Effect of calcium salts application on soil properties of pokkali soils
Keywords:
Calcium salts, Pokkali, Prawn, Rice, Soil propertiesAbstract
A field study was conducted in Thathapilli padasekharam (10º12’N, 76º26’ E) in Ernakulam district, during June 2017-April 2018 to study the effect of calcium salts application on soil properties of pokkali soils. The treatments comprised of absolute control (T1 ), application of calcium nitrate (T2 ), calcium chloride (T3 ), calcium sulphate (T4 ), rock phosphate (T5 ) and dolomite (T6 ) at the rate of 45, 30, 34, 27 and 25 kg per 100 m² respectively, so as to adjust the ratio of Na: Ca to 1: 5 on the exchange complex of the soils. Significant increment in the soil pH and microbial biomass carbon were noticed in all the treatments over control. Exchangeable Na, Al and available Fe contents in soil were reduced significantly by calcium salts application after the harvest of rice. Exchangeable Na content remained high in control after the harvest of prawn, whereas it was lower in calcium salt treatments except in the case of rock phosphate.References
References
Bhindu, P.S. 2017. Chemistry and transformations of calcium and magnesium in tropical acid soils of Kerala. MSc thesis, Kerala Agricultural University, Thrissur, 285p.
Bolan, N.N, Adriano, D.C., and Curtin, D. 2003. Soil acidification and liming interactions. In: Donald L. Sparks(ed.). Elsevier, Armsterdam, Adv. in Agron. 78: 215-72.
David, R. and Dimitrios, P. 2002. Diffusion and cation exchange during the reclamation of saline structured soils. Geoderma 107 : 271-279.
Ellis, R., Quader, M.A. and Troog, E. 1955. Rock phosphate availability as influenced by soil pH. Proc. Soil Sci. Soc. Am. 19, 484-487.
Haynes, R.J. and Naidu, R. 1998. Influence of lime, fertilizer and manure application on soil organic matter content and soil physical conditions: a review. Nutr. Cycl. Agroecosyst. 51:123-137.
Haynes, R.J. and Swift, R.S. 1988. Effects of lime and phosphate additions on changes in enzyme activities, microbial biomass and level of extractable nitrogen, sulfur and phosphorous in an acid soil. Biol.Fertil. Soils 6: 153-158.
Sanchez, P.A., 1976. Properties and Management of Soils in the Tropics John Wiley and Sons New York.
Santhosh, C. 2013. Chemistry and transformation of boron in soils of Kerala. PhD thesis, Kerala Agricultural University, Thrissur, 187 p.
Sasidharan, N. K. 2004. Enhancing the productivity of the rice – fish/ prawn farming system in Pokkali lands. PhD thesis, Kerala Agricultural University, Thrissur 190p.
Tacon, A.G.J., 1987. The Nutrition and Feeding of Farmed Fish and Shrimp - a Training Manual [Online]. Food and Agriculture Organisation of the United Nations, Rome. Available: http://www.fao.org/docrep/field/003/ab470e/AB470E00.htm#TOC [16 Dec 2016]
Tuna, A. L., Kaya, C., Ashraf, M., Altunlu, Yokas, I. and Yahmur, B. 2007. The effect of calcium sulphate on growth, membrane stability and nutrient uptake of tomato plants grown under salt stress. Envin. And Experimental Botany. 59: 173-178.
Yoshida S. 1981. Fundamentals of rice crop science. International Rice Research Institute, Los Banos, Philippines.
Downloads
Published
How to Cite
Issue
Section
License
Copyright © 2001-11 Kerala Agricultural University. Some rights reserved. This journal and the individual contributions contained in it are protected under copyright by the Kerala Agricultural University and the following terms and conditions apply to their use; Photocopying Single photocopies of single articles may be made for personal use as allowed by national copyright laws. Permission of the publisher and payment of a fee is required for all other photocopying including multiple or systematic copying, copying for advertising or promotional purposes, resale, and all forms of document delivery. Permission may be sought directly from the Editor, Journal of Tropical Agriculture, Department of Agronomy, College of Horticulture,, Kerala Agricultural University, KAU PO, Thrissur 680 656, Kerala, India. (Phone: +91-487-2438325; Fax +91-487-2371040; E-mail: editor.jta@kau.in. Derivative works Subscribers may reproduce tables of contents or prepare lists of articles including abstracts for internal circulation within their institution. Permission of the Publisher is required for resale or distribution outside the institution. Permission of the Publisher is required for all other derivative works, including compilations and translations. Notice No responsibility is assumed by the Publisher for any injury and/or damage to persons or property as a matter of products, liability, negligence, or otherwise, or from any use of any methods, products, instructions or ideas contained in the material herein.