Vol. 16 No. 3 (2010)
Articles

Irrigation modeling in a pear orchard

Published May 10, 2010
A. Nagy
University of Debrecen, Centre of Agricultural Sciences and Engineering, Faculty of Agronomy, Department of Water and Environmental Management, H-4032 Debrecen, Böszörményi 138, Hungary
Tamás J.
University of Debrecen, Centre of Agricultural Sciences and Engineering, Faculty of Agronomy, Department of Water and Environmental Management, H-4032 Debrecen, Böszörményi 138, Hungary
Fórián T.
University of Debrecen, Centre of Agricultural Sciences and Engineering, Faculty of Agronomy, Department of Water and Environmental Management, H-4032 Debrecen, Böszörményi 138, Hungary
Nyéki J.
University of Debrecen, Centre of Agricultural Sciences and Engineering, Institute for Research and Development
Soltész M.
University of Debrecen, Centre of Agricultural Sciences and Engineering, Institute for Research and Development
Szabó Z.
University of Debrecen, Centre of Agricultural Sciences and Engineering, Institute for Research and Development
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APA

Nagy, A., J., T., T., F., J., N., M., S., & Z., S. (2010). Irrigation modeling in a pear orchard. International Journal of Horticultural Science, 16(3), 75-79. https://doi.org/10.31421/IJHS/16/3/900

The pear has large water requirement, therefore the planting of high density and grass covered pear orchards are needed irrigation
conditions in Hungary. Drip irrigation spread in the orchards is due to the 90–95% of water use efficiency. One of the key role of irrigation is the
proper determination of evapotranspiration and crop coefficients. As there is a considerable lack of information for different crops or fruits the
Penman-Monteith method is used for the estimation of evapotranspiration, using CROPWAT 8.0. The research field was the genetic collection of
pear at Újfehértó, in Hungary, which is situated in Nyírség meso-region. Our aim was to establish drip irrigation at this site. Based on the results
of CROPWAT irrigation model the mean amount of the total gross irrigation is between 230–270 mm, within 3 irrigation interval regarding
climatic and rainfall data of the last 10 years. In 2009, due to heavy drought, the total gross irrigation was 355,4mm/year on sandy soil calculating
with 45% total available water depletion in 5 irrigation interval. The sizing of the irrigation system was set to the maximum 0.55 l/s/ha, which is
6.3 l/tree/h. 6.3 l/tree/h can be carried out with a drip emitter having 16 mm wing lines diameter, 4 l/h water flow at 3 atm pressure.

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