Title: Depth function of stored and sequestered carbon under cotton growing soils of South Gujarat in India

Authors: Suresh M. Bambhaneeya; A. Das; V.P. Usadadia

Addresses: College of Agriculture, Navsari Agricultural University, Campus Bharuch, Taluka: Makttampur, Dist: Bharuch, Gujarat-392012, India ' Soil Science Department, Navsari Agricultural University, Navsari, Gujarat, 396450, India ' Soil and Water Management Research Unit, Navsari Agricultural University, Gujarat, 396450, India

Abstract: Mean SOC stock at 0-15, 15-30, 30-60, 60-90 and 90-120 cm soil depth of irrigated profiles were 15.0, 12.6, 21.5, 19.3 and 15.3 t ha−1, respectively. Similarly, mean SOC stock at above various soil depth of rainfed profiles were 12.2, 10.0, 19.3, 15.6 and 12.7 t ha−1, respectively. SOC stored/sequestered in micro-WSA (<0.25 mm) in irrigated profiles varied widely from 1.7 to 11.7 t ha−1, while the same in rainfed profile soils varied from 1.4 to 20.5 t ha−1. Mean of irrigated profiles with respect to carbon stock associated with micro-WSA <0.25 mm was found slightly lower (5.7 t ha−1) than that of rainfed profiles (6.0 t ha−1). Thus, WSA <0.25 mm size acts as storing/sequestering C within it for long periods.

Keywords: carbon; cotton; sequestered carbon; depth function; South Gujarat; India.

DOI: 10.1504/IJGW.2019.104265

International Journal of Global Warming, 2019 Vol.19 No.4, pp.349 - 363

Received: 15 Jan 2019
Accepted: 14 Jun 2019

Published online: 19 Dec 2019 *

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