MOP vs SOP for chloride sensitive crops, quality, cost, when to choose each.
Is muriate of potash (MOP) or sulphate of potash (SOP) better for chilli and tomato?
KKotaiah Naidu6 महीने पहले · 159 व्यू
3 जवाब
🌾Farmer.in Krishi Teamविशेषज्ञ ✓6 महीने पहले
Both supply potassium, but MOP (muriate of potash, 60 percent K2O) also adds chloride and is much cheaper, while SOP (sulphate of potash, 50 percent K2O) supplies sulphur instead of chloride and costs more. For chloride sensitive and quality crops like chilli, tomato, potato, tobacco, and many fruits and vegetables, SOP is often preferred near harvest because it can improve quality and avoids chloride buildup, and it is useful on saline soils. For most field crops on normal soil, MOP is fine and economical. A practical approach is MOP early and SOP closer to fruiting for quality crops, if budget allows. Decide based on your crop, soil chloride and salinity, and your Soil Health Card; consult your KVK and do not over apply.
SSubba Rao Gummadi6 महीने पहले
For my chilli I do exactly the split the team mentioned, MOP in the early growth and switch to SOP once flowering and fruiting start. The fruit colour and keeping quality were clearly better with SOP near the end, and the traders noticed. Doing the whole crop on SOP was too costly for me.
AAnjaneyulu Reddy5 महीने पहले
If your water or soil is on the salty side, SOP is the safer pick because MOP keeps adding chloride salt. My tomato on a slightly salty patch did better after I moved off MOP. On a normal sweet water field though, MOP is honestly fine and saves money.