Authors: Fiona Tomney1, Brian Dzoma2, Ross Ballard2, Nigel Wilhelm1,2
Research Team: Ian Richter1, Brett Hay1
1SARDI, Minnipa Agricultural Centre; 2SARDI, Waite Research Precinct
Funded By: SAGIT
Project Title: SARDI 515: Identifying the causes of unreliable N fixation by medic based pastures
Peer Review: Amanda Cook SARDI
Key Words: n fixation, medic, pasture, rhizobia, nodulation
- Applying Phosphorus (P) to a soil with low P reserves, when establishing a medic pasture, boosts shoot and root dry matter, improves root health and improves nitrogen (N) fixation.
- The addition of urea at seeding can reduce nodulation in medic pastures.
- Applying a full label rate of Agritone 750 (late) decreases pasture production and N fixation in actively growing medic pastures.
- Residues of the herbicide Logran can severely stunt medic growth.