EFFECT OF ORGANIC MANURE, BIOFERTILIZER AND DIFFERENT SOIL MIXTURES ON THE PLANT GROWTH, YIELD, CHEMICAL PROPERTIES AND NUTRIENT UPTAKE OF Stevia rebaudiana leaves. | ||||
Journal of Plant Production | ||||
Article 21, Volume 30, Issue 10, October 2005, Page 6211-6220 PDF (2.93 MB) | ||||
Document Type: Original Article | ||||
DOI: 10.21608/jpp.2005.237550 | ||||
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Authors | ||||
S. S. Zarad,1; A. E. Mohamed2 | ||||
1Water Relation and Field Irrigation Dept. National Research Center, | ||||
2Soil, Water and Envir. Res. Inst. Agric. Research Center, Giza, Egypt. | ||||
Abstract | ||||
The present study was conducted during the two growing seasons 2002 and 2003 at EI-Nubaria Agric. Res. Station, Agric. Res. Center, Bihira Governorate, in order to investigate the effect of two soil mixtures (clay + sand), two organic manures (chicken + compost) and two biofertilizers (Azotobacter chroococcum + A. vinalendii) on growth, yield, chemical composition and leaf mineral contents of Stevia rebaudiana plant. Results showed that all growing media and biofertilizers enhanced the growth and chemical composition (chlorophyll mg/g f.w., Carbohydrates %, Stevioside % and leaf nutrients uptake). The medium containing clay + sand + chicken2 plus inoculation with biofertilizer produced the tallest plants, increased the number of shoots and leaves (number, area and fresh and dry weight). Also, the maximum content of total chlorophyll, total carbohydrates, Stevioside, nitrogen, phosphorus and potassium were highest from the plants cultivated in the same medium. In general, using chicken manures gave results better than using compost manure. However, the medium of clay + sand produced the shortest plants and other characters in both seasons. Based on the obtained results, it is recommended to inoculate Stevia seedlings with the biofertilizer and addition of organic manures to improve growth, yield and leaves quality, as well as to reduce the amount of the mineral fertilizers. | ||||
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