Lisa Matthews

MSc student in Agronomy currently working on crop-livestock integration as a means to reduce system greenhouse gas emissions and environmental impact.

[Lisa Matthews @LisaMat13909306]

@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 @GrasslandSocSA]

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

[GrasslandSocSA @GrasslandSocSA]

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

[Lisa Matthews @LisaMat13909306]

@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

[Lisa Matthews @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

[GrasslandSocSA @GrasslandSocSA]

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

[GrasslandSocSA @GrasslandSocSA]

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