An experiment was carried out at the Glass House at the Faculty of Agriculture, Anbar University for the 2016-2017 season. Where the addition of nano-iron and dry yeast extract to evaluate the response of maize productivity to five levels of nano-iron, which is 0, 25,50, 75 and 100 mg, were sprayed on the leaves, and the yeast extract at three levels 0, 100 and 150 grams per liter spray on the leaves. The results showed the superiority of the treatments that were sprayed with nanoparticles with the highest rate of chlorophyll, the seed protein ratio and the percentage of seed oil. Significant levels were also recorded when spraying the plants with dry yeast extract. The interactions of 100 mg of nanotube and 60 g / l dry yeast extract characterized by the highest rate of chlorophyll, the oil content in the seeds (%) and the protein rate in the seeds (%) compared to other transactions.

The experiment was carried out in one of the private palm orchards infested with the lesser date moth (Batrachedra amydraula Meyrick) in the village of AL-Bualay AL-Jassim 8 km northwest of Ramadi during the season 2020, with the aim of studying the influence of bunches thinning and pesticides on some of physical and chemical and productivity and rate of infection with lesser date moth on date palm. The results revealed that the thinning factors C1(6 bunch) and C2 (8 bunch) date palm-1 reduce rate of infestation of the lesser date moth after 14 days of spraying pesticides at rates of 20.80 and 23.10% compared to the control treatment (28.30%). The pesticide A2 (Matrixine plus) outperformed in reducing the rate of infection after 7, 14, 21 days with an average of 6.34, 16.10, and 26.10% respectively, these rates were increased in the control treatment (11.88 and 31.30 and 61.90%) respectively. On the other hand, treatments 6 and 8 bunch outperformed the control treatment in terms of fruit setting, increased ripening rate and reduced khalal ratio, with rates of (76.33 and 73.78%), (50.00 and 50.11%), and (50.00 and 50.00%) respectively. The results confirmed that there were no significant differences between the thinning treatments on the total yield between treatments and their interactions. When using the pesticide A2, it caused a significant increase in the rate of ripening and a decrease in the percentage of khalal with rates of 56.22 and 43.78% respectively. The results indicate outperformed of the thinning treatment C2 and pesticide treatment A2 in phosphor, nitrogen, and potassium percent in fruits with an average of (0.0806,0.0820%), (0.4022,0.3989%), and (0.6856,0.6933%) respectively. These values decreased in the control treatment by rates of (0.0766 and 0.0750%), (0.3767 and 0.3767%), and (0.6422 and 0.6356%) respectively.