Table 5 Probit analysis of the determinants of adoption of biofortified cassava varieties.

From: Traits preferences heterogeneity and biofortified cassava varietal adoption among farming households in Southwest, Nigeria

Variable

Oyo state

Ogun state

Southwestern Nigeria

Coefficient

Standard

error

Marginal

effect

p-value

Coefficient

Standard

error

Marginal

effect

p-value

Coefficient

Standard

error

Marginal

effect

p-value

Age

-3.5230***

0.722

0.111

0.000

0.3591***

0.113

0.334

0.002

-0.0348**

0.0167

0.031

0.043

Education

0.2650**

0.114

0.279

0.022

0.172

0.919

0.019

0.852

2.4480**

0.9882

0.110

0.036

Experience

0.7105***

0.139

0.579

0.000

0.0357

0.167

0.025

0.834

-0.9858

-0.6294

0.163

0.117

Household size

0.0150

0.167

0.008

0.927

0.3612

0.200

0.199

0.074

-0.1764

0.2009

0.001

0.380

Farm size

0.0282

0.162

0.014

0.805

1.0053***

0.220

0.371

0.000

3.7179***

1.2291

0.222

0.001

Off farm income

0.1322

0.180

0.066

0.466

0.0822

0.215

0.026

0.705

0.0003***

0.0001

0.101

0.000

Credit

0.3061**

0.140

0.211

0.032

0.0511

0.103

0.048

0.619

-8.9947

10.9909

0.094

0.677

Extension contacts

0.4471***

0.134

0.374

0.001

0.5531***

0.148

0.346

0.000

0.5943**

0.3014

0.323

0.031

Planting material

0.5854***

0.135

0.502

0.000

0.0281

0.063

0.034

0.663

0.3923

0.4626

0.009

0.350

Yield trait

1.3060***

0.312

0.016

0.000

0.3244**

0.136

0.197

0.020

2.0110**

0.9111

0.101

0.031

Probit analysis of the determinants of adoption of biofortified cassava variety

 Stem height

0.1011

0.095

0.096

0.288

0.3333**

0.147

0.209

0.026

0.0113

0.0211

0.002

0.322

 Pest resistant trait

0.0133

0.035

0.025

0.697

0.4392***

0.148

0.296

0.004

0.0044

0.223

0.043

0.510

 Dry matter content

0.2740***

0.097

0.204

0.006

0.0722

0.172

0.035

0.677

0.1467***

0.043

0.111

0.001

 Starch content

0.0181

0.1540

0.014

0.904

0.0091

0.089

0.101

0.917

0.0037***

0.001

0.021

0.002

 Market demand

0.4831***

0.083

0.739

0.000

2.0100***

0.440

0.216

0.000

0.0566**

0.0301

0.006

0.041

 Product price

0.2260***

0.084

0.214

0.008

0.6481**

0.269

0.112

0.015

0.0021***

0.0006

0.410

0.000

 Product colour

0.1081**

0.046

0.175

0.021

0.0281***

0.006

0.034

0.000

0.9099

1.0667

0.001

1.222

 Constant

15.2112**

3.0592

-

0.001

33.1879**

4.2213

-

0.000

51.9912**

23.0592

-

0.024

 Log likelihood

-211.812

   

-111.229

   

-189.678

   

 Chi- square

193.15

   

200.111

   

243.49

   

 Probability level

0.0000

   

0.0000

   

0.0000

   
  1. Note: ** = Significant at 5%, *** Significant at 1% Dependent Variable = Adoption of biofortified cassava.
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