Tutto DSpace

Sfoglia per Autore "Liakos, V."

Items 1-8 di 8

    • Application of variable rate fertilizer in a commercial apple orchard 

      Liakos, V.; Tagarakis, A.; Vatsanidou, A.; Fountas, S.; Nanos, G.; Gemtos, T. (2013)
      The spatial variability of yield in an apple orchard is high due to the inherent soil variability and the impact of the environment on the trees. One practice of precision agriculture is the variable rate application (VRA) ...

    • Farm machinery management information system 

      Fountas, S.; Sorensen, C. G.; Tsiropoulos, Z.; Cavalaris, C.; Liakos, V.; Gemtos, T. (2015)
      Management of farming operations is currently rapidly changing toward a systems perspective integrating the surroundings in terms of environmental impact, public entities and documentation of quality and growing conditions. ...

    • Management zones delineation using fuzzy clustering techniques in grapevines 

      Tagarakis, A.; Liakos, V.; Fountas, S.; Koundouras, S.; Gemtos, T. A. (2013)
      Precision viticulture aims at managing vineyards at a sub-field scale according to the real needs of each part of the field. The current study focused on delineating management zones using fuzzy clustering techniques and ...

    • Management zones delineation using fuzzy clustering techniques in vines 

      Tagarakis, A.; Liakos, V.; Fountas, S.; Koundouras, S.; Aggelopoulou, K.; Gemtos, T. (2011)
      This paper presents the results of applying precision agriculture in a 1 ha commercial vineyard in Greece in 2009 and 2010. A field elevation map was produced using RTK-GPS. Soil electrical conductivity was measured using ...

    • 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 ...

    • Variable rate application of side-dress nitrogen on cotton in Georgia, USA 

      Liakos, V.; Vellidis, G.; Harris, G.; Hill, R.; Henry, H. (2013)
      Uniform application of fertilizers is inefficient as it does not consider field variability. During the last decade, variable rate application (VRA) has become increasingly popular. The goal of this study was to asses VRA ...

    • 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 ...

    • 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 ...