Soil element assessment in organic paddy fields in the Thung Kula Ronghai zone, Thailand

Kroeksakul, Patarapong and Silprasit, Kun and Phowan, Naphat and Ngamniyom, Arin and Singhaboot, Pakjirat (2022) Soil element assessment in organic paddy fields in the Thung Kula Ronghai zone, Thailand. Pertanika Journal Tropical Agricultural Science (Malaysia), 45 (2). 391- 409. ISSN 1511-3701

Organic rice production (ORP) has been promoted as a means of sustaining both farmers and the ecology of paddy fields, so this research aims to evaluate soil properties and soil elements in the ORP and general rice production (GRP) systems in the Thung Kula Ronghai (TKR) zone in Thailand. Soil samples were collected in Roi-et province from fields classified as ORP (5 fields) or GRP (4 fields), and interviews were also conducted with the field owner about rice yield and rice production. Data from the ORP and GRP groups were compared by t-test, and soil enhancement practices were measured by one-way analysis of variance (ANOVA) for variances. Results indicate there were 14 indicators of soil element control in the TKR. All indicators in the ORP and GRP systems were lower than the rate in soil that is suitable for rice production. The macroelement content in the TKR zone was total nitrogen > total potassium > phosphorus available at a ratio of 338: 3: 1, and the soil organic matter (SOM)/soil organic carbon (SOC) ratio is about 3.45. The soil improvement techniques used in the ORP systems—manure only and manure combined with green manure—have a higher pH value (p < 0.05) than the fertilizer only input but a lower TK value (p < 0.05) than the fertilizer only input. As a result, the ORP yield was higher than that of the GRP systems (p < 0.05), greatly affecting farmers’ practices.

Full text available from: Official URL: http://www.pertanika.upm.edu.my/resources/files/Pe...

Abstract

Organic rice production (ORP) has been promoted as a means of sustaining both farmers and the ecology of paddy fields, so this research aims to evaluate soil properties and soil elements in the ORP and general rice production (GRP) systems in the Thung Kula Ronghai (TKR) zone in Thailand. Soil samples were collected in Roi-et province from fields classified as ORP (5 fields) or GRP (4 fields), and interviews were also conducted with the field owner about rice yield and rice production. Data from the ORP and GRP groups were compared by t-test, and soil enhancement practices were measured by one-way analysis of variance (ANOVA) for variances. Results indicate there were 14 indicators of soil element control in the TKR. All indicators in the ORP and GRP systems were lower than the rate in soil that is suitable for rice production. The macroelement content in the TKR zone was total nitrogen > total potassium > phosphorus available at a ratio of 338: 3: 1, and the soil organic matter (SOM)/soil organic carbon (SOC) ratio is about 3.45. The soil improvement techniques used in the ORP systems—manure only and manure combined with green manure—have a higher pH value (p < 0.05) than the fertilizer only input but a lower TK value (p < 0.05) than the fertilizer only input. As a result, the ORP yield was higher than that of the GRP systems (p < 0.05), greatly affecting farmers’ practices.

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Item Type:	Article
AGROVOC Term:	soil properties
AGROVOC Term:	rice fields
AGROVOC Term:	ecological production
AGROVOC Term:	organic agriculture
AGROVOC Term:	soil amendments
AGROVOC Term:	research
AGROVOC Term:	farm inputs
AGROVOC Term:	fertilizers
AGROVOC Term:	soil improvement
Geographical Term:	Thailand
Uncontrolled Keywords:	Organic paddy field, organic rice production, soil element, Thung Kula Ronghai
Depositing User:	Ms. Azariah Hashim
Date Deposited:	27 Jan 2025 02:40
Last Modified:	27 Jan 2025 02:40
URI:	http://webagris.upm.edu.my/id/eprint/1915

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