Effect of some biofertilizers ( pgpr, biosoal and compost tea)on growth ,yield, fiber quality and yarn properties of egyptian cotton.(promising hybrid 10229xg86).

Experiments of this study were conducted at the Faculty of Agriculture, Moshtohor, Benha University Fiber and yarrrn properties were conducted at cotton research institute, Agric. Res. Center, Giza Egypt during 2013 and 2014 seasons  The effect  of applying biofertilizers with the recommended rates as soil addition With the plant growth promoting Rizobactria(PGPR)and Biosoal as well as foliar spray with  PGPR ,biosoal and compost tea.were studied Also, the combinations of PGPR+ biosoal; PGPR+ compost tea and PGPR + biosoal+ compost tea. Different applied treatments were added through plant growth at,45,65,85and 105 days after sowingduring 2013 and 2014 seasons. At 125 days after sowing i.e., 20 days after the last addition and /or spray vegetative growth,yield, chemical analysis, some yield components and fiber& yarn properties were estimated.The most important results can be summarized as follows:
Different applied treatments increased growth characteristics i.e., plant height, number and total area of leaves/ plant, number of vegetative and fruiting branches/plant and total chlorophyll during bothgrowing seasons. The most effective treatments upon growth characteristics were the combination of PGPR+ Biosoal+Compost Tea. Also, yield and yield components i.e. bolls weight/plant, seed cotton yield (g) /plant and (kantar)/ feedan,  lint weight( g) /plant, lint % and seed yield index as well.In addition,the treatment of mixed bacteria strains when applied in form of foliar spray PGPR+Biosoal +compost tea increased  mineral nutrients i.e.N, P, K,Ca, Mg, Fe, Zn and Cu contents in  Egyptian cotton leaf at 125 days after sowing during 2013 &2014 seasons. Furthermore, fiber physical and mechanical properties of yarn under different applied treatments were increased.