Effects of Organic Manures on Production of Lettuce (Lactuca sativa L.) in Reference to Chemical Fertilizer

Authors

  • Krishna Prasad Paudel Department of Horticulture, Faculty of Agriculture, Kasetsart University, Bangkok 10900, Thailand.
  • Sutevee Sukprakarn Department of Horticulture, Faculty of Agriculture, Kasetsart University, Bangkok 10900, Thailand.
  • Krung Sidathani Tropical Vegetable Rearch Center , Kasetsart University, Kamphaeng Saen Campus, Nakhon Pathom 73140, Thailand.
  • Yongyut Osotsapar Department of Soil Science, Faculty of Agriculture, Kasetsart University, Kamphaeng Saen Campus, Nakhon Pathom 73140, Thailand.

Keywords:

organic manures, chemical fertilizers, lettuce

Abstract

The effect of three types of organic manures, its combination within and with chemical fertilizer was studied under the nylon net house. A lettuce cultivar of ‘Green Fancy’ was grown during December, 2002, February and April 2003. The same amount of nitrogen from organic manures and chemical fertilizers was applied to the experimental plots for each crop. Cow dung (CD), chicken manure (CM) and duck manure (DM) were applied 4.5, 4.7 and 5.8 t/ha, respectively, contributing 81 kg nitrogen each. In the case of combination treatments each combination contributed 1:1 ratio of nitrogen. A treatment with recommended dose of chemical fertilizer (CF) providing 81 kg nitrogen was also included. The crop grown with 4.7 t/ha of CM alone and its combination with CF (2.35 ton CM plus 156 kg complete fertilizer i.e., 15-15-15 together with 82 kg/ha of ammonium sulfate) gave a significantly higher yield throughout the crop season. Combination treatments within organic manures did not establish any statistical
significance. In spite of the differences in total yield, fiber content and dry matter percentage showed not significant results irrespective of treatments and crop seasons.

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Published

2004-02-28

How to Cite

Krishna Prasad Paudel, Sutevee Sukprakarn, Krung Sidathani, and Yongyut Osotsapar. 2004. “Effects of Organic Manures on Production of Lettuce (Lactuca Sativa L.) in Reference to Chemical Fertilizer”. Agriculture and Natural Resources 38 (1). Bangkok, Thailand:31-37. https://li01.tci-thaijo.org/index.php/anres/article/view/242924.

Issue

Vol. 38 No. 1 (2004): January-February

Section

Research Article

License

online 2452-316X print 2468-1458/Copyright © 2022. This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/),
production and hosting by Kasetsart University of Research and Development Institute on behalf of Kasetsart University.