This study was carried out during 2019 and 2020 seasons at Arab El-Awamer Station, Assiut, Egypt to examine the effect of foliar application of humic and fulvic acids with 25 ml/L to improve soil properties with mineral nitrogen at 100% and 75% of the recommended dose on grain yield and its components. Humic and fulvic acids applied were individually or in combination of them at a ratio of 1:1 with N 75%. The obtained results showed that significant or highly significant effect between the genotypes for plant height and panicle length at two seasons. While the genotypes had a significant effect on grain ard / fed in the first season. The genotype hybrid Shandaweel-1 exhibited better results than the genotype hybrid -306 in most of the studied traits. Results of the present study also show that all the studied traits were significantly affected by the fertilization treatments. Among the fertilization treatments applied the treatment (N 75% + H + F) recorded the highest value s for most of the studied parameters. The interaction between genotypes and treatments had a significant effect on the days to 50% flowering in the second season, while on 1000-kernel weight the interaction between genotypes and treatments had a significant effect in the first season. From the above results it could be recommended economically using of (N 75% + H + F), thus we could save 25 % of the recommended dose of N and improve soil properties.
Twenty F 1 grain sorghum crosses, their parents (four CMS A-lines and five male R-lines) and one commercial check hybrid (H-306) were evaluated for yield and six other characters in 2020 and 2021 seasons at Arab El-Awamer Station, Assiut, Egypt under salt (S) and normal (N) soils. The obtained combined analysis showed highly significant differences between salinity treatments, genotypes and their interaction for all studied traits. The means of genotypes under normal soil were higher than the means of genotypes under salt soil for all traits except days to 50% flowering. Meanwhile, mean squares due to lines, testers and their interaction were significant or highly significant for almost studied traits. Mean crosses were higher than mean parent for all studied traits except days to 50% flowering. The best parents for general combining ability effects were BTX-807 and ICSV-112 for grain yield / plant under all environments (two salinity treatments and two years). The desirable crosses for specific combining ability for grain yield/plant were ICSA-88015 x ICSV-112, ATX-807 x RSH-19, ATX-807 x RSH-27, ASH-15 x Indian Exotic 27 and ASH-20 x ICSV-295) under all environments. The better crosses for heterosis relative to better parents were (ICSA-88015 x ICSV-112, ATX -807 x ICSV-112, ATX-807 x RSH-19, ATX-807 x RSH-27 and ASH-15 x Indian Exotic 27) under all environments. The best crosses for grain yield plant under normal and salt soil were ATX-807 x RSH-27and ASH-15 x Indian Exotic 27.
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