Journal of Environmental Biology

Effect of long term organic manure application on soil properties, carbon sequestration, soil - plant carbon stock and productivity under two vegetable production systems in Himachal Pradesh

D.K. Parmar*, D.R. Thakur, R.S. Jamwal and Arpana

CSK Himachal Pradesh Krishi Vishvavidayalaya, Hill Agricutlure Research & Extension Centre, Bajaura-175 125, India

*Corresponding Author E-mail : dkpharec@yahoo.co.in

Publication Data

Paper received:

10 November 2014

Revised received:

04 February 2015

Re-revised received:

01 April 2015

Accepted:

10 August 2015

Abstract

Changes in soil properties, carbon sequestration, carbon stock and productivity under two vegetable production systems supplied with five organic nutrient sources were evaluated after five cropping cycles. The results showed that cropping systems did not influence soil bulk density, carbon biomass, bacteria, fungi, enzyme activity, Fe, Mn, and Cu. However,? maximum soil organic carbon (0.50%), N (166.6 kg ha ^-1), P (41.3 kg ha^-1), K (162.2 kg ha^-1), Zn (1.59 mg kg^-1), soil carbon stock (11.3 t ha^-1 yr^-1), plant carbon stock (54.3 t ha^-1 yr^-1), carbon sequestration (2.8 t ha^-1 yr^-1), total carbon stock (65.6 t ha^-1 yr^-1), actenomycetes (33.2 105 cfu g^-1) , marketable yield (6.6 t ha^-1), crop biomass (5.8 t ha^-1) and leaf litter (0.40 t ha^-1) was recorded in tomato-cauliflower-radish/pea as compared to capsicum/cabbage-coriander-spinich/pea... All the measured variables were significantly influenced among nutrient sources. Maximum? soil organic carbon (0.48%), bulk density (1.419 g cm-3), N (189.3 kg ha^-1), P (54.8 kg ha^-1), K (193.8 kg ha^-1), Fe (64.6 mg kg^-1), Mn (29.0 mg kg^-1), Zn (1.83 mg kg^-1), Cu (1.35 mg kg^-1), soil carbon stock (12.5 t ha^-1 yr^-1), plant carbon stock (65.8 t ha^-1 yr^-1), carbon sequestration (3.0 t ha^-1 yr^-1), total carbon stock (78.3 t ha^-1 yr^-1), bacteria (84.0 106 cfu g^-1), fungi (72.0 105 cfu? g^-1),? actenomycetes (55.5 105 cfu g^-1),? microbial carbon biomass (1741.2 ?g? g ^-1), dehydrogenase enzyme (0.023 ?g TPF g^-1) and acid phosphatase enzyme (21.1 ? p-nitrophenol g^-1), marketable yield (7.9 t ha^-1), crop biomass (7.0 t ha^-1), litter fall (0.54 t ha^-1) were observed in treatment? receiving 50% N supplemented with farmyard manure enriched rock phosphate and 50% N supplemented with vermicompost. The current study indicates that long term use of farmyard manure and vermicompost showed better yield, soil quality and greater amount of carbon stock and carbon sequestration under tomato-cauliflower-radish/pea cropping pattern.   

 Key words

Carbon sequestration, Carbon stock, Organic manure, Productivity, Soil properties, Vegetable production system

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