A pots experiment was executed aim to evaluate the influence of Co, Ni, Fe, Mo and B at different rates(0.0, 2.5, 5.0 and 10.0 mg L -1 )with different application methods(foliar application and soil addition)on the performance of wheat plants grown on alluvial and sandy soils.Plant performance at periods of 30 and 60 days from sowing expressed in plant height, fresh and dry weights and N, P, K content in straw as well as the nutrient status of grains (N, P, K) and other characteristics at harvest stage i.e., spike length and weight and No. of tillers plant -1 were evaluated. The superior beneficial element was Ni compared to other studied elements, while Mo came in the second-order followed by Co then Fe and lately B. All studied elements, except B, caused improve plant performance which was enhanced as the added rate of these elements increased (either with foliar or soil additions).Regarding plants received B either with foliar or soil additions, the values of all studied traits significantly increased with increasing B rate from 0.0 mg L -1 to 2.5 and 5.0 mg L -1 and then significantly decrease at 10.0 mg L -1 due to appearing B toxicity. Foliar application method was most effective than soil addition method. Performance of plants grown on alluvial soil was better than that of plants grown on sandy soil. Generally, it can be concluded that Ni may have a vital role in N fixation more than other studied elements and this was reflected on wheat plant growth.

Heavy metals contamination indicates as one of the major threats to soil system. Technique of phytoremediation applied plants which are capable to transfer and accumulate metals into their tissues. In recent time it has been proposed that biofuel plants are more favorable for both remediation and utilization of polluted soil by metal. This study revealed heavy metals phytoremediation potential of guar plant in the framework of an experimental field. Plants were submitted to 10 treatments of T1:

In season of 2018, an experiment was established as field experiment to evaluate the effect of different raets of phosphorus fertilization (control, 25, 50, 75 and 100% from recommended dose, 60 kg.fed-1 calcium superphosphate SP; 15% P 2 O 5 as main plots along with presence and absence of compost town refuse as sub-plots on growth, chemical contenst and productivity of sweet pepper plant (Capcicum annum) at the Experimental Farm of Faculty of Agricultural, El-Mansoura University.The experiment tested was arrauged in an experimental split plot design with three replicates.The results showed that growth of sweet pepper plants were affected signifiently according to application of P-fertilization, addition of 75% followed by 50% which recorded the highest values of average fresh weight (g), number of fruits per plant, total fruit yield per plant (g/plant) and total yield (ton/fed) as well as DM%, an increase in photosynthetic pigments, TSS% and V.C (mg/100g) and minerals composition (N, P and K% in leaves and fruits) was also recorded, while Fe, Mn and Zn in sweet pepper fruits decreased with increasing P-fertilization comparing with the control which treatment recorded the lowest values,where the highest values were recorded with 25% of P-fertilization. Heavy metals were increased until 100% P-fertilization. All studied parameters under investigation were increased due to application of compost town refuse. So, it could be recommended for using both 75% from P-fertilization recommended dose and compost town refuse for optimum sweet pepper performance. Therefore, the organic fertilizers might help in reducing the need of high rates of P-fertilization to maintain proper P amount and also in reducing the expenses.