Smallholder Production Diversity
Farm production diversity of smallholder households was assessed taking agricultural commodities emanating from both crop and livestock components. It was used as an indicator of the economic capability of diversified food at the household level that smallholder agriculture is contributing. Irrespective of the quantity produced; smallholder households in northwest Ethiopia on average produce 6.08 food groups annually with a standard deviation of 2.13. The average farm production diversity of smallholders in northwest Ethiopia is adequate to avail the minimum daily diet diversity recommended by the Ethiopian Food-Based Dietary Guideline [26]. The maximum food group produced at the household level is found to be 11 per annum. 96.83% of smallholder household produce at least three food groups combined from plant and animal sources with modal food groups of 6 per household in a single main production season.
Only 40.6% of smallholder farm households produced agricultural commodities constituting 7 and more food groups and 59.42% 6 food groups more in the area studied. The smallholder households with farm production diversity of 6 food groups constitute 18.83% followed by the proportion of farm households who produced 4 and 7 food group representing 17.78% and 16.53% respectively.
Table 1
Number of food groups produced by smallholders (n = 478)
No. of Food Group | Freq. | Percent |
one | 3 | 0.63 |
two | 12 | 2.51 |
three | 30 | 6.28 |
four | 85 | 17.78 |
five | 64 | 13.39 |
six | 90 | 18.83 |
seven | 79 | 16.53 |
eight | 42 | 8.79 |
nine | 40 | 8.37 |
ten | 23 | 4.81 |
eleven | 10 | 2.09 |
Total | 478 | 100.00 |
Simpson’s index of diversity was used to estimate the farm production diversity of smallholders measured in food groups. The index was used as an indicator for food group richness, which is the total score of different food groups in a sample and food group evenness, which is a relative abundance of each food group. Accordingly, the results of food group richness analysis show that cereals, meat, and vegetables respectively constitute 16.07%, 16.45% & and 13.46% of production scores out of total food groups from annual production of smallholder farm households. Irrespective of the quantity, the share of egg and oilseed production form all annual food groups produced constitute 11.57% and 8.09% respectively. Whereas milk and its products account for 7.23% of the total food group production share at the smallholder household level and followed by tubers and root crops which constitute a 6.33% share of food groups produced. On the other hand, spices and condiments constitute 2.82% of the farm production diversity of smallholders. The share of honey/sweets from all food groups produced annually is found to be 2.48% and followed by fruits and fish production that constitute 2.38% and 1.1% farm production diversity share from all food groups produced annually.
By aggregating all crop and livestock commodities, the overall farm production diversity of smallholder households was also calculated using SDI. As a result, the farm production diversity index (FPDI) is found to be .886 (88.6%) in smallholder households of northwest Ethiopia. This implies that from randomly drawn two agricultural products at the household level, the probability of getting products from different food groups is 88.6%. In another way, from randomly drawn two agricultural products in the household, the probability of getting these commodities from similar food groups is 11.4%. However, the amount of some food groups produced at the household level might not sufficient to meet the quantity required to feed all the household members.
Determinants Of Production Diversity
Smallholder agricultural production is affected by biological (herbs, pests, insects and diseases causing microorganisms); climate variables (rainfall pattern and intensity, wind, and floods); soil fertility, and inputs including agricultural technologies. However, only demographic, socioeconomic and technological variables such are irrigation were considered to see effects on farm production diversity of smallholder households.
Using a count of production scores out of 12 food groups as considered as a response variable, and 13 explanatory variables, a multiple linear regression models was run. The result of the analysis shows that eight explanatory variables include age of the household head, sex of the household head, year of schooling of the head of the household, the farming experience of a household head, number of oxen owned, number of contacts with agricultural extension workers, use of irrigation, and availability of animal feed are statistically significant variables positively affecting farm production diversity of smallholders.
As shown in the table.2, the regression output indicates that holding other factors constant, a year increase in the age of the household head decreases farm production diversity by 0.04 at a 99% of the confidence interval. However, the sex of the household head has a statistically significant positive effect on farm production diversity. Compared to female-headed households, male-headed households make 0.94 more farm production diversity at a 99% of the confidence interval. Similarly, years of schooling of the household head has also a positive impact on the farm production diversity. For each additional year of schooling of the household head, the farm production diversity increases by 0.07 at a 99% of the confidence interval. Likewise, farming experiences and the number of contact with agricultural extension workers have also been positively associated with farm production diversity. Each additional of year of farming experiences and contact with agricultural extension worker results in increases in farm production diversity of smallholders by 0.05 and 0.07 respectively statistically significant at a 99% of the confidence interval.
Table 2
Factors affecting farm production diversity (n = 478)
Total Production Score of household (tpsh) | Coef. | St.Err. | Sig |
Age of household head | − .044 | .016 | *** |
Sex of household head | .942 | .25 | *** |
Year of schooling | .074 | .026 | *** |
The arable land of household | − .028 | .042 | |
Farming experience | .051 | .016 | *** |
Number of oxen | .301 | .066 | *** |
Distance to market | .039 | .031 | |
No. contact with DA | .070 | .026 | *** |
No. productive family members | − .011 | .054 | |
Use of irrigation | .891 | .263 | *** |
Availability of animal feed | .513 | .239 | ** |
Cooperative membership | .158 | .196 | |
Consideration of management | − .049 | .189 | |
Constant | 4.556 | .468 | *** |
Mean dependent var | 6.079 | SD dependent var | 2.129 |
R-squared | 0.224 | Number of obs | 478 |
F-test | 10.314 | Prob > F | 0.000 |
Akaike crit. (AIC) | 1984.768 | Bayesian crit. (BIC) | 2043.143 |
*** p < .01, ** p < .05, * p < .1 |
Given its multiple roles in agricultural production, ox ownership has a positive effect on farm production diversity. Moreover, the model result demonstrates that an additional ox in smallholder farm households increases farm production diversity by 0.30 which is statistically significant at 1% probability. Irrigation schemes, be it small or large scale, are found to be important infrastructure positively affecting diversified production of farm households. The linear regression analysis affirmed that irrigation user farm households make 0.89 more farm production diversity compared to nonusers statistically significant at 1% probability. As it is the major determinant of livestock production, the availability of affordable animal feed has also positively contributed to farm production diversity. Smallholder farm households who have access to affordable animal feeds make 0.51 more diversified agricultural products. However, the arable land of the households and the number of family members under the productive age group are negatively associated with farm diversity but not statistically significant. Though, it is not statistically significant, distance to the nearest market center and memberships to locally available cooperatives are also positively associated with the farm production diversity of smallholders. The finding has consisted with similar research conducted by Mussema et al (2015) in Oromia regions of Ethiopia that agricultural diversification is determined by household asset ownership and agricultural extension services among others.