21. Controlling mainly include mechanical, biological and chemical methods . 22. Use of microorganisms to degrade it has seen faster and better results than the chemical method . 23. SEKEM then created a company to process organic cotton using mechanical rather than chemical methods , NatureTex. 24. Mechanical and chemical methods have been applied, but their costliness has militated against their ready adoption. 25. Pulp can be manufactured using mechanical, semi-chemical or fully chemical methods ( kraft and sulfite processes ). 26. The same chemical methods can be used for this, but the hair is not wrapped around rods. 27. There are also several physico-chemical methods for producing hydrogen; most of these methods require electrolysis of water. 28. Chemical methods can be used to help the tree maintain health and avoid progress of the disease.29. In an agricultural setting, the pathogen can be controlled using chemical methods , genetic resistance, and careful farming methods. 30. In 1992, it was studied to find the chemical composition of the iris, using spectroscopic and chemical methods .
