Effects of continuous application of Samurai and Zellek Super herbicides on cotton fields against weeds in the conditions of Uzbekistan

Abstract

This scientific article provides data on the effectiveness of successive application of herbicides against annual and perennial weeds in cotton fields on arable lands plowed with simple and two-sided plows. When the herbicide Samurai (1.5 l/ha) is applied separately, the annual weeds are effectively lost (86.8-90.2%), and have a weak effect on perennials. When Zellek Super (1.0 l/ha) herbicide is used separately, it has a weak effect on annuals (24.0-32.0%), effectively reducing weeds. Both perennial weeds (90.5-93.0%) and perennial weeds are effective when applied in series with Samurai (1.5 l/ha) and Zellek Super (1.0 l/ha) herbicides 88.9 -93.3% loss. Cotton yield will increase by 1.8-5.4 q/ha compared to the control option. Consecutive application of Samurai (1.5 l/ha) and Samurai (1.5 l/ha) and Zellek Super (1.0 l/ha) herbicides against annual and perennial weeds is recommended.

Effect of organic fertilizers in growing alfalfa for seed and forage

“…The experiment consists of five variants and four iterations (Table 1). During the experiment autumn was selected as a plantim time, and besides, 16kg/ha of seeds were sown in the field [2][3]8], where fertilizers [6,10] at different level were applied in the various variant (Table 1).…”

“…Also, alfalfa has a great agrotechnical and amelioration value, it is a good predecessor of most crops, that is, three years after planting alfalfa, if the lawns are well maintained, it enriches the soil with a large number of root residues, and through the budding bacteria in the roots collects about 500-800 kg of nitrogen absorbed from the air per hectare of land, improves soil structure (structure), water, physical and chemical properties, reduces soil salinity, plant diseases, in short, restores soil fertility and crops, among other things, it increases the yield of cotton . So much nitrogen in the soil artificially 3.8-4.1 tons of ammonium sulfate per hectare will be required for collection [3][4][5].…”

“…adapted varieties have been created. In particular, in addition to the Karakalpok-1, Karakalpok -15, Karakalpok-41 varieties, Toshkent-3192, Tashkent-1, suitable for almost all regions of Uzbekistan, created by the alfalfa breeding and breeding laboratory of UzGSUITI, and Tashkent-1728, Tashkent-2009 varieties are planted, Khiva in Khorezm region and Aridnaya and Boygul varieties are introduced for dry lands of the country [3,4].…”

The effect of organic fertilizer application in growing amarant (amaranthus) plant

“…70-80 percent of the territory of Karakalpakstan is saline, and amaranth is a salinity-resistant and low-cost crop that does not drink a lot of water and adapts well to complex agrarian and ecological conditions. It is aimed to grow amaranth as a profitable and nutritious crop in arid, saline and inhospitable lands [7,8]. For the first time in the conditions of the typical gray soils of Tashkent region, it is aimed to develop a scientifically based system of organic fertilizers in the cultivation of ecologically clean high-grain crops from white and red amaranth varieties of the amaranth plant in the organic farming method.…”

Effects of soil salt-leaching terms on growth, development and yield of corn in Uzbekistan

“…In saline soils, it is important to increase the resistance of field crops to salinity on the basis of the use of advanced technologies, as well as to pay special attention to soil reclamation [5][6][7]. The study shows that the salinity of the soils of the planned area, the lack of saline leaching and the presence of a seasonal salt accumulation process, the problem is solved from a scientific point of view, as well as its complexity [8].…”