Planning polyhouse farming in Silapathar? Silapathar is a small town in Dhemaji district, Assam, home to about 26,000 people (GeoNames)[1][2], about 850 km from Kolkata. This guide works from Silapathar'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 Silapathar
August is the hottest month in Silapathar, with average daily highs of about 34°C. January has the coolest nights, averaging 11°C.[3] The area gets about 2,430 mm of rain a year, most of it in April to October, peaking in July at about 494 mm. Average humidity stays at 75% or more in June to October, which raises the risk of leaf disease and slows evaporative cooling. On the Köppen–Geiger climate map, Silapathar falls in the humid subtropical with dry winters zone (Cwa).[4]
Silapathar climate by month
Month
Avg high (°C)
Avg low (°C)
Humidity (%)
Rain (mm)
Jan
22.5
11.0
65
19
Feb
25.5
13.2
63
45
Mar
29.3
16.7
60
88
Apr
31.5
20.3
65
221
May
32.9
23.0
69
303
Jun
33.5
25.3
76
402
Jul
33.0
25.6
80
494
Aug
33.6
25.8
78
393
Sep
32.2
24.4
78
320
Oct
29.9
20.9
75
117
Nov
26.3
16.1
71
20
Dec
23.2
12.5
69
8
Area averages (a grid cell of about 50 km) for 2001–2025, from NASA POWER, centred on Silapathar. Rainfall and night temperatures at your plot can differ, especially near hills and the coast.[3]
Advantages of protected cultivation in Silapathar
1
ವರ್ಷವಿಡೀ ಬೆಳೆಗಳು
A polyhouse stretches the season: in Silapathar cucumber can be grown for about 9 months a year under cover, longer than in the open field.
2
ಉತ್ತಮ ಇಳುವರಿ ಮತ್ತು ಬೆಲೆ
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
ಕಡಿಮೆ ನೀರು
Drip irrigation under cover uses less water than flood irrigation, and the roof keeps July's 494 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 October), so you spray less often.
5
ಸಬ್ಸಿಡಿಗೆ ಅರ್ಹ
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 Silapathar?
For polyhouse farming in Silapathar, the structure decides which months you can crop and what it costs to run. In Silapathar the heat comes with humidity: during June to August average humidity is about 78%. Wet pads cool much less in humid air: on a typical August afternoon they would only bring 34°C down to about 32°C. So we usually start with a tall naturally ventilated polyhouse with wide roof vents, insect net and a shade screen. A Fan & Pad polyhouse still makes sense if buyers need lettuce through the hottest months, but expect a smaller temperature drop than in dry inland towns.
Plan for heavy rain in July (about 494 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 Silapathar
Based on Silapathar's climate, the crops with the longest growing windows are cucumber (9 months), chilli pepper (9 months) and brinjal (7 months). Cucumber fits March to November in a naturally ventilated polyhouse. Lilium and carnation 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 Silapathar.
Months each crop suits in Silapathar
ಬೆಳೆ
ನೈಸರ್ಗಿಕ ವಾತಾಯನದ ಪಾಲಿಹೌಸ್
With Fan & Pad cooling
ಕ್ಯಾಪ್ಸಿಕಂ
Feb–Mar and Oct–Dec
Feb–Dec
ಟೊಮೆಟೊ
Oct–Mar
Sep–Jun
ಸೌತೆಕಾಯಿ
Mar–Nov
Mar–Nov
Chilli pepper
Feb–May, Jul and Sep–Dec
Feb–Dec
ಬದನೆ
Mar–May, Jul and Sep–Nov
Mar–Nov
ಲೆಟ್ಯೂಸ್
Nov–Feb
Oct–May
ಬ್ರೊಕೊಲಿ
Dec–Jan
Nov–Mar
ಸ್ಟ್ರಾಬೆರಿ
Dec–Jan
Dec–Feb
ಗುಲಾಬಿ
Nov–Feb
Oct–Apr
ಜರ್ಬೆರಾ
Nov–Feb
Oct–May
ಕಾರ್ನೇಷನ್
Dec–Jan
Nov–Mar
ಸೇವಂತಿಗೆ
Nov–Feb
Oct–Apr
ಆಂಥೂರಿಯಂ
Mar and Oct–Nov
Mar–Nov
ಆರ್ಕಿಡ್ಗಳು
Mar and Oct–Nov
Mar–Nov
ಲಿಲಿಯಂ
Dec–Jan
Nov–Mar
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]
850 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 Silapathar may be small for exotic greens, so plan where the rest of the harvest goes.
Polyhouse farming in Silapathar with Kryzen
We have built 2 projects in Assam so far (see our project map (ಹೊಸ ಟ್ಯಾಬ್ನಲ್ಲಿ ತೆರೆಯುತ್ತದೆ)). Silapathar is about 2,150 km in a straight line from our Chhatrapati Sambhajinagar warehouse, our nearest site.
Towns near Silapathar
We also plan and build farms in these towns near Silapathar:
Map: LGD 2024 boundaries via bharatlas, CC BY 4.0. For illustration only.
Polyhouse farming in Silapathar: FAQs
Can a polyhouse farm run all year in Silapathar?
Yes, with the right structure. For Silapathar we would plan a tall naturally ventilated polyhouse with wide vents and insect net. Even then, lettuce is hard to grow in June to September, so plan another crop for those months.
Which polyhouse is best for Silapathar?
With August highs of about 34°C and 78% average humidity in that month, we would start with a tall naturally ventilated polyhouse with wide vents and insect net.
Which crops should I grow in a polyhouse in Silapathar?
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 Silapathar?
It can be, if the crop, the structure and the buyers match. In Silapathar, cucumber and chilli pepper 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 Silapathar?
Yes. Our nearest site is our Chhatrapati Sambhajinagar warehouse, about 2,150 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 Silapathar 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.
