【摘 要】
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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 threat
【机 构】
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G.B. Pant Institute of Himalayan Environment & Development,G.B. Pant Institute of Himalayan Environm
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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 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
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