The Adoption of Agricultural Technology - Food Security Group

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RevisedThe association is tested controlling for the third factor:Region X (CO> Region Y (C 1)A (no relationship) BA (no relationship) BRegion XRegion YAdopt Do not adopt Adopt Do not adoptvariety variety Total variety variety TotalOwner 35 (30%) 81 (70%) 116 (100%) 124 (83%) 25 (17%) 149 (100%)Share 10 (21%) 37 (79%) 47 (100%) 4 (67%) 2 (33%) 6 (100%)cropper X 2 prob. =n.s. X 2 prob. = n.s.4. Finding a variable that suppresses a relationSometimes we expect to see an association between two variables, butwe find none exists. A third variable may suppress the relation by beingpositively correlated with the dependent variable and negativelycorrelated with the independent variable. Preliminary analysis of anadoption survey showed no relationship between farm size (A) andfertilizer use (B), although researchers expected to see such arelationship. A third variable, slope of field (C), suppressed therelationship. More fertilizer was used on hillside fields than on Oatfields, and most large farms were on Oat land. Hillside fields werepositively correlated with the dependant variable (fertilizer adoption)and negatively correlated with the independent variable (farm size).Proposed relation: A (no relation) 8Revised relation:(-)Ac ~8 A==-- 8ProposedFarm size (A) (no relation) Fertilizer use (8)Small farms (n=53)Large farms (n=38)Average fertilizer use (bags/ha) 4.6 4.9t-test prob = n.s.-74
RevisedThe association is tested controlling for the third factor:Farms on flat land (Co) Farms on hillsides (C 1)A B A BFarms on flat landFarms on hillsidesSmall farms Large farms Small farms Large farms(n=9) (n=33) (n=44) (n=5)Average fertilizeruse (bags/ha) 1.7 4.3Hest prob.
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I Chapter 1AdoptionStudiesWhy Study
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emphasis on participatory research
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of adoption study must be done with
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-7some idea of the degree to which
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80 2. tudl Used to Assess Different
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Another issue in measuring adoption
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Yt and we can estimate K (the maxim
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Measuring ImpactEarlier sections di
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-17The Role of Adoption Studies in
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Bo 3. Variable and Criteria __'_."C
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Farmers in Bumbogo, Rwanda grow bea
Page 31 and 32: -23The following graph shows the ac
Page 33 and 34: -25One valuable contribution to ass
Page 35 and 36: 80 1A study of mechanical wheat har
Page 37 and 38: Chapter 3UnderstandingAdoptionThe F
Page 39 and 40: small test of farmers' skills (for
Page 41 and 42: Wealth. Wealthier farmers may be th
Page 43 and 44: degree of adoption may depend on th
Page 45 and 46: conditions of the preceding or foll
Page 47 and 48: equired inputs, then the technology
Page 49 and 50: help in analyzing the degree to whi
Page 51 and 52: Checklist (cont'd.).....FactorBiolo
Page 53 and 54: Box 14. Gender Analysis and Adoptio
Page 55 and 56: Box 16. Labor Availability and Adop
Page 57 and 58: 80 1 te Trade-offsFarmers must ofte
Page 59 and 60: -51The adoption of technology is in
Page 61 and 62: -53Box 22. Source of Purchased Inpu
Page 63 and 64: Box 24. Knowledge of Recommendation
Page 65 and 66: services, or markets, it is importa
Page 67 and 68: - SamplingforcomparisonsTn many ins
Page 69 and 70: chosen for the survey will determin
Page 71 and 72: B. Measurements for input use may b
Page 73 and 74: 2. Where did you acquire the seed?1
Page 75 and 76: Cha ter 5MethodsforAnalyzingAdoptio
Page 77 and 78: One of the simplest and most useful
Page 79 and 80: For instance, a survey may show tha
Page 81: -73Revised[Oxen ownership (A) --.t~
Page 85 and 86: The following example is a simple l
Page 87 and 88: where b o is the constant, b}' b 2,
Page 89 and 90: variables. And a high significance
Page 91 and 92: 1Decision trees are a method of rep
Page 93 and 94: ReferencesAcharya, M., and L. Benne
Page 95 and 96: Jha, D., B. Hojjati, and 5. Vosti.
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The Adoption of Agricultural Technology - Food Security Group

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