Nutrient management and carbon sequestration potential of rubber based intercropping system in Western Ghat region of Karnataka

Potential of Rubber-based Intercropping system

Abstract

           The present field experiment entitled ‘Role of practices on rubber and nutrient management of intercrop on growth of rubber and carbon sequestration potential under agroforestry system’ was conducted at farmers’ field of Harishi village of Soraba taluka of Shivmogga District, Karnataka, India during 2017 to 2019. The experiment was laid out in split plot design with three replication. Two practices applied on rubber were application of Farm Yard Manure (FYM) as a organic practice and NPK as inorganic practice and nine treatment consisting of different organic manures biofertilizers and NPK as inorganic fertilizer were applied on Bird’s Eye Chilli (BEC) grown as a intercrop. The results showed that application of NPK on rubber resulted in maximum mean annual increment in basal diameter (0.56 cm) and crown diameter (0.28 m) in one year old rubber and height (0.77 m), basal diameter (0.62 m) crown diameter (0.21 m) in two year old rubber. Among nine treatment of BEC, application of NPK resulted in higher growth parameters of rubber at both age levels. Interactions were non significant on all growth parameters. Age and different manures also influenced the carbon sequestration potential of the system. Hence application of NPK may be recommended for cultivation of rubber.    

KEYWORDS: Agroforestry system, practices, carbon sequestration, Bird’s Eye Chilli, rubber