Seif’s scientific contributions

This study was conducted at the Agricultural Research and Experiments Farm , Faculty of Agriculture, Benha University during two seasons (2018/2019 & 2019/2020).This is to investigate the effect of combined fertilization rates which were (low, medium and high) yield and chemical content of some summer and winter forage crops. The experimental designed was conducted to evaluate the yield and chemical content of [some summer forage grasses guar (Cyamopsis tetragonolobe), cowpea (Vigna sinensis), pearl millet (Pennisetum typhoides) and summer sudan grass (Sorghum bicolor) and winter forage grasses berseem (Trifolium alexandrinum) and barley (Hordeum vulgare)], under three complete combined rates fertilizer of high (90:60:30 kg NPK/fed.), medium (60:40:20 kg NPK/fed.) and low (30:20:10 kg NPK/fed.), in addition to the control (without fertilization). Their interactions and its effect on yield and their chemical content, where the split plot design was used once , where the forage grasses were placed in the main plots, while the combined fertilization rates were placed in the sub-main plots, where three cuts were taken during the two study seasons. The results showed:A clear superiority of the treatment with a high rate of the combined fertilizer (90:60:30 kg NPK/fed.) for all summer and winter forage grasses in the characteristics of the contents of fresh and dry forage yield (ton/fed) during each of the two growing seasons with slight differences. The increase which was significant with successive leguminous forage grasses after forage grasses compared to cultivation of forage grasses after leguminous forage crops with the use of a high rate of complete fertilizer of (N:P:K), the results also showed the superiority of the same treatment in the parameters of the chemical content of the forage (the percentage of protein and carbohydrate content). The results concluded that it was recommended to plant leguminous forage crops after grasses forage crops with the use of a high complete fertilizer rate (90:60:30 kg NPK/fed) in order to obtain the highest productivity and chemical content of forage grasses and maximize their utilization as animal feed to reduce the forage gap.

This study was conducted at the Agricultural Research and Experiments Farm at the Faculty of Agriculture, Benha University during the seasons (2018/2019& 2019/2020). The experiment was designed with the objective of evaluating growth, yield and chemical content of Opuntia ficus-indica under three fertilization rates of (NPK), which were (30:20:10, 60:40:20 and 90:60:30 kg/fed.) in addition to the control (without fertilization), as well as three plant population densities 4200 plants/fed.(P1), 8400 plants/fed.(P2) and 16800 plants/fed.(P3). The third factor was cultivation trends of the cladodes (north to south & east to west) and their different interactions. The experimental design was split-split plot where fertilization rates were in the main plots and plant density in the sub plots, while the cultivation trends in the sub-sub. The obtained results showed that all data of the vegetative growth, yield and chemical content responded well all the three levels of fertilization and densities with the direction of cultivation of the cladodes from north to south in both seasons under study. The increase in the studied characters was significant with the high level of fertilization, which resulted in the highest productivity and high chemical content of plant cladodes and use them as non-traditional fodder to reduce the gap in the shortage of animal feed.