Now showing items 1-10 of 10

  • 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) ...
  • Energy analysis of three energy crops in Greece 

    Gemtos, T. A.; Cavalaris, C.; Karamoutis, C.; Tagarakis, A.; Fountas, S. (2013)
    To assess the potential of energy crops to provide a stock material for biofuel production three crops (rapeseed, sunflower and sweet sorghum) were studied in field experiments in Thessaly, Central Greece in 2007 and 2008. ...
  • A five-point penetrometer with GPS for measuring soil compaction variability 

    Fountas, S.; Paraforos, D.; Cavalaris, C.; Karamoutis, C.; Gemtos, T. A.; Abu-Khalaf, N.; Tagarakis, A. (2013)
    Measuring soil compaction is a factor of interest to monitor soil fertility, which plays an important role in crop production cycle. Soil penetration resistance is the most commonly used method to measure soil compaction. ...
  • A fuzzy inference system to model grape quality in vineyards 

    Tagarakis, A.; Koundouras, S.; Papageorgiou, E. I.; Dikopoulou, Z.; Fountas, S.; Gemtos, T. A. (2014)
    Fuzzy inference systems (FIS) are particularly suited for aggregating multiple data to feed multi-variables decision support systems. Moreover, grape quality is a complex concept that refers to the simultaneous achievement ...
  • Investigation of Spatial Variability of Air Temperature, Humidity and Velocity in Cold Stores by Using Management Zone Analysis 

    Akdemir, S.; Tagarakis, A. (2014)
    The main objective of this research was to determine spatial variability of ambient temperature, relative humidity and air velocity in a cold storage using management zone analysis methods. Ambient temperature, relative ...
  • 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 ...
  • 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 ...