scholarly journals ASSESSMENT OF THE INFLUENCE OF CONTINUOUS AND INTERMITTENT IRRIGATION ON GREENHOUSE GAS EMISSIONS FROM PADDY RICE

2016 ◽  
Vol 78 (1-2) ◽  
Author(s):  
Akinbile C. O. ◽  
Semowo O. R. ◽  
Babalola T. E. ◽  
Hasfalina C. M.
Keyword(s):  
Water Management ◽  
Paddy Rice ◽  
Rice Fields ◽  
Standard Laboratory ◽  
Gas Chromatograph ◽  
Gas Sampling ◽  
Intermittent Irrigation ◽  
Laboratory Procedures ◽  
The Common ◽  
The Impact

The impact of two water management practises on Greenhouse Gases (GHGs) emissions from paddy rice fields was investigated. New Rice for Africa (NERICA 2) lowland variety was planted under intermittent irrigation (II) and continuous flooding (CF) water management practises. Two closed gas chambers (GCs) were developed and used for gas sampling from paddy fields and measurement was done conventionally in all the four growing stages of rice. Gas Chromatograph (GH200-9) was used analysing GHGs such as Methane (CH4), Nitrous oxide (N2O), Hydrogen Sulphide (H2S) and Oxygen (O2). Soil analyses were carried out to determine the presence of the following parameters viz: nitrogen (N), phosphorus (P), potassium (K), magnesium (Mg), Manganese (Mn) and calcium (Ca). Others are Organic Carbon (OC), Moisture Content (MC), Iron (Fe), Chloride (Cl) and Electrical conductivity (EC) using standard laboratory procedures and ascertain effects of their availability on GHGs concentration levels. From the study, no appreciable CH4 emissions was detected during the four growing stages and under the two water management practises but other GHGs emitted were higher in CF compared with II. Soil nutrients such as N, OC, K and P also contributed considerably to emissions recorded on the two rice fields. The detection of H2S was also an indication that other gases apart from the common GHGs were present in rice fields. Although, CH4 was not detected, other GHGs emitted were more in CF when compared with II which suggested that II be encouraged as a mitigation strategy for reducing impacts of its emissions.

scholarly journals Minimizing Nutrient Loading from SCB Treated Paddy Rice Fields through Water Management

2012 ◽  
Vol 45 (5) ◽  
pp. 671-675 ◽  
Author(s):  
Min-Kyeong Kim ◽  
Soon-Ik Kwon ◽  
Seong-Soo Kang ◽  
Goo-Bok Jung ◽  
Seung-Chang Hong ◽  
...  
Keyword(s):  
Water Management ◽  
Nutrient Loading ◽  
Paddy Rice ◽  
Rice Fields

Influence of water management and fertilizer application on 137Cs and 133Cs uptake in paddy rice fields

2016 ◽  
Vol 157 ◽  
pp. 102-112 ◽  
Author(s):  
Shokichi Wakabayashi ◽  
Sumio Itoh ◽  
Nobuharu Kihou ◽  
Hisaya Matsunami ◽  
Mayumi Hachinohe ◽  
...  
Keyword(s):  
Water Management ◽  
Fertilizer Application ◽  
Paddy Rice ◽  
Rice Fields ◽  
Influence Of Water

Pengaruh Konversi Lahan terhadap Strategi Pemanfaatan Modal Nafkah Rumah Tangga Buruh Tani

2020 ◽  
Vol 4 (3) ◽  
pp. 407
Author(s):  
Hesti Prastiwi ◽  
Martua Sihaloho
Keyword(s):  
Qualitative Data ◽  
Rice Fields ◽  
Livelihood Strategies ◽  
Quantitative Approach ◽  
Survey Method ◽  
Land Conversion ◽  
Literature Study ◽  
Irrigated Rice ◽  
Sustainable Food ◽  
The Impact

Lahan merupakan salah satu sumber daya agraria yang sangat penting bagi petani dikarenakan lahan merupakan salah satu sumber untuk bertahan hidup. Sesuai dengan Undang-Undang Dasar Nomor 41 Tahun 2009 tentang Perlindungan Lahan Pertanian Pangan Berkelanjutan. Pembangunan yang terjadi di Indonesia semakin masif, menimbulkan konversi lahan bersifat permanen ketika lahan sawah beririgasi berubah menjadi kawasan pemukiman atau industri. Konversi lahan yang terjadi menyebabkan hilangnya beberapa atau seluruh modal nafkah yang ada. Perubahan modal nafkah ini akan mengakibatkan perubahan strategi nafkah petani. Penelitian ini bertujuan untuk menganalisis dampak konversi lahan terhadap strategi nafkah dan pengaruh pemanfaatan  modal nafkah  terhadap strategi nafkah rumah tangga. Lokasi penelitian ini yaitu Desa Pasirgaok, Kecamatan Rancabungur, Kabupaten Bogor. Metode yang digunakan untuk menggali fakta, data, dan informasi dalam penelitian adalah pendekatan kuantitatif melalui metode survei dengan kuesioner yang didukung oleh data kualitatif melalui wawancara dan studi literatur hingga diperoleh hasil bahwa dampak konversi lahan mempengaruhi modal dan strategi nafkah.Kata Kunci: buruh tani, konversi lahan, modal nafkah, strategi nafkah=====ABSTRACTLand is one of the most important agrarian resources for farmers because land is one source of livelihood survival. According to Constitution Number 41 Year 2009 on concerning The Protection of Sustainable Food Agriculture. The development that is taking place in Indonesia is increasingly massive leading to permanent land conversion when technical irrigated rice fields change into residential or industrial areas. The land conversion that occurs causes a loss of some or all existing livelihood asset. This change in livelihood asset will result in a change in farmers livelihood strategies. This study aims to analyze the influence of the impact of land conversion towards livelihood strategies and the influence of the utilization of livelihood asset towards the livelihood strategies households. The location of this research is Pasirgaok Village, Rancabungur District, Bogor Regency. The method used to extract facts, data, and information in the research is the quantitative approach through survey method with questionnaires supported by qualitative data through interview and literature study until it is obtained that the impact of land conversion towards landless farmer household’s assets and livelihood strategies.Keywords: land conversion, landless farmer, livelihood asset, livelihood strategies

The impact of applying the Common Customs Tariff on the armenian export of Cut and Polished Gems to Russia

2019 ◽  
pp. 33-41
Author(s):  
V. L. Harutyunyan ◽  
S. V. Dokholyan ◽  
A. R. Makaryan
Keyword(s):  
Manufacturing Sector ◽  
Practical Implication ◽  
Dominant Role ◽  
New Technology ◽  
Manufacturing Companies ◽  
Medium Term ◽  
Diamond Cutting ◽  
Global Trends ◽  
The Common ◽  
The Impact

The presented study discusses the issues of applying the Common Customs Tariff (CCT) rates of the Eurasian Economic Union (EAEU) on rough diamonds and the impact thereof on the exports of stones cut and polished inArmeniaand then exported toRussia.Aim. The study aims to identify the possible strategies Armenian diamond cutting and polishing companies could adopt as a response to the application of the CCT rates on rough diamonds and how it would affect exports to various destinations, namely to Russia.Tasks. The authors analyze the current state of the gems and jewelry sector and substantiate the need to either integrate it into the jewelry manufacturing sector or to apply various strategies to facilitate exports to either Russia or other destinations in the medium term in response to the application of the CCT rates.Methods. This study uses general scientific methods of cognition, including analytical and methodological approaches and elements of forecasting. Possible strategies the Armenian diamond cutting and polishing companies could adopt in the medium term in response to the application of the EAEU CCT rates are determined using the analytical research method, forecasts in the context of the developments in the Armenian gem processing and jewelry market and global trends, statistical data on the imports and exports of cut and polished gems and jewelry for 2014–2018 published by the UN Comtrade Statistics.Results. Statistics on the exports of processed diamonds from 2014 to 2018 highlights the issue associated with the loss of competitiveness suffered by Armenian companies (mainly in comparison with Indian diamond cutters). The major global trends in the diamond cutting and polishing business indicate that it could be virtually impossible for Armenian cutters and polishers to compete with Indian companies in the medium term if they do not comes to investing in new technology to achieve operational efficiency. For these companies, it is important not to lose the Russian market due to an increase in the tariff rate and concentrate on the processing of gems that are larger than 1 carat. Another strategy to avoid an increase in the customs tariff rates would depend on the Armenian government’s ability to negotiate with Russia in respect of direct imports of diamond stones from Russian manufactures. Two other options for Armenian cutters involve focusing on cutting and polishing of rubies, sapphires, emeralds, etc. or integrating into the jewelry sector either by being the primary supplier or by considering this business as a channel to sell processed diamond stones by setting up their own jewelry manufacturing companies.Conclusions. With CCT going into effect in January 2021 and India’s dominant role in the diamond cutting and polishing business, Armenia needs to carefully consider all of the strategies the Armenian companies could adopt, as discussed above. As a member state of the EAEU, Armenia freely exports to Russia, however, further exports to Russia would depend on Armenia’s ability to ensure that cost-effective operations are in place, or to concentrate on the processing of precious gems rather than diamonds, or to switch to the manufacturing of jewelry items as a major export item.Practical Implication. The findings of this study could be of interest to the Ministry of Economy of the Republic of Armenia and Business Armenia that could be used in elaborating the strategy for the development of Armenian gems and jewelry sector of the economy.

The Impact of Applying the Common Customs Tariff on Armenian Exports of Tobacco Products

2020 ◽  
Vol 26 (4) ◽  
pp. 358-365
Author(s):  
V. L. Harutyunyan ◽  
S. V. Dokholyan ◽  
A. R. Makaryan
Keyword(s):  
Tobacco Products ◽  
The Common ◽  
The Impact

Emergence of Weeds in Paddy Rice Fields

1975 ◽  
Vol 20 (3) ◽  
pp. 109-113 ◽  
Author(s):  
Mitsuyoshi SUZUKI ◽  
Takahisa SUTO
Keyword(s):  
Paddy Rice ◽  
Rice Fields

Marine Quality Standards: Their Derivation and Application in the United Kingdom

1985 ◽  
Vol 17 (6-7) ◽  
pp. 1187-1198 ◽  
Author(s):  
G. Mance ◽  
A. R. O'Donnell
Keyword(s):  
Coastal Waters ◽  
Sublethal Effects ◽  
Quality Standards ◽  
Toxicity Data ◽  
Marine Life ◽  
Nickel Zinc ◽  
The United Kingdom ◽  
The Common ◽  
Lead Nickel ◽  
The Impact

This paper discusses the derivation of environmental quality standards for coastal waters and the difficulties of using such standards for controlling industrial discharges. Attention is focused on the common List II substances, copper, chromium, lead, nickel, zinc and arsenic - and their effects on marine life. The adequacy of existing toxicity data is discussed and it is concluded that long exposure tests are required to provide information on sublethal effects. Such data are currently limited. It is also important that consideration be given to the effects that reducing salinities and increasing temperatures have in increasing the toxicity of these substances. The complexity of interpreting the results of laboratory toxicity data to coastal waters is discussed with reference to a study of the impact of an industrial discharge.

Larvae of the blow fly Caiusa testacea (Diptera: Calliphoridae) as egg predators of Polypedates cruciger Blyth, 1852 (Amphibia: Anura: Rhacophoridae)

2020 ◽  
Vol 12 (17) ◽  
pp. 17374-17379
Author(s):  
W.G.D. Chathuranga ◽  
K. Kariyawasam ◽  
Anslem De Silva ◽  
W.A.Priyanka P. De Silva
Keyword(s):  
Sri Lanka ◽  
High Impact ◽  
Tree Frog ◽  
Blow Fly ◽  
Breeding Habitats ◽  
The Family ◽  
Water Container ◽  
The Common ◽  
Natural Breeding ◽  
The Impact

We investigated the impact of dipteran predators on eggs in foam nests of the Common Hour-glass Tree Frog Polypedates cruciger Blyth, 1852 (Anura: Rhacophoridae) in central Sri Lanka.  Foam nests (n=24) of P. cruciger were examined at their natural breeding habitats and infected (n=8) and uninfected spawns (n=16) were identified.  Emerging tadpoles were collected in a water container hung under each spawn and the average number of tadpoles (N) hatched from infected spawns (N=0) was compared with that of uninfected spawns (N=354 ± 67).  Three severely infected spawns were brought to the laboratory and the fly larvae were reared until they metamorphosed to adults.  Morphological and molecular identification of the flies confirmed them as belonging to Caiusa testacea Senior-White, 1923 of the family Calliphoridae.  The infected spawns were completely destroyed and an estimated average of 400 P. cruciger eggs per spawn were lost.  The results revealed a high impact of Caiusa testacea on egg and embryo mortality of P. cruciger.

Theory and Method and the Stakes of a Fragmented Discipline: Or, What Economics Taught Me About the Study of Religion

2020 ◽  
Author(s):  
Thomas A Lewis
Keyword(s):  
Religious Studies ◽  
The Public ◽  
Global Pandemic ◽  
Recent Developments ◽  
The Common ◽  
The Impact ◽  
Academic Study

Abstract As a discipline, the academic study of religion is strikingly fragmented, with little engagement or shared criteria of excellence across subfields. Although important recent developments have expanded the traditions and peoples studied as well as the methods used, the current extent of fragmentation limits the impact of this diversification and pluralization. At a moment when the global pandemic is catalyzing profound pressures on our universities and disciplines, this fragmentation makes it difficult to articulate to the public, to non-religious studies colleagues, and to students why the study of religion matters. We therefore too often fall back on platitudes. I argue for a revitalized methods and theories conversation that connects us even as it bears our arguments and disagreements about what we do and how. Courses in methods and theories in the study of religion represent the most viable basis we have for bringing the academic study of religion into the common conversation or argument that constitutes a discipline without sacrificing our pluralism.

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