Assuming a rotation of Crucifiers (broccoli, cauliflower, Chinese cabbage or bok choy), lettuce and leeks.
There are opportunities for growing vegetables in the river valleys where some growing is already established as well as in newer “greenfields” sites (as shown on the map) where they have not been grown before. The provision of a secure water supply is essential in choosing a location as vegetables require from 4 to 6 ML per ha. The higher volumes are required in the drier northern and western areas of the catchment.| This map of biophysical suitability for Vegetables - Cool Climate has been developed by the Centre for Land Protection Research, DPI. It applies to the dryland parts of the Goulburn Broken region. The map has been developed using the Most Limiting Factor method. The factors and critical values used for determining the biophysical suitability are shown in the table below. Please refer to Important Notes about these maps. |
FACTOR | CRITICAL VALUE | ||
High probability of being suitable | Moderate probability of being suitable | Low probability of being suitable | |
| CLIMATE | |||
| Average monthly maximum temperature oC (Dec. to Mar. inclusive) | > 25 | 20 - 25 | < 20 |
| Average monthly maximum temperature oC (Nov.) | > 21 | 18 - 21 | < 18 |
| Frost free days (Oct. to Mar. inclusive) | > 120 | < 120 | |
| LANDSCAPE | |||
| Slope (%) | < 6 | 6 - 10 | > 10 |
| SOIL | |||
| Surface pH | => 5.5 | 5.3 - 5.5 | < 5.3 |
| Sub-surface pH | > 5.4 | 5.0 - 5.4 | < 5.0 |
| Surface texture | Loam, Sandy Loam, Silt Loam, Sandy Clay Loam, Loamy Sand, Fine Sandy Loam, Loam Fine Sandy | Clay Loam Sandy, Silty Clay Loam, Light Clay, Sand, Clayey Sand, Clay Loam, Medium Clay, Heavy Clay | |
| Sub-surface texture | Loam, Sandy Loam, Silt Loam, Sandy Clay Loam, Loamy Sand, Fine Sandy Clay Loam, Fine Sandy Loam, Loam Fine Sandy | Clay Loam Sandy, Silty Clay Loam, Loamy Clay, Sand, Clayey Sand, Clay Loam, Heavy Clay, Light Clay, Medium Clay, Silty Clay | |
| Surface soil sodicity | No (ESP < 6%) | Slight (ESP 6 -15%) | Yes (ESP >15%) |
| Sub-surface soil sodicity | No (ESP < 6%), Slight (ESP 6 -15%) | Yes (ESP >15%) | |
| Useable soil depth (cm) | > 50 | 45 - 50 | < 45 |
| Surface/Sub-surface drainage | Moderately well drained (4), Well drained (5), Rapidly drained (6) | Imperfectly drained (3) | Poorly drained (2), Very poorly drained (1) |
| Coarse fragments (%) | < 15 | 15 - 30 | > 30 |