Abstract

It has become necessary to use various techniques in agriculture including nanotechnology since it is gaining interest as one of the promising approaches to increase crop production. It possesses all the characteristics needed to be used in agriculture such as high solubility, good efficiency and can be used in small quantities. So, this directly increases the efficiency of fertilizers and reduces the cost compared to conventional fertilizers. An investigation was carried out in Babylon in the year 2017 using six fertilizer combinations which were as follows: (traditional chemical fertilizer according to recommended quantity is 600 kg/ha solo, add chemical fertilizer quarter recommended dosage+fertilizer nano, chemical fertilizer half recommended dosage+nano-fertilizer, add three-quarter chemical fertilizer dosage of recommended quantity+nano-fertilizer, add full chemical fertilizer recommended dosage+nano-fertilizer, add individual nano-fertilizers). Three planting dates such as 1st September, 10th September and 20th September were checked. The fertilizer combination surpassed the full recommended dosage+nano-fertilizer in the paper area, percentage of dry matter of vegetative total, total number of tubers per plant, total yield, starch percentage and the superiority of the treatment in the third planting date in terms of total number of tubers per plant, total yield and dissolved solids. The ‘first planting’ date missed in the rate of tuber weight exceeded the overlap between the combination fertilizer i. e. entire recommended dosage+nano-fertilizer. The third planting time excelled in paper space, total quotient and the overlap between the combination fertilizer i. e. entire recommended dosage+nano-fertilizer, whereas in the second planting date it occurred in the percentage of the dry matter of vegetative total and starch percentage.