Response of wheat plants to application methods of micronutrients and phosphatic fertilization under different soil conditions

Abstract EN

Two field experiments were carried out at two locations of Bahtim Agricultural Research Station Farm during 2005 / 2006 season.

The first location represents non-saline soil while the second one represents saline soil.

The objective of this study is to get some applied practices concerning the effect of application methods of micronutrients (soil application of Fe, Zn and Mn with the level of 12 kg / fed in the form of sulphate and foliar one with the concentration of 0.06% in a chelated form) as well as soil application of phosphorus fertilizer with four levels i.e.

zero, 7.5, 15.0 and 22.5 kg P20s / fed.

On yield, macro and micronutrients uptake and protein percentage of wheat plants variety (Sakha 93).

The obtained results could be summarized as follows : 1- Grain, straw and biological yield as well as N, P, Fe, Zn and Mn uptake of such yields, in addition grain K uptake of wheat plants cultivated in non-saline soil were more twice than those of wheat plants grown on saline soil.

Also, K uptake of straw and biological yield under non-saline soil was nearly seven times compared to those under saline one.

However, grains protein % of wheat plants grown on both soils was nearly the same.

2- Foliar application of micronutrients achieved a significant increase in straw and biological yield of wheat plants under non-saline soil but application method of micronutrients had no significant effect on grain yield under such soil.

The vice versa was true for such yield under saline soil where soil application of micronutrients significantly resulted in the highest values.

Wheat plants grown on non-saline soil gave significantly the highest yields when fertilized with P at the level of 22.

5 kg P2O5 / fed.

While those treated with P at the rate of 15.0 kg P205 / fed.

Gave the highest yields under saline soil.

3- N, P and K uptake of different wheat plant organs were significantly the highest by the treatment of 22.

5 kg P2O5 / fed.

and soil application of micronutrients under non-saline soil whereas the level of 15.5 kg / fed.

Was the best under saline soil.

4- The highest values of Fe and Mn uptake of wheat plants grown on non-saline soil were gained when plants received Pat rate of 22.

5 kg PiOs / fed.

And soil application of micronutrients while the highest Zn uptake was achieved by the level of 15.0 kg PiOs / fed.

And foliar application of micronutrients under non-saline soil.

P application at the rate of 15.0 kg P2O5 / fed.

With soil application of micronutrients for wheat plants grown on saline soil resulted in the highest values of most micronutrients uptake in different plant yields.

5- The highest value of grain protein percentage of wheat plants grown on non-saline soil was produced when plants received 15.0 kg P2O5 / fed.

with soil application of micronutrients while, the highest value of such nutritional constituent of wheat plants grown on saline soil was gained by applying P at the same level with micronutrients added as foliar or soil application.