Organic agriculture: Soil improvement with economical methodology
Research Title :Organic agriculture : Soil improvement with economical methodology
Research : Asst.Prof.Natdhera Sanmanee, Ph.D
Office :
Research Grants : Research and Innovation for Transfer technology to Rural Community Project
Year : 2009
Organic agriculture : soil improvement with economical methodology
Research teams
- Asst.Prof.NatdheraSanmanee, Ph,D Head of the project
Department of Environmental Science, Faculty of Science, Silpakorn University
- Mr.SuwanNanthasarut
Regional Environmental Office 5, Ministry of Natural Resources and Environment
- Mr.SupachokKampoophong
Organic Agriculture Network, NakornPathom
Duration: 1yr (Apr 1, 2008 – Mar 31, 2009
Abstract
The objective of this study was to compare the efficiency of two different composts with chemical fertilizer (Fertilizer C) that was having N-P-K equaled to 25%, 7% and 7%. The first composts called normal organic fertilizes (Compost N) contained bat, chicken, swine and cow manures, 2.13, 8.5%, 17% and 17%, respectively mixed with chopped Leucaenaleucocephala de Wit 10.63%, bran of rice 25.5%, molace 2.3%, dolomite 10.63%, fish fermented juice 2.13% and micronutrients 4.25%. The second composts called enriched organic fertilizers (Compost E) contained the same as compost N ingredients together with EDTA, rock phosphate, urea and potassium. The selected time of composting to gain the high amounts of organic carbon and nitrogen was 49 days and the plant selected to study was cabbage (Brassica oleraceal, var. capitata.L)
The results showed that both composts increased the average wet and dry weights of the cabbage significantly when compared to the one that used chemical fertilizer (∝ = 0.05). The average wet weights of cabbage compost N, E and chemical fertilizer were 980.0, 1028.1 and 703.1 g, respectively and the average dry weights of cabbage were 76.8, 87.0 and 57.2 g, respectively, Nevertheless, both composts, N and E were having the average wet and dry weights no significant difference from each other (∝ = 0.05). Therefore, choosing either compost would rely on the cost where the compost N was lesser at 1.7 times of compost E.
Keywords: compost, enriched compost, organic fertilizer, cabbage