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Key challenges in smallholder
 cereal-legume-livestock systems in
    the Guinea savanna of Ghana

        S.S. Buah (CSIR-SARI) and N. Karbo (CSIR-ARI)

Africa RISING West Africa Review and Planning Meeting Tamale, Ghana, 23-25
                               October 2012
Introduction
Rapid transformation of agricultural practices in
northern Ghana are due to:
 Rapid human population growth
 Increased pressure on land
 Increase in agricultural intensification
 Climate change
 Increase incidence and severity of diseases, pests
  and drought.
Introduction
 Technologies that can enhance productivity need to be
  developed.

 At the same time, the natural resource base must be
  preserved.

 Thus, an integrated crop-livestock farming system
  represents a key solution for enhancing livestock production
  and safeguarding the environment through prudent and
  efficient resource use.
Major challenges to agricultural production in
the Guinea savanna of Ghana
  Poor soil fertility and water availability
  Land use planning conflicts for integrated sytems
  Pests and diseases of crops and livestock
  Parasitic weeds such as Striga
Major challenges to agricultural production in the
Guinea savanna of Ghana

  Credit and inputs
  Drought
  Competition between crops and livestock for
   resources
  Weak institutional mechanisms
Soil fertility and Water
  Traditional farming systems are breaking down
   under human and livestock population pressure.
  Current fallow periods are not long enough to
   replace exported nutrients
  Soil organic matter is very low
  Nitrogen (N) is the most limiting nutrient.
  Phosphorus (P) is the second most limiting
   nutrient
Poor soil and many mouths to feed
•Although mineral fertilizers can be used to replace nutrient losses, socio-economic constraints such as high prices and lack of credit limit their use.
•Smallholder farmers commonly apply too little fertilizer, either because they cannot afford more or because fertilizers are not readily available.




    Soil fertility and Water
         Smallholder farmers apply too little
          fertilizer, either because they cannot afford
          more or because fertilizers are not readily
          available.
         Both mineral fertilizers and organic inputs are
          required to improve soil fertility
•Although mineral fertilizers can be used to replace nutrient losses, socio-economic constraints such as high prices and lack of credit limit their use.
•Smallholder farmers commonly apply too little fertilizer, either because they cannot afford more or because fertilizers are not readily available.




    Soil fertility and Water

         Integrated crop-livestock systems could improve
          soil fertility in short fallow or continuous
          cropping systems.
         Increased use of organic and inorganic
          fertilizers together with diversification of
          cropping to include legumes are important tools
          in restoring or sustaining soil fertility in northern
          Ghana
•Although mineral fertilizers can be used to replace nutrient losses, socio-economic constraints such as high prices and lack of credit limit their use.
•Smallholder farmers commonly apply too little fertilizer, either because they cannot afford more or because fertilizers are not readily available.




    Soil fertility and Water
         Problems with availability of water for all year
          round use for crop and livestock production
         Bush fires
         Socio-cultural problems
unfertilized maize crop   Fertilized maize
Land use planning conflicts
  Crop production vs. grazing land for livestock
  Urbanization
  Bush fires
  Policy void
Pests and diseases
  Insect pests are a major constraint to legume
   production, particularly cowpea.

  Commercial production of cowpea in northern Ghana
   is probably not feasible without the using insecticide.

  Major insects of cowpea are flower thrips
   [Megalurothrips sjostedti (Trybom)], the legume pod
   borer (Maruca vitrata) and a range of pod-feeding bugs
Pests and diseases
  Groundnut yields are traditionally low, due to several
   constraints including pests and diseases.

  Aphids (Aphis craccivora) are a serious pest as well
   as a vector of virus diseases, such as the rosette

  Major biotic constraint to groundnut production
   include groundnut rosette disease (GRD), early leaf
   spot (ELS), late leaf spot (LLS) and rust
Pests and diseases

  Livestock diseases retard the introduction of
   more productive breeding stock and new
   technologies and creating an adverse impact on
   crop-livestock integration

  The most important diseases are vector-
   transmitted parasitic and viral diseases.
Pests and diseases

  Integrated pest management (IPM) involves
 - integrating biological control,
 - cultural practices such as modified planting date,
 - disease- and pest-tolerant cultivars,
 - and pesticides where necessary
  This can increase the effectiveness of pest control
   and reduce overuse of pesticides.
Parasitic weeds
  Striga hermonthica on cereals
  Striga gesnerioides on legumes

  Both parasites are difficult to control because
   they produce large numbers of seeds and up
   to 75% of the crop damage is done before
   they emerge from the ground.
Weed Control

s




                  • Striga hermonthica




    Striga gesnerioides                  Alectra vogelli
Parasitic weeds
 The increasing incidence of striga has been
  attributed to
- poor soil fertility and structure
- intensification of land use through continuous
  cultivation and
- an expansion of cereal production.

 Striga damage can be reduced by growing tolerant
  or resistant varieties
Parasitic weeds
 Striga damage can be reduced by planting trap
  crops such as groundnut, soybean, cowpea and
  sesame that stimulate striga seed to germinate
  without providing a viable host

 Coping strategies of farmers include hand-
  roguing, application of inorganic
  fertilizer, manures, compost and crop rotations.
Credit and inputs
  Inadequate credit
  Weak seed systems
  Lack of implements for mechanization
  High cost and accessibility of fertilizers
  Feeds and markets
  Appropriate technologies
Drought
 Trend of decreasing rainfall and increasing
  temperatures

 Probability of drought is highest at the start and
  end of the growing season,

 Timing of deficits is unpredictable
Drought
 Several strategies have been developed for the
  conservation of soil and water to maintain productivity
  including
- rainwater harvesting,
- live barriers,
- supplementary irrigation,
- minimum tillage,
- mulching,
- bunded basins, and
- tree planting
Competition between crops and livestock
for resources
  In smallholder farming systems there are conflicts
   over the use of the precious crop residues for:
 • soil cover and organic matter replenishment
 • livestock feed
 • housing,
 • craft materials and
 • energy source.
Competition between crops and livestock for resources

  Crop residues provide highly valued fodder for
   livestock in northern Ghana, particularly in the drier
   Upper East region.

  Feeding livestock, especially during the dry season is
   a major constraint to livestock development in
   northern Ghana
Stover removed and stored for fencing, fuel or roofing    Stover removed and used for weaving baskets




     Stover removed and stored for feeding livestock     Stover removed and used for feeding livestock
Livestock graze freely on crop residue
Integrating crop and livestock production offers ways to increase production while
protecting the environment.
Cultural and economic value of livestock in in the
Guinea savanna zone
  As an investment and insurance against risk,
  Used for traction
  Provide meat, milk, hides, and manure,
  Used as means of transport.
  can be converted into prompt cash in times of
   need.
  Used for ceremonies, paying bride price and
   source of savings
Advantages of the integrated system
 livestock and crops are produced within a
  coordinated framework.
 The waste products of one component serve as a
  resource for the other.
 Manure is used to enhance crop production;
 crop residues and by-products feed the
  animals, supplementing often inadequate feed
  supplies, thus contributing to improved animal
  nutrition and productivity.
Advantages of the integrated system

  Maintenance of the soil productive capacity;
  Product diversification and higher yields and
   quality at less cost;
  Reduction of crop pests (less pesticide use and
   better soil erosion control); and
  Reduction of rural urban migration and the
   creation of new job opportunities in rural areas.
Cereal-legume rotation   Cereal-legume intercrop
Weak institutional mechanisms
 Weak linkages among research –extension and farmers
 Poor communications among farmers, extension
  agents, and researchers leading to low adoption of
  promising technologies generated by research.

 Extension workers do not possess adequate knowledge in
  all crop and livestock production issues.

 Weak research and extension messages towards systems
Weak institutional mechanisms

 Attitudes
 Mindsets
 Policy issues
 Institutional and technical concepts
 Other projects are competing for the AEA’s time
Conclusions
 Use of productive but more sustainable management
  practices can help resolve these production problems.

 With the majority of the population in Ghana dependant on
  agriculture for their livelihoods, technological options that
  increase agricultural productivity and help to buffer farmers
  against the negative impacts of climate related and other
  constraints should be promoted.
Africa Research in Sustainable Intensification for the Next Generation
                    africa-rising.net

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Key challenges in smallholder cereal-legume-livestock systems in the Guinea savanna of Ghana

  • 1. Key challenges in smallholder cereal-legume-livestock systems in the Guinea savanna of Ghana S.S. Buah (CSIR-SARI) and N. Karbo (CSIR-ARI) Africa RISING West Africa Review and Planning Meeting Tamale, Ghana, 23-25 October 2012
  • 2. Introduction Rapid transformation of agricultural practices in northern Ghana are due to:  Rapid human population growth  Increased pressure on land  Increase in agricultural intensification  Climate change  Increase incidence and severity of diseases, pests and drought.
  • 3. Introduction  Technologies that can enhance productivity need to be developed.  At the same time, the natural resource base must be preserved.  Thus, an integrated crop-livestock farming system represents a key solution for enhancing livestock production and safeguarding the environment through prudent and efficient resource use.
  • 4. Major challenges to agricultural production in the Guinea savanna of Ghana  Poor soil fertility and water availability  Land use planning conflicts for integrated sytems  Pests and diseases of crops and livestock  Parasitic weeds such as Striga
  • 5. Major challenges to agricultural production in the Guinea savanna of Ghana  Credit and inputs  Drought  Competition between crops and livestock for resources  Weak institutional mechanisms
  • 6. Soil fertility and Water  Traditional farming systems are breaking down under human and livestock population pressure.  Current fallow periods are not long enough to replace exported nutrients  Soil organic matter is very low  Nitrogen (N) is the most limiting nutrient.  Phosphorus (P) is the second most limiting nutrient
  • 7. Poor soil and many mouths to feed
  • 8. •Although mineral fertilizers can be used to replace nutrient losses, socio-economic constraints such as high prices and lack of credit limit their use. •Smallholder farmers commonly apply too little fertilizer, either because they cannot afford more or because fertilizers are not readily available. Soil fertility and Water  Smallholder farmers apply too little fertilizer, either because they cannot afford more or because fertilizers are not readily available.  Both mineral fertilizers and organic inputs are required to improve soil fertility
  • 9. •Although mineral fertilizers can be used to replace nutrient losses, socio-economic constraints such as high prices and lack of credit limit their use. •Smallholder farmers commonly apply too little fertilizer, either because they cannot afford more or because fertilizers are not readily available. Soil fertility and Water  Integrated crop-livestock systems could improve soil fertility in short fallow or continuous cropping systems.  Increased use of organic and inorganic fertilizers together with diversification of cropping to include legumes are important tools in restoring or sustaining soil fertility in northern Ghana
  • 10. •Although mineral fertilizers can be used to replace nutrient losses, socio-economic constraints such as high prices and lack of credit limit their use. •Smallholder farmers commonly apply too little fertilizer, either because they cannot afford more or because fertilizers are not readily available. Soil fertility and Water  Problems with availability of water for all year round use for crop and livestock production  Bush fires  Socio-cultural problems
  • 11. unfertilized maize crop Fertilized maize
  • 12. Land use planning conflicts  Crop production vs. grazing land for livestock  Urbanization  Bush fires  Policy void
  • 13. Pests and diseases  Insect pests are a major constraint to legume production, particularly cowpea.  Commercial production of cowpea in northern Ghana is probably not feasible without the using insecticide.  Major insects of cowpea are flower thrips [Megalurothrips sjostedti (Trybom)], the legume pod borer (Maruca vitrata) and a range of pod-feeding bugs
  • 14. Pests and diseases  Groundnut yields are traditionally low, due to several constraints including pests and diseases.  Aphids (Aphis craccivora) are a serious pest as well as a vector of virus diseases, such as the rosette  Major biotic constraint to groundnut production include groundnut rosette disease (GRD), early leaf spot (ELS), late leaf spot (LLS) and rust
  • 15. Pests and diseases  Livestock diseases retard the introduction of more productive breeding stock and new technologies and creating an adverse impact on crop-livestock integration  The most important diseases are vector- transmitted parasitic and viral diseases.
  • 16. Pests and diseases  Integrated pest management (IPM) involves - integrating biological control, - cultural practices such as modified planting date, - disease- and pest-tolerant cultivars, - and pesticides where necessary  This can increase the effectiveness of pest control and reduce overuse of pesticides.
  • 17. Parasitic weeds  Striga hermonthica on cereals  Striga gesnerioides on legumes  Both parasites are difficult to control because they produce large numbers of seeds and up to 75% of the crop damage is done before they emerge from the ground.
  • 18. Weed Control s • Striga hermonthica Striga gesnerioides Alectra vogelli
  • 19. Parasitic weeds  The increasing incidence of striga has been attributed to - poor soil fertility and structure - intensification of land use through continuous cultivation and - an expansion of cereal production.  Striga damage can be reduced by growing tolerant or resistant varieties
  • 20. Parasitic weeds  Striga damage can be reduced by planting trap crops such as groundnut, soybean, cowpea and sesame that stimulate striga seed to germinate without providing a viable host  Coping strategies of farmers include hand- roguing, application of inorganic fertilizer, manures, compost and crop rotations.
  • 21. Credit and inputs  Inadequate credit  Weak seed systems  Lack of implements for mechanization  High cost and accessibility of fertilizers  Feeds and markets  Appropriate technologies
  • 22. Drought  Trend of decreasing rainfall and increasing temperatures  Probability of drought is highest at the start and end of the growing season,  Timing of deficits is unpredictable
  • 23. Drought  Several strategies have been developed for the conservation of soil and water to maintain productivity including - rainwater harvesting, - live barriers, - supplementary irrigation, - minimum tillage, - mulching, - bunded basins, and - tree planting
  • 24. Competition between crops and livestock for resources  In smallholder farming systems there are conflicts over the use of the precious crop residues for: • soil cover and organic matter replenishment • livestock feed • housing, • craft materials and • energy source.
  • 25. Competition between crops and livestock for resources  Crop residues provide highly valued fodder for livestock in northern Ghana, particularly in the drier Upper East region.  Feeding livestock, especially during the dry season is a major constraint to livestock development in northern Ghana
  • 26. Stover removed and stored for fencing, fuel or roofing Stover removed and used for weaving baskets Stover removed and stored for feeding livestock Stover removed and used for feeding livestock
  • 27. Livestock graze freely on crop residue
  • 28. Integrating crop and livestock production offers ways to increase production while protecting the environment.
  • 29. Cultural and economic value of livestock in in the Guinea savanna zone  As an investment and insurance against risk,  Used for traction  Provide meat, milk, hides, and manure,  Used as means of transport.  can be converted into prompt cash in times of need.  Used for ceremonies, paying bride price and source of savings
  • 30. Advantages of the integrated system  livestock and crops are produced within a coordinated framework.  The waste products of one component serve as a resource for the other.  Manure is used to enhance crop production;  crop residues and by-products feed the animals, supplementing often inadequate feed supplies, thus contributing to improved animal nutrition and productivity.
  • 31. Advantages of the integrated system  Maintenance of the soil productive capacity;  Product diversification and higher yields and quality at less cost;  Reduction of crop pests (less pesticide use and better soil erosion control); and  Reduction of rural urban migration and the creation of new job opportunities in rural areas.
  • 32. Cereal-legume rotation Cereal-legume intercrop
  • 33. Weak institutional mechanisms  Weak linkages among research –extension and farmers  Poor communications among farmers, extension agents, and researchers leading to low adoption of promising technologies generated by research.   Extension workers do not possess adequate knowledge in all crop and livestock production issues.  Weak research and extension messages towards systems
  • 34. Weak institutional mechanisms  Attitudes  Mindsets  Policy issues  Institutional and technical concepts  Other projects are competing for the AEA’s time
  • 35. Conclusions  Use of productive but more sustainable management practices can help resolve these production problems.  With the majority of the population in Ghana dependant on agriculture for their livelihoods, technological options that increase agricultural productivity and help to buffer farmers against the negative impacts of climate related and other constraints should be promoted.
  • 36. Africa Research in Sustainable Intensification for the Next Generation africa-rising.net