Planning polyhouse farming in Nalbari? Nalbari is a small town in Nalbari district, Assam, home to about 28,000 people (GeoNames)[1][2], about 530 km from Kolkata. This guide works from Nalbari's own monthly climate to suggest the protected structure, the crops to start with, and the months each crop is likely to do well.
Climate for polyhouse farming in Nalbari
June is the hottest month in Nalbari, with average daily highs of about 33°C. January has the coolest nights, averaging 10°C.[3] The area gets about 1,945 mm of rain a year, most of it in April to October, peaking in June at about 359 mm. Average humidity stays at 75% or more in May to January, which raises the risk of leaf disease and slows evaporative cooling. Nalbari sits about 42 m above sea level.[2] On the Köppen–Geiger climate map, Nalbari falls in the humid subtropical with dry winters zone (Cwa).[4]
Nalbari climate by month
Month
Avg high (°C)
Avg low (°C)
Humidity (%)
Rain (mm)
Jan
21.2
10.3
77
7
Feb
24.1
12.6
71
19
Mar
28.4
16.5
64
53
Apr
31.1
20.8
70
232
May
32.1
23.8
76
288
Jun
32.6
25.9
81
359
Jul
32.1
26.2
85
350
Aug
32.0
26.1
85
273
Sep
30.9
24.8
85
219
Oct
28.8
21.3
83
129
Nov
25.5
16.3
82
11
Dec
22.3
12.2
81
5
Area averages (a grid cell of about 50 km) for 2001–2025, from NASA POWER, centred on Nalbari. Rainfall and night temperatures at your plot can differ, especially near hills and the coast.[3]
Advantages of protected cultivation in Nalbari
1
Year-round crops
Under cover, chilli pepper can be grown for 11 months a year in Nalbari, 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 359 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 January), 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 Nalbari?
For polyhouse farming in Nalbari, the structure decides which months you can crop and what it costs to run. With average highs between 21°C and 33°C through the year, Nalbari 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 359 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 Nalbari
Based on Nalbari'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 Nalbari.
Months each crop suits in Nalbari
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]
530 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 Nalbari may be small for exotic greens, so plan where the rest of the harvest goes. Guwahati, about 40 km away, is the nearest larger market on our list.
Polyhouse farming in Nalbari with Kryzen
We have built 2 projects in Assam so far (see our project map (opens in a new tab)). Nalbari is about 1,800 km in a straight line from our Chhatrapati Sambhajinagar warehouse, our nearest site.
Towns near Nalbari
We also plan and build farms in these towns near Nalbari:
Map: LGD 2024 boundaries via bharatlas, CC BY 4.0. For illustration only.
Polyhouse farming in Nalbari: FAQs
Can a polyhouse farm run all year in Nalbari?
Yes, with the right structure. For Nalbari 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 Nalbari?
With June highs of about 33°C and 81% average humidity in that month, we would start with a naturally ventilated polyhouse.
Which crops should I grow in a polyhouse in Nalbari?
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 Nalbari?
It can be, if the crop, the structure and the buyers match. In Nalbari, 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 Nalbari?
Yes. Our nearest site is our Chhatrapati Sambhajinagar warehouse, about 1,800 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 Nalbari 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.
