| Variable | Obs | Mean | Std. Dev. | Organic fertilizer | P-free fertilizer | ||
| Adopters | Non-adopters | Adopters | Non-adopters | ||||
| Mean | Mean | Mean | Mean | ||||
| Organic fertilizer | 590 | 0.308 | 0.462 | 0.308 | 0.692 | 0.526 | 0.240 |
| P-free fertilizer | 581 | 0.234 | 0.424 | 0.399 | 0.159 | 0.234 | 0.766 |
| Environmental Knowledge and Attitudes |
| ||||||
| Knowledge of watershed | 601 | 0.637 | 0.481 | 0.772 | 0.575 | 0.754 | 0.598 |
| Importance of water quality | 610 | 0.813 | 0.390 | 0.857 | 0.792 | 0.868 | 0.796 |
| Concern about neighbors’ opinions | 605 | 0.430 | 0.495 | 0.333 | 0.478 | 0.425 | 0.436 |
| Trust env. group very much | 584 | 0.175 | 0.380 | 0.273 | 0.125 | 0.215 | 0.151 |
| Yard Management Behavior | |||||||
| Fertilizing habits | |||||||
| No fertilizer use | 601 | 0.121 | 0.327 | 0.303 | 0.037 | 0.142 | 0.113 |
| 1-2 times (base) | 601 | 0.567 | 0.496 | 0.534 | 0.599 | 0.530 | 0.588 |
| More than 3 times | 601 | 0.285 | 0.452 | 0.146 | 0.333 | 0.313 | 0.267 |
| Watering habits | |||||||
| As needed to keep lawn green | 603 | 0.264 | 0.441 | 0.211 | 0.283 | 0.319 | 0.251 |
| Infrequently (base) | 603 | 0.420 | 0.494 | 0.383 | 0.436 | 0.356 | 0.430 |
| Never/ Severe drought | 603 | 0.269 | 0.444 | 0.350 | 0.239 | 0.274 | 0.274 |
| Use lawn care service | |||||||
| No use (base) | 603 | 0.635 | 0.482 | 0.750 | 0.591 | 0.637 | 0.643 |
| Mowing only | 603 | 0.050 | 0.218 | 0.056 | 0.049 | 0.044 | 0.054 |
| Chemical use | 603 | 0.315 | 0.465 | 0.194 | 0.360 | 0.319 | 0.303 |
| Hours spent on gardening/lawn | |||||||
| More than 10 hours | 600 | 0.487 | 0.500 | 0.641 | 0.420 | 0.590 | 0.456 |
| Conducted soil test | 592 | 0.147 | 0.354 | 0.264 | 0.093 | 0.311 | 0.094 |
| Personal Characteristics | |||||||
| Male | 600 | 0.667 | 0.472 | 0.628 | 0.682 | 0.659 | 0.674 |
| Education | |||||||
| High school degree or GED | 603 | 0.103 | 0.304 | 0.088 | 0.112 | 0.088 | 0.107 |
| 2yr college degree | 603 | 0.189 | 0.392 | 0.243 | 0.161 | 0.228 | 0.171 |
| 4yr college degree (base) | 603 | 0.350 | 0.477 | 0.326 | 0.360 | 0.331 | 0.355 |
| Graduate degree | 603 | 0.358 | 0.480 | 0.343 | 0.367 | 0.353 | 0.367 |
| Household income | |||||||
| $0 - $25,000 | 550 | 0.047 | 0.212 | 0.054 | 0.044 | 0.048 | 0.045 |
| $25,000 - $49,999 | 550 | 0.171 | 0.377 | 0.226 | 0.145 | 0.184 | 0.170 |
| $50,000 - $74,999 (base) | 550 | 0.262 | 0.440 | 0.321 | 0.238 | 0.264 | 0.259 |