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Simulating soil organic carbon in high clay soils in India: DNDC model experience

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Title Simulating soil organic carbon in high clay soils in India: DNDC model experience
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Creator Telpande, B., Bhattacharyya, T., Wankhede, D.M., Jha, P., Tiwary, P. , Chandran, P. and Ray, S.K.
 
Subject LTFE, DNDC model, Organic Carbon
 
Description Not Available
Performance of DNDC model was evaluated using
a long term fertilizer experiment (LTFE) datasets at Akola,
Maharashtra. The LTFE site represents a semi-arid climate
with a mean annual rainfall of 793 mm. Sorghum and wheat
crops were cultivated for nine years (1988-1997). The model
was parameterized using crop data from black soil region
and used to estimate the total organic carbon (TOC) under
different nutrient management treatments. It underestimates
the total organic carbon in all the treatments in two different
ways such as for control (T1) and 50% NPK (T2), it performs
less than the measured values in the beginning of the
experiment, while for 100% NPK+FYM (T13) and only
FYM (T14) treatments the underestimation is found at the
end of the experiment. Modelled data analysis using
statistical parameters showed 50% NPK treatment was
satisfactory. An effort is made to find out the relative
performance of three models namely RothC, Century and
DNDC using the same LTFE site. By far, RothC model was
found to be near to the values of measured TOC as compared
to other.
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Date 2020-05-26T10:22:45Z
2020-05-26T10:22:45Z
2013-10-31
 
Type Research Paper
 
Identifier Telpande, B., Bhattacharyya, T., Wankhede, D.M., Jha, P., Tiwary, P. , Chandran, P. and Ray, S.K. (2013) Simulating soil organic carbon in high clay soils in India : DNDC model experience, Climate Change and Environmental Sustainability, October 2013, 1(2): 118-126
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http://krishi.icar.gov.in/jspui/handle/123456789/36302
 
Language English
 
Relation Not Available;
 
Publisher Indian Journal