An Update of agromanagement in rubber cultivation
Material type:
TextPublication details: Global Competitiveness of Indian Rubber Plantation Industry : Rubber Planters Conference, India 2002. (Eds. C. Kuruvilla Jacob). Rubber Research Institute of India, Kottayam, Kerala, pp.65-76.Subject(s): Summary: Rubber(Hevea brasiliensis) is a tree crop with a gestation period around seven years. Adoption of appropriate crop management practices is necessary for achieving uniform stand of trees ready for tapping in the minimum possible period. The production potential of high yielding clones can be realized only through scientific field management. The packages developed over the years and improvements made through continuous research are being highlighted in this paper. Healthy three whorl polybag plants are recognized as ideal planting material for the successful establishment of a uniform stand of trees. An initial planting density of 450-500 trees per hectare is generally agreeable for varying situations. For economic reasons, it will be advantageous for smallholdings to have a high stand when family labour is utilized for tapping. Adoption of appropriate soil conservation measures in rubber plantations is essential due to the undulating terrain and high intensity of rainfall. Planting on contour terraces, construction of silt pits per hectare in a mature rubber plantation is beneficial in conserving soil and improving growth and yield. The fertilizer requirement of rubber is much less compared to other crops due to reasons such as nitrogen fixation and recycling of plant nutrients through legume cover, annual addition of rubber leaf litter and minimum removal of nutrients through latex. The Rubber Board has formulated general fertilizer recommendation for various growth stages, which farmers can easily adopt. Site-specific descriminatory fertilizer recommendations based on soil and leaf analyses can be availed from the RRII and its regional laboratories. The weeds in the plant basins/planting strips (terraces) can be pulled out or removed by scraping or destroyed by herbicide application during the initial two years. During subsequent years, weed growth can be restricted through periodic slashing. The use of herbicides is advantageous to address situations of labour shortage. An integrated approach consisting maintenance of legume cover, manual weeding and use of herbicides is considered most economical and ecofriendly. Various formulations of glyphosate, paraquat and 2,4-D have been found effective for weed control in rubber plantations. The space available in a plantation during the initial two to three years can be utilized for growing various intercrops for generating income to the grower. The choice of intercrops should be based on topography of land, marketability of the produce, market price and domestic requirement. Intercropping should not be attempted on steep slopes where only legume cover should be established. Banana, pineapple, ginger, turmeric, vegetables and tuber crops like amorphophallus, colocasia, dioscorea and some medicinal plants are popular intercrops. The experiments conducted in mature rubber plantations indicated only poor yield for coffee, cocoa and pepper due to poor flowering and fruit set consequent to inadequate sunlight availability. In the traditional belt, it is observed that irrigation given during summer months through drip or basin system could reduce the immaturity period by six to twelve months. However, the scope for irrigation is limited due to poor availability of water and additional investments required. The use of machines for dugging planting pits and weeding has been found useful in situations of inadequate labour availability and when these operations have to be completed in a short time.
| Item type | Current library | Status | |
|---|---|---|---|
Journals
|
RRII Library Soils and agonomy | Journals |
Rubber(Hevea brasiliensis) is a tree crop with a gestation period around seven years. Adoption of appropriate crop management practices is necessary for achieving uniform stand of trees ready for tapping in the minimum possible period. The production potential of high yielding clones can be realized only through scientific field management. The packages developed over the years and improvements made through continuous research are being highlighted in this paper. Healthy three whorl polybag plants are recognized as ideal planting material for the successful establishment of a uniform stand of trees. An initial planting density of 450-500 trees per hectare is generally agreeable for varying situations. For economic reasons, it will be advantageous for smallholdings to have a high stand when family labour is utilized for tapping. Adoption of appropriate soil conservation measures in rubber plantations is essential due to the undulating terrain and high intensity of rainfall. Planting on contour terraces, construction of silt pits per hectare in a mature rubber plantation is beneficial in conserving soil and improving growth and yield. The fertilizer requirement of rubber is much less compared to other crops due to reasons such as nitrogen fixation and recycling of plant nutrients through legume cover, annual addition of rubber leaf litter and minimum removal of nutrients through latex. The Rubber Board has formulated general fertilizer recommendation for various growth stages, which farmers can easily adopt. Site-specific descriminatory fertilizer recommendations based on soil and leaf analyses can be availed from the RRII and its regional laboratories. The weeds in the plant basins/planting strips (terraces) can be pulled out or removed by scraping or destroyed by herbicide application during the initial two years. During subsequent years, weed growth can be restricted through periodic slashing. The use of herbicides is advantageous to address situations of labour shortage. An integrated approach consisting maintenance of legume cover, manual weeding and use of herbicides is considered most economical and ecofriendly. Various formulations of glyphosate, paraquat and 2,4-D have been found effective for weed control in rubber plantations. The space available in a plantation during the initial two to three years can be utilized for growing various intercrops for generating income to the grower. The choice of intercrops should be based on topography of land, marketability of the produce, market price and domestic requirement. Intercropping should not be attempted on steep slopes where only legume cover should be established. Banana, pineapple, ginger, turmeric, vegetables and tuber crops like amorphophallus, colocasia, dioscorea and some medicinal plants are popular intercrops. The experiments conducted in mature rubber plantations indicated only poor yield for coffee, cocoa and pepper due to poor flowering and fruit set consequent to inadequate sunlight availability. In the traditional belt, it is observed that irrigation given during summer months through drip or basin system could reduce the immaturity period by six to twelve months. However, the scope for irrigation is limited due to poor availability of water and additional investments required. The use of machines for dugging planting pits and weeding has been found useful in situations of inadequate labour availability and when these operations have to be completed in a short time.
There are no comments on this title.