Trial Results

: Click here for summary table (pdf)

To date, 52 trials nationwide have been conducted on a mixture of dry and irrigated land, on clover based pasture over periods ranging from 15 to 47 days.

Average trial length was 24 days
Approximately 100,000 individual pasture measurements
4 trials did not show a nitrogen response
All trials replicated to take into account variations between trial plots.

Click here for summary table (pdf)

Nitrogen Response Trials

Our 2009 trial programme is currently underway. Full trial results will be loaded as they become available.

Autumn 2009 trials

Donaghys - Culverden 2		Donaghys - Lake Taupo 1
Donaghys - Dargaville		Donaghys - Lake Taupo 2
Donaghys - Dunsandel 2		Donaghys - Waitaki
Donaghys - Dunsandel 3		Donaghys - Whangarei
Donaghys - Dunsandel 4		Donaghys - Rolleston (Spread vs Spray)

Summer 2008/09 trials

Donaghys - Culverden		Donaghys - West Coast 1
Donaghys - Dunsandel		Donaghys - West Coast 2
Donaghys - North Canterbury (Spread vs Spray)		Donaghys - West Coast 3

Spring 2008 trials

Donaghys - Castlerock		Donaghys - Rakaia
Donaghys - Eyrewell		Donaghys - Rangiora
Donaghys - Foxton		Donaghys - Riversdale
Donaghys - Irwell		Donaghys - Tauranga
Donaghys - Kaitaia		Donaghys - Temuka
Donaghys - New Plymouth		Donaghys - West Eyreton
Donaghys - Oxford

Summer 2007/08 trials

Donaghys - Ashburton		Donaghys - Rakaia
Donaghys - Burnham		Donaghys - Tai Tapu
Donaghys - Darfield		Independent - Canterbury

Spring 2007 trials

Independent - Dairy		Independent - Waikato
Independent - Sheep		Independent - Winchmore
Independent - Waikato (Dry)

Autumn 2007 trials

Donaghys - Aylesbury 1 * +		Donaghys - Darfield 2 *
Donaghys - Aylesbury 2 * +		Donaghys - Springfield *
Donaghys - Darfield 1 *		Donaghys - Woodend *

Cool Season Trials - No Nitrogen Response

Independent Waikato		Independent Northland 2
Independent Rangiora		Donaghys - Hinds * +

* Trial conducted by Mark Hamilton-Manns of Grassworks, under contract by Donaghys
+ Trial overseen by Asure, independent verification agency
@ Trial had no clover present in the pasture