sesame was also studied the effect on plant growth, yield attributes and yield of both crops. The experiment was implemented in a split plots design with three replications. The main plots were devoted to the previous three intercropping dates, whereas, the sub-plots were allocated to the intercropping patterns of sesame with tomato. Results indicated that intercropping patterns increased all growth characteristics and yield of tomato compared with solid planting. The yield and its components were significantly affected by different intercropping patterns in both crops. The highest tomato yields (26.033, and 27.303ton fed. -1 ) in the first and second seasons, respectively, were obtained when sesame was planted before tomato by 15 days for tomato with 50% from density (CS1) pattern. However, the highest yield of sesame (2.83 and 3.60 ardab per fed. -1 ) in the first and second seasons, respectively, was obtained when sesame plants were grown before tomato by 15 days and 50% from total density, whereas, the lowest value was recorded at CS3 pattern (1.52 and 1.82ardab fed. -1 ), respectively. Maximum values of total land equivalent ratio (LER) (1.62 and 1.63), were observed with CS1in both seasons, respectively. The data indicated that tomato was dominating in the first date when sesame planting before tomato by 15 days. The total or net return showed that intercropping sesame with tomato by 50% from total density were higher (LE. 41954 and 44706) compared to solid tomato (LE.32108 and 33296) or solid sesame planting (LE. 5161 and 7991). Therefore, it is recommended to grow sesame before tomatoes by 15 days, at a distance of 10 cm between gores and one plant in the grove (with a density of 50% of the total density of sesame) to obtain the highest productivity of tomato crops and the highest economic return to farmers.

Two field experiments were carried out during two successive seasons on six wheat genotypes at the experimental farm, Faculty of Agriculture, El-Fayoum Univ. In 2005/2006 season, the six parental genotypes were planted and all possible crosses excluding reciprocals were hand made to produce 15 F 1 hybrids. In the second season (2006/2007), the parents and hybrids were planted using the randomized complete block design with five replications. The correlation coefficients and path analysis were calculated between grain yield and yield components of the 21 wheat genotypes. The tested genotypes exhibited significant differences due to the presence of sufficient genetic variability, and standard error values were in the range of 0.5 for spike length to 2.54 for number of grains/spike. Consequently the latter trait showed the highest values of phenotypic, genotypic and environmental variances followed by those of grain yield/ plant. Heritability and genetic advance values were high for days to heading, days to maturity, number of grains /spike and grain yield /plant. Grain yield /plant was positively correlated phenotypically and genotypically with days to heading and days to maturity and negatively with number of grains /spike. Phenotypic path coefficient revealed that the direct effect of days to maturity on grain yield was the highest (0.57) with relative importance of 18.8% followed by those of spike length. Concerning genotypic path coefficient, both traits, respectively, ranked as the first and second traits affecting grain yield /plant. The indirect phenotypic effects on grain yield exhibited by days to heading, days to maturity, plant height and spike length were 0.39, -0.11, 0.22 and 0.028, respectively. The relative importance of indirect genotypic effects on grain yield showed by plant height, days to maturity and spike length were 27.6, 21.1, and 11.8, respectively.