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Empirical Analysis on Economic Sustainable of Rice Rain-Fed Area in Rural Cambodia

Received: 30 May 2024    Accepted: 15 June 2024    Published: 27 June 2024
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Abstract

This paper investigates the economic sustainability of Cambodian rural rice farmers. Rice in Cambodia is a stable crop just as in many other Southeast Asian countries. The rice plants not only provide food to people but also a source of feed for livestock. Based on survey about of 6 districts of the rural household in Battambang of Cambodia, a total 204 rice farmers were interviewed and multiple regression models was applied using the method of Ordinary Least Squares (OLS) to determine the factors affecting the Crop-livestock farmers’ disposable income. The study aggregated the livestock of 3 species including cattle, pig and chicken in cattle unit standard known as Livestock Unit (LU). The result of the empirical analysis shows that many household demography factors as well as the socioeconomic factors influences the disposable income. The findings in the study provide an insight to the government and extension offices on effective development of economic sustainability of rice farming and livestock production system in the regions; investing more in public animal healthcare; ensure stable market prices for both rice and livestock, paying more attention on the factors limiting income in particular to poorer provinces and districts. Provide irrigation facilities accompanied with high technological varieties to encourage the double or even triple rice seasons. In addition, government (especially the ministry of agriculture) should embark on technological transfer among provinces and countries with successful agricultural system, orient farmers on the potential benefits of crop-livestock farming, provide training ground and scheme to local farmers.

Published in American Journal of Agriculture and Forestry (Volume 12, Issue 3)
DOI 10.11648/j.ajaf.20241203.18
Page(s) 217-222
Creative Commons

This is an Open Access article, distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution and reproduction in any medium or format, provided the original work is properly cited.

Copyright

Copyright © The Author(s), 2024. Published by Science Publishing Group

Keywords

Sustainable Income, Rice Rain-Fed, Livestock, Battambang, Cambodia

1. Introduction
Sustainable farming is the simultaneous integration of environmental, economic and social factors into farm management taking into cognizance the nature base of the farm, covering the financial aspect (profitability) and the decision made by the farmer depending on their family demography. According to Richard , sustainable agriculture is the production processes of both crop and livestock which provides abundant output with little or no adverse effect on earth’s resources or pollution of the environment. Today’s agricultural practices pose serious challenges to the protection of natural, healthy and functioning ecosystem. Rice is produced in many ecosystems, each with specific variety of seed. Examples of this ecosystem include rain-fed lowland, rain-fed upland, deep-water, and irrigated ecosystem. Globally, rice grown under rain-fed ecosystem accounts for about 29% of the 140 million hectare and more than 90% of the rain-fed ecosystem are located in South and Southeast Asia .
Cambodia is an agrarian country spreading approximately 85.3% of the total 3.3 million hectares cultivation area under rain-fed conditions . Rice production contributes immensely to Cambodian economy and it’s critical to food security or the 18 million people in the country . The annual paddy rice production is about 9.5 million MT (5.7 million MT, milled basis) with an increase of 200,000 MT from year 2015 , and expect in 2018 about 10.85 million MT . According to FAOSTAT , rice yield in Cambodia (3.3 MT/ha) comparably to the neighboring countries is relatively low; Laos (4.2 MT/ha), Vietnam (5.8 MT/ha) and Thailand (3.1 MT/ha). In Cambodia, rice is grown on diverse landscape of the different ecosystem as mentioned above. Most of the rain-fed lowland areas in Cambodia are located around the Tonle Sap reservoirs, Tonle-Basaac River and Mekong River . Cambodian rice growing regions experiences distinct wet and dry season. Significant percentage (90%) of the total wet season rice area is rain-fed lowland. It was estimated that roughly 80% of the national rice production occurs in the wet season covering over 86% of the rice area and the dry season (irrigated) accounting for 20% of the rice production with 14% of the total rice area . This paper investigates the economic sustainability of Cambodian rural rice farmers using multiple regression models to estimate socio and economics factors affecting their disposable income. It also provides guidelines to farmers, extension officers and policy makers as to ways of improving rain-fed rice production.
2. The Conceptual Framework
The framework of farmers’ behavior towards rain-fed rice area in rural Cambodia is conceptualized and presented in Figure 1. In rural Cambodia, rice production is one of the main sources of income for rural farmer by selling, source of food, source of feed for livestock, and seed for next season cultivation. Income from selling rice is mostly spend on fertilizer and other agrochemicals and in addition, some farmers purchase new breed for another season, rent machines for ploughing and harvesting and wages paid to laborers. In most cases, many famers work outside their farms as a form of earning extra income. Farmers also spend some portion of the income on their children’s’ education beside the social activities/ceremonies such as weddings and festivals. In other cases, some farmers choose to create their own small business.
Figure 1. The conceptual framework of farmer behaviors in rice rain-feed area in rural Cambodia.
The local soil, whether conditions and availability of water has in the long history of rice production been favorable to the Cambodian farmers; rice has been an important source of food for human more so a huge potential source of livestock feed in the community. The annual rice harvest mostly includes the rice straw and paddy rice. Further supply chain widens the final stage of rice such as the rice bran and broken rice. In Cambodia, rice straws are predominantly used as feed composition for cattle and other ruminant animals especially in the rural regions, and rice bran as feed for pigs and paddy/broken rice as feed for chicken. Given the assumption of resource constraints, an additional livestock into the existing farm structure would require a reduction in the head count of the initial livestock raised.
For instance, if a farmer is faced with limited resources (income/feed) and the farmer wishes to bring additional livestock (pig and chicken), for the farmer to manage these livestock under his constraint, there is need to reduce the number of cattle. Another constraint to the size of livestock is the spread of diseases. Other factors such as household size, number of children (student) can easily influence the perception of farmers towards raising livestock to either increase or reduce or substitute a livestock to another still within the range of the farmer’s economic constraint.
3. Materials and Methods
3.1. Data and Descriptive Statistics
The data used in this study were collected with structure survey in18 villages of 6 districts of the rural households in Cambodia. In total, 204 farmers were interviewed. Data collected were processed and analyzed in Agricultural Information Institute (AII) of Chinese Academy of Agricultural Sciences (CAAS) Beijing. The north-western of Cambodia is known for having long history of traditional rice farming and it is an important rice growing province. Battambang is one the province in the Tonle Sap reservoir, the rice area is about 307.575 ha achieving an estimated rice yield of 2.8 MT/ha in wet season and 3.8 MT/ha in dry season, totally producing an annual paddy rice of 795 611MT . Besides rice farming that is during the off season, farmer search for part-time work/jobs in either public or private company providing them some stipend to support their family or next season farming (in this context we referred to this as off-farm jobs).
Table 1 shows the effectiveness household head with or without off-farm jobs. About 19% of the interviewed farmers had an off-farm job and the remaining 81% without off-farm job (focusing only on their farm). With inadequate rice technology and irrigation system, the farmers can only farm in a single or double season and during the off seasons, they tend to work outside to increase family income. In the table below, farmers without off-farm job have less land size compared with farmers with off-farm jobs (about 2.67 ha and 2.85 respectively). More so, because the farmers with off-farm job earn extra income, their disposable income is higher compared to farmers without off-farm jobs. Moreover, with much disposable income they can manage more livestock compared to their counterpart. According to author , the livestock unit coefficients are basically exchanging ratio among different livestock species in south Asia coefficients. In this study, we adapt this conversion ratio to cattle referred to as livestock standard in cattle unit coefficients “lu” where one head of cattle is about 0.4 pig and 0.02 chicken.
Table 1. Descriptive statistics of the farmers with and without off-farm jobs.

Variables

Data Description

Non-off-farm job

Off-farm job

Number

Mean

Number

Mean

area_rice

Rice area for farmer household working

166

2.67

38

2.85

age_hh

Age for household farmer

166

44.78

38

53.18

edu_hh

Education level for household head

166

5.42

38

4.11

size_labor

Labour size per household

166

2.75

38

4.26

size_family

Family size in household

166

4.31

38

5.61

n_offlabor

Number of labour for off-farm job

166

0

38

1.74

lu

livestock standard in cattle unit coefficients

166

7.83

38

8.33

di_income

Disposable income (*1000riel)

166

3192.95

38

8903.18

3.2. Modeling Households’ Income Impacts
All data from the research were entered into EpiData software after which was transferred into STATA software for data generation and regression and analysis. Base on author widely tool in econometrics, multiple regression models using Ordinary Least Squares (OLS) are considered relating individual performance on the family income as a dependent variable and a set of demographic variables including cultivation area for rice, household education, family size, farmer’s age and size of labor. Other variables specific to income are off-farm job and livestock standard in cattle unit coefficients. The econometric analysis is shown in the constructed models below:
(1)
The constants β0, β1…. β7 are the coefficients of parameters of the econometric model that demonstrated the direction and strengths of the relationship between Yincome and the demographic and socioeconomic factors of the household farmers while the εi is explain the error term assumed to be distributed logistic. The “ln” after the coefficients is the logarithms of the variables.
4. Results and Discussions
The result from the multiple regression models demonstrates the relationship and significance of household income influenced by factors of the household demography among these factors include rice area, farmer’s age, household labor size, family size, off-farm job and others mentioned in Table 2 below. The equation explains that all the variables in the model depict a 33.7% of variation in household income. The size of farmers’ rice cultivated area (area_rice) is noticeably positive with 5% level of significant. If the rice cultivated area increases by1%, the family income would significant increase 37.8%. The proportion of the total land size brings high potential to crop and livestock management thus more investment and proper utilization of land is paramount to rice economic sustenance. The more the household labor the higher is expected for the household income to increase as the number not only provide labor but income from off-farm jobs as well. In the regression, with just 1% increase in household size, income is expected to increase by 40.3% likewise the household with off-farm jobs positively influencing income (1% level of significance) explaining that with a one percent increase in off-farm jobs, household income should increase by 58.3%. The off-farm job provides the highest form of increasing farmer’s income in the model.
The empirical result estimation the household income among the districts (Banan, Moung Ruessei, Ratanak Mondul, Sangkae, Thma Koul) compared with the base district 1(Aek Phnum) illustrate that there is positive 5% significant difference in district 2 (Banan) and district 5 (Sangkae) expressing to about 70.1% and 66.5% respectively. This shows that there is an unbalance income among the districts of Battambang.
5. Conclusions and Recommendation
Rice production plays a crucial role to Cambodian economic development. Rice as a stable crop in Cambodia just as in many other South Asian countries is paramount to food security and thus its sustainability cannot be overemphasized. The rice plants not only provide food to people but also a source of feed for livestock which in turn provides addition source of income to the farmers. The rice production provides residues (rice straw, rice bran, broken rice) to support livestock management. However, with limited resources and other constraints such as diseases, farmers are faced with big decisions.
Table 2. The regression results of household income.

Variable

Definitions

Empirical models

Coef.

T-value

P>T

lnarea_rice

Logarithm of Rice area for farmer household

0.378 **

2.44

0.016

lnedu_hh

Logarithm of household’s education

-0.007

-0.24

0.807

lnage_hh

Logarithm of household head’s age

0.722 **

1.92

0.056

lnsize_labor

Logarithm of size labour

0.403***

3.26

0.001

lnsize_family

Logarithm of size family

0.557 *

1.54

0.126

n_offlabor

Number of labour for off-farm job

0.583 ***

4.3

0.000

lnlu

Logarithm livestock standard in cattle units coefficients

-0.092

-0.59

0.557

_Idistrict_2

Banan

0.701 **

1.97

0.050

_Idistrict_3

MoungRuessei

-0.271

-0.8

0.425

_Idistrict_4

RatanakMondol

0.556

1.35

0.179

_Idistrict_5

Sangkae

0.665 **

2.16

0.032

_Idistrict_6

ThmaKoul

0.425

1.21

0.229

_cons

_cons

2.657 **

1.98

0.049

No. of obs.

No. of obs.

202

R-squared

R-squared

0.3367

Adj R-squared

Adj R-squared

0.2946

Note: *10% level significant; **5% level significant; ***1% level significant
According to the study, the size of household labor, off-farm jobs, size of rice area, age of the household head and family size have strong impact on the farmers’ disposal income. Among these factors, the off-farm jobs and number of laborers in the family depict the highest significance level compared to other factors. This is possible because with large families comes less production cost and availability of labor more so the members of the family can easily support the family by having an off-farm job which in turn increases the disposable income of the household. The larger the farm lands the more benefit the famers get as this provides larger rice production increasing income, food and residue for the livestock.
On these points, government should invest more in public animal healthcare; ensure stable market prices for both rice and livestock, paying more attention on the factors limiting income in particular to poorer provinces and districts. Provide irrigation facilities accompanied with high technological varieties to encourage the double or even triple rice seasons. In addition, government (especially the ministry of agriculture) should embark on technological transfer among provinces and countries with successful agricultural system, orient farmers on the potential benefits of crop-livestock farming, provide training ground and scheme to local farmers.
Abbreviations

AII

Agricultural Information Institute

CAAS

Chinese Academy of Agricultural Sciences

UME

University Management and Economic

RUA

Royal University of Agriculture

STATA

Statistics and Data Science

OLS

Ordinary Least Squares

LU

Livestock Unit

MT

Metric Ton

Ha

Hectare

Acknowledgments
This paper was highly appreciate Pun Robarng, Chhoep Dany, Chay Samoeurn, Son Boren, Moun Sovannara, Doeurn Va, SuoSinoeun and Din Chamroeun, the graduate student of University Management and Economic (UME) and Royal University of Agriculture (RUA) for their contribution.
Conflicts of Interest
The authors declare no conflicts of interest.
References
[1] CAC (2015) Census of Agriculture in Cambodia 2013, National Report on Final Census Results. National Institute of Statistics, Ministry of Planning in collaboration with the Ministry of Agriculture, Forestry and Fisheries, Cambodia.
[2] Chilonda P and Otte J 2006: Indicators to monitor trends in livestock production at national, regional and international levels. Livestock Research for Rural Development. Volume 18, Article #117. Retrieved December 20, 2016, from
[3] FAO (2016) FAO Rice Market Monitor (RMM), Trade and Markets Division, Food and Agriculture Organization of the United Nations, Volume XIX issue No. 3
[4] FAOSTAT (2016) Online Database, Food and Agriculture Organization of the United Nation (accessed December 18, 2016)
[5] Fujisaka S. Rainfed lowland rice: building research on farmer practice and technical knowledge, Agric. Ecosyst. Environ. 33 (1) (1990) 57–74.
[6] GRiSP (Global Rice Science Partnership) (2013) Rice almanac, 4th edition. Los Baños (Philippines): International Rice Research Institute. 149 p.
[7] Hutcheson, G. D. (2011). Ordinary Least-Squares Regression. In L. Moutinho and G. D. Hutcheson, The SAGE Dictionary of Quantitative Management Research. Pages 224-228.
[8] Jeffrey M. Wooldridge (2009), Introductory Econometrics: A Modern Approach, 4th ed., Cengage Learning. Chapters 3 - 7.
[9] Ly, P., Jensen, L. S., Bruun, T. B., & de Neergaard, A. (2015). Factors explaining variability in rice yields in a rain-fed lowland rice ecosystem in Southern Cambodia. NJAS - Wageningen Journal of Life Sciences, 78, 129–137.
[10] MAFF (2014) Agricultural Statistic in 2013, Ministry of Agriculture, Forestry and Fisheries.
[11] MAFF (2015) Ministry of Agriculture, Forestry and Fisheries, Agricultural Sector Strategic Development Plan 2014-2018, Kingdom of Cambodia.
[12] NSDP (2015). National Strategic development Plan 2014-2018, Royal Government of Cambodia. Phnom Penh, Cambodia.
[13] Richard Earles, Paul Williams, Robyn Metzger (2005). Sustainable Agriculture: An Introduction (ATTRA).
[14] Shean Michael (2010) Commodity Intelligence Report, United State Department of Agriculture, Foreign Agriculture Service. (USDA-FAS).
[15] Stock, James H. and Mark W. Watson (2015), Introduction to Econometrics, 3rd ed., Pearson Addison-Wesley. Chapters 4-9.
[16] Vin Sareth (2015) The study on rice trade between Cambodia and the Greater Mekong Sub region: China, Thailand and Vietnam. Chinese Academy of Agricultural Science Dissertation.
[17] World Bank (2016). World Development Indicators (accessed December 17, 2016)
[18] Zeigler R. S., D. W. Puckridge, Improving sustainable productivity in rice-based rain-fed lowland systems of South and Southeast Asia, Geo Journal 35(3) (1995) 307–324.
Cite This Article
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    Siek, D., Emmsethakar, S., Yu, W., Xu, S., Bunna, S., et al. (2024). Empirical Analysis on Economic Sustainable of Rice Rain-Fed Area in Rural Cambodia. American Journal of Agriculture and Forestry, 12(3), 217-222. https://doi.org/10.11648/j.ajaf.20241203.18

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    Siek, D.; Emmsethakar, S.; Yu, W.; Xu, S.; Bunna, S., et al. Empirical Analysis on Economic Sustainable of Rice Rain-Fed Area in Rural Cambodia. Am. J. Agric. For. 2024, 12(3), 217-222. doi: 10.11648/j.ajaf.20241203.18

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    AMA Style

    Siek D, Emmsethakar S, Yu W, Xu S, Bunna S, et al. Empirical Analysis on Economic Sustainable of Rice Rain-Fed Area in Rural Cambodia. Am J Agric For. 2024;12(3):217-222. doi: 10.11648/j.ajaf.20241203.18

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  • @article{10.11648/j.ajaf.20241203.18,
      author = {Darith Siek and Sun Emmsethakar and Wen Yu and Shiwei Xu and Sun Bunna and Siek Sourphimean and Siek Sourchhordaphear},
      title = {Empirical Analysis on Economic Sustainable of Rice Rain-Fed Area in Rural Cambodia
    },
      journal = {American Journal of Agriculture and Forestry},
      volume = {12},
      number = {3},
      pages = {217-222},
      doi = {10.11648/j.ajaf.20241203.18},
      url = {https://doi.org/10.11648/j.ajaf.20241203.18},
      eprint = {https://article.sciencepublishinggroup.com/pdf/10.11648.j.ajaf.20241203.18},
      abstract = {This paper investigates the economic sustainability of Cambodian rural rice farmers. Rice in Cambodia is a stable crop just as in many other Southeast Asian countries. The rice plants not only provide food to people but also a source of feed for livestock. Based on survey about of 6 districts of the rural household in Battambang of Cambodia, a total 204 rice farmers were interviewed and multiple regression models was applied using the method of Ordinary Least Squares (OLS) to determine the factors affecting the Crop-livestock farmers’ disposable income. The study aggregated the livestock of 3 species including cattle, pig and chicken in cattle unit standard known as Livestock Unit (LU). The result of the empirical analysis shows that many household demography factors as well as the socioeconomic factors influences the disposable income. The findings in the study provide an insight to the government and extension offices on effective development of economic sustainability of rice farming and livestock production system in the regions; investing more in public animal healthcare; ensure stable market prices for both rice and livestock, paying more attention on the factors limiting income in particular to poorer provinces and districts. Provide irrigation facilities accompanied with high technological varieties to encourage the double or even triple rice seasons. In addition, government (especially the ministry of agriculture) should embark on technological transfer among provinces and countries with successful agricultural system, orient farmers on the potential benefits of crop-livestock farming, provide training ground and scheme to local farmers.
    },
     year = {2024}
    }
    

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  • TY  - JOUR
    T1  - Empirical Analysis on Economic Sustainable of Rice Rain-Fed Area in Rural Cambodia
    
    AU  - Darith Siek
    AU  - Sun Emmsethakar
    AU  - Wen Yu
    AU  - Shiwei Xu
    AU  - Sun Bunna
    AU  - Siek Sourphimean
    AU  - Siek Sourchhordaphear
    Y1  - 2024/06/27
    PY  - 2024
    N1  - https://doi.org/10.11648/j.ajaf.20241203.18
    DO  - 10.11648/j.ajaf.20241203.18
    T2  - American Journal of Agriculture and Forestry
    JF  - American Journal of Agriculture and Forestry
    JO  - American Journal of Agriculture and Forestry
    SP  - 217
    EP  - 222
    PB  - Science Publishing Group
    SN  - 2330-8591
    UR  - https://doi.org/10.11648/j.ajaf.20241203.18
    AB  - This paper investigates the economic sustainability of Cambodian rural rice farmers. Rice in Cambodia is a stable crop just as in many other Southeast Asian countries. The rice plants not only provide food to people but also a source of feed for livestock. Based on survey about of 6 districts of the rural household in Battambang of Cambodia, a total 204 rice farmers were interviewed and multiple regression models was applied using the method of Ordinary Least Squares (OLS) to determine the factors affecting the Crop-livestock farmers’ disposable income. The study aggregated the livestock of 3 species including cattle, pig and chicken in cattle unit standard known as Livestock Unit (LU). The result of the empirical analysis shows that many household demography factors as well as the socioeconomic factors influences the disposable income. The findings in the study provide an insight to the government and extension offices on effective development of economic sustainability of rice farming and livestock production system in the regions; investing more in public animal healthcare; ensure stable market prices for both rice and livestock, paying more attention on the factors limiting income in particular to poorer provinces and districts. Provide irrigation facilities accompanied with high technological varieties to encourage the double or even triple rice seasons. In addition, government (especially the ministry of agriculture) should embark on technological transfer among provinces and countries with successful agricultural system, orient farmers on the potential benefits of crop-livestock farming, provide training ground and scheme to local farmers.
    
    VL  - 12
    IS  - 3
    ER  - 

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Author Information
  • Regional Polytechnic Institute Techno Sen Battambang, Ministry of Laboure and Vocational Training, Phnom Penh, Cambodia; Agricultural Information Institute, Chinese Academy of Agricultural Sciences, Beijing, China

  • Siek Sour Company, Battambang, Cambodia

  • Agricultural Information Institute, Chinese Academy of Agricultural Sciences, Beijing, China

  • Agricultural Information Institute, Chinese Academy of Agricultural Sciences, Beijing, China

  • Department of Curriculum Development, Ministry of Education Youth and Sports, Phnom Penh, Cambodia

  • Siek Sour Company, Battambang, Cambodia

  • Siek Sour Company, Battambang, Cambodia