Role of micronutrients on growth and rhizome production of ginger (Zingiber officinale Rosc.) in the hilly region of Darjeeling District.

摘要

A field trial was conducted for two consecutive years during 1992 and 1993 to study the effect of micronutrients on growth and yield of ginger (Zingiber officinale Rosc). Ginger cv Gorubathan was planted as a planting material weighing 40 g each with a spacing 25 cm row to row and 20 cm plant to plant. Five micronutrients zinc (Zn) as zinc sulfate 0.3%, Iron (Fe) as ferrous sulfate 0.2%, manganese (Mn) as manganese sulfate 0.2%, copper (Cu) as copper sulfate 0.2%, Boron (B) as boric acid powder 0.2% and their combinations were applied for two times during 90 and 120 days after planting. The results revealed that combined spray of Zn (0.3%), Fe (0.2%), Mn (0.2%), Cu (0.2%) and B (0.2%) for two times during 90 and 120 days after planting of rhizome resulted maximum plant height (77.81 cm), produced maximum number of pseudostem per clump (4.49), maximum number of leaves (59.52 per clump), highest leaf length (26.92 cm), highest leaf breadth (2.82 cm) and maximum yield (54.73 tonnes per hectare) compared to other treatments and control.