Planning polyhouse farming in Karimganj? Karimganj is a town in Sribhumi district, Assam, home to about 57,000 people (Census 2011)[1], about 480 km from Kolkata. We have used the monthly climate for Karimganj to plan a structure, a growing system and a crop calendar, so you can compare them with your own plot and buyers.
Climate for polyhouse farming in Karimganj
April is the hottest month in Karimganj, with average daily highs of about 33°C. January has the coolest nights, averaging 11°C.[2] The area gets about 2,912 mm of rain a year, most of it in April to October, peaking in June at about 539 mm. Average humidity stays at 75% or more in May to December, which raises the risk of leaf disease and slows evaporative cooling. Karimganj sits about 13 m above sea level.[1] On the Köppen–Geiger climate map, Karimganj falls in the humid subtropical with dry winters zone (Cwa).[3]
Karimganj climate by month
Month
Avg high (°C)
Avg low (°C)
Humidity (%)
Rain (mm)
Jan
24.2
10.6
72
8
Feb
27.7
13.2
64
31
Mar
31.8
17.6
59
87
Apr
32.7
21.7
72
303
May
32.4
23.9
80
427
Jun
32.1
25.1
87
539
Jul
32.1
25.3
88
523
Aug
32.2
25.3
87
427
Sep
31.5
24.6
87
338
Oct
30.5
21.8
83
185
Nov
27.6
16.7
80
23
Dec
24.6
12.4
78
21
Area averages (a grid cell of about 50 km) for 2001–2025, from NASA POWER, centred on Karimganj, adjusted for the town's elevation[4]. Rainfall and night temperatures at your plot can differ, especially near hills and the coast.[2]
Advantages of protected cultivation in Karimganj
1
Year-round crops
Under cover, chilli pepper can be grown for 11 months a year in Karimganj, so you can supply buyers every week instead of one open-field season.
2
Better yield and price
Plants grow without rain, hail and wind damage, so yields are higher and more even, and clean, graded produce sells at a better price, especially off-season.
3
Less water
Drip irrigation under cover uses less water than flood irrigation, and the roof keeps June's 539 mm of rain off the crop and the soil.
4
Less pesticides
Insect net on vents and doors keeps out most pests, and controlled ventilation helps with leaf disease in the humid months (May to December), so you spray less often.
5
Subsidy eligible
Polyhouse, shade net and nethouse projects in Assam can apply for Mission for Integrated Development of Horticulture (MIDH) assistance through the state horticulture department.[5]
Which polyhouse suits Karimganj?
For polyhouse farming in Karimganj, the structure decides which months you can crop and what it costs to run. With average highs between 24°C and 33°C through the year, Karimganj suits a naturally ventilated polyhouse for most crops. Fan & Pad cooling is rarely needed; spend the budget on good ventilation, insect net and a shade screen. Plan for heavy rain in June (about 539 mm): raise the plinth, size the gutters for that month and keep drains away from the nutrient tank.
A nethouse, the lowest-cost option, can grow hardy crops in November to March, when it is mild and fairly dry.
Crops for Karimganj
Based on Karimganj's climate, the crops with the longest growing windows are chilli pepper (11 months), cucumber (9 months) and brinjal (9 months). Chilli pepper fits February to December in a naturally ventilated polyhouse. Lilium and broccoli are hard to time here, so we would leave them out of the first season. These are the crops we would plan first for polyhouse farming in Karimganj.
Months each crop suits in Karimganj
Crop
Naturally ventilated polyhouse
Capsicum
Feb and Oct–Dec
Tomato
Oct–Feb
Cucumber
Mar–Nov
Chilli pepper
Feb–Dec
Brinjal
Mar–Nov
Lettuce
Nov–Feb
Broccoli
Difficult
Strawberry
Dec–Jan
Rose
Nov–Feb
Gerbera
Nov–Feb
Carnation
Dec–Jan
Chrysanthemum
Nov–Feb
Anthurium
Nov
Orchids
Nov
Lilium
Difficult
Kryzen planning estimate from the monthly averages above and each crop's usual day and night temperature range. Variety, soil or substrate temperature and shading change the result, so confirm with a trial.
₹6,913Spending per person per month, urban Assam, 2023–24[6]
480 kmto Kolkata, the nearest metro (straight line)
Urban households in Assam spent an average of ₹6,913 per person per month in 2023–24, close to the all-India urban average of ₹7,078.[6] Local demand in Karimganj may be small for exotic greens, so plan where the rest of the harvest goes. Silchar, about 40 km away, is the nearest larger market on our list.
Polyhouse farming in Karimganj with Kryzen
We have built 2 projects in Assam so far (see our project map (opens in a new tab)). Karimganj is about 1,830 km in a straight line from our Chhatrapati Sambhajinagar warehouse, our nearest site.
Towns near Karimganj
We also plan and build farms in these towns near Karimganj:
Map: LGD 2024 boundaries via bharatlas, CC BY 4.0. For illustration only.
Polyhouse farming in Karimganj: FAQs
Can a polyhouse farm run all year in Karimganj?
Yes, with the right structure. For Karimganj we would plan a naturally ventilated polyhouse. Even then, lettuce is hard to grow in May to September, so plan another crop for those months.
Which polyhouse is best for Karimganj?
With April highs of about 33°C and 72% average humidity in that month, we would start with a naturally ventilated polyhouse.
Which crops should I grow in a polyhouse in Karimganj?
Going by the monthly climate, tomato, capsicum and chilli pepper have the longest growing windows. Confirm prices and volumes with buyers before you plant.
Is polyhouse farming profitable in Karimganj?
It can be, if the crop, the structure and the buyers match. In Karimganj, chilli pepper and cucumber have the longest seasons under cover. Confirm prices and volumes with buyers first; our Detailed Project Report works out the cost, yield and returns for your plot.
Does Kryzen build polyhouses in Karimganj?
Yes. Our nearest site is our Chhatrapati Sambhajinagar warehouse, about 1,830 km away, and we have built 2 projects in Assam.
Is there a subsidy for polyhouse or hydroponic farms in Assam?
Yes. Protected cultivation projects in Assam can apply for Mission for Integrated Development of Horticulture (MIDH) assistance through the state horticulture department. Check the current rate and area limit when you apply.
Discuss your Karimganj farm project
Share your plot location, water test and crop targets. We will suggest the right structure and growing system, and send an itemised quotation.
A computer engineer turned hydroponic farmer from a multigenerational farming family in Satara. Sudhir founded Kryzen in 2019, and the team has since built 350+ protected and hydroponic farms across India.
