Sulphur deficiency mustard groundnut, gypsum, bentonite sulphur dose, yellowing.
How to correct sulphur deficiency in mustard and oilseeds?
PPawan Meena1yr ago · 406 views
4 Answers
🌾Farmer.in Krishi TeamExpert ✓1yr ago
Oilseeds and pulses are heavy sulphur feeders, and deficiency shows as yellowing of younger leaves first (unlike nitrogen, which hits older leaves) plus poor oil content. Apply sulphur at sowing through gypsum (about 100 to 200 kg per acre depending on soil test) or bentonite sulphur (about 8 to 10 kg per acre) or single super phosphate, which supplies both phosphorus and sulphur. For mustard, sulphur clearly improves seed yield and oil percentage. Apply before or at sowing as a basal dose and mix into soil. Always confirm the exact requirement from your Soil Health Card or KVK because over-application is wasteful.
OOmprakash Dhakad1yr ago
Switching part of my phosphorus to SSP instead of DAP gave me the sulphur for free in mustard, since SSP carries both P and sulphur. The crop looked greener and the oil man paid a touch more for the seed.
LLata Ahirwar1yr ago
Bentonite sulphur is easier to handle and spread evenly than a big quantity of gypsum on my small plot. It releases slowly, so I apply it at sowing and not as a late top dressing.
GGulab Meena11mo ago
The yellowing on new leaves fooled me into spraying urea first, which did nothing. A sulphur basal the next season fixed it. So check whether it is the young or old leaves yellowing before deciding, and match the dose to your soil test.