Lisa Matthews

@BerjakDonna @GrasslandSocSA Thanks Donna. I used historical trial data for soil carbon, (taken annually dec/jan). N2O and CH4 fluxes are weekly from one month after planting (June 2021) till about plant elongation. We actually have a full year of measurements but we are still but processing the rest!

@GrasslandSocSA @LisaMat13909306 @LisaMat13909306 hi Lisa, at what point in the long term rotation cycle did you do your measurements? Very interesting

Greenhouse gas emissions from soils across different crop rotations. Cash crops only vs. mixed crop-livestock systems? #GSSACongress57 #ConservationAgriculture #N2Oemissions @LisaMat13909306

@LisaMat13909306 enlightening us with her study in the Planted pastures poster session @StellenboschUni #GSSACongress57

@BerjakDonna @GrasslandSocSA Thanks @BerjakDonna! They will only be grazing the medics and the cover crop mix in this trial. In practice this system could be potentially be managed in a way where the animals system benefit more from the cash-crops through residues, dual-purpose crops and sacrificial grazing

@GrasslandSocSA @LisaMat13909306 @LisaMat13909306 Very good poster. Will livestock be grazing wheat, canola too or just the medic?

Can we can use livestock to make our crop rotations more environmentally sustainable? #GSSACongress56 #ConservationAgriculture #ClimateChange @LisaMat13909306

@ariseoharjuna @GrasslandSocSA Thanks! Animals make it financially viable to have the N fixer as a pasture. Currently, medics leave more N behind in the system than a legume cash crop (as you are harvesting the N rich pulses). Pastures are also more resilient to irregular rainfall than wheat, lowering risk

The experiment will demonstrate the legacy effects of multi-species grassland mixtures in a crop rotation system and the benefits of multi-species mixtures for yield, weed suppression, nitrogen use efficiency, forage quality #GSSACongress56 #LegacyNet #nitrogen @Nittygr05781999