Timely sowing window for irrigated wheat in north India and how delay affects yield.
4 Answers
The best time to sow wheat in Punjab is from the last week of October to around 20 November. This is the optimum window for timely-sown irrigated varieties like HD-3086, PBW 826 and DBW 327, which get the cool weather they need for good tillering and grain filling. Sowing after 25 November is treated as late sowing, and yield drops by roughly 1 to 1.5 quintals per acre for every week of delay because grain filling then runs into March heat. Aim to complete sowing by mid-November for the highest yield. Make sure soil has good moisture (rauni) and sow at 5 cm depth.
In Ludhiana I always finish sowing by 10-12 November. The years I sowed in early December the crop suffered in March heat and I lost yield. Earlier is better.
One practical tip: do not rush sowing too early either. If you sow before mid-October the crop can flower in a warm spell and tiller poorly. The cool last week of October has worked best for me near Moga.
For us the bottleneck is paddy harvest. If your field frees up late, a Happy Seeder or Super Seeder lets you sow on time without burning residue. Check your local KVK or co-op for the machine on custom hire so you do not slip past the window.