Two field experiments were conducted during two successive winter seasons of 2008/2009 and 2009/2010 to investigate the potentialities of mixing Egyptian clover with ryegrass under bio, organic and mineral fertilization treatments and their combination to increase forage yield and quality grown under sandy soil conditions. The experiment included the combination of five mixing ratios (Egyptian clover alone, ryegrass alone, 75% Egyptian clover: 25% ryegrass, 50% Egyptian clover: 50% ryegrass and 25% Egyptian clover: 75% ryegrass) and eight fertilizer sources, which include control, organic fertilization, bio fertilization, chemical fertilizer, organic + bio fertilizer, organic + chemical fertilizer, bio + chemical fertilizer and combination of organic and chemical and bio fertilizers. The obtained results indicate the superiority of 75% E. clover: 25% ryegrass mixture fertilized by Bio + O + N in fresh and dry forage production. On the other hand, it reported the lowest dry weight of weeds g/m 2. Chemical analysis of forage plants showed that the mixture of 75% E. clover: 25% ryegrass surpassed that of other treatments yield for crude protein, ether extract and ash. The results also revealed that the highest record of DCP, crude fiber and TDNY was obtained by forage mixture of 75% E. clover: 25% ryegrass fertilized with Bio + O + N. Such higher yield of these characters has secured a balanced ratio which is really needed for ruminants ration.

Field experiment was carried out at the experimental farm of the Agricultural Research Station, National Research Centre El-Nubaria district, Egypt during the winter season of 2016/2017 to evaluate the effect of foliar application of humic acid and yeast as bio fertilizer on yield and quality of sugar beet under two method of water irrigation ( Surface and subsurface).Results showed that subsurface irrigation was more efficient than surface irrigation. The results also indicate that dual application of humic acid and yeast have promoting effect than single one and such effect was more pronounced under subsurface irrigation.