diff --git a/FarmmapsKPI/KPIdefinitions.csv b/FarmmapsKPI/KPIdefinitions.csv
index b26da88..5460086 100644
--- a/FarmmapsKPI/KPIdefinitions.csv
+++ b/FarmmapsKPI/KPIdefinitions.csv
@@ -11,9 +11,9 @@ B2,disposal,
 B2,pFertillizerNKgHa,
 B2,sowPlantingNKgHa,
 C1,organic matter supply,"Organic matter surplus = Organic matter from manure + Crop residues to soil - organic matter removal through harvested product. Calculated KPI internal model & parameters and from user input: yield and manure applications. ""Effective"" means netto, after correction for carbon respiration by soil microbial activity"
-C1,fertilizerEom,
-C1,greenManureEom,
-C1,cropLeftoversEom,
+C1,fertilizerEom,"Effective organic mater added through fertilizer (animal manure, compost, etc)"
+C1,greenManureEom,Effective organic mater added through green manure (also called cover crop)
+C1,cropLeftoversEom,Effective organic mater added through crop residues
 D1,pesticides,"kg/ha of active ingredient. Sum over kg a.i.  of the different crop protection agents applied, with concentration (kg a.i. / kg or litre) of  crop protection agents retrieved from CTBG"
 E1,mpb,"milieubelastingspunten. For each pesticide applied show 3 sub-mbp's: aquaticLife, groundWater, soilLife"
 E1,mpb,