Crop Solutions · Season guide
Maize
Winter maize responds strongly to a well-timed nitrogen schedule. Urvar's program supports early growth and corrects zinc deficiency across the season's top dressings.
Season schedule
What to apply, and when
Stage timing comes from agricultural-university research (cited). Doses are Urvar's own label doses, shown per katha with bigha and acre equivalents.
1 bigha = 20 katha (West Bengal) · 1 acre ≈ 60.5 katha
- 1
Mid-November1
Land preparation & sowing
In BCKV trials at Gayeshpur, winter maize was sown in mid-November at 60 × 25 cm spacing. Half the nitrogen and all of the phosphorus and potassium go in as a basal dose.
Enriched Vermicompost
During land preparation
17–25 kg per katha
340–500 kg per bigha · ≈ 1–1.5 t per acre
Label dose for Paddy (closest crop row)
PROM – Phosphate Rich Organic Manure
During final land preparation
1.5–2 kg per katha
30–40 kg per bigha · ≈ 91–121 kg per acre
Label dose for Paddy (closest crop row)
- 2
20 days after sowing1
First weeding
Manual weeding at 20 days after sowing keeps early growth clear of competition.
- 3
40 days after sowing1
Top dressing & earthing up
A quarter of the nitrogen is top-dressed at 40 days after sowing, along with a second weeding and earthing up (ridging soil onto the base of the plant).
Humic Acid Liquid
Mix in 15–20 litres water per Katha
30–60 ml per katha
0.6–1.2 L per bigha · ≈ 1.8–3.6 L per acre
Label dose: foliar spray
Zinc EDTA 12%
Mix in 15–20 litres water per Katha
3–7 g per katha
60–140 g per bigha · ≈ 182–424 g per acre
Label dose: foliar spray
- 4
70 days after sowing1
Second top dressing
The last quarter of the nitrogen is top-dressed at 70 days after sowing. In BCKV trials, 200:100:100 kg N:P₂O₅:K₂O per hectare gave the highest productivity.
PROM – Humic Based Flowering Booster
Apply 10–15 days before flowering (label timing for flowering crops)
1.5–2 kg per katha
30–40 kg per bigha · ≈ 91–121 kg per acre
Label dose for Paddy (closest crop row)
Boron EDTA
Mix in 15–20 litres water per Katha
2–4 g per katha
40–80 g per bigha · ≈ 121–242 g per acre
Label dose: foliar spray
Deficiency guide
Spot it, fix it
General symptoms that apply across crops. Confirm with a soil or leaf test before treating.2
Upper leaves show interveinal chlorosis, eventually whitening. Leaves may be small and distorted, in a rosette form.
Growth is slow and stunted, and older leaves turn purple, especially on the underside.
Maize FAQ
Common questions
How do I convert a per-katha dose to bigha or acre?
Multiply by 20 for a West Bengal bigha (1 bigha = 20 katha), or by about 60.5 for an acre. Every dose on this page already shows all three.
Which Urvar products does the Maize program use?
Land preparation & sowing: Enriched Vermicompost, PROM – Phosphate Rich Organic Manure. Top dressing & earthing up: Humic Acid Liquid, Zinc EDTA 12%. Second top dressing: PROM – Humic Based Flowering Booster, Boron EDTA.
Can I get a plan for my own field?
Yes. Message us on WhatsApp with your district, field size and planting date, and our team will reply with a plan.
Sources
- 1. Biswas, S., Das, R. and Dutta, D. (2025). Irrigation and primary nutrients' performance on winter maize productivity, profitability, energetics, and carbon footprint in Gangetic plains of India. Scientific Reports 15. Department of Agronomy, Bidhan Chandra Krishi Viswavidyalaya, Mohanpur. doi.org/10.1038/s41598-025-02896-x
- 2. TNAU Agritech Portal, Tamil Nadu Agricultural University: Mineral Nutrition – nutrient deficiency symptoms (general, all crops). agritech.tnau.ac.in/agriculture/agri_min_nutri_def_symptoms.html
Doses: Urvar Natural product labels. The Flowering Booster's timing follows its label guidance for flowering crops.
Get a Maize plan for your field
Tell us your district, field size and planting date on WhatsApp. Our team replies with a stage-by-stage plan and pricing.