A field experiment was carried out in one of the agricultural fields of Muqdadiya region during the season 2022-2023 to study the role of spraying with nanofertilizer called Super Micro Plus at levels (0, 1, 2 and 3) g/L as a first factor and with spraying times (the beginning of the tillering stage, the beginning of the elongation stage, and the beginning of the maturity stage) as a second factor in some growth characteristics and stems yield of sugarcane, variety Cp 89. The experiment was carried out according to a completely randomized blocks design with three replications, and the data were analyzed statistically, the results showed the following: 1. The use of nanofertilizer at a level of 2 g/L resulted in a significant increase in the number of total stems, stem height, stem diameter, leaf area and number of green leaves, as they reached 57.8, 160.7 cm, 30.7 mm, 1126.1 cm2/plant and 10.1 leaf/plant respectively. It also caused an increase in the mean of stems yield, reaching 61.5 tons/ha, with an increase of 56.1 %. 2. The spraying of nanofertilizer at the beginning of the tillering stage resulted in a significant increase in the number of total stems, stem diameter, leaf area and number of green leaves, reached to 61.6, 31.8 mm, 1127.9 cm2/plant and 9.9 leaf/plant respectively, and a decrease in the mean of stem height, as it reached to 155 cm. It also caused an increase in the mean of stems yield as it reached 53.6 tons/ha. 3. Spraying the plants with nanofertilizer at the level of 2 g / L at the beginning of the tillering stage resulted in highest increase in the mean number of total stems, stem diameter, leaf area and number of green leaves, reached to 69.4, 33.1 mm, 1187.5 cm2/plant and 11.7 leaves / plant respectively. And a decrease in mean of stem height, as it reached 153 cm. It also achieved the highest significant increase in the mean of stems yield, reached to 66 tons / ha, an increase of 67.5 %.

The experiment was carried out according to a completely randomized block design with three replications, and the data were analyzed statistically, and the results showed the following; (1) The use of nanofertilizer at the level of 2 g.l ̄¹ resulted in a significant increase in all the studied characteristics represented in number of milling stems, the percentage of sucrose, the percentage of total dissolved solids, the percentage of juice purity, the stems yield , and the sugar yield, as it reached 54.9 stems.m ̄¹, 15.4%, 17.5%, 88.04%, and 61.5 tons.ha ̄ ¹ and 9.34 tons.ha ̄¹ respectively; (2) The spraying of nanofertilizer at the beginning of the tillering stage resulted in a significant increase in most of the studied characteristics represented in mean number of milling stems, the percentage of sucrose, the percentage of total dissolved solids, the stems yield, and the sugar yield, reaching 57.1 stems.m ̄¹ , 14.1%, 17.2%, and 53.6 tons.ha ̄¹ and 7.63 tons.ha  ̄ ¹ respectively .While spraying the nanofertilizer at the beginning of the elongation stage showed a significant increase in juice purity amounted to 84.68%, Compared to the fertilizer application at the beginning of the tillering stage and the beginning of the maturity stage, which recorded 81.85 and 83.51%, respectively; (3) Spraying the plants with nanofertilizer at the level of 2 g.l ̄¹ at the beginning of the tillering stage resulted in achieving the highest increase in each of the number of milling stems, the percentage of sucrose, the percentage of total dissolved solids, the percentage of juice purity, the stems yield, and the sugar yield, as it reached 62 stems.m ̄¹ ,16.3%, 18.0%, 90.50%, and 66.0 tons.ha ̄ ¹ and 10.30 tons.ha ̄ ¹ respectively.

The low average cotton yield per unit area in Iraq during the long growth season invites us to look for possible means to increase the yield by looking for new ideas in agriculture to improve production. Important results were obtained through two field experiments applied to the cotton crop during the period from January 1 to October 16, 2017, in the new Baquba nursery affiliated to the Directorate of Agriculture in Diyala Governorate within the cotton development project in Iraq. There have been a number of attempts by a number of Iraqi researchers - over the previous years - focused on how to raise the yield of cotton fibers by the unit area and also during the season, especially if there is a desire of farmers to use the same land to planting a winter crop, but we did not see practical achievements in this regard, which led us to use modern ideas to improve crop production and achieve planting winter crop after it. Planting the seeds inside the greenhouse for the purpose of producing seedlings and then transferred to the field on time rather than planting seeds directly in the field, Has had a positive effect on exceeding temperatures unsuitable for seed germination, growth and early access to the first harvest. It was positively reflected in increase hair cotton yield, with an average of 2.24, 2.69 and 2.81 tons. ha−1 for varieties Koker, Lashata and Ashore, compared to the traditional cultivation method, which recorded 0.63, 0.68 and 0.80 tons. h−1, with an increase of 255.6, 295.6 and 251.3% for the three varieties, respectively and the increase in the number of harvesters during the season to four harvesters (July, August, September and October) compared to the traditional method, which registered only three during the season (August, September and October) as well as the possibility of relying on three harvests when planting with the seedling technique (July, August and September) while achieving the cultivation of a winter crop after the cotton crop, such as wheat, to provide sufficient time for soil service operations such as plowing, softening, leveling, weed control and others. We conclude from the current study that use of the transplanting technique has preserved three harvests with a high yield that appeared clearly since the first harvest, as the date of the third harvest was on September 13, and therefore the aim of cultivating a winter crop after cotton has been achieved to provide sufficient time to conduct soil servicing operations for the crop.