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Home / Issues / № 3, 2017

Agricultural sciences

NITROGEN BALANCE OF CARBOMIDE-FORMALDEGIDE FERTILIZERS IN DIFFERENT SOIL CONDITIONS
Abzalov A.A., Turakulov A.А., Abzalova N.A.

The researches indicate that because of low leaching in ground water and gas-formed loss using of CFF for the plants, we are studying such as medicine plants (сynara scolymus L, solanum laciniatum, calendula officinalis L, valeriana officinalis L, leuzea carthamoides) and technical plants (cotton plant and etc.) in greyish land  soil and little - salty light greyish land relative to typical greyish land, seemed to be more effective than urea. At present nitrogenetic fertilizers (urea and ammonium saltpetre) that are being applied in wide extent for medicine plants and agricultural plants, have several defects. For example, ammonium fertilizers change into nitrates form during some time (5-7 days) after applying on soil. In order to reduce environmental pollution after remains of nitrogen manure and to increase efficiency of nitrogen fertilizers, efficiency of using slow-forcing CFF has been tested on cotton plant and some medicine plants.

Key words: ammides, ammonium nitrate, nitrogenetic carbomide-formaldegide fertilizers (CFF), fertilizers, urea formaldegide fertilizers, nitrates, denitrification, humus, vegetation practices, urea.

The object and methods of research: practices have been carried out in special prepared lysimetric conditions, vegetation containers and field conditions. Vegetation containers and lysimetrics were filled with typical greyish land soil, little-salty light greyish land soil and meadow soil. The area of each lysimetrics was equal to 1 m². Soil for filling the lysimetrics and vegetation containers was taken from the land with genetic layers where field practices had been conducted. Ground water supply level in lysimetrics was almost similar to natural condition. After certain time lysimetric water was accumulated and different nitrogen combination (NH3, NO3) content was determined. Besides, nitrogen content and quantity of its gas-formed loss which remained in soil and were used by plant, were studied. Total nitrogen content was identified according to Keyldalyu - Iodelbauero, nitrates were determined as per Granvald - Jlyaju. Nitrogen fertilizer was used by 200 kgs per ha for cotton plant practices. Enriching of nitrogen fertilizer with stable nitrogen isotop 15N made 20%.

Results of research: Research results state that in typical greyish soil condition in applying different forms of nitrogen fertilizers, quantity of using of nitrogen for cotton plant made 28-41 (in % relaive to the applied to soil). In applying urea quantity of the current indication made 4,5%, and as for CFF - 28-31%. In the second year of practice quantity of urea nitrogen using for cotton plant made 9%, as for CFF or urea with CFF - 20-22%. Using of urea nitrogen for two years for cotton plant made 49% and in applying CFF and CFF with urea - 48,0-53,3%. Subsequently, quantity of nitrogen using for cotton plant was almost similar to urea and CFF. It is should be noted that in CFF using content of nitrogen remained in soil was two times more than in using urea. In the second year of practice the quantity of using of CFF nitrogen was more than using urea. In general, nitrogen loss in CFF using to soil was less than in urea using. Little - salty light greyish soil differs from typical greyish soil as per balance. In the very soil cotton plant used more CFF than urea in the first and second year of practice. So, using of urea nitrogen for cotton plant for two years made 33,5% and as for CFF (70% from annual norm) with urea (30%) this quantity reached to 49,1 - 52,4%. This means, the quantity of nitrogen used by cotton plant made 18,8% more when applied  CFF with urea comparing to using of only urea to soil. In the second year of practice quantity of nitrogen remained in soil almost didn't change notwithstanding different soil. In accordance with this, intensity of nitrification process went slow in using CFF to soil, quantity of nitrogen of this fertilizer used by cotton plant was more than in using urea. Almost the same results and data were obtained in meadow soil. It is to be indicated that analogical results have been achieved and medicine plants have been studied thoroughly (solanum laciniatum , calendula officinalis L, , valeriana officinalis L, Leuzea carthamoides and etc).

Conclusions: In typical grey soil condition using of nitrogen by cotton plant, artichoke, medical valerian, solanum laciniatum , calendula officinalis L, Leuzea carthamoides while using urea and CFF separately, were similar to each other. When using urea and CFF together (70% in CFF view before planting and flowering, and 30% in urea view in butanization phase) using of nitrogen fertilizer to cotton plant, artichoke, valeriana officinalis L, solanum laciniatum , calendula officinalis L, Leuzea carthamoides was more than using them in soil separately.



Bibliographic reference

Abzalov A.A., Turakulov A.А., Abzalova N.A. NITROGEN BALANCE OF CARBOMIDE-FORMALDEGIDE FERTILIZERS IN DIFFERENT SOIL CONDITIONS. International Journal Of Applied And Fundamental Research. – 2017. – № 3 –
URL: www.science-sd.com/471-25262 (06.04.2020).