Impacts of Crop Production and Value Chains on Household Food Insecurity in Kwazulu-Natal: An Ordered Probit Analysis
Abstract
:1. Introduction
2. Materials and Methods
2.1. Study Site and Sampling Procedure
2.2. Data Collection and Sampling
2.3. Analytical Framework
1 if µ1 < Y* ≤ µ2
2 if µ2 < Y* ≤ µ3
3 if µ3 < Y* ≤ ∞
2.4. Data Analytical Methods
2.4.1. Food Security Measurement
- A household categorised as HFIA category 1 rarely encounters food access issues and typically experiences worries (Household Food Insecurity Access Scale (HFIAS) [26].
- For HFIA category 2, a mildly food-insecure household occasionally or frequently expresses concerns about insufficient food, leading to a less varied diet.
- HFIA category 3 represents a moderately food-insecure household that often sacrifices food quality, occasionally reducing meal quantity [26].
- In HFIA category 4, a severely food-insecure household takes more extreme measures, cutting down on meal size or facing severe conditions like running out of food [26].
2.4.2. Principal Component Analysis
2.5. Empirical Model: Ordered Probit Model
3. Results and Discussion
3.1. Descriptive Analysis Results
3.2. Multicollinearity Test of Variables
3.3. Principal Component Analysis Results
3.4. Impact of the Interaction between Crop Production Systems and Value Chains on Household Food Security
4. Conclusions and Recommendations
Author Contributions
Funding
Institutional Review Board Statement
Informed Consent Statement
Data Availability Statement
Acknowledgments
Conflicts of Interest
References
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No | Question (Q) | Response Options 0 = No 1 = Yes | If Yes, How Often Did This Happen? 1 = Rarely 2 = Sometimes 3 = Often |
---|---|---|---|
1. | In the past four (4) weeks, did you worry that your household would not have enough food? | ||
2. | In the past four (4) weeks, were you, or any household member, not able to eat the kind of food you preferred because of a lack of resources? | ||
3. | In the past four (4) weeks, did you, or any household member, have to eat a limited variety of foods due to a lack of resources? | ||
4. | In the past four (4) weeks, did you, or any household member, have to eat some foods that you really did not want to eat, because of a lack of resources to obtain other types of food? | ||
5. | In the past four (4) weeks, did you, or any household member, have to eat a smaller meal than you felt you needed because there was not enough food? | ||
6. | In the past four (4) weeks, did you, or any household member, have to eat fewer meals in a day, because of a lack of resources to obtain food? | ||
7. | In the past four (4) weeks, was there ever no food of any kind to eat in your household, because of a lack of resources to obtain food? | ||
8. | In the past four (4) weeks, did you, or any household member, go to sleep hungry at night because there was not enough food? | ||
9. | In the past four (4) weeks, did you, or any household member, go a whole day and night without eating anything, because there was not enough food? |
Value Chain Variables | Production System Variables |
---|---|
Reliance on traditional knowledge and practices | Crop yield per unit area |
Traceability and labelling practices | Use of synthetic fertilisers |
Direct marketing channels | Use of chemical pesticides |
Organic certification | Use of traditional seed varieties |
Post-harvest handling practices | Reliance on traditional knowledge and practices |
Wholesale market | Use of natural pest control methods |
Local market integration (local markets) | Use of organic fertilisers |
Traditional value-added products | Agrobiodiversity |
Dependent Variable | Measurements | Expected Sign | Rationale |
---|---|---|---|
HFIAS | 1 = Food secure, 2 = Mildly food insecure, 3 = Moderately food insecure, and 4 = Severely food insecure | Household food security status, measured by using HFIAS. | |
Independent variables | |||
Hsize | Continuous variable measuring the number of people in the household | + | Larger households may have higher food requirements and face challenges in meeting those needs [30]. |
Age | Number of years of the household head | − | Older household heads have more farming experience and are less likely to be food insecure [31]. |
Education | 0 = No school, 1 = Primary, 2 = Secondary, 3 = Tertiary | − | Higher education levels are often associated with better income potential and resource access, which can negatively affect food insecurity [31]. |
Livestock | Number of livestock owned by a household | − | Households with more livestock may be better equipped to ensure their food security [32]. |
Household food expenditure | 0 = Low (≤60% total expenditure), 1 = High (>60% total expenditure) | − | Higher food expenditure may show better food security, which suggests that a larger amount of income is allocated to food [32]. |
Occupation | 0 = non-Farmer 1 = Farmer | − | Farmers may have more direct control over food production and better access to nutritious food than non-farmers [33]. |
Remittances | Receives remittances 0 = No, 1 = Yes | − | Remittances, i.e., money sent by family members working in other locations, can contribute to household income and improve food security by increasing its purchasing power [31]. |
Floods | Affected by floods 0 = No, 1 = Yes | + | Floods can have a significantly negative impact on agricultural production and food security [34]. |
Cash credit | Access to cash credit 0 = No, 1 = Yes | − | Households with access to cash credit may manage unexpected expenses and ensure food availability [35]. |
Modern agro-production practices (PC1) | Factor score | −/+ | Modern agro-production practices, such as the use of synthetic fertilisers and chemical pesticides, are known to influence crop yields and agricultural productivity. Including a PC1 allows us to investigate how modern farming techniques may affect food insecurity levels. |
Sustainable market integration (PC2) | Factor score | −/+ | Sustainable market integration can enhance market access, income diversification, and supply chain efficiency, which potentially affects food availability and accessibility. Including PC2 enables us to explore the role of market-oriented approaches in mitigating food insecurity. |
Traditional knowledge (PC3) | Factor score | −/+ | Traditional knowledge encompasses time-tested farming practices and local ability, which potentially contributes to agricultural resilience and sustainable resource management. Including PC3 allows us to assess the influence of traditional knowledge on food security outcomes. |
Variables | Measure | Food Secure (n = 107) 36% | Mildly Food Insecure (n = 99) 33% | Moderately Food Insecure (n = 66) 22% | Severely Food Insecure (n = 28) 9% | X2 |
---|---|---|---|---|---|---|
Education | 1 = No School | 53.27 | 41.41 | 46.97 | 28.57 | ** |
2 = Primary | 23.36 | 24.24 | 13.64 | 14.29 | ||
3 = Secondary | 18.82 | 30.30 | 31.82 | 50 | ||
4 = Tertiary | 6.54 | 4.04 | 7.58 | 7.14 | ||
Household food expenditure | 0 = Low | 56.60 | 61.62 | 57.58 | 64.29 | n.s |
1 = High | 43.40 | 38.38 | 42.42 | 35.71 | ||
Occupation | 0 = non-farmer | 57.94 | 57.58 | 53.03 | 75 | n.s |
1 = Farmer | 42.06 | 42.42 | 46.97 | 25 | ||
Remittances | 0 = No | 52.34 | 41.41 | 51.52 | 67.86 | * |
1 = Yes | 47.66 | 58.59 | 48.48 | 32.14 | ||
Floods | 0 = No | 53.27 | 60.61 | 62.12 | 64.29 | n.s |
1 = Yes | 46.73 | 39.39 | 37.88 | 35.71 | ||
Cash credit | 0 = No | 93.46 | 93.94 | 96.97 | 100 | n.s |
1 = Yes | 6.54 | 6.06 | 3.03 | 0 |
Variables | Food Secure | Mildly Food Insecurity | Moderately Food Insecurity | Severe Food Insecurity | F Significance | ||||
---|---|---|---|---|---|---|---|---|---|
Mean | Std. Dev. | Mean | Std. Dev. | Mean | Std. Dev. | Mean | Std. Dev. | ||
Household size | 8 | 4.29 | 7 | 4.42 | 8 | 4.11 | 8 | 3.22 | n.s |
Age | 53 | 13.28 | 51 | 13.26 | 54 | 14.85 | 49 | 14.43 | n.s |
Livestock owned | 22 | 0.88 | 18 | 1.85 | 11 | 1.98 | 3 | 2.56 | *** |
Variable | VIF | 1/VIF |
---|---|---|
Modern agro-productivity practices | 3.66 | 0.27 |
Floods | 3.02 | 0.33 |
Household food expenditure | 1.44 | 0.69 |
Age | 1.39 | 0.72 |
Education | 1.26 | 0.79 |
Livestock owned | 1.21 | 0.82 |
Occupation | 1.15 | 0.87 |
Remittances | 1.12 | 0.89 |
Traditional knowledge focus | 1.09 | 0.92 |
Sustainable market integration | 1.09 | 0.92 |
Household size | 1.03 | 0.97 |
Cash credit | 1.01 | 0.99 |
Mean VIF | 1.54 |
Variable | PC1—Modern Agro-Productivity Practices | PC2—Sustainable Market Integration | PC3—Traditional Knowledge Focus |
---|---|---|---|
Crop yield per unit area | 0.571 | 0.036 | 0.336 |
Use of synthetic fertilisers | 0.738 | 0.143 | −0.017 |
Use of chemical pesticides | 0.118 | −0.090 | 0.110 |
Use of traditional seed varieties | 0.134 | 0.284 | 0.228 |
Reliance on traditional knowledge and practices | −0.227 | 0.462 | 0.526 |
Traceability and labelling practices | −0.104 | 0.474 | −0.379 |
Direct marketing channels | −0.089 | 0.023 | 0.432 |
Use of natural pest control methods | 0.034 | 0.562 | 0.254 |
Use of organic fertilisers | −0.179 | 0.416 | 0.182 |
Organic certification | −0.004 | 0.470 | −0.517 |
Post-harvest handling practices | −0.018 | 0.455 | −0.142 |
Market integration (wholesale market) | −0.246 | 0.479 | −0.430 |
Agrobiodiversity | 0.826 | 0.207 | 0.066 |
Local market integration (local markets) | 0.712 | 0.175 | 0.210 |
Traditional value-added products | −0.055 | 0.035 | −0.135 |
Eigenvalue | 2.258 | 1.769 | 1.419 |
Proportion | 15.06% | 11.79% | 9.46% |
Cumulative | 15.06% | 26.85% | 36.31% |
KMO | 0.615 | ||
Alpha | 0.386 |
Variables | Coef. | Std. Err. | p-Value | Marginal Effects | |||
---|---|---|---|---|---|---|---|
Food Secure | Mildly Food Insecure | Moderately Food Insecure | Severely Food Insecure | ||||
Modern agro-productivity practices | 0.051 | 0.055 | 0.349 | 0.018 | −0.001 | −0.008 | −0.008 |
Sustainable market integration | −0.228 | 0.078 | 0.003 *** | −0.078 * | 0.005 | 0.037 ** | 0.037 *** |
Traditional knowledge focus | −0.113 | 0.067 | 0.094 * | −0.039 ** | 0.002 | 0.018 * | 0.018 * |
Household size | 0.026 | 0.009 | 0.004 *** | 0.009 *** | −0.001 | −0.004 *** | −0.004 *** |
Age | 0.004 | 0.005 | 0.438 | 0.001 | −0.000 | −0.001 | −0.001 |
Education | −0.202 | 0.073 | 0.006 *** | −0.069 * | 0.004 | 0.033 *** | 0.032 *** |
Livestock owned | −0.022 | 0.007 | 0.001 *** | −0.008 *** | 0.000 | 0.004 *** | 0.004 *** |
Occupation | 0.067 | 0.140 | 0.634 | 0.023 | −0.001 | −0.011 | −0.011 |
Household food expenditure | 0.454 | 0.170 | 0.008 *** | 0.156 *** | −0.010 | −0.073 *** | −0.073 ** |
Remittances | 0.165 | 0.133 | 0.214 | 0.057 | −0.004 | −0.027 | −0.026 |
Floods | 0.260 | 0.152 | 0.088 * | 0.089 * | 0.006 | 0.042 ** | 0.042 * |
Cash Credit | 0.562 | 0.307 | 0.067 * | 0.193 * | −0.012 | −0.091 * | −0.090 * |
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Cele, T.; Mudhara, M. Impacts of Crop Production and Value Chains on Household Food Insecurity in Kwazulu-Natal: An Ordered Probit Analysis. Sustainability 2024, 16, 700. https://doi.org/10.3390/su16020700
Cele T, Mudhara M. Impacts of Crop Production and Value Chains on Household Food Insecurity in Kwazulu-Natal: An Ordered Probit Analysis. Sustainability. 2024; 16(2):700. https://doi.org/10.3390/su16020700
Chicago/Turabian StyleCele, Thobani, and Maxwell Mudhara. 2024. "Impacts of Crop Production and Value Chains on Household Food Insecurity in Kwazulu-Natal: An Ordered Probit Analysis" Sustainability 16, no. 2: 700. https://doi.org/10.3390/su16020700