Carbon Sequestration and Productivity Potential of Coconut (Cocos nucifera L.) Hybrids and Varieties under Coastal Eco-System of Maharashtra

Abstract

Field experiment was carried out at All India Coordinated Research Project on Palms, Regional Coconut Research Station, Bhatye (DBSKKV, Dapoli), Maharashtra, (India) during the period of 2004-2016 to assess the carbon sequestration and productivity potential of twelve coconut hybrids and three varieties which was laid out in a randomized block design with three replications. Results showed that the two hybrids viz, GBGD x ECT (127.6 nuts/palm/year) and COD x LCT (108.0 nuts/palm/year) are superior with respect to nut production followed by WCT x MYD (107.6 nuts), ECT x GBGD (106.9 nuts) and the standard variety ‘Pratap’. Furthermore, the coconut orchard substantially contributed towards improving the above and below ground carbon stock. The above ground standing biomass and carbon stock recorded was the highest in the variety East Coast Tall (312 kg/plant and 27.32 t/ha, respectively) followed by hybrid WCT x GBGD (308.69 kg/plant and 27.01 t/ha, respectively) and the lowest was in hybrid MYD x ECT (138.71 kg/plant and 12.14 t/ha, respectively). The highest soil carbon stock 39.12 t/ha and 37.16 t/ha at 0-30 and 31-60 cm depth was recorded in the rhizosphere of hybrid ECT x MYD and the lowest soil carbon stock (35.52 t/ha and 34.71 t/ha) was observed in hybrid PHOT x GBGD.

Carbon Sequestration Potential in Coconut based Cropping System: A Review

“…The carbon stock was significantly the highest in East Coast Tall (27.32 t ha -1 ) followed by hybrid WCT x GBGD (27.01 t ha -1 ). The lowest carbon stock were observed in coconut hybrid MYD x ECT (Ghavale et al, 2020). This is attributed to the highest plant girth and plant height among the different hybrids and varieties.…”

Performance of coconut (Cocos nucifera L.) hybrids for yield and quality in the Utkal plain region of Odisha state, India

“…Similar findings were also reported by Nagwekar et al (2002) and Ramanandam et al (2017). Higher the girth of the palm favours more accumulation of biomass and hence increases the carbon sequestration potential of the palms (Ghavale et al, 2020). With respect to the number of functional leaves, ECT × GBGD recorded the maximum number of functional leaves on the crown (33.6) and was on par with other hybrids except for GBGD × ECT.…”

Coconut-based agroecosystem for carbon sequestration

“…To determine CO2 (tha -1 ) sequestered, is by multiplying carbon stock (tha -1 ) with 3.67 as a factor (Jackson, 1967). (Ghavale et al, 2020).…”

“…Note: Bulk density of the soil under test can be estimated by using core sampler at 0-30 and 31-60 cm depth (Ghavale et al, 2020). Carbon cycle theory of coconut-based agroecosystem as a terrestrial carbon sequester process Coconut as a tree crop or a higher plant acquires carbon dioxide (CO2) by diffusion via tiny pores (stomata) into leaves, and to areas of photosynthesis.…”