Effects of changes in agricultural activities on the nitrogen cycle in Khon Kaen Province, Thailand between 1990–1992 and 2000–2002

Matsumoto, Naruo; Paisancharoen, Kobkiet; Ando, Sugihiro

doi:10.1007/s10705-009-9275-6

Cited by 11 publications

(3 citation statements)

References 20 publications

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“…It was burnt in four of the eight sites, but only by a substantial share of farmers (69% and 25%; respectively) in Kilombero (Tanzania) and Doho (Uganda). Straw burning has been reported all around the world (Affholder, Poeydebat, Corbeels, Scopel, & Tittonell, 2012; Akanvou et al., 2000; Dobermann & Fairhurst, 2000; Matsumoto, Paisancharoen, & Ando, 2010; Sheldrick, Syers, & Lingard, 2002), and ESA sites are not different in this regard. At seven of the eight sites, farmers (ranging from 4% to 32%) incorporated the straw in the soil.…”

Section: Resultsmentioning

confidence: 98%

Quantifying rice yield gaps and their causes in Eastern and Southern Africa

Senthilkumar¹,

Rodenburg

Dieng

et al. 2020

J Agronomy Crop Science

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The demand for rice in Eastern and Southern Africa is rapidly increasing because of changes in consumer preferences and urbanization. However, local rice production lags behind consumption, mainly due to low yield levels. In order to set priorities for research and development aimed at improving rice productivity, there is a need to characterize the rice production environments, to quantify rice yield gaps—that is, the difference between average on‐farm yield and the best farmers’ yield—and to identify causes of yield gaps. Such information will help identifying and targeting technologies to alleviate the main constraints, and consequently to reduce existing yield gaps. Yield gap surveys were conducted on 357 rice farms at eight sites (19–50 farmers per site) across five rice‐producing countries in Eastern and Southern Africa—that is Ethiopia, Madagascar, Rwanda, Tanzania and Uganda—for one or two years (2012–13) to collect both quantitative and qualitative data at field and farm level. Average farm yields measured at the eight sites ranged from 1.8 to 4.3 t/ha and the average yield gap ranged from 0.8 to 3.4 t/ha. Across rice‐growing environments, major causes for yield variability were straw management, weeding frequency, growth duration of the variety, weed cover, fertilizer (mineral and organic) application frequency, levelling and iron toxicity. Land levelling increased the yield by 0.74 t/ha, bird control increased the yield by 1.44 t/ha, and sub‐optimal management of weeds reduced the yield by 3.6 to 4.4 t/ha. There is great potential to reduce the current rice yield gap in ESA, by focusing on improvements of those crop management practices that address the main site‐specific causes for sub‐optimal yields.

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Section: Resultsmentioning

confidence: 98%

Quantifying rice yield gaps and their causes in Eastern and Southern Africa

Senthilkumar¹,

Rodenburg

Dieng

et al. 2020

J Agronomy Crop Science

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“…Thus, the objective of this study is to analyze the efficiency and transformation of the agricultural production system in the Ibirapuitã EPA through nitrogen input and output flows. Studies in this sense are useful for understanding the efficiency of agricultural production systems and how they interfere with the environment [13][14][15].…”

Section: Introductionmentioning

confidence: 99%

Nitrogen Fluxes in an Agro-Livestock System under Land Use Change: A Temporal Analysis in an Environmental Protection Unit

Rhoden,

Almeida Viana,

Pires Silveira

et al. 2023

Agriculture

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In recent decades, significant changes have driven the advancement of agricultural production systems in Brazil. The objective of this study is to analyze the efficiency and transformation of the agricultural production system in the Ibirapuitã Environmental Preservation Area (EPA) through nitrogen input and output flows. Methodologically, the approach is considered mixed, consisting of a case study and based on quantitative and qualitative techniques. Flowcharts and indicators were elaborated to evaluate nitrogen flows over time. The results were confirmed through semi-structured interviews. The results indicated that production based on economic efficiency is one of the main factors transforming the livestock system. The transformation of the production system into livestock did not reduce nitrogen flows. Productive and economic indicators reaffirm the transformation and volatility of livestock systems under economic and political contexts, even in an environmental protection unit.

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“…Source: The authors sorted out and calculated the results according to the scattered data in relevant literatures[23][24][25].…”

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confidence: 99%

Evaluation and Influencing Factors of Agricultural Green Efficiency in Jianghuai Ecological Economic Zone

Tang

Boamah

et al. 2021

Sustainability

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Traditionally, in the pursuit of economic development, ecological health was sacrificed, but this is no longer tenable considering the vast environmental damage that is difficult to control and expensive to repair. This is especially true for China’s Jianghuai River Basin (JRB). As a result, this paper uses the slacks-based measure (SBM) directional distance function and the tobit model on panel data from various cities and counties in the Jiangsu section of the HRB to empirically analyze regional green agricultural production efficiency and influencing factors from 2005 to 2019. The results illustrate that agricultural and environmental efficiency fluctuate upward in provincial areas. Still, a downward trend is observed in both redundancy and insufficiency rates of undesirable and desirable output. While this indicates improving regional agricultural and environmental efficiency, there is no readily detectable positive effect of technological progress and technical efficiency on green agricultural production efficiency improvements. Following a full analysis, policy implications are presented and discussed.

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Effects of changes in agricultural activities on the nitrogen cycle in Khon Kaen Province, Thailand between 1990–1992 and 2000–2002

Abstract: As the Thai economy

Cited by 11 publications

References 20 publications

Quantifying rice yield gaps and their causes in Eastern and Southern Africa

Quantifying rice yield gaps and their causes in Eastern and Southern Africa

Nitrogen Fluxes in an Agro-Livestock System under Land Use Change: A Temporal Analysis in an Environmental Protection Unit

Evaluation and Influencing Factors of Agricultural Green Efficiency in Jianghuai Ecological Economic Zone

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