Vol. 16 No. 2
Effect of planting time, nitrogen application and planting geometries on growth and yield of citronella (Cymbopogon winterianus Jowitt.) under sub-mountaineous region of Punjab
Author(s): S. KAUR, M. K. SAINI AND D. BAKSHI
Abstract: A field experiment was conducted at Punjab Agricultural University, Regional Research Station, Gurdaspur during two year crop cycles of 2013-14 and 2014-15 to find out the effect of date of planting, nitrogen application and planting geometries on the fresh herbage yield and essential oil yield of citronella under sub-mountaineous region of Punjab. The experiment was laid out in split-split plot design having three replications with three planting dates of citronella viz. September 30, October 15, October 30 in main plots, three nitrogen levels (50, 100 and 150 kg ha-1) in sub-plots and three planting geometries viz. 60 ×45cm, 60×30cm, 45×45cm in sub-sub plots. The highest herbage yield and essential oil yield were recorded in October 30 which was statistically at par with October 15 and these treatments obtained higher herbage yield and essential oil yield than September 30 at each harvest during both the years of crop cycles. Also, higher fresh herbage yield and essential oil yield were recorded in crop raised with 150 kg N ha-1 which was statistically at par with 100 kg N ha-1 during each harvest of citronella. Among planting geometries, the highest fresh herbage yield and essential oil yield was observed in planting geometries of 60× 30cm, which was statistically at par with 45×45 cm and proved significantly superior to 60×45cm. Further, date of planting, nitrogen application and planting geometries did not cause significant variation in the oil concentration.
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