Energy consumption in the open field and in greenhouse tomato production | Potrosnja energije u proizvodnji paradajza na otovrenom [i.e. otvorenom] i u objektima zasticenog prostora razlicite konstrukcije
2010
Djevic, M., Poljoprivredni fakultet, Beograd - Zemun (Serbia) | Dimitrijevic, A., Poljoprivredni fakultet, Beograd - Zemun (Serbia) | Mileusnic, Z., Poljoprivredni fakultet, Beograd - Zemun (Serbia) | Miodragovic, R., Poljoprivredni fakultet, Beograd - Zemun (Serbia)
The aim of this study is to analyze energy patterns in open and greenhouse tomato production, since tomato is very important vegetable in human nutrition with tendency to be used whole year. The greenhouses used were one tunnel structure, covered with double PE folia, 5x20 m and one gutter-connected double PE covered structure 21 m wide and 250 m long. The results obtained lead to the conclusion that lower specific energy per production surface can be expected in conditions of the open field and that, regarding the greenhouses lower value for energy consumption can be expected in case of multi-span greenhouses. The results show that there are differences in yield as well as in energy consumption between the open and the greenhouse tomato production. Based on the energy consumption and the energy output it can be seen that the tomato production in the open field is less energy demanding compared to the tomato production in the greenhouses. The structure of energy inputs shows that 80% up to 90% of the total energy consumption is based on indirect energy inputs, mostly fertilizers, human labour, and water for irrigation. Results also show that energy consumption must be analyzed together with the energy output. Greenhouse structure had better ratio between yield and energy consumption to the open field production system. This had also led to the higher energy productivity in the greenhouse tomato production systems.
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