Tekirdağ yöresinde yap ı lan bu çal ış mada, m ı s ı r bitkisinin su tüketimi ölçülmü ştür. Sulamalara 90 cm'lik kök derinliğindeki kullan ı labilir su tutma kapasitesinin %65'i tüketildi ğ inde başlanm ışt ı r. Su tüketimi ölçmeleri, toprak nemi azalmas ı n ı n denetimi yoluyla on günlük periyotlar için yap ı lm ışt ı r. Bu değerler, bitki su tüketimi tahminierinde kullan ı lan BlaneyCriddle B-C , Penman-Monteith P-M , Penman yönteminin FAO modifikasyonu P-FAO , Jensen-Haise J-H , Kap buharlaşmas ı yönteminin FAO A-FAO ve Christiansen-Hargreaves A-CH modifikasyonlar ı ile hesaplanan potansiyel bitki su tüketimi değerleri ile karşı laşt ı r ı lm ışt ı r. Sonuçta, deneme koşulları için en yak ı n tahminin Jensen-Haise yöntemi J-H ile elde edilebileceği saptanm ış ve bu yönteme ili şkin k,.; bitki katsay ı s ı eğrisi haz ı rlanm ışt ı r.
This study was conducted to measure evapotranspiration of maize in Tekirda ğ conditions. Irrigation water was applied at soil water depletion fraction of 0.65 in the root depth of 90 cm. Evapotranspiration values were obtained by measuring changes in soil water content for 10 day periods during the whole growing season. These data were compared with the Et values calculated by the methods of Blaney-Criddle B-C , Penman-Monteith P-M , FAO modification of Penman PFAO , Jensen-Haise J-H , FAO modification of Class A Pan Evaporation A-FAO and Christiansen-Hargreaves modif ı cation of Class A Pan Evaporation A-CH . By this way, the most suitable estimation method of evapotranspiration which could be used for irrigation scheduling of maize was tried to determine. As a result, it has been found that the most suitable estimation method is Jensen-Haise method J-H . In addition, the crop coefficient kc curve has been prepared for this method.
Primary Language | Turkish |
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Subjects | Engineering |
Journal Section | Research Article |
Authors | |
Publication Date | May 1, 1997 |
Submission Date | May 1, 1997 |
Published in Issue | Year 1997 Volume: 03 Issue: 02 |
Journal of Agricultural Sciences is published open access journal. All articles are published under the terms of the Creative Commons Attribution License (CC BY).