Visit to green house iari, new delhi
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Transcript of Visit to green house iari, new delhi
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VISIT TO GREEN HOUSE IARI, NEW DELHI
PRESENTED BY
MANISHA DUHAN
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INTRODUCTION
• India has entered the era of green house cultivation more recently and the total area under protected vegetable production is nearby approached 10000 ha
• The protected cultivation technology can be utilized for year round and offseason cultivation of high value low volume vegetable crops, production of virus free seedlings , quality hybrid for seed production and as a tool for disease resistance breeding programmes .
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THREE FEATURES OF PROTECTED CULTIVATION
• GREEN HOUSE GROUP:- Glass house, polyhouse, shade net house, insect proof net house.
• TUNNEL GROUP:- high tunnel, low tunnel, clotches.
• SURFACE COVER GROUP:- plastic mulch, biomulch.
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GREEN HOUSE GROUP
FEATURES MATERIAL USEDFRAME MATERIAL WOOD/STEEL/ALUMINIUM
GLAZING MATERIAL GLASS/POLYETHYLENE
COVERING MATERIAL ACRYLIC/FIBRE GLASS/POLYCARBONATE
FILMS POLYETHYLENE /PVC/POLYESTER
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TUNNEL GROUP
• Also called micro polyhouse • Temporary structure, for short duration and
need based structure• High tunnel:- also called walking tunnel 1-2 ft
height , mostly 1m wide suitable • Low tunnel:- not walking type, cucurbits can
be grown in early 60- 90 days during months of november, december, january.
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SURFACE COVER GROUP
• Plastic mulch:- creats more efficient microclimate through moisture retention (saving moisture- 4%) , minimise weed loss upto 90-95 % , increase productivity(25-30)%.
• Sandy soil size of mulch 25-30 micron and clay soil 50-100 micron.
• Suitable for rainfed crop conditions.• Increase crop life upto 60 days• Increase earliness by 20- 30 days.
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CROP ROTATION IN GREEN HOUSE
• PLAINS:- tomato, capsicum,chillies, cucumber ( starts last week of july – last week of august upto may-june)
• HILLS:- starts from march april and upto november crops rotation will takes place.
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QUALITY OF COVERING MATERIAL• POLYTHENE:- 200 micron for polyhouse and
100 micron for high tunnel, uv stablized transparent.
• SHADE NET QUALITY :- 30-50% Shade in some cases upto 70 % , uv stabilized green and black colour shade nets.
• I.P NET QUALITY :- white, made up of nylon and size 40-50 mesh per square inch.
• PLASTIC MULCH:- 25- 50 micron normally.
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FACTORS INVOLVED FOR CROP PRODUCTION
• TEMPERATURE:- 25-30⁰C • LIGHT :- 700-800 Watt per metresecond• RELATIVE HUMIDITY:- 65-75%• CARBONDIOXIDE:- 300-1000 ppm • WATER :- depends on crop • NUTRIENTS:- Proper ratio of all essential
nutrients should be given( fertigation process employed in green houses for fulfilling regquirement of water and nutrients)
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QUALITY OF IRRIGATION WATER
• ELECTRICAL CONDUCTIVITY:- ≤ 1• PH :- 7• TOTAL DISSOLVED SOLIDS:-1000-1500• Drip irrigation is mandatory for every every
protected cultivation technology.• At IARI,ND israel automatic model is used for
fertigation process which is fully computerized.
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CULTIVARS OF CROPS GROWN IN PROTECTED CULTIVATION (IARI)
• TOMATO:- GS600, Himsour, rituja, ID 32, ID 37• CUCUMBER:- Aasma, Viza, Defender, Sandhya• CAPSICUM:- 1) Red- insperation, laxmi• 2) YELLOW- Kanchan, supergold, California
wonder, delux, small orange• CHILLI :- Indus 365, US730, angel, hungarian• CHERRY TOMATO:- Pusa cherry• SUMMER SQUASH:- Long green, pusa alankar,
dhoom 2, DS-8
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NURSERY AT IARI NEW DELHI
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SEEDLINGS RAISED IN NURSERY
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PRECAUTIONS IN PROTECTED CULTIVATION
• All ventilation curtains should be closed during evening to night.
• Ventilation should be provided 2-3 hours in winter and 4 hours in summer.
• During winter season open shade net cover, summer from 11am - 4 pm cover shade net
• Drip irrigation mandatory• Fertigation schedulling 10-15 days interval• Pollination is must in tomato by blowers in
winter season