By Oni, TO
(2022).
Greener
Journal of Agricultural Sciences ISSN: 2276-7770 Vol. 12(3), pp. 195-204, 2022 Copyright ©2022, the copyright of this article is retained by the
author(s) |
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Effects of Production Diversity on Nutrition of
Farming Households in Nigeria.
Department of
Agriculture and Food Policy, Nigerian Institute of Social and Economic Research
(NISER), PMB 5, U.I. Post Office, Ojo, Oyo Road, Ibadan, Oyo State, Nigeria.
ARTICLE INFO |
ABSTRACT |
Article No.: 090522079 Type: Research |
Diets in Nigeria, across population and all
income quintiles are lacking diversity and continue to include too many
calories from staple foods and too few from nutritious foods such as
vegetables, fruits, pulses and nuts, and some animal source-foods. In 2018,
about eight out of every ten children between 6 and 23 months were fed an
insufficiently diversified diet that fell short of a daily minimum. The
paper therefore assessed the extent and effect of farm production diversity
on farm household’s dietary diversity in the country using a cross sectional
data from national representative sample of five states drawn from five
geopolitical zones of Nigeria. Simpson Diversity Index, Household Dietary
Diversity Score (HDDS) and regression technique were used for data
analysis. Results showed a positive
effect of agricultural production diversity on household dietary diversity
score. Household size, sex of household head, extension service and asset
ownership all exert positive and significant effect on dietary diversity of
households practicing farm diversification. Effect of extreme rainfall on
dietary diversity is negative and significant for households practicing
agricultural production diversification. The result shows the importance of
access to extension service in enhancing agricultural production diversity
and strengthening dietary diversity of the farming households. The study
recommends reinforcement of agricultural extension service to boost the
diversity and level of agricultural production. This in turn could lead to
improvement in dietary diversity and nutrition security among rural farming
households. In conclusion, the importance of ownership of assets should be
emphasised at implementation of agricultural development programmes for the
rural farming households for advancing dietary diversity in the rural
sector. |
Accepted: 10/09/2022 Published: 05/10/2022 |
|
*Corresponding
Author Oni, Timothy Olukunle E-mail: olukunleniser2012 @gmail.com Phone: +234 8033950670 |
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Keywords: |
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1.
INTRODUCTION
Agricultural
production diversity is the cornerstone of long-term food supply which
underpins the productivity, resilience and, ultimately, the security of all
food systems. In Africa, more than 250 million people are undernourished and is
growing faster than anywhere in the world (FAO, 2021). Agriculture has the
capacity of influencing nutrition primarily through increased food intake from
own production and also through the channel of increased incomes from
diversification into higher value crops, including horticulture, or livestock
rearing (Kadiyala et al., 2012).
Understanding the nexus between farm production diversity and dietary diversity
is especially relevant in smallholder agriculture and in sub-Saharan Africa
(SSA). On the one hand, undernutrition rates are severe and more widespread
among those involved in agriculture. Lack of dietary diversity is undoubtedly
the major cause of micronutrient malnutrition in sub Saharan Africa (FAO,
2013).
In Nigeria, food
security remains a challenge, where 40 per cent of the population lived below
the national poverty line and many experienced food shortages(IFPRI,2021). Over
the past few years, high inflation rates arising from multiple demand and
supply shocks, compounded by policy distortions and constraints of the COVID-19
global pandemic as well as the ravaging effect of climate change and insecurity
problem in the country, have increased poverty and made food less affordable
(NBS 2020, World Bank,2021). Malnutrition
is equally a major problem in Nigeria. According to UNICEF et al 2021, about 12
million children under-five (35 percent), in the country are stunted. At the
same time, roughly 21 million Nigerians over the age of 15 are overweight and
12 million are obese, about 20 percent and 11 percent, respectively (Adeloye et
al 2021). According to Ecker et al,2020,
coexistence of multiple forms of malnutrition is prevalent and has grown
rapidly in both urban and rural areas.
Admittedly, diets in
Nigeria, across population and all income quintiles are lacking diversity and
continue to include too many calories from staple foods and too few from
nutritious foods such as vegetables, fruits, pulses and nuts, and some animal
source-foods. In 2018, about eight out of every ten children between 6 and 23
months were fed an insufficiently diversified diet that fell short of a daily
minimum of five out of eight food groups, while the proportion of children
lacking the minimum dietary diversity was greatest, 83 per cent in the lowest
wealth quintile of the Nigerian population.
Even among the highest wealth quintile, a large majority of children, 63
per cent consumed inadequately diversified diets (NPC and ICP 2019). Ensuring
agricultural production diversity is critical in meeting the challenge of food
insecurity and healthy nutrition in the country since achievement of the sustainable
goal of ending hunger, and increasing access to healthy diets is a priority
focus of the 2022-2025 Mid-Term Plans
of the Food and Agriculture Organization (FAO,2021) in which Nigeria is an important
participant. Although Nigeria is well
noted for vast food production, malnutrition is still a major challenge due to
poor diversity coupled with climate change and high insecurity. The prevalence
of poor nutrition is of concern especially when the availability and
accessibility of nutritionally adequate foods are limited and/or uncertain.
Over the years, the
Nigerian government has embarked on myriad of agricultural policy and programme
initiatives such as national
accelerated food production programme, green revolution, Nigerian Vision 20: 2020,
agricultural transformation agenda, agricultural promotion policy under which
the country implemented the Anchor’s Borrower Programme to promote agricultural
diversification of essential crops of high nutrient quality especially in rural
areas of the country. Examples of such crops are cassava, potatoes, rice,
soybean, maize, fruits and vegetables. Diverse crop cultivation can boost
productivity and improve the stability of agroecosystems, whereas a lack of
diversification can have a negative knock-on effect on global diet quality
(Jones, 2017). Some of the international programmes incorporating nutrition in
Nigeria includes Agribusiness investment (2018-2023), Agricultural extension
and advisory services activity (2020-2025), and Rural resilience (2019-2024)
(USAID, 2021). Agricultural diversification can help ensure nutrition security
by improving farmer adaptability and reducing vulnerability, which is crucial,
given the predicted climate changes and the heavy reliance of smallholder
farmers on rain-fed crops enabling agricultural households to avert the risk of
poor income from cultivation of few crops. Several studies have found a
positive relationship between agricultural diversification and household
nutrition. In Tunisia, Mali, Zambia, Malawi and Bangladesh, agricultural
diversification was found to have a positive effect on nutrition (Gaillard et al., 2022; Douyon et al., 2022; Nkonde et al., 2021; Jones et al., 2014; Kabir et al., 2022).
In Indonesia, study showed that agricultural diversification is associated with
decline in nutrition diversity (Mehraban and Ickowitz, 2021). However, in
Nigeria, there is paucity of literature on the effect of agricultural production
diversity on nutrition. Hence, this study builds from limited evidence on the connection
between agricultural production diversity and farm household nutrition using a
cross sectional data from national representative sample from five geopolitical
zones of Nigeria. The paper assessed the extent of farm production diversity of
the rural farm households and determine the effect of farm production diversity
on farm household’s dietary diversity in Nigeria. Examining these objectives in
Nigeria is paramount given the widespread nutrition deficiencies (malnutrition)
among rural households. It will also inform policies/strategies that would
promote farm diversification and nutritional enhancement.
1.2 Structure of the Paper
The paper is
organised into four sections. Following this introductory section is section
two which contained the methodology deployed to achieve the objectives of the
study from which the paper was culled. Section
three discussed the results of the study. The paper is rounded off in section
four with summary of major findings and policy implications.
2. METHODOLOGY
The study covered
five geopolitical zones in Nigeria. The five geo-political zones included
North-Central (Niger State), North-West (Sokoto state), South-East (Enugu
State), South-South (Delta State), and South-West (Oyo State). There was
insecurity problem in the sixth geopolitical zone of the country, (North-East),
hence it could not be covered. Importantly, the study made use
of primary data. The data were collected through structured interviews which
were administered in a survey conducted in 2020. The data collected included
household demographic data, household socioeconomic characteristics, agricultural
production and marketing, enterprise production and management, input use, food
consumption, and other farm and farmer specific characteristics. Data on
household characteristics included household size, farm size, off-farm working
hours per person; livestock ownership and cash crop production and access to
credit and extension. Data on
characteristics of the household head as the main decision maker included sex,
age, and level of formal education attained by the household head. Further,
data on the incidence of droughts, floods, crop and livestock yield failure
that was experienced by the agricultural households in the past few years were
collected.
Multistage sampling
procedure was adopted in the study in which a random selection of one state per
geopolitical zone was carried out. In this regard, five of the six geopolitical
zones of the country were covered. In each of the selected states, one local
government and a village community in each local government was randomly
selected. In each village community a minimum of fifty farm households that are
engaged in cultivation of crops and rearing of livestock were purposively
selected for the field survey.
2.3 Measurement of Production Diversity.
Production
diversity indicator was computed using Simpson’s diversity index. This was
calculated based on the crop group cultivated or livestock group reared by the
households. In this measurement, livestocks such as cattle and small ruminants
owned by households were converted to tropical livestock units(TLUs) at the
standard conversion rates of 0.7 for cattle and 0.1 for small ruminants (Majekodunmi
et al ,2017). The Simpson Diversity Index (SDI) representing the production
diversity by the household was estimated as:
Where,
is SDI, which is production diversity index (PDI)
of the
household,
is the number of crop group cultivated or
livestock group (type) kept,
is the share of farmland area cultivated with
crop group
or Tropical Livestock Units (TLU) share for
Livestock group(type)
reared by the
household. The
SDI combines indicators of crop/ livestock richness and abundance. A high score
indicates not only that there are many species in the farm, but also that they
are distributed evenly across the farmed area. A zero score indicates that one
species occupies the whole farmed area, that is, complete specialization. The Simpson diversity index have been used
as farm production diversity indicators in similar studies such as Hirvonen and
Hoddinott, 2017; Olivier Ecker, 2018; and Bellon et al 2020.
2.4 Measurement of
Household Dietary Diversity Score.
Household Dietary Diversity Score (HDDS) was computed from the qualitative recall by head of household of all
foods consumed during the previous 24hour. From the recall, a categorisation of
the foods consumed into the various food groups according to the FAO was done.
A final recompiling of the food groups into 14 food groups and attributing
1point for each group consumed. For each
household, HDDS was the sum of these points. This ranged from zero for no food
intake in the previous 24hour to 14 for maximum diversity.
2.5. Estimating the
Effects of Production Diversity on Household Dietary Diversity Score
The
study explicitly analyzed the effect of production diversity on household
dietary diversity score by means of simple regression technique using the model
specified in equation (2).
Where,
is the household dietary diversity score of
the
household,
is production diversity
index of the
household,
is constant term,
are estimated coefficients,
is an error term.
3.1 Socio-Economic
Characteristics of Respondents
The socio-economic characteristics of the respondents as shown in table 3.1
explained the background of the farmers in the farming households. The results
showed the dominance of male, about 58 per cent, while the female was about 42
per cent. The age distribution of the farmers showed that majority of them,
56.40 per cent, fell within 31 and 50 years, while 28.95 per cent were above 50
years. About 15 per cent of the farmers fell within 30 years and below. The
average age of the farmer in the sample was 44years, suggesting that many of
the farmers were within productive age. They have the tendency to plant more
crops and keep more livestock as a means of adaptation to risks. Younger
farmers are more likely to use agricultural diversification to avoid production
risks (Huang et al 2014).
Further, the results in table 3.1 showed that 71.38 per cent of the
farmers have formal education while 28.62 have no formal education. Among those
with formal education, about 27 per cent have attained primary education, 36
per cent have attained secondary education while about 9 per cent have attained
tertiary education. Marital status showed
that about 80 per cent of them were married with average household size of 8,
while 4 per cent were single. Majority of the farmers, about 63 per cent, have
a larger household size between 6 and 15, suggesting a greater responsibility
in terms of feeding a large number of people with well diversified diets.
Moreover, the table showed that majority of the respondents have farming
as primary occupation while about 4 percent have non-farming as primary
occupation. Secondary occupation revealed about 31 per cent were engaged in
trading and business while 16 per cent were artisan. This suggests that the
farming households also diversified into non-agricultural activities to avoid
risks. About 81per cent of the farmers belong to association while 19 per cent
do not belong to any association.
Membership of association can provide opportunity for the farmers to
access information from extension services. In addition, membership of farmer organizations and cooperative can serve as platform
for knowledge exchange, and empowerment of farmers. Farming experience revealed that an average farmer has about 22 years of
experience in agricultural activities.
Table 3.1: Socioeconomic
Characteristics of Respondents.
Gender |
Percentage |
Male |
57.62 |
Female |
42.38 |
Total |
100.00 |
Age of respondents |
Percentage |
≤30 |
14.66 |
31-40 |
28.20 |
41-50 |
28.20 |
51-60 |
18.80 |
>60 |
10.15 |
Total Mean age = 44.26
years |
100.00 |
Years of formal
education |
Percentage |
None |
28.62 |
Primary |
27.14 |
Secondary |
35.69 |
Tertiary |
8.55 |
Total |
100.00 |
Mean=6.84 years Std dev= 6.21 |
|
Marital status |
Percentage |
Single |
4.09 |
Monogamous |
56.13 |
Polygamous |
23.79 |
Separated/Divorced |
5.58 |
Widow/widower |
10.41 |
Total |
100.00 |
Household size |
Percentage |
≤5 |
28.62 |
6-10 |
49.07 |
11-15 |
14.13 |
16-20 |
5.20 |
≥20 |
2.97 |
Total Mean= 8.26 Std dev.=7.66 |
100.00 |
Primary occupation |
Percentage |
Farming |
95.90 |
Non-Farming |
4.10 |
Total |
100 |
Secondary
occupation |
Percentage |
None |
37.50 |
Farming |
5.86 |
Civil service |
1.95 |
Artisan |
16.02 |
Trading/business |
30.86 |
Other |
7.81 |
Total |
100.00 |
Association
membership |
Percentage |
Yes |
81.04 |
No |
18.96 |
Total |
100.00 |
Source: Field Survey, 2020.
The result on access to agricultural loans by the agricultural
households is summarized in table 3.2. As shown in the table, credit access by
the sampled households was very low. Only 23 per cent of the households have
received loans in the past two seasons. Average amount of loan received by
those that have access was N227,850. The most common source of loan is
association and cooperative. About 55 per cent of the households obtained loan
from the association or cooperative, about 22 percent got their loan from
friends and family, 20per cent obtained loan from bank while 3per cent of them
obtained loan from money-lender. The result implies that access
to credits from formalised institutions for financing agricultural activities
is very limited among the sampled agricultural households.
Table 3.2: Access to Loans since
the past Two Seasons
Accessed loans in past 2 seasons |
Percentage of Households |
Yes |
22.68 |
Mean value of
loans= N227, 850 |
|
Sources of Loans |
|
Bank |
20.00 |
Association/cooperative |
55.00 |
Friend/family |
21.67 |
Money lender |
3.33 |
Source: Field
Survey, 2020.
3.3: Extent of
Agricultural Diversification among the Farming Households.
The
results in table 3.3 explained the extent of agricultural production diversity
among the farming households. The extent of production diversity among the
households are classified into three (Chalmers Mulwa and Martine Visser,2019).
First, is the level that is regarded as high. This includes the range of diversification
indices that are greater than 0.7. The second category is referred to as medium
or moderate. This covered the indices that ranged between 0.4 and 0.7, while
the third category includes indices that are less than or equal to 0.4. This is
regarded as low diversification implying low level of agricultural production
diversity. The extent of production diversity for the
combination of crop and livestock enterprises showed high intensity of diversity
among the households with about 78 per cent of households characterized as high
level of agricultural production diversity. About 18 per cent of the households
are characterised as medium level of production diversity. Only 4percent of the
households are characterised as low level of production diversity.
The results indicate that majority of the
households are highly diversified into planting many crop types and rearing of
many livestock types, hence, mixed farming system of agricultural practice is
widely practiced among the sampled households. The results in the same table
reveal that majority of the households practicing crop diversification alone
were classified as medium with 54 per cent of the households that fell within
this group. About 38 per cent of the farmers under crop diversification were
highly and well diversified into planting many types of crops. About 8 per cent
of the households were characterised as low production diversity.
Regarding livestock diversification, about 37
percent of the households exhibited high level of diversification in livestock.
Further, about 28 per cent of the households moderately diversified into
production of livestocks while another 35 per cent of the sample households
exhibited low level of diversification in livestock production, suggesting that
those households produced few numbers of livestock types.
Table
3.3: Agricultural Production Diversity.
Level of Diversification |
Crop Diversification |
Livestock Diversification |
Combination of Crop and Livestock Diversification |
|
Percentage of Households |
Percentage of Households |
Percentage of Households |
High
(>0.7) |
37.55 |
37.17 |
78.44 |
Medium
(0.4-0.7) |
54.28 |
27.88 |
17.84 |
Low
(≤0.4) |
8.18 |
34.94 |
3.72 |
Field
Survey,2020.
3.4 Household Dietary Diversity
The result of the
dietary diversity score is summarised in table 3.4. The table showed that the highest proportion,
about 50 per cent, of the households consumed between six and eight varieties
of food groups while about 12 per cent consumed between nine and fourteen
varieties of food groups. Moreover, about 38 per cent of the farm households
consumed between one and five varieties of food groups.
Table 3.4: Household
Dietary Diversity Score
Household Dietary
Diversity Score (HDDS) |
Percentage of
Households in the HDDS |
1-5 |
38.28 |
6-8 |
49.81 |
9-14 |
11.90 |
Source: Field Survey,
2020.
3.5
Effects of Production Diversity on Dietary Diversity
As
households intensify crop diversification, more diversified food groups will be
produced and available for household consumption. Households with higher crop diversity have
the tendency to consume a well-diversified food within the households (Makate
et al 2016). The results in table 3.5, revealed a positive effect of crop production
diversity on household dietary diversity score, suggesting that higher crop
diversification increases the diversities of food consumption in the
households. The results imply that crop diversification creates the opportunity
for the households to improve their dietary diversity. This is possible because
crop production diversity will improve yields, stability and crop insurance, if
one crop fails, the farmer can depend on the other crop. In this regard, crop
diversification could be a significant climate smart option because it creates
reliable avenue for improving household food security and diet options which
could help smallholder farmers in building resilience to the risks associated
with climate change and variability. The results conform with the earlier
findings of Makate et al 2016, and Mugendi Njeru,2013). Crop diversification
not only allows more efficient utilization of agro-ecological processes but
also provides diversity for human diet and improve income which improves the
purchasing power for the household for buying other foods.
Coefficient
of extension services in table 3.5 is positive and significant at 1 per cent
indicating that an increase in extension services will result into an increase
in the household dietary diversity. The extension services will ensure that
knowledge is accessible to farmers on a range of agricultural products,
technologies and practices that will support diversification and increased diversified food supply to the households for
better nutrition and diversified diets. The result is in conformity with the
findings of Christine Heumesser and Holger Kray (2019) who observed that
positive outcomes in terms of food consumption and dietary diversities can be
achieved through farmer training such as farmer field school that focuses on
food security messaging through an effective extension delivery system.
Furthermore, among
the households with crop diversification, the household size has a positive and
significant effect on household dietary diversity. Among the agricultural households that are
engaged in livestock production only, livestock diversification positively
influenced the household dietary diversity and the coefficient (0.66) of the
variable is statistically significant at 5 per cent level suggesting that one
per cent increase in livestock diversification will result into 0.66 per cent
increase in household dietary diversity. Other variables that exert significant effects
on the dietary diversity of farm households included sex of household head,
household size, credit access, extension services, asset ownership and extreme
rainfall. Sex of household head, household size, extension services and ownership
of assets all positively influenced household dietary diversity whereas credit
access negatively influenced dietary diversity of the households.
Table
3.5: Effects of Agricultural Production Diversity on Household Dietary
Diversity Score.
|
Crop Diversification Equation [1] |
Livestock Diversification Equation [2] |
Combined Equation [3] |
Sex of HH |
0.944*** (0.229) |
0.853*** (0.233) |
0.961*** (0.232) |
Age of HH |
-0.010 (0.012) |
-0.014 (0.012) |
-0.013 (0.012) |
Marital Status |
0.214 (0.306) |
0.238 (0.301) |
0.150 (0.310) |
Farming experience |
-0.009 (0.012) |
-0.0004 (0.012) |
-0.008 (0.012) |
Household size |
0.078*** (0.022) |
0.071*** (0.024) |
0.091*** (0.022) |
Credit access |
-0.373 (0.251) |
-0.479* (0.250) |
-0.472* (0.250) |
Extension Services |
0.866*** (0.231) |
0.951*** (0.239) |
0.828*** (0.233) |
Asset Ownership |
0.076*** (0.028) |
0.095*** (0.030) |
0.074** (0.029) |
Farm size |
0.0001 (0.0001) |
0.0001 (0.0001) |
4.2E-05 (6.5E-05) |
Crop diversification Index |
1.828*** (0.612) |
|
|
Livestock Diversification Index Agric. Diversification |
|
0.663** (0.3280) |
0.430* (0.231) |
Crop and Livestock failure |
0.254 (0.259) |
0.154 (0.265) |
0.268 (0.273) |
Extreme rainfall High Temperature |
-0.466 (0.325) -0.111 (0.228) |
0.622* (0.322) 0.058 (0.239) |
-0.588* (0.324) -0.094 (0.230) |
Constant |
3.605*** (0.849) |
4.507*** (0.755) |
4.454*** (0.775) |
R-Squared |
0.3503 |
0.3373 |
0.3356 |
Prob>F No of obs |
0.000 250 |
0.000 250 |
0.0000 250 |
***,**,*
= significant at 1%, 5% and 10% respectively
*Standard
errors in parenthesis
Source:
Author’s Computation.
4. SUMMARY OF MAJOR FINDINGS AND POLICY IMPLICATIONS.
Agricultural
production diversity is very crucial to meeting global challenge of food
insecurity and healthy nutrition. Achieving the sustainable goal of ending
hunger, and increasing access to healthy diets is a priority focus of the 2022-2025
Mid-Term Plans of the Food and Agriculture Organization. Although sub Saharan
Africa is well noted for vast food production, malnutrition is still a major
challenge due to poor diversity coupled with climate change and high
insecurity. In Nigeria, an estimated number of 2 million children suffer from
severe acute malnutrition which seems to be higher in rural areas. Irregular
rainfall affects diversity of crop grown which in turns affects the availability
and accessibility of nutritious food. This paper assessed the extent of farm
production diversity of the rural farm households and determines the effect of
farm production diversity on farm household’s dietary diversity in Nigeria
using a cross sectional data from national representative sample of five
geopolitical zones of Nigeria. Simpson Diversity Index, Household Dietary
Diversity Score (HDDS) and multiple regression were used for the analysis.
Result shows that about
78% of households were classified into high level of agricultural production
diversity and they were practising mixed farming. Among crop farmers, about 38%
of them were classified into high level of production diversity. Among the
livestock farmers, households exhibited high level of diversification.
Household dietary diversity score revealed that about 50% of the farming
households consumed between six and eight varieties of food groups. Result
showed a positive effect of crop and livestock diversity on household dietary
diversity score. Household size, sex of household head, extension service and
asset ownership all exert positive and significant effect on dietary diversity
of households practicing crop, livestock and integrated farm diversification.
Credit access exerts negative and significant effect on dietary diversity among
farmers practicing livestock and integrated crop and livestock production. Effect
of extreme rainfall on dietary diversity is negative and significant for
households practicing livestock production or integrated crop and livestock
diversification.
This result showed
three major policy implications for nutrition security in Nigeria and beyond. Crop
and livestock diversification positively and significantly influenced household
dietary diversity. This study therefore, recommends policy strategies that
would incorporate the integration of plant and animal production as this would not
only improve nutrition diversity but would also encourage income diversity.
This result is also impressive in that it encourages climate action (organic
farming/soil nutrient replenishment). Access to extension services
significantly contributed to dietary diversity. This shows the critical role of
access to extension service (information dissemination) in agricultural
production. The study recommends the provision of agricultural extension
service to boost crop and livestock production and improve nutrition among
rural households. Ownership of assets (wealth accumulation) influenced
household dietary diversity. Therefore, the inclusion of asset-based programmes
among rural households would advance dietary diversity.
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Cite this Article: Oni, TO (2022).
Effects of Production Diversity on Nutrition of Farming Households in Nigeria.
Greener Journal of Agricultural
Sciences, 12(3): 195-204. |