Effect of nano-fertilizer, seeding rate and nitrogen fertilization on barley yield under Sinai conditions

الملخص EN

The present study was conducted at two field experiments in a private farm at Gilbana Zone in Sinai, East Qantarah District, Ismailia Governorate, Egypt, during the two successive winter seasons 2015/2016 and 2016/2017.

This investigation aimed to find out the effect of chemical nitrogen fertilizer levels (15, 30, 45 and 60 kg N/fad.

), barley seeding rate (40, 60 and 80 kg/fad.

) and nano- fertilizer application on yield and its components of barley.

The spilt-spilt plot design as a form of the randomized complete block design with three replications was followed.

Application of nano-fertilizer appeared to produce high values in No.

of both spike lets and grains per spike as well as the heavy grains/spike, 1000- grain weight and, increased grain yield/fad.

Seeding rate of 80 kg/fad.

appeared to produce the highest value in each of number of spikes/m² and grain yield/fad.

Meanwhile, the seeding rate of 40 kg/fad.

recorded the highest value in each of No.

of both spike lets and grains per spike, weight of both grains/spike and 1000-grain.

Nitrogen fertilization was very effective on all yield characteristics, so any increase in N levels was followed by a significant increase in each of No of spike lets/spike, grains/spike and spikes/m², also increased weight of both grains/spike and 1000-grain weight and grain yield per fa.

Conclusively, these results finally recommend sowing barley with dense seeding rate of 80 kg/fad.

and application of 60 kg N/ fad.

In addition to application of nano-fertilizer to maximize grain yield /fad.

under the experimental site and other likely environmental conditions.