Agriculture. Complex liquid fertilizers (CLF) "Multibar" are designed for cultivating grain crops, vegetables and cucurbitaceous.

It is planned to develop production technology of complex liquid fertilizers "Multibar". CLF have a number of advantages relative to known multicomponent fertilizers: 

• at pouring from one container to another and filling mechanisms for fertilizers application into the soil the losses of nutrients are minimized; 
• at operating with CLF adverse weather conditions do not influence considerably, as in the case of solid fertilizers; 
• microelements, weed and pest-killer chemicals, growth-promoting substances may be introduced in the composition of CLF; 
• CLF are not inflammeble, toxic, explosive and have simple safety regulations; 
• obvious advantge of CLF is associated with packing – no need to use packets. Application of CLF enables to mechanize completely the processes of loading, unloading, dilution with water and introduction into soil. Manual work is excluded completely, resulting in significant reducing in application expenses. Economic calculations have shown that application expenses at CLF introduction into soil are low by a factor of 2-2.6 as compared to solid fertilizers, and their efficiency (profitability) changes from 27% (winter wheat) to 165% (sugar beet); 
• progressive drop method of the application of required substances into the soil may be used in the fields and greenhouses; 
• CLF may be produced as process solutions or concentrates for immediate application. It is confirmed scientifically that the main elements of process solutions are nitrogen (N), phosphorus (P) and potassium (K) in the ratio of 10:10:10. Ammonium nitratre, urea, orthophosphoric acid and its salts, different salts of copper, molybdenum, manganese, zinc, boron, magnesium, calcium, selenium, as well as promotoring agents facilitating transportation of fertilizers’ active components into plants, developed (“knowhow”) in the Institute of Chemical Physics of NAS RA are used for preparation of CLF. Concentrates usually represent transparent solutions or suspensions with 55-60 mass.% of active components; 
• composition of CLF is selected taking into account features of the soil (composition, structure, humidity and other parameters). Besides, the sort of a fertilizing plant, weather conditions, season (spring, summer, autumn), requirements and suggestions of users are considered

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It is offered to conduct negotiations concerning cooperation in the case of the technology implementation.

Levon Nersesyan, Team Leader of A.Nalbandyan Institute of Chemical Physics of NAS RA 
E-mail: levon {[ at ]} ichph.sci.am
Tel.: (+374 60) 623583