Effect of supplementary irrigation and bio-fertilization on wheat yield productivity under rainfed conditions

الملخص EN

Two field experiments were carried out during the two successive growing seasons (2006/2007 and 2007/2008) at El- Hammam farm, Marsa Matrouh, North Western Coast of Egypt, to study the effect of supplementary irrigation schedule depth (mm) and bio-fertilization on wheat yield productivity.

The study included two regimes of bio-fertilizers (without bio-fertilization and bio-fertilization with Microbein as Pseudomonnas sp., Azotobacter sp., Azospirillum sp.

and B.

megaterium) and four irrigation schedule depth (mm) (without supplementary irrigation(rainfed), supplementary irrigation by 60 mm/fed, supplementary irrigation by 90 mm/fed and supplementary irrigation by 120 mm/fed), all under rainfed conditions.

The obtained results could be summarized as follow: 1-The measurement yield and its components i.e., plant height, number of tillers per plant, number of tillers/m2, number of spikes/m2, spike length, number of spikeletes/spike, number of grain/spike, biological, grain and, straw yields,1000-grain weight; and tillering index were significantly increased by adding bio-fertilizer compored to the control.

2-Adding 120 mm/fed., as an irrigation depth, gave the highest values markedly for plant height, number of tillesr/plant, number of tillers/m2, number of spikes/m2 spike length, number of spikelet/spike, number of grains/spike, biological, grain, straw yields,1000-grain weight, and tillering index.

3-Concerning the effect of interaction between the two factor, bio fertilizer and supplementary irrigation with 120mm/fed gave the highest values for some characters umder study i.e; number of tillers per plant, number of tillers/m2, number of spike/m2 ,number of grain/spike, biological, grain and straw yields, and tillering index, which were significant in both seasons, while there insignificant differences for plant height and spike length, W.U.E.

and number of spikelet /spike Generally, it can be concluded that cultivation the bio-fertilized wheat c.v shaka 93 at El-Hammam farm at North Western Coast of Egybt gave high yield and yield characters under rainfall conditions or with supplementary irrigation or 120 mm/fed.

at North Western Coast of Egypt.