Dear Doctor ..
Welcome ..India is a monsoon country with various shades of weather and climate prevailing across length and breadth of India ..The prevailing climate in a particular region decides about the success of vegetation , Next comes water and soil and last but most important factor is plant protection measures
When you manage these 4 factors efficiently then you will have success in your agri venture ..
The green house and polyhouse are structures meant for controlling growing conditions like temperatures , Humidity and light that are set in tune with the requirement of specific crop condition ..
These artificial structures are mainly used and useful in locations beyond 33 1/2 degree northern or southern latitude in world geographical locations where extreme climate like minus degree temperature prevails that freeze the crops and plant physiological process is totally arrested ..So in these location people use green house structures that generate heat and produce artificial lighting with the help of grow light necessary for plant growth and development ..
Where in hottest locations like madurai or similar area , when prevailing weather is very harsh in over vast land mass , controlling and growing successfull crops in a very small structures like green house is really costly and tough ..Because the capsicum can be grown successfully between temperature 14 degree celsius to 32 degree celsius but it requires an average daily temperature of around 25 ot 27 degree celsius to perform well in terms of yield and quality ..
The high prevailing temperature around 40 degree celsius definitely will have its harmful impact inspite of controlled temperature inside polyhouse by way of increased humidity ( Anything above 32 degree celsius will impact capsicum production due to various reasons that the high temeratures either prevent successful pollination ,, create stress in plants, affect nutrients uptake and utilization etc..etc... besides escalating incidence of powdery mildew disease and also wilt disease due to fusarium and sclerotium pathogenic fungi ) ..
Further in western climate where seeing sun in day itself is blessings for people and it is a rare phenomena to see sun the market price of vegetable produce is costly like USD 5 per kg of capsicum ( In indian curency the value is around Rs.250 - 300 per kg of capsicum ) ..
Here in India the green house capsicum sells in the market @ Rs.30 per kg and buyers price given to the producer ( Farmer ) around Rs.15-20 per kg ..But if you see the cost of special production structures like green house or polyhouse they say millions and millions for structures alone ..Other cost also accompany in the production process like special water soluble fertilizers , Co2 production , Water purification , 24 hours power supply ,round the clock monitoring totally involving huge money around Rs.40 to 50 lac for 1/2 acre ..
At the price of Rs.15 per kg capsicum you need to produce 3,33,333 kg fruits from half acre land ..To produce this much volume it will take atleast 5 to 6 years ..That means your ROI ( Return on investment ) will start well after 5 th year of investment ..Otherwise you will reach your Break even point ( BEP ) after 5 th year of your initial investment ..
However success is the rare chance except when you locate your project in a suitable place and rightly follow all the technical nuances sincerely ..
If at all you want to grow capsicum , I will advice your good self ( because you say you belong to Madurai ) to choose a nice location in the middle reaches of kodaikanal hills where the prevailing climate is highly conducive for capsicum production ..The alkaloid percentage is also very good with excellent consumer preference ..Individual fruit weight is also around 200 to 250 grams ..4 fruits weigh 1 full kg ..
As far as my knowledge is concerned most of the surgeons are doing farming mainly to refresh their mind after hours long surgery in blood and flesh ..If it is that I am telling what exactly is your idea behind farming , then you can do the farming without consideration to pecuniary benefit ..If otherwise , do bestow your serious attention to choose right location for doing commercial farming ...
To produce more in capsicum , you need to provide for good soil rich in 5 times more organic matter than usually applied , balanced nutrients in short frequency , judicious application of right quantity of growth promoters , pruning at regular interval to maintain right balance between vegetative growth and fruit production , regular preventive spray of chemicals mainly for sucking pest , timely application of micronutrients and secondary elements like Calcium and balanced application Sulphur and magnesium ..
So better do fix a right person for your project . I think there are lot of qualified and eligible consultants already registered with farmnest forum ..so you could find any one and run your project successfully ..