THE ECONOMIC EFFICIENCY EFFECT AND AFTEREFFECT OF FERTILIZERS AND AMELIORANTS IN TERMS OF ASKERAN REGION OF NKR
The purpose of research is to increase winter wheat yield and profit margins in view of the direct impact of fertilizers and ameliorators on potato and aftereffect on winter wheat crop rotation. Studies have shown that the direct impact of fertilizers and ameliorators on potatoes and the aftereffect on the yield of winter wheat and the amount of profit depend on the species and the totality of their application. The minimum yield and profit obtained when the system NPK fertilizer was applied as a potassium of KCl (option (N90P90K90 (KCl)). In this case, the direct effect of fertilizers increases the yield of potatoes in comparison with the control was 33.0 t / ha (21.0 %), and profit -.. 371. thousand Armenian drams. The use of bentonite or plaster on the background N90P90K90 (KCl) was also not effective, the difference in yield relative to control accordingly was 50.0 and 29.0 kg / ha, and profit -.. 593.5 and 301.0 thousand AMD. In the system of fertilizer, where potassium chloride was replaced by treated dacitе tuff or against this background as bio-fertilizer-MM was used, the maximum yield of tuber was reached, amounting to 218 and 241 kg / ha, that relative to the control was up 61ts / ha (38.8%) and 84 t / ha (53.5%), and with respect to the embodiment (N90P90K90 (KCl)) - 28 and 51 kg / ha (14,7- 26.8%). In this case, the profit amounted to 749.0 and 945.1 thousand Armenian drams. Research of the aftereffect of ameliorators fertilizers on winter wheat showed the same pattern, which was observed under the influence of fertilizers in experiments with potatoes. That is, the lower-effect was where potassium chloride was used as a fertilizer, and also when applied gypsum or bentonite were added. In these embodiments, the difference in yield relative to control-1 amounted to 4,5-6,9 kg / ha, the profit - 51,75-79,35 thousand Armenian drams.. Higher additional crop (9,7-11,9 t / ha) and additional income (111,55-136,8 thousand Armenian drams) were achieved with the use of option N90P90K90 (OTD), and the use of this background MM-bio fertilizers. In these embodiments, the additional yield and profit in relation to the control of -2 (option (N90P90K90 (KCl)) were respectively 5,2 -7,4 kg / ha, 59.8 -85.1 thousand Armenian drams. The study of action and aftereffect of fertilizers is of great agronomic and economic importance [3, 7-10]. In particular, the dose and type of fertilizer for subsequent cultures [1, 5 ,6] are determined by it. It is known that the organic phosphate, potash and ameliorators provide the higher aftereefect [2, 4-6]. In this group it is worth to mention the cultivated dacitic tuff (CCT), which is a slow-acting fertilizer that contains potassium, calcium, magnesium and phosphorus, and also helps to improve the chemical and physical properties of water and soil [3, 4]. It is known that the cultivated dacite tuff also has a high ability to absorb nutrients - 40-45 mg / eq to 100 g and the moisture absorption reaches 500% [3].