Physiological Effects of Zeolite and Organic Fertilizers on Achillea

Present research,which carried out at new reclaimed land of desert, Egypt, during two consecutive seasons (2006/2007 and 2007/2008) to scrutinize the effect of zeolite, compost, humic acids and biofertilizers (Azotobacter chroococcum and Bacillus megaterium)whether alone or in combinations on growth characteristics, oil yield and its components and chemical composition of Yarrow plants (Achillea millefolium) herb, in comparison with recommended dose of NPK as (control). The findings undoubtedly specify the importance of zeolite which has a unique role in soil physical and chemical properties. Hence its combination with compost, biofertilizers and humic acids could replace the application of mineral fertilizers in production of Yarrow plant and varieties of other crops consequently minimize the total costs and pollution of the agricultural environment particularly in new reclaimed lands.