The land institute says a proposal awarding portions of land to labourers should be carefully interrogated.
While Cosatu welcomed the pay increase, it said wages were still far too low.
The protest turned violent on Monday when strikers caused chaos, setting a truck alight.
The union says very few farmers stick to the R105 per day agreement.
The Labour Department has been visiting farms in the Western Cape to check their labour compliance.
Despite minimal job loss, AgriSA president says the agriculture industry has taken a knock.