EL-BAGOURY, O., ALLAM, A., ABDEL-GHANY, A., ATTIA, A. (2006). IBA APPLICATION TO STEVIA STEM CUTTING: ITS PRODUCTIVITY AND QUALITY OF PLANT AND RATOON CROPS.. Egyptian Journal of Agricultural Research, 84(3), 899-922. doi: 10.21608/ejar.2006.232145
OLFAT H. EL-BAGOURY; ABDEL-WAHAB I. ALLAM; ASHRAF M. ABDEL-GHANY; AHMED E. ATTIA. "IBA APPLICATION TO STEVIA STEM CUTTING: ITS PRODUCTIVITY AND QUALITY OF PLANT AND RATOON CROPS.". Egyptian Journal of Agricultural Research, 84, 3, 2006, 899-922. doi: 10.21608/ejar.2006.232145
EL-BAGOURY, O., ALLAM, A., ABDEL-GHANY, A., ATTIA, A. (2006). 'IBA APPLICATION TO STEVIA STEM CUTTING: ITS PRODUCTIVITY AND QUALITY OF PLANT AND RATOON CROPS.', Egyptian Journal of Agricultural Research, 84(3), pp. 899-922. doi: 10.21608/ejar.2006.232145
EL-BAGOURY, O., ALLAM, A., ABDEL-GHANY, A., ATTIA, A. IBA APPLICATION TO STEVIA STEM CUTTING: ITS PRODUCTIVITY AND QUALITY OF PLANT AND RATOON CROPS.. Egyptian Journal of Agricultural Research, 2006; 84(3): 899-922. doi: 10.21608/ejar.2006.232145
IBA APPLICATION TO STEVIA STEM CUTTING: ITS PRODUCTIVITY AND QUALITY OF PLANT AND RATOON CROPS.
1Department of Agronomy, Faculty of Agriculture, Ain Shams University, Cairo, Egypt
2Sugar Crops Research Institute, Agricultural Research Center, Giza, Egypt
Abstract
Four experiments were carried out in the Agricultural Research Center Experimental Station - Giza - Egypt. Two glasshouse experiments were conducted during 2001 and 2002 seasons to investigate the effect of stern cutting position, 18A application on stern cutting and their interaction on stevia propagation. Also, two field experiments were designed to study the effect of propagation method, nitrogen fertilizer and their interaction on stevia plant yield and quality for plant crop during 2002/2003 season and ratoon crop of 2003/2004. Five cuts were obtained for each growing season. Basal cuttings were superior in alt traits giving 87.56 % for survived plants, 1,23 g for leaves fresh weight, 1.07 g for leaves dry weight, 2.31 g for stem fresh weight, 0.70 g for stem dry weight, 0.81 g for root fresh weight and 0.49g for root dry weight. The effect of IBA application on stem cuttings was significant only on cutting survival percentages which were increased with increasing IBA concentration from 0 to 500 and 1000 ppm. giving 74.44, 82.44, and 86.89 %, respectively. Maximum value of cutting survival percentage (95.33 %) was obtained from basal cuttings treated with IBA concentration of 1000 ppm. while the lowest value was obtained from tip cuttings with 0 ppm. IBA (70.00 %). Theese results showed that in both plant crop and ratoon crop, root cutting propagated plants exceeded both seed and tissue culture propagated plants for all studied characters. Meanwhile, application of 40 kg N/fecVcut gave maidmum values over both 0 (control) and 20 kg N/fed/cut. Root ailing propagated plants of the fifth cut that received 40 kg N/fed/cut gave the maximum values of leaves dry weight (1.13 t/fed for plant crop and 1.15 t/fed for ratoon crop), total leaves dry weight (4.39 t/fed/year for plant crop and 4.58 t/fed/year for ratoon crop), stevioside percentage (24.60 % for plant crop and 28.50 % for ratoon crop) and stevioside yield (279.60 kg/fed for plant crop and 327.75 kg/fed for ration crop). Total stevioside yield was 962.43 kg/fed/year for plant crop and 1035.58 kg/fed/year for ration crop.
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