Research some techniques to propagate Stahlianthus thorelii Gagnep by tubers

Abstract

The research was carried out in Hop Son village, Ba Vi commune, Ba Vi district, Ha Noi city. The results show that: Survival of potting medium formulas fluctuated between 77.8% and 95.6% in the first month, 69.9% and 93.3% in the second month. Growing seedlings in potting medium formulas fluctuated from 17.4 cm to 26.5 cm in height, 2.5 to 4.3 leaves/branches, 9.8 to 14.3 cm in leaf length. Rate of poor quality plants fluctuated between 5.1% and 10.3%. Survival of multiplication methods fluctuated between 75.6% and 98.9% in the first month, 66.7% and 87.8% in the second month. Growing seedlings in potting medium formulas fluctuated from 18.3 cm to 26.1 cm in height, 2.7 to 3.7 leaves/branches, 10.3 to 14.2 cm in leaf length; Rate of poor quality plants fluctuated between 4.3% and 12.3%; multiplication coefficient was from 0.99 to 2.0 times. Survival of the shading formula fluctuated between 77.8% and 95.6% in the first month, 64.4% and 90.0% in the second month. Growing seedlings in potting medium formulas fluctuated from 15.9 cm to 26.3 cm in height, 2.5 to 3.7 leaves/branches, 10.2 to 16.3 cm in leaf length; Rate of poor quality plants fluctuated between 8.6% and 20.2%. The results of the analysis showed variance: 90% of soil mix (layer A + B) + 9% of decomposed manure + 1% of NPK; Propagation with 2 - 3 germination and 50% glaucoma is best suited for Stahlianthus thorelii Gagnep propagation.