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Table 7 Determinants of profitability of alternative vegetable production systems

From: Profitability and constraints to urban exotic vegetable production systems in the Kumasi metropolis of Ghana: a recipe for job creation

Variable Pooled All the three vegetables Lettuce and cabbage Lettuce and spring onion Lettuce only
Coefficient Std error Coefficient Std error Coefficient Std error Coefficient Std error Coefficient Std error
Constant 905.10 1490.07 1881.433 12,665.298 6804.584 5574.675 3840.413 1268.683 444.43 2367.01
Age of farmer − 1.861 40.33 − 46.925 313.861 − 38.057 20.764 − 41.939* 23.334 33.72 33.840
Education 16.41*** 12.45 25.51* 4.456 48.61** 4.589 54.78*** 18.34 47.74*** 52.12
Household size 42.06*** 149.86 58.809** 1492.143 299.664 153.162 − 65.998 90.403 86.46** 128.254
Experience 60.89** 60.14 10.632** 310.800 39.541* 436.254 43.897** 33.968 24.90 63.277
Price of labor price − 3.559** 4.38 − 4.074*** 42.706 − 44.713*** 296.487 − 3.657* 2.395 − 0.277** 2.42
Access to credit 29.37*** 881.77 24.263** 7809.133 51.059** 232.433 − 82.682 730.105 17.80** 706.63
Price of output 41.81** 110.2 88.46* 412.4 43.21 314.67 71.11 52.89 58.47*** 94.75
Price of fertilizer − 6.01 5.16 − 3.138 30.756 − 45.624*** 44.164 − 18.281* 3.275 − 4.33 4.07
Price manure 101.18 92.075 146.457 279.763 − 4755.077 2994.411 217.686 237.903 404.54 314.16
Price pesticide − 3.756 10.248 − 15.171 164.081 152.691 128.502 − 4.642 3.905 − 46.02 48.83
Price fungicide − 37.27 − 31.01 70.786 365.705 486.138 265.881 − 19.43 19.255 − 34.41 21.82
Farm size − 23.45** 15.95 − 32.45*** 41.45 4.12 45.12 − 65.45** 71.45 − 49.72 124.3
Farm tools 24.21 17.46 89.75 45.15 71.59 412.2 − 87.92 58.13 42.58 54.97
N 80   18   12   30   20  
R 2 0.854   0.657   0.614   0.814   0.748  
F-statistic 98.45   84.78   92.18   100.45   76.78  
Prob (F-statistic) 0.000   0.004   0.064   0.001   0.007  
  1. Source: Field Survey, 2017,
  2. ***Significant at 1%, **significant at 5%, *significant at 10%, N= sample size