to microencapsulate the modified phenols and benefit the action of both components desired protection against brotitis and sclerotinia typical fungi in autumn winter application example 3 u2014 verification of the synergic effect of the phenol poly n acetylglucosamine complex as an enhancer of root growth field crops already underway were provided with the solution immediately after transplant the crop soil had an average level of nematode infestation melodogyne a soil was chosen with intensive continued and non rotating usage low on organic materials plot description the total area of the greenhouse was 1 000 m 2 applied dose 300 cc of chitosan solution and 300 cc of phenols solution by watering by dripping every 1 000 m 2 in 2500 liters of water per hour for every 1000 m 2 time span of application of the solution once a week applied throughout january and february 2007 the blank test was made with chitosan solution in the same proportion and applied with the same means the crop was installed and general observations were made looking into its development over time crop health flowering plant color and fruit formation were observed and also measurements were made ten weeks after transplant about the length and width of plant roots the negative or positive presence of root nodules was also observed no nodules were found at root level and periodical applications stimulated root development in plants when applications jointly include chitosan and phenol solutions in the form of phenol poly n acetylglucosamine complex of the invention an increase in plant health and root development can be observed resulting in an increase in the whole plant plant roots were larger especially lengthwise achieving improved anchoring a greater exploration ability and a greater water and nutrient absorption ability judging by the assay results.