Exploitation of Hevea under low temperature stress situations : studies on exploitation systems giving tapping with rests based on drop in minimum temperature
Das G
Exploitation of Hevea under low temperature stress situations : studies on exploitation systems giving tapping with rests based on drop in minimum temperature - Placrosym XIII, 1998, Coimbatore, Tamil Nadu, India. Recent Advances in Plantation Crops Research, p150-156
Low temperature being the prime cause for late dripping in non-traditional belt of northeast India. An experiment was conducted incorporating three systems viz. 1/2 S d/1, 1/2 S d/2 and 1/2 S d/3 with three periods of tapping rests based on minimum temperatures of 20-20 oC, 15-15 oC and 10-10 oC and compared with a control. Though the 1/2 S d/1 system for all the combinations showed a high annual yield, the occurrence of tapping panel dryness (TPD) was found to be relatively high. The 15-15 oC rest covers around 20 per cent of the peak yields in comparison with the continuous tapping systems. Analysis of yield showed a high significant relation between the sub-plot treatments of the temperature regimes. Mean yield was high (30.8 gm/tree/tap) for the continuous system of 1/2 S d/3 tapping system which also registered the same in the 20-20 oC rest. With a low incidence of TPD (5;), the 15-15 oC minimum temperature regime, for the 1/2 S d/2 system of tapping, in general, showed an optimum system for exploitation of latex yield during cold season under this non-traditional agroclimatic condition of latex yield during cold season under this non-traditional agroclimatic condition. Neverthless, basic knowledge of the effects of rest periods during the cold season with an optimum system of tapping, coupled with a lack of long term deleterious effects, would necessarily render exploitation methods to tackle and overcome several prevailing limitations in the region.
Exploitation
Tapping
Exploitation of Hevea under low temperature stress situations : studies on exploitation systems giving tapping with rests based on drop in minimum temperature - Placrosym XIII, 1998, Coimbatore, Tamil Nadu, India. Recent Advances in Plantation Crops Research, p150-156
Low temperature being the prime cause for late dripping in non-traditional belt of northeast India. An experiment was conducted incorporating three systems viz. 1/2 S d/1, 1/2 S d/2 and 1/2 S d/3 with three periods of tapping rests based on minimum temperatures of 20-20 oC, 15-15 oC and 10-10 oC and compared with a control. Though the 1/2 S d/1 system for all the combinations showed a high annual yield, the occurrence of tapping panel dryness (TPD) was found to be relatively high. The 15-15 oC rest covers around 20 per cent of the peak yields in comparison with the continuous tapping systems. Analysis of yield showed a high significant relation between the sub-plot treatments of the temperature regimes. Mean yield was high (30.8 gm/tree/tap) for the continuous system of 1/2 S d/3 tapping system which also registered the same in the 20-20 oC rest. With a low incidence of TPD (5;), the 15-15 oC minimum temperature regime, for the 1/2 S d/2 system of tapping, in general, showed an optimum system for exploitation of latex yield during cold season under this non-traditional agroclimatic condition of latex yield during cold season under this non-traditional agroclimatic condition. Neverthless, basic knowledge of the effects of rest periods during the cold season with an optimum system of tapping, coupled with a lack of long term deleterious effects, would necessarily render exploitation methods to tackle and overcome several prevailing limitations in the region.
Exploitation
Tapping