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Release and Uptake of Potassium and Sodium with Fly Ash Application in Rice on Reclaimed Alkali Soil

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Title Release and Uptake of Potassium and Sodium with Fly Ash Application in Rice on Reclaimed Alkali Soil
 
Creator K Lal,
R Chhabra,
AD Mongia,
RL Meena,
R.K. Yadav
 
Subject Rice,
wheat,
fly ash,
exchangeable K,
non-exchangeable, K, Na,
reclaimed alkali soil
release behaviour,
 
Description Not Available
The effects of fly ash applied @ 0, 2.5, 5.0, 7.5 and 10.0 t ha-1 to rice were studied rice-wheat cropping
system on reclaimed Typic Natrustalf. Besides crop yields and K and Na contents in ———, release pattern
of exchangeable, non-exchangeable and total K and Na were also monitored. Graded levels of fly ash
increased grain and straw yield of rice but the overall effects were non-significant. Fly ash did not influence
K content but significantly reduced Na content in rice. The residual effects of fly ash was non-significant
on wheat yields and contents of K and Na in plantations. Averaged over fly ash levels, 71.8% exchangeable
K and 68.4 % exchangeable Na was removed in the first extraction. Similarly, more than 35% nonexchangeable
K was extracted in first extraction and a considerable part of it was also released in the
subsequent extractions. Fly ash had non-significant effect on the release of exchangeable K but significantly
reduced the exchangeable Na content. Non-exchangeable K, total K and total Na contents in soil were also
not significantly affected by fly ash additions. Though, the soil pH and soluble salt content did not change
significantly with fly ash application, but a significant reduction in Na content in rice and exchangeable Na
suggested that it can be used as a resource for reclamation and management of the alkali soils.
Not Available
 
Date 2019-11-29T09:53:09Z
2019-11-29T09:53:09Z
2012-01
 
Type Research Paper
 
Identifier Not Available
Not Available
http://krishi.icar.gov.in/jspui/handle/123456789/25869
 
Language English
 
Relation Not Available;
 
Publisher Not Available