This project aims to evaluate the effectiveness of nitrogen fixation in pulses through improved rhizobial strains in the GRDC Northern region. It is a collaboration with NSW DPI and is funded by GRDC. Field trials are being conducted at three locations (Condobolin, Cowra and Griffith) as part of this project. Our site will host 4 trials in 2020.
- Elite advanced SA strains: Four elite advanced rhizobia strains, two from SARDI (SRDI969, SRDI970) and two from Murdoch University (WSM1483 and WSM4643) were compared to the current Group E (SU303) and Group F (WSM1455) commercial strains with a nil inoculant treatment included as a control at Griffith, Condobolin and Cowra in 2019 on lentils, field peas and vetch. In 2020 this site is over-sown with wheat to test the saprophytic competence of strains going forward
- Herbicide screen 2019/2020: The aim of this trial is to assess the impact of 10 herbicides commonly used in the growing season or for summer weed control on pulse nodulation. The herbicides were applied in the fallow in 2019 and then sown with pulses (Vetch, field peas and lentils) in 2020.
- Herbicide screen 2020/2021: The above herbicide trial will be repeated over 2020/2021, a fresh site will be set up in 2020 in wheat.
- Nitrogen transformation trial: The purpose of this trial is to measure nitrogen benefit of the pulse. Four treatments nil, WSM1455, WSM4643, SRDI969 by 3 pulse types (field peas, vetch and lentils) and canola will be sown in 2020 and wheat will be sown over the plots in 2021.