National Academy of Agricultural Sciences (NAAS)
|
PRINT ISSN : 2319-7692
Online ISSN : 2319-7706 Issues : 12 per year Publisher : Excellent Publishers Email : editorijcmas@gmail.com / submit@ijcmas.com Editor-in-chief: Dr.M.Prakash Index Copernicus ICV 2018: 95.39 NAAS RATING 2020: 5.38 |
A laboratory experiment was conducted to study the changes in some hydrolysable organic forms of nitrogen in an acid soil treated with different organic manures viz., vermicompost (paddy straw and vegetable waste), farmyard manure (FYM) and biogas manure as nitrogen sources @ equivalent to 50 mg N kg-1 soil at different moisture regimes viz., 40%, 60% and 80% water holding capacity (WHC). Results revealed that irrespective of different organic manure treatments, the significantly higher amount of all the hydrolysable organic nitrogen fractions (hydrolysable NH4+, amino acid, hexosamine and serine + threonine) - N was found at 80% WHC than 40% and 60% WHC. Variable trends of these different organic fractions of N showed that these N forms were affected by moisture regimes. Greater amount of different organic forms of nitrogen were accumulated in organic matter treated system than untreated one irrespective of moisture regimes and incubation period. Among the organic manures, soil amended with vermicompost (paddy straw) showed comparatively greater accumulation of different hydrolysable organic N fractions than other organic manures. The extent of changes in different forms of organic N fractions varied with nitrogen fractions, organic matter and moisture regimes.
Citations |
 |
 |
 |
 |
