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Yarı Kurak ve Su Stresssinin Olmadığı Koşullar Altında Patlıcan Bitkisinin Su ve Radyasyon Kullanım Etkinliği

Bu çalışmada; patlıcan bitkisinde, bitki yüzeyine gelen solar radyasyon, fotosentezde kullanılan aktif radyasyon (IPAR), su kullanım etkinliği (WUE), toplam kuru madde (TDM) için radyasyon kullanım etkinliği (RUE) ve bitki su tüketim değerleri belirlenmiştir. Arazi koşullarında yetiştirilen patlıcan‟da bitki gelişimi ve verim arasındaki ilişki belirlenmeye çalışılmıştır. Tüm gelişim dönemi süresince patlıcanın (Solanum melongena L. cv) su ihtiyacı A sınıfı buharlaşma kabı yöntemine göre belirlenmiştir. Bitki gelişim dönemi olan 113 günlük periyot içerisinde bitkinin gerçekleştirdiği fotosentezde kullanılan aktif radyasyon miktarı 1120 MJ m-2 olmuştur, bu periyot içerisinde gelen solar radyasyonunun 393 MJ m-2 kısmı bitki tarafından tutulmuş ve uygulanan 509 mm sulama suyu ve 612,9 mm bitki su tüketimine karşılık 41,5 ton ha-1 verim elde edilmiştir. Bu çalışma sonucunda, A–sınıfı buharlaşma kabından meydana gelen buharlaşma, solar radyasyon ve ortalama sıcaklık arasında güçlü bir ilişki olduğu ve bu ilişkiden yararlanarak özellikle otomatik sulama sistemlerinin aktive edilebileceği düşünülmektedir

Anahtar Kelimeler:

Patlıcan, PAR, RUE, Solar radyasyon, Sulama, A-sınıfı buharlaşma kabı

Water and Radiation Use Efficiency of Eggplant Under None Water Stress Condition in Semi–Arid Region

An experiment was conducted in an open field to determine the simultaneous relationship between radiation interception, evapotranspiration, plant development and yield. Full water demand of eggplant (Solanum melongena L. cv) was met througout the entire growing season by using Class–A pan in 2014. This study assessed the intercepted photosynthetically active radiation (IPAR), water use efficiency (WUE), radiation use efficiency (RUE) and total dry matter (TDM) of Eggplant (Solanum melongena L.) in each stages throuhout the all growing period. The incident PAR was 1120 MJ m-2, of which 393 Mj m-2 intercepted by the eggplant canopy. The yield was 41.5 t ha-1, with the applied water of 509 mm and evapotranspiration of 612.9 mm for the entire growing season, lasting 113 days. In this experiment, a strong relationship was determined between solar radiation and evaporation occuring from Class–A pan. Therefore, it is thought to be used in the activatation of micro irrigation systems automatically

Keywords:

Eggplant, PAR, RUE, Solar radiation, Irrigation, Class-A pan,

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