Todo DSpace

Listar por autor "Fountas, S."

Mostrando ítems 21-35 de 35

    • Precision agriculture applications in horticultural crops in greece and worldwide 

      Gemtos, T. A.; Fountas, S.; Aggelopoulou, K. (2011)
      Precision agriculture is the management of spatial and temporal variability of the fields using ICT. The application in horticultural crops was developed in the last ten years. Data are collected from different sources ...

    • The role of communication and co-operation in the adoption of precision farming 

      Kutter, T.; Tiemann, S.; Siebert, R.; Fountas, S. (2011)
      Research on Precision Farming (PF) relates the adoption of PF primarily to economic incentives as well as farm attributes, whereas social factors are commonly ignored. Therefore, the present study analyses the importance ...

    • Site-specific management in an olive tree plantation 

      Fountas, S.; Aggelopoulou, K.; Bouloulis, C.; Nanos, G. D.; Wulfsohn, D.; Gemtos, T. A.; Paraskevopoulos, A.; Galanis, M. (2011)
      Yield and soil mapping were carried out in 2007 and 2008 in a 9.1 ha commercial olive tree plantation for olive oil production. The orchard is in the southern Peloponnese, where olives are cultivated extensively for extra ...

    • Soil spatial variability and site-specific fertilization maps in an apple orchard 

      Aggelopoulou, K. D.; Pateras, D.; Fountas, S.; Gemtos, T. A.; Nanos, G. D. (2011)
      In the present study, the spatial variability of some soil physical and chemical properties in a 0.8 ha apple orchard were studied. Sixty soil samples were taken from two sampling depths: 0-0.3 m and 0.3-0.6 m. The soil ...

    • Soil spatial variability in small Greek apple orchards 

      Aggelopoulou, K. D.; Pateras, D.; Fountas, S.; Gemtos, T. A.; Nanos, G. D. (2007)
      In the present study, the spatial variability of some soil physical and chemical properties in a 0.8 ha apple orchard were studied. Sixty soil samples were taken to a depth of 30 cm and analyzed for the following soil ...

    • Spatial variation in yield and quality in a small apple orchard 

      Aggelopoulou, K. D.; Wulfsohn, D.; Fountas, S.; Gemtos, T. A.; Nanos, G. D.; Blackmore, S. (2010)
      We describe the yield and quality of apples from a 0.8 ha apple orchard located in northern Greece over two growing seasons and consider the potential for site-specific management. The orchard has two apple cultivars: Red ...

    • A specification for an autonomous crop production mechanization system 

      Blackmore, B. S.; Fountas, S.; Gemtos, T. A.; Griepentrog, H. W. (2009)
      This paper describes the specification of requirements and the functionality, of a novel agricultural mechanisation system based on small smart machines. It separates the current mechanisation methods from the original ...

    • A systems analysis of information system requirements for an experimental farm 

      Fountas, S.; Kyhn, M.; Jakobsen, H. L.; Wulfsohn, D.; Blackmore, S.; Griepentrog, H. W. (2009)
      A systems analysis and design of information requirements for an experimental farm is presented. This study was carried out on the university farm (UF) at the University of Copenhagen in Denmark. The UF has several farm ...

    • Towards automated compliance checking based on a formal representation of agricultural production standards 

      Nash, E.; Wiebensohn, J.; Nikkila, R.; Vatsanidou, A.; Fountas, S.; Bill, R. (2011)
      Production standards in the form of legal regulations or quality assurance labels are playing an increasingly important role in farming. Each farm must therefore gather information on all standards which apply, which may ...

    • Transplanting Machine Operation Analysis 

      Natsis, A.; Fountas, S.; Gemtos, T. (2011)
      Transplanting has been used for most vegetables and ornamental plants to achieve better establishment and early maturing of the crops. Manual transplanting is slow and labour intensive. Semiautomatic transplanters are a ...

    • The use of a laser scanner for measuring crop properties in three different crops in Central Greece 

      Chatzinikos, A.; Gemtos, T. A.; Fountas, S. (2013)
      A sensing platform using a laser scanner was developed for data collection for the crop in the field. Crop height and biomass from three crops (sunflower, soybeans and winter wheat) were estimated. The sensing platform was ...

    • Using laser scanner to map pruning wood in vineyards 

      Tagarakis, A.; Liakos, V.; Chatzinikos, T.; Koundouras, S.; Fountas, S.; Gemtos, T. (2013)
      Management zones in vineyards may be delineated by examining the spatial variability of various biophysical factors related to grapevine performance, such as vegetation indices. Among measurements of vine vigour, the ...

    • Wireless sensor network for precision agriculture 

      Tagarakis, A.; Liakos, V.; Perlepes, L.; Fountas, S.; Gemtos, T. (2011)
      Sensors are very useful in agriculture. Irregular or insufficient rainfall can be a serious limitation to the final yield, causing low yields and even crop failure. Moreover the total amount of water cannot be assessed ...

    • Yield prediction in apple orchards based on image processing 

      Aggelopoulou, A. D.; Bochtis, D.; Fountas, S.; Swain, K. C.; Gemtos, T. A.; Nanos, G. D. (2011)
      It has been suggested that apple ( Malus * domestica Borkh) flowering distribution maps can be used for site-specific management decisions. The objectives of this study were (i) to study the flower density variability in ...

    • Yyield prediction in a commercial apple orchard by analyzing RGB and multi-spectral images of trees during flowering period 

      Liakos, V.; Tagarakis, A.; Aggelopoulou, K.; Kleftaki, X.; Mparas, G.; Fountas, S.; Gemtos, T. (2011)
      The objective of the research was to study the spatial variability in an apple orchard and to develop methods for predicting the variation of the final yield. RGB and multi-spectral images of part of the trees were taken ...