Cultivation of intercrops inside biodrainage (Eucalyptus camaldumlensis) vegetation under waterlogged ecosystem in Odish
Cultivation of intercrops inside biodrainage (Eucalyptus camaldumlensis) vegetation under waterlogged ecosystem in Odishwca2014-2394 Somnath Roy Chowdhury 1,*Srinivasa Brahmanand Pothula 1Ashwani Kumar 1Susanta kumar Jena 1Rajbir Singh 2Rajeeb K. Mohanty 1 1Directorate of Water Management (Indian Council of Agricultural Research), Directorate of water Management, ICAR, Bhubaneswar, 2NRM Division, ICAR, New Delhi, India
To address the problem of waterlogging in deltaic Odisha and with an objective to increase its productivity by improving drainage situations through biological drainage an attempt was made to use Eucalyptus plantation in inland waterlogged area. The performance of yield of different intercrops grown over four years under bio-drainage plantations was also assessed.
Inside Eucalyptus plantation, as intercrop the yield of paddy was 3.5 t ha-1 in 2005, 3.37 t ha-1 t ha-1 in 2006, 2.25 t ha-1 in 2007 and it was 2.12 t ha-1 in 2008. The yield of paddy outside plantation which served as control in corresponding years was 2.6, 2.65, 2.20 and 2.02 t ha-1 respectively. Eventhough at initial two years, when influence of vegetation on intercrop was conceivably minimum, inside plantation, paddy yield was significantly more. However at later two years growth of plantation did not influence yield of kharif paddy significantly in comparison to control field without vegetation. In rabi season, in first two years ground nut was cultivated as a intercrop inside Eucalyptus plantation. In 2005-06 one year after establishment of plantation (2004-05) ground nut yield was comparable to that field without Eucalyptus vegetation. However in year 2005-06 in rabi season, yield of ground nut was significantly higher in biodrained field than in control field without vegetation. Nevertheless there was marginal decrease in yield of ground nut under Eucalyptus vegetation from 1.4t/ha in 2005-06 to 1.2 t/ha in 2006-07 with growth of vegetation. In next two years due to better market price of pulses, farmer switched over to green gram in 2007-08 and to black gram in 2008-09. In both the years eventhough there was marginal increase in yield of pulses in biodrained area in comparison to area without plantation, there was significant drawdown in water level underneath biodrainage vegetation.