Record Details

Seasonal dynamics of mineral N pools and N-mineralization in soils under homegarden trees in South Andaman, India

KRISHI: Publication and Data Inventory Repository

View Archive Info
 
 
Field Value
 
Title Seasonal dynamics of mineral N pools and N-mineralization in soils under homegarden trees in South Andaman, India
Not Available
 
Creator Chandra Bhushan Pandey
Ram Bahal Rai
Lalita Singh
 
Subject Equatorial humid climate Net nitrification rate NH4+-N pool NO3-N pool Palm trees Spice trees
 
Description Not Available
Agroforestry trees are now well known to
play a central role in the build up of nutrients pools
and their transformations similar to that of forest
ecosystem, however, information on the potential of
homegarden trees accumulating and releasing nitrogen (mineralization) is lacking. The present study
reports seasonal variations in pool sizes of mineral N
(NH4+-N and NO3 -N), and net N-mineralization rate
in relation to rainfall and temperature under coconut
(Cocos nucifera L.), clove (Eugenia caryophyllata
Thunb) and nutmeg (Myristica fragrans Houtt. Nees)
trees in a coconut-spice trees plantation for two
annual cycles in the equatorial humid climate of
South Andaman Island of India. Concentration of
NH4+-N was the highest during wet season (May–
October) and the lowest during post-wet season
(November–January) under all the tree species. On
the contrary, concentration of NO3 -N was the lowest
in the wet season and the highest during the post-wet
season. However, concentrations of the mineral N
were the highest under the nutmeg and the lowest
under the coconut trees. Like the pool sizes, mean
annual mineralization was the highest under the
nutmeg (561 mg kg 1 yr 1) and the lowest under the
coconut trees (393 mg kg 1 yr 1). Rate of mineralization was the highest during the post-wet season
and the lowest during the dry season (February–
April) under all the tree species. High rainfall during
the wet season, however, reduced the rate of nitrification under all the tree species. The mean annual
mineralization was logarithmically related with
rainfall amount and mean monthly temperature.
Not Available
 
Date 2019-07-24T10:28:05Z
2019-07-24T10:28:05Z
2007-01-01
 
Type Research Paper
 
Identifier Not Available
http://krishi.icar.gov.in/jspui/handle/123456789/21702
 
Language English
 
Publisher Springer