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Nutrient Efficient Genotypes and Nutrient Management Practices in the Carbon Sequestration Potential of Cassava: a Theoretical Approach

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Title Nutrient Efficient Genotypes and Nutrient Management Practices in the Carbon Sequestration Potential of Cassava: a Theoretical Approach
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Creator S.U. Shanida Beegum, K. Susan John and J. Sreekumar
 
Subject Cassava, nutrient efficiency, low input, STBF, biofertilizers, C sequestration
 
Description Not Available
Cassava is an important food security crop of the present millennium, which is tolerant to vagaries of
weather, especially drought. An attempt has been made to assess the impact of nutrient efficient
genotypes and nutrient management practices on the C sequestration ability of the crop so as to
delineate it as a benign crop to combat climate change. For this, an experiment was conducted in
factorial CRD during 2011 under controlled condition with combinations of four genotypes (Acc. No.
766, Acc. No. 788, Acc. No. 130 and H-1687) and four nutrient management practices. The nutrient
management practices were Package of Practices recommendation (POP) (organic + major nutrients),
soil test based fertilizer (STBF) recommendation (organic + major + secondary + micronutrients),
POP + biofertilizers and low input management practice (green manuring in situ with cowpea as
organic manure source + STBF (major + secondary + micronutrients) + nutrient efficient biofertilizers).
The parameters calculated theoretically were leaf dry matter production, C content in leaf dry matter,
atmospheric CO2 absorbed for leaf dry matter production, total biomass production and soil organic C.
The genotype Acc. No.130 was significantly different with the highest leaf dry matter production, leaf
C and CO2 absorption potential. However, H-1687 sequestered the maximum C, which was on par
with Acc. No. 130 and Acc. No. 788. Though the nutrient management practices had significant
effect on all parameters, there was no significant effect on C sequestered, as the final soil organic C
was not significantly different. The Acc.No.130 under STBF recommendation resulted in significantly
highest leaf dry matter production (0.84 t ha-1), leaf C content (0.38 t ha-1) and CO2 absorption
(13.86 ppm).
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Date 2021-08-04T06:25:47Z
2021-08-04T06:25:47Z
2013-12-01
 
Type Article
 
Identifier Not Available
0378-2409
http://krishi.icar.gov.in/jspui/handle/123456789/52871
 
Language English
 
Relation Not Available;
 
Publisher Indian Society for Root Crops