Tru-Test EC-09 - Entering the factory default formula; Other formulas; Seasonal variations of formulas; Dairy NZ formulas

9
While the plate meter is switched on, hold down the ‘Formula’ button. The display
shows ‘F_ _ d’ Press the ‘Reset’ button briefly. The display will then show (500)
and then (140). The default formula has now been loaded and saved to memory.
To better reflect the growth stages of pastures, these formulas were derived:
1 Winter & early spring - before stem growth x125 + 640
2 Late spring & early summer - during stem growth x130 + 990
3 Mid summer x165 + 1480
4 Early autumn - before autumn rain x159 + 1180
5 Late autumn - after rain x 157 + 970
Dairy NZ also developed these month based formulas:
Months
(Southern hemisphere)
Plate meter equations
(Dairy pastures)
Winter (April/September)
Plate meter reading x 140 + 500 (factory default)
October
Plate meter reading x 115 + 850
November
Plate meter reading x 120 + 1000
December
Plate meter reading x 140 + 1200
January
Plate meter reading x 140 + 1200
February
Plate meter reading x 185 + 1200
March
Plate meter reading x 170 + 1100