Planning polyhouse farming in Rangia? Rangia is a small town in Kamrup district, Assam, home to about 28,000 people (GeoNames)[1][2], about 540 km from Kolkata. We have used the monthly climate for Rangia 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 Rangia
June is the hottest month in Rangia, with average daily highs of about 32°C. January has the coolest nights, averaging 10°C.[3] The area gets about 1,850 mm of rain a year, most of it in April to October, peaking in June at about 338 mm. Average humidity stays at 75% or more in June to December, which raises the risk of leaf disease and slows evaporative cooling. Rangia sits about 39 m above sea level.[2] On the Köppen–Geiger climate map, Rangia falls in the humid subtropical with dry winters zone (Cwa).[4]
Rangia climate by month
Month
Avg high (°C)
Avg low (°C)
Humidity (%)
Rain (mm)
Jan
21.5
10.4
74
7
Feb
24.6
12.8
67
19
Mar
29.2
16.7
59
54
Apr
31.5
20.8
66
223
May
32.0
23.6
74
275
Jun
32.4
25.6
80
338
Jul
31.8
25.9
84
329
Aug
31.7
25.8
84
258
Sep
30.6
24.6
85
209
Oct
28.7
21.2
81
119
Nov
25.4
16.3
80
13
Dec
22.4
12.2
79
6
Area averages (a grid cell of about 50 km) for 2001–2025, from NASA POWER, centred on Rangia. Rainfall and night temperatures at your plot can differ, especially near hills and the coast.[3]
Advantages of protected cultivation in Rangia
1
Year-round crops
Under cover, chilli pepper can be grown for 11 months a year in Rangia, 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 338 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 (June 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 Rangia?
For polyhouse farming in Rangia, the structure decides which months you can crop and what it costs to run. With average highs between 22°C and 32°C through the year, Rangia 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 338 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 February to March and November, when it is mild and fairly dry.
Crops for Rangia
Based on Rangia'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 Rangia.
Months each crop suits in Rangia
Crop
Naturally ventilated polyhouse
Capsicum
Feb–Mar and Sep–Dec
Tomato
Sep–Mar
Cucumber
Mar–Nov
Chilli pepper
Feb–Dec
Brinjal
Mar–Nov
Lettuce
Nov–Feb
Broccoli
Dec–Jan
Strawberry
Dec–Feb
Rose
Nov–Feb
Gerbera
Nov–Feb
Carnation
Dec–Feb
Chrysanthemum
Nov–Feb
Anthurium
Mar and Oct–Nov
Orchids
Mar and Oct–Nov
Lilium
Dec–Jan
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]
540 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 Rangia may be small for exotic greens, so plan where the rest of the harvest goes. Guwahati, about 30 km away, is the nearest larger market on our list.
Polyhouse farming in Rangia with Kryzen
We have built 2 projects in Assam so far (see our project map (opens in a new tab)). Rangia is about 1,810 km in a straight line from our Chhatrapati Sambhajinagar warehouse, our nearest site.
Towns near Rangia
We also plan and build farms in these towns near Rangia:
Map: LGD 2024 boundaries via bharatlas, CC BY 4.0. For illustration only.
Polyhouse farming in Rangia: FAQs
Can a polyhouse farm run all year in Rangia?
Yes, with the right structure. For Rangia we would plan a naturally ventilated polyhouse. Even then, lettuce is hard to grow in June to September, so plan another crop for those months.
Which polyhouse is best for Rangia?
With June highs of about 32°C and 80% average humidity in that month, we would start with a naturally ventilated polyhouse.
Which crops should I grow in a polyhouse in Rangia?
Going by the monthly climate, capsicum, chilli pepper and tomato have the longest growing windows. Confirm prices and volumes with buyers before you plant.
Is polyhouse farming profitable in Rangia?
It can be, if the crop, the structure and the buyers match. In Rangia, 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 Rangia?
Yes. Our nearest site is our Chhatrapati Sambhajinagar warehouse, about 1,810 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 Rangia 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.
