Distribution of Forms of Sulphur and Their Relationships with Soil Attributes in Tea Growing Soils under Different Agro-climatic Zones of Northeastern India

作     者：Ranjan Bera Antara Seal A.K.Chatterjee Pradip Bhattacharyya 

作者机构：Inhana Organic Research Foundation168 Jodhpur ParkKolkata-700068India Department of Soil ScienceVisva Bharati UniversitySantiniketanWest Bengal 731236India Agricultural and Ecological Research UnitIndian Statistical InstituteNew BargandaGiridih 815301JharkhandIndia 

出 版 物：《NASS Journal of Agricultural Sciences》 (NASS农业科学杂志（英文）)

年 卷 期：2019年第1卷第1期

页      面：1-6页

学科分类：09[农学] 0903[农学-农业资源与环境] 090301[农学-土壤学] 

主　　题：Tea soils Sulphur forms C:N ratio C:S ratio N:S ratio C:N:S ratio 

摘      要：Distribution of different forms of sulphur(S)and carbon-nitrogen-sulphur relationships were studied in surface and subsurface soils of some tea growing areas of Northeastern *** soils were strongly acidic in reaction(pH-4.0 to 5.5),low to very high in organic carbon(4 to 54 g kg^-1),with cation exchange capacity(8.8 to 19.2 cmol(p+)kg^-1)and base saturation(50 to 77%).Organic S mostly contributed to the total-sulphur(62 to 77%)followed by Non sulphate S(28.8 to 37.2%)and sulphate S(0.7 to 1.4%).Except sulphate S,other forms of sulphur showed significant positive correlation among themselves as well as with organic carbon and total *** C:N,C:S,N:S and C:N:S ratio varied from 8.2 to 10.0,6.18 to 71.57,0.62 to 7.26 and 100:10.1:1.4 to 100:12.2:16.2 *** C:N:S ratios in all the surface and sub-surface soils indicated that the major portion of nitrogen and sulphur in tea growing soils of Northeastern India is locked up in organic combination which might pose as a potential threat towards tea plantation if application of sulphur is continuously ignored.