Effects of herbicide application on carbon dioxide, dissolved oxygen, pH, and RpH in paddy-field ponded water

Usui, Yasuhiro; Kasubuchi, Tatsuaki

doi:10.1080/00380768.2010.541868

Cited by 19 publications

(8 citation statements)

References 22 publications

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“…4.30 -5.05 (Table 6), indicating that the application of pesticides on peat soil did not change the soil pH. The result of current study is in contrast with the study of Usui (2011) that showed that the application of herbicide (HA -ACN, (2-amino-3-chloro-1,4-naphthoquinon) 9%) on paddy soil increased the soil pH and decreased the CO 2 emissions along with the accumulation period. On the other hand, according to Bennicelli (2008), the application of the pesticide (Glyphosphat) on Histosol increased the dehydrogenase enzyme activity, pH, Eh, and CO 2 production after 42 days of incubation.…”

Section: Ph Of Peat Soilcontrasting

confidence: 55%

The Effect of Paraquat, Difenoconazole, and Butylphenyl Methylcarbamate (BPMC) on CO2 Emissions and Phenolic Acids in Peat Soil

et al. 2017

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Pesticides are widely used in agriculture, including on peat soil. The objective of this study was to analyze the effect of the application of paraquat, difenoconazole, and butylphenyl methylcarbamate (BPMC) on CO 2 emissions and concentrations of phenolic acids in a peat soil. Peat soil sample was taken in District of Pulang Pisau, Central Kalimantan. The peat soil was applied with 1.89 mg kg -1 paraquat, 1.72 mg kg -1 difenoconazole and 1.65 mg kg -1 butylphenyl methylcarbamate (BPMC), then the soil was incubated for 1, 2, 4 , 5, 7, 10, 14, 21, 26 and 30 days. The results showed that the application of pesticides on peat soil increased CO 2 emission, and decreased CH 4 emission and phenolic acid concentrations up to 30 days of incubation. The CO 2 emmisions were derived from C of degraded pesticides and from C of phenolic acids, although the oxidation reaction was not accompanied by the change of soil pH.Keyword: CO 2 emission, phenolic acids, butylphenyl methylcarbamate (BPMC), difenoconazole, paraquat, peat soil Pestisida banyak digunakan di lahan pertanian, termasuk di tanah gambut. Penelitian ini bertujuan untuk mempelajari pengaruh pestisida terhadap emisi CO 2 , dan konsentrasi asam fenolat pada tanah gambut. Contoh tanah gambut diambil dari Kabupaten Pulang Pisau, Provinsi Kalimantan Tengah. Contoh tanah tersebut diberikan pestisida dengan bahan aktif paraquat (1,89 mg kg -1 ), difenoconazole (1,72 mg kg -1 ) dan butylphenyl methylcarbamate (BPMC, 1,65 mg kg -1 ) dan selanjutnya diinkubasi di laboratorium selama 1, 2, 4, 5, 7, 10, 11, 14, 21, 26, dan 30 hari. Pemberian pestisida pada dosis anjuran selama 30 hari meningkatkan emisi CO 2 [metode titrasi], dan menurunkan emisi CH 4 . Pemberian pestisida selama 30 hari meningkatkan emisi CO 2 , dan menurunkan emisi CH 4 dan konsentrasi asam-asam fenolat di dalam tanah gambut. Emisi CO 2 berasal dari oksidasi C asam-asam fenolat dan bahan-bahan aktif pestisida, dimana reaksi oksidasi ini tidak disertai dengan perubahan pH tanah.

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Section: Ph Of Peat Soilcontrasting

confidence: 55%

The Effect of Paraquat, Difenoconazole, and Butylphenyl Methylcarbamate (BPMC) on CO2 Emissions and Phenolic Acids in Peat Soil

et al. 2017

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“…，地球上で最も溶存酸素濃度が高い水域の一つ(粕渕, 2010)とも言われている。溶存酸素が日周変化するのは，湛水層に生息するシアノバクテリアや藻類の光合成および呼吸によると考えられる (Saito and Watanabe, 1978;伊藤・増島, 1980, 1984Ito, 1987;Mowjood and Kasubuchi, 1998a, 1998bKishida et al, 2001;Usui and Kasubuchi, 2011;臼井･粕渕, 2013 Mikkelsen et al, 1978)。Mikkelsen et al(1978は太陽放射のもと，浅い湛水中では，そこに生息している水生生物の作用により pH が 9.5 から 10 と高い値へと上昇することでアンモニアの揮散が生じることを報告している。土壌 pH のみならず，湛水の pH の測定には，肥培管理の指標として重要な側面があり，水田湛水の pH の挙動を知ることは，作物の栽培管理の上でも重要な役割があると考えられる(臼井・粕渕 2013)。このほか，水田湛水中における高 pH については多くの報告がなされており (Mikkelsen et al, 1978;伊藤・増島, 1980, 1984Ito, 1987;Kishida et al, 2001;Usui et al, 2003;Usui and Kasubuchi, 2011; 臼井･粕渕, 2013)，高 pH となった湛水層が，湛水層近傍の大気中 CO2 を吸収していることも明らかとなっている (Usui et al, 2003) Kasubuchi, 1998a, 1998b Kasubuchi, 1998a, 2002)ことから，水田における温室効果ガスの湛水層を介しての挙動に対して対流がどのように関わってくるのかを検討することが期待される。また，湖沼において水の対流は生態系を維持する上で重要と認識されている (Horne and Goldman, 1994;花里, 1998;奥宮ら, 2001 …”

Section: 水田における物理計測の重要性unclassified

A review of improvements to methods for the measurement of dissolved oxygen, pH, and soil redox potential and the discovery of convective flow in ponded water of paddy fields

Usui

2013

Climate in Biosphere

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To analyze how physical factors vary from hour to hour in ponded water of paddy fields, techniques that allow continuous measurement of these factors are required. Until recently, a lack of proper instrumentation made this type of measurement difficult to do. The development of measurement instrumentation and information processing technology has now made the continuous measurements of these physical factors feasible. Making these types of measurements practical has also required the design of instruments suitable for use under field conditions. This paper reviews the progress in the development of these measurement and instrumentation technologies with respect to four specific physical parameters of ponded water in paddy fields. Dissolved oxygen (DO) in paddy fields is important for the creation of an aerobic environment. DO in ponded water is considered one of the most abundant forms of DO in the world. The improvement of DO-measuring methods is reviewed, ranging from earlier methods requiring periodical manual sampling to current continuous automated sampling methods. The acidic or alkaline nature of the environment is critical for plant growth. The large variation in pH throughout the day in ponded water, factors that affect pH, and the influence of ponded water pH on the surrounding environment are discussed. Methods for measurement of pH in the field are reviewed. Soil redox potential (Eh) has been an area of great interest. Methods for the measurement of soil Eh have been improved. Two types of approaches are used to measure soil Eh: direct and indirect. However, continuous measurement of paddy soil Eh in the field remains difficult. Finally, convective flow is an important physical parameter in ponded paddy water. The discovery of convective flow and the progress made to date in meeting the challenge of developing methods to measure convection velocity in the field are reviewed.

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“…The total dissolved oxygen (DO) is very important as it influences rice root growth and nitrogen availability in the soil. The rate of DO in the water increases when enough sunlight reaches the surface of rice leaves and bare fields (Usui & Kasubuchi, 2011). This term measures water quality for rice where water's capability to pass electrical flow.…”

Section: Introductionmentioning

confidence: 99%

River Water Quality Monitoring at Paddy Field in Merlimau, Melaka

Mustaffha

Sabran²

2022

Adv Agric Food Res J

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Water is the main resource of rice cultivar input for growth development and yield production. The water quality can affect the rice yield. The aim of the study is to analyze the water quality at the rivers that are directly supplied to the paddy fields. The water quality of the river at Merlimau paddy field was tested using Cyberscan 600 series. The variables taken are pH, conductivity level, sodium chloride (NaCl) and resistivity level. The monitoring was conducted at three stages of the paddy cultivation process which are during land preparation, vegetative stage and maturing stage to see the variables supplied to the paddy fields. This study can help the farmers to know the state of water quality that has been used to irrigate the paddy field.

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Effects of herbicide application on carbon dioxide, dissolved oxygen, pH, and RpH in paddy-field ponded water

Cited by 19 publications

References 22 publications

The Effect of Paraquat, Difenoconazole, and Butylphenyl Methylcarbamate (BPMC) on CO2 Emissions and Phenolic Acids in Peat Soil

The Effect of Paraquat, Difenoconazole, and Butylphenyl Methylcarbamate (BPMC) on CO2 Emissions and Phenolic Acids in Peat Soil

A review of improvements to methods for the measurement of dissolved oxygen, pH, and soil redox potential and the discovery of convective flow in ponded water of paddy fields

River Water Quality Monitoring at Paddy Field in Merlimau, Melaka

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