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Damla Sulama Yöntemiyle Sulanan Şanlıurfa Biberinin (Capsicum annum L.) Sulama Programı
(Scheduling Şanlıurfa Pepper (Capsicum annum L.) Irrigation with Drip Irrigation )

Author : İsmail TAŞ  Halil KIRNAK  
Type :
Printing Year : 2011
Number : 2011-1
Page : 103-112


Summary
Tarımsal üretimimde gerek verimde artışın sağlanmasında gerekse bitki deseninin çeşitlendirilmesinde sulama en önemli girdilerden bir tanesidir. Bitkinin gereksinim duyduğu su, çevre sorunu yaratmadan ihtiyaç duyulduğu zamanda ve miktarda karşılanmalıdır. Çalışma, Harran Ovası koşullarında yaygın olarak yetiştiriciliği yapılan biber bitkisinin (Capsicum annum L.) sulama programının belirlenmesi amacıyla, Harran Üniversitesi Ziraat Fakültesi deneme alanında yürütülmüştür. Araştırmada üç farklı sulama aralığı (2, 4 ve 6 gün) ile üç farklı bitki pan katsayısı (Kcp1=1.25, Kcp2=1.00 ve Kcp3=0.75) dikkate alınmıştır. Uygulanacak sulama suyu miktarının belirlenmesinde açık su yüzeyi buharlaşması, bitki örtü yüzdesi ile düzeltilerek hesaplanmıştır. Deneme konularına uygulanan sulama suyu miktarları 652-1010 mm, mevsimlik su tüketimleri ise 726-1069 mm arasında değişmiştir. Konulardan elde edilen verim değerleri 2444 - 4703 kg/da arasında gerçekleşmiştir. Ayrıca toplam su kullanım randımanı (WUE) 2.75-5.22 kg/da/mm, sulama suyu kullanım randımanı (IWUE) 3.03-5.81 kg/da/mm ve sulama suyunun evapotranspirasyonu karşılama yüzdesi (I/ET) %85-96 arasında değişim gösterdiği saptanmıştır. Çalışma sonunda, Harran Ovası koşullarında biber bitkisinin damla sulama yöntemiyle sulanması durumunda, sulama aralığı olarak 2 gün, bitki katsayısı olarak 1.25’in seçilmesinin yanında sulama suyu miktarının hesaplanmasında bitki örtü yüzdesi değeri ile düzeltilmesinin uygun olacağı belirlenmiştir.

Turkish Keywords
Damla sulama, sulama programı, su tüketimi, biber

Abstract
Irrigation is one of the most significant input in agricultural production to provide yield increase and various cropping patters. Plant water requirements should be met at desired periods with desired amounts without causing any environmental problems. This study was carried out over the experimental fields Harran University Agricultural Faculty to determine the proper drip irrigation scheduling for Şanlıurfa pepper (Capsicum annum L.). Three different irrigation intervals (2,4 and 6 days) and three different plant pan coefficients ((Kcp1=1.25, Kcp2=1.00 and Kcp3=0.75) were taken into consideration in this study. Amount of irrigation water to be applied was calculated by using free-water surface evaporation values corrected with plant cover ratios. Amount of applied irrigation water varied between 652-1010 mm and seasonal water consumption varied between 726-1069 mm. Yields from treatments were between 2444 – 4703 kg/da. Total water use efficiency (WUE) was 2.75-5.22 kg/da/mm, irrigation water use efficiency (IWUE) was 3.03-5.81 kg/da/mm, ration of irrigation water to evapotranspiration (I/ET) was between 85-96%. It was concluded in this study under Harran Plain conditions that irrigation interval for pepper should be selected as 2 days, plant coefficient should be prefered as 1.25 and amount of irrigation water should be calculated with a plant cover ratio correction.

Keywords
Drip irrigation, scheduling, evapotranspiration, pepper

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