Organic nitrogen in potassium chloride extracts of histosols in the Philippines

Sahrawat, K L (1983) Organic nitrogen in potassium chloride extracts of histosols in the Philippines. Geoderma, 29 (1). pp. 77-80. ISSN 0016-7061

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Analyses of 2M KCl extracts of four Histosols (Tropohemists) in aerobic and anaerobic states showed that they contained significant amounts of organic N (21–102 mg N/kg of soil) but that the amounts were higher in anaerobic samples (following 4 weeks incubation under waterlogged conditions). It is suggested that the amounts of organic N extracted by KCl and other salt solutions should be taken into account along with mineral N estimation to avoid error in measuring potentially mineralizable N in Histosols of tropical lowlands.

Item Type: Article
Subjects: Others > Soil Science
Others > Fertilizer Applications
Depositing User: Mr Sanat Kumar Behera
Date Deposited: 30 Nov 2011 13:24
Last Modified: 30 Nov 2011 13:24
Official URL:
Funders: International Rice Research Institute
Acknowledgement: I thank the International Rice Research Institute (IRRI), Los Banos, Laguna, Philippines for financial support and Dr. F.N. Ponnamperuma, Prin­ cipal Soil Chemist, for his interest in the work.
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