This article first appeared in Irrigatin New Zealand’s Quarterly magazine in 2012. Hew Dalrymple says mapping maize yields with his combine harvester highlighted problems with water in his paddocks: some parts had too much and some had too little. Hew and brother, Roger, now have 20 pivot irrigators at Waitatapia, their 2400ha Manawatu sand country … Continue reading Managing Water a Whole Farm Project