Table 1 Variables used in the models and their hypothesized effects on the use of CSP
Variables | Description of variable | Hypothesized effect |
|---|---|---|
useCSP | If the farmer plants/uses CSP (1 = yes, 0 = otherwise) | Dependent variable |
age | Respondent’s age measured in years | ± |
gender | Gender of the farmer (1 = male; 0 = otherwise) | ± |
occupation | Occupation of the farmer (1 = full time, 0 = otherwise) | |
education | number of years of formal schooling | |
hhdsize | Number of household members | – |
distagric | Distance to the nearest agricultural office in walking minutes | – |
distkisima | Distance from the residence of the farmer to Kisima Farm in kilometers | – |
credit | If the farmer had access to credit (1 = yes; 0 = otherwise) | ± |
land | Size of land (hectares) the farmer had before adopting CSP | ± |
asset | Value of physical assets in USD | + |
phone | If the farmer owns a mobile phone (1 = yes; 0 = otherwise) | ± |
memgrp | If the farmer is a member of a farmer organization (1 = yes; 0 = otherwise) | + |
ε | The stochastic term | |
Measures of the effect of use of CSP (outcome variables) | ||
fungicide | Value of purchased fungicide (USD/ha) | – |
insecticide | Value of purchased insecticide (USD/ha) | – |
yield | Potato yield (kg/ha) | + |
fertilizer | Value of purchased fertilizer (USD/ha) | ± |
foodsec | HFIAP score | – |