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Short Description

• Problem:
• Idea:
• Difficulty:
• Price Range:
• Material Needed:
• Geographic Area:
• Competencies:
• How Many people?
• How Long does it take?

The idea of a low-cost poly-house came to our mind in 2004 when Pradan initiated the implementation of land and water-based livelihood activities in the Mayurbhanj Team, with support from India Canada Environment Facility (ICEF). One of our major focusses, in this project, was to increase family incomes by providing individual irrigation infrastructure to each family through the construction of small farm ponds (average size 40 x 50 ft) and dug wells. Our most successful intervention, in terms of addressing land-based livelihoods, was pond-based agriculture. Within three years of the project, 570 families in 11 villages benefitted from the construction of 500 ponds and 25 dug wells. This intervention really changed the cropping pattern of the area from mono-crop paddy to vegetable cultivation on a large scale. An awareness of the change that had taken place was best expressed by a man in a local market, “Aji kali Karanjia re panipariba Pradan pain sabudine milu paruchhi” (Now-a-days vegetables are always available in Karanjia because of Pradan).

The climate of Karanjia is best suited for vegetable cultivation. The temperature starts falling from July onwards. People prefer to grow cole crops such as cabbage and cauliflower in early kharif, which starts from end of July.

Karanjia has good market linkages with Jamshedpur in Jharkhand and the coastal areas of Orissa. Middlemen from Jamshedpur and Anandpur in Keonjhar district and other coastal areas come directly to Karanjia to buy vegetables such as cabbages, cauliflowers, pumpkins, etc. In a season, farmers earn Rs 8,000 to Rs 10,000 through the sale of these cole crops. However, the nurseries for these cole crops often suffer due to heavy rains and to insect and pest infestations. This leads to losses and disappointment among the farmers.

To surmount these problems, our team initially thought of building portable poly-houses for individual families. We had been taught the concept of poly-house in the agriculture colleges that some of us had attended. A poly-house is a structure made of polyvinyl sheet. It is low-cost because the wood and bamboo and other materials used, barring the polyvinyl sheet, can be found locally.

The advantages of a poly-house are several. Plants can be grown as per the requirement, irrespective of the weather conditions, because it is a closed structure. The covering of polyvinyl sheets protects seedlings from insect and pest attack to a great extent, ensuring the production of healthy seedlings. Plants grow faster inside the structure because the temperature remains a little higher inside the poly-house, even when it is cooler outside.

Our team first made an arch-shaped bamboo frame covered with polyvinyl sheets. The frame was used to cover the bed and could be lifted for irrigation. One poly-house covered one bed with a capacity of a 1,000 seedlings. Initially, the farmers were excited about this structure. However, they faced some problems with this design. Strong winds blew away or damaged the portable polyvinyl cover because it was so light. Second, owing to the small enclosed space and height of the poly-house, there was an increase in the humidity and temperature inside resulting in the damping off of young seedlings. Damping off is a common fungal disease, which attacks seedlings, weakening the stems at the soil level. Infected seedlings usually die. Third, the frequent lifting of the frame for irrigation, and its being blown away occasionally by wind, resulted in the seedlings being highly vulnerable to infestation by pests.

Our team then designed a structure, 5 ft high, that covered two nursery beds, so that during irrigation there would be no need to lift the frame. The attempt was to ensure that it would not be easily blown away by the wind; the humidity would be less and, therefore, there would be lesser chances of the damping off of young seedlings; and the beds could be irrigated without lifting the structure, thereby limiting the entry of insects and pests. However, this structure too got damaged in very windy conditions and the humidity could not be controlled much due to poor ventilation. These experiences lead the team making further changes in the design of the low cost poly-house.

Success Story

Are important because they illustrate how a technology or a know-how have been adopted by some people and how they changed their lives. The story should be real and also show the difficulties that had to be overwhelmed. You are not selling a product, you are trying to give someone tools so he can decide if a technology is an appropriate solution to his problem or not.

Plans, Illustrations, Posters

Try to have the clearest illustrations possible, imagine them being photocopied 5 times and what's left of them. The best would be black and white line drawings. Have letters on the illustrations to make legends in several languages possible. Try to have precise plans, but keep in mind one should be able to adapt the design to it's possibilities. Ask yourself if a poster that could communicate the know-how would be relevant. Let some space for traductions in local languages, or make two versions of the poster. We will try to raise a community of illustrators to help by the illustrations, but try to make at least a scheme for the start, so that this scheme can be later refined.

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Rainwater harvesting

helptopic on images: [1]

Reference

This Article was initiated by Maud 09:16, 13 July 2009 (UTC), howtopedia.
You can find the original of this article at asdfghjkl.pdf

Contributions by:
M.Mitch, 13:40, Jan 14, 2009 (UTC)
V.Vople, 13:40, Jan 14, 2010 (UTC)
J.Johnson, 13:40, Jan 14, 2011 (UTC)

You should sign your comment:

• appending four tildes (~~~~) to the comment so as to add your user name plus date/time: Patricia Zhang 13:40, Jan 14, 2007 (UTC)
• Adding three tildes (~~~) will add just your user name: Patricia Zhang

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