Casa de vegetação rústica para agricultura familiar.

Abstract

The vegetation or greenhouses in general have high cost for most small vegetable growers. With a view to the production of low-cost constructed environments to promote environmental conditions suitable for the typical users of these buildings, the present study aimed to develop a model of rustic greenhouse at low cost for the production of vegetables, and measure the environmental conditions, the development of culture of lettuce and the cost-benefit of the building. The obtained results demonstrated that for the environmental conditions of air temperature and relative humidity there was no significant difference in or out of the building, there is, however, only the reduction of wind speed inside the greenhouse. For plants grown in the greenhouse the biometric results number of leaves, plant height, plant diameter, green mass and dry mass were greater than those cultivated plants in natural environment. With respect to the root size there was no significant difference between the cultivated plants in both environments. To assess the cost-benefit of building a simple economic analysis was carried out through a simulation made of estimated costs for the construction of the building and the productivity of crops of lettuce, tomato and strawberry in greenhouse. The results showed the economic viability of the rustic vegetable greenhouse of greater value in the market.