It can be stated that extra income from increased yield following treatment with an appropriate dose exceeds several times the costs involved. At the shrubbing stage treatment at 1,0kg/ha cupper-carbonhydrate complex proved to be the most effective. At the time of flowering doses bringing higher yields turned out to be the most profitable therefore the application of a dose of 0,5kg/ha appear to be expedient. Another positive element of these experiments is that re-cycling of cupper and carbonhydrate wastes reduces environmental pollution.





