The laterals are buried 200mm deep spaced 0.762m apart (that’s 30 inches – a standard process vegetable and maize crop row spacing).
1L/h compensating drippers are spaced at 400mm intervals. This gives an application rate of 3mm per hour and a system flow rate of 4.2 L/s.
We have been able to deep rip between the laterals using RTK-GPS and True Earth Organics’ rippers mounted 762mm apart. This has been done twice to date.
In August 2014 the system was improved by adding flushing manifolds.
We are grateful for the support of Anthony Waites at ThinkWater Hawke’s Bay for this aspect of the MicroFarm irrigation. Thanks, too, Netafim for supplying componentry.