Nutrient availability and biological properties of paddy soils under rainfed traditional “Payatak” farming systems in Catubig Valley, Philippines

Jr. Ultra V.U., G.M. Tan, F.U. Lao, M.R.O. Punsalan, E.A. Galo

Research output: Contribution to journalArticle

Abstract

To understand the long-term effects of payatak and conventional rice farming system on soil properties and soil quality, a soil survey was conducted in existing “payatak” and conventional rice fields in Catubig Valley, Northern Samar, Philippines. Chemical analyses revealed that soils under “payatak” are more acidic, with low EC, OM, and N content compared to those soils from conventional rice farms. However, available P and exchangeable K in “payatak” soils were higher than those in conventional. The available N varied significantly with time and sampling area and the mineral N levels fluctuated greatly within three weeks after land preparation. The BiologEcoPlate™ and subsequent correlation analysis have shown a partial characterization of microbial functional community attributed to several factors leading to differences in chemical properties of the two rice farming systems. These results imply that the levels of OM and the amount of exchangeable K could trigger a distinct microbial community functional structure. Variations in soil pH, EC, and the amounts of nutrients have also caused a shift of the microbial functional diversity as represented by correlations between Shannon–Weaver indices. Overall, the results would indicate that long term “payatak” and conventional rice farming system would result in different soil nutrient status and distinct microbial functional community which may affect the overall productivity and soil quality. Further analysis should be done to establish the relationship between soil microbial properties data onto long term productivity in paddy soils. © 2017, Tarbiat Modares University. All rights reserved.
Original languageEnglish
Pages (from-to)1631-1645
Number of pages15
JournalJournal of Agricultural Science and Technology
Volume19
Publication statusPublished - 2017

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rainfed farming
traditional farming
Philippines
paddy soils
Agriculture
nutrient availability
Biological Availability
Soil
valleys
farming systems
rice
Food
soil
soil quality
site preparation
soil surveys
functional diversity
soil nutrients
paddies
microbial communities

Cite this

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title = "Nutrient availability and biological properties of paddy soils under rainfed traditional “Payatak” farming systems in Catubig Valley, Philippines",
abstract = "To understand the long-term effects of payatak and conventional rice farming system on soil properties and soil quality, a soil survey was conducted in existing “payatak” and conventional rice fields in Catubig Valley, Northern Samar, Philippines. Chemical analyses revealed that soils under “payatak” are more acidic, with low EC, OM, and N content compared to those soils from conventional rice farms. However, available P and exchangeable K in “payatak” soils were higher than those in conventional. The available N varied significantly with time and sampling area and the mineral N levels fluctuated greatly within three weeks after land preparation. The BiologEcoPlate™ and subsequent correlation analysis have shown a partial characterization of microbial functional community attributed to several factors leading to differences in chemical properties of the two rice farming systems. These results imply that the levels of OM and the amount of exchangeable K could trigger a distinct microbial community functional structure. Variations in soil pH, EC, and the amounts of nutrients have also caused a shift of the microbial functional diversity as represented by correlations between Shannon–Weaver indices. Overall, the results would indicate that long term “payatak” and conventional rice farming system would result in different soil nutrient status and distinct microbial functional community which may affect the overall productivity and soil quality. Further analysis should be done to establish the relationship between soil microbial properties data onto long term productivity in paddy soils. {\circledC} 2017, Tarbiat Modares University. All rights reserved.",
author = "{Ultra V.U.}, Jr. and G.M. Tan and F.U. Lao and M.R.O. Punsalan and E.A. Galo",
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Nutrient availability and biological properties of paddy soils under rainfed traditional “Payatak” farming systems in Catubig Valley, Philippines. / Ultra V.U., Jr.; Tan, G.M.; Lao, F.U.; Punsalan, M.R.O.; Galo, E.A.

In: Journal of Agricultural Science and Technology, Vol. 19, 2017, p. 1631-1645.

Research output: Contribution to journalArticle

TY - JOUR

T1 - Nutrient availability and biological properties of paddy soils under rainfed traditional “Payatak” farming systems in Catubig Valley, Philippines

AU - Ultra V.U., Jr.

AU - Tan, G.M.

AU - Lao, F.U.

AU - Punsalan, M.R.O.

AU - Galo, E.A.

N1 - Export Date: 18 July 2018

PY - 2017

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AB - To understand the long-term effects of payatak and conventional rice farming system on soil properties and soil quality, a soil survey was conducted in existing “payatak” and conventional rice fields in Catubig Valley, Northern Samar, Philippines. Chemical analyses revealed that soils under “payatak” are more acidic, with low EC, OM, and N content compared to those soils from conventional rice farms. However, available P and exchangeable K in “payatak” soils were higher than those in conventional. The available N varied significantly with time and sampling area and the mineral N levels fluctuated greatly within three weeks after land preparation. The BiologEcoPlate™ and subsequent correlation analysis have shown a partial characterization of microbial functional community attributed to several factors leading to differences in chemical properties of the two rice farming systems. These results imply that the levels of OM and the amount of exchangeable K could trigger a distinct microbial community functional structure. Variations in soil pH, EC, and the amounts of nutrients have also caused a shift of the microbial functional diversity as represented by correlations between Shannon–Weaver indices. Overall, the results would indicate that long term “payatak” and conventional rice farming system would result in different soil nutrient status and distinct microbial functional community which may affect the overall productivity and soil quality. Further analysis should be done to establish the relationship between soil microbial properties data onto long term productivity in paddy soils. © 2017, Tarbiat Modares University. All rights reserved.

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