| Effect of Ploughing Depth on the Growth and Yield of Heracleum candicans： a Threatened Medicinal Herb and a Less-explored Potential Crop of the Himalayan Region |
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| 作者姓名： | Hemant K. Badola Jitendra S. Butola |
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| 作者单位： | [1]G.B. Pant Institute of Himalayan Environment ＆ Development, Sikkim Unit, Pangthang, P.O. Penlong, East Sikkim 737 101, Sikkim, India [2]G.B. Pant Institute of Himalayan Environment and Development, Himachal Unit, Mohal-Kullu 175 126, H.P., India |
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| 基金项目： | Authors thank Dr. U. Dhar, the director of the institute and Core head （CBD） for providing necessary facilities and consistent support. Thanks are due to former directors, Dr. L.M.S. Palni and Dr. M. Pal for their motivation and encouragement. Financial assistance from the Department of Biotechnology, Government of India （No BT/PR 1813/SPD/11/146/99） is gratefully acknowledged. |
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| 摘 要： | This paper examines the effect of ploughing depths （A -- 60 cm, B -- 45 cm and C -- 30 cm） on the growth and yield of Heracleum candicans Wall （Apiaceae）, a threatened medicinal herb of the Himalayan region. This less-explored plant is being suggested as a potential crop for the mountain agriculture. The study was carried out in an orchard in Himachal Pradesh, India at 2500 m altitude, for two successive growth years. During the first year, all plants remained in juvenile state; in the second year, nearly 65 % plants produced flowers only under 60cm ploughing depth. Among its morphological traits, plant height, collar diameter and aboveground flesh weight were found to be strongly correlated （P 〈 0.01） with the belowground biomass during the first year （r =0.968, 0.925 and 0.973, respectively） and during the second year （r=0.945, 0.928 and 0.775, respectively）. Increase in the ploughing depth was significantly correlated （P〈0.01） with all growth parameters, including the belowground dry weight, marketable portion of the produce. The belowground biomass （commercial yield; 16.28 Qt/hec） at depth A was about 2.6 and 4.7 times higher than those recorded at depths B and C, respectively. The results clearly justify the importance of deep ploughing and this paper strongly recommends it for economically sustainable cropping.
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| 关 键 词： | 耕作深度 农作物 白体 山地农业 印度 中国 |
| 文章编号： | 1672-6316（2005）02-0173-08 |
| 收稿时间： | 2005-02-08 |
| 修稿时间： | 2005-02-28 |
Effect of ploughing depth on the growth and yield ofHeracleum candicans: a threatened medicinal herb and a less-explored potential crop of the Himalayan region |
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| Hemant K. Badola Jitendra S. Butola.Effect of ploughing depth on the growth and yield ofHeracleum candicans: a threatened medicinal herb and a less-explored potential crop of the Himalayan region[J].Journal of Mountain Science,2005,2(2):173-180. |
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| Authors: | Hemant K Badola Jitendra S Butola |
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| Institution: | (1) G.B. Pant Institute of Himalayan Environment & Development, Sikkim Unit, Pangthang, P.O. Penlong, 737 101 East Sikkim, Sikkim, India;(2) G.B. Pant Institute of Himalayan Environment and Development, Himachal Unit, 175 126 Mohal-Kullu, H.P., India |
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| Abstract: | This paper examines the effect of ploughing depths (A — 60 cm, B — 45 cm and C — 30 cm) on the growth and yield ofHeracleum candicans Wall (Apiaceae), a threatened medicinal herb of the Himalayan region. This less-explored plant is being suggested as a potential
crop for the mountain agriculture. The study was carried out in an orchard in Himachal Pradesh, India at 2500 m altitude,
for two successive growth years. During the first year, all plants remained in juvenile state; in the second year, nearly
65 % plants produced flowers only under 60 cm ploughing depth. Among its morphological traits, plant height, collar diameter
and aboveground fresh weight were found to be strongly correlated (P<0.01) with the belowground biomass during the first year (r=0.968, 0.925 and 0.973, respectively) and during the second year
(r=0.945, 0.928 and 0.775, respectively). Increase in the ploughing depth was significantly correlated (P<0.01) with all growth parameters, including the belowground dry weight, marketable portion of the produce. The belowground
biomass (commercial yield; 16.28 Qt/hec) at depth A was about 2.6 and 4.7 times higher than those recorded at depths B and
C, respectively. The results clearly justify the importance of deep ploughing and this paper strongly recommends it for economically
sustainable cropping. |
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| Keywords: | Crop Heracleum candicans medicinal herb morphological traits ploughing depth yield mountain agriculture Patrala |
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