Table 2 Estimation results of the asymmetric translog production function.

From: Comparison of agrochemicals allocation efficiency between greenhouse and open-field vegetables in China

Inputs

Tomato

Cucumber

land

− 3.436*** (0.95)

− 0.629 (0.65)

seed

1.669** (0.84)

− 0.501 (0.40)

fertilizer

− 0.277 (0.63)

− 0.497 (0.62)

Organic fertilizer

1.303** (0.66)

0.694 (0.58)

Land*land

0.279 (0.19)

0.096 (0.09)

Land*seed

− 0.011 (0.13)

0.004 (0.11)

Land*fertilizer

0.466*** (0.16)

0.137 (0.14)

Land*organic fertilizer

0.078 (0.10)

− 0.087 (0.10)

Seed*seed

− 0.091 (0.09)

0.142* (0.07)

Seed*fertilizer

− 0.069 (0.09)

0.077 (0.07)

Seed* organic fertilizer

− 0.216* (0.12)

− 0.076 (0.08)

Fertilizer*fertilizer

− 0.064 (0.20)

− 0.032 (0.09)

Fertilizer* organic fertilizer

− 0.266** (0.11)

− 0.065 (0.09)

ORGANIC fertilizer * organic fertilizer

0.063 (0.07)

0.096 (0.08)

Pesticides

0.005 (0.01)

− 0.016* (0.01)

Capital

0.061*** (0.01)

0.013 (0.01)

Labor

0.032** (0.01)

0.036** (0.02)

Open-field relative to greenhouse

− 0.165* (0.09)

0.247*** (0.07)

Time trends

0.042*** (0.01)

0.036*** (0.01)

Constants

2.285*** (0.42)

2.480*** (0.35)

Number of observations

577

583

  1. Growth inputs include land, seed, chemical fertilizer and organic fertilizer. Facilitating inputs include pesticide, capital and labor. Standard errors are shown in parentheses.
  2. *,**,*** indicate statistical significance at the 10%, 5% and 1%, respectively.