The Effects of Fall Urea Sprays on the Leaf Size and Nitrogen Level of Spur Leaves in Sweet Cherry (Prunus avium)

Hemin Jalil MUSTAFA, Semih ÇAĞLAR
1.712 385

Öz


ABSTRACT: The aim of this study was to determine the effects of low biuret urea applied seven days apart in mid fall on the size and N level of spur leaves in 0900 Ziraat sweet cherry cultivar. In this experiment two doses of urea were used (62.5 g and 32.5 g urea /tree) and control trees were also included as a third treatment. The size of spur and shoot leaves was positively affected by urea sprays: the spur and shoot leaf size were increased more than twice compared to those of the control trees. The N level in the spur leaves were also increased by the urea sprays. The fall low biuret urea spray to 0900 Ziraat sweet cherry trees was considered to be an efficient tool for increasing the size of spur leaves, leaading to better sized fruits.

Key Words: Plant nutrition, low biuret, nitrogen, fruit size, Prunus avium

 

Kirazda Sonbahar Üre Püskürtmesinin Spur Yaprakların Büyüklüğü ve Azot Düzeyi Üzerine Etkisi

 

ÖZET: Bu çalışmada 0900 Ziraat çeşidi kiraz ağaçlarına sonbahar ortasında yedi gün aralıkla iki kez püskürtülen düşük biüretli ürenin spur (mayıs buketi) yapraklarının büyüklüğüne ve azot içeriğine olan etkisi incelenmiştir. Denemede uygulama olarak ağaç başına 32.5 g ve 62.5 g olmak üzere iki üre dozu püskürtülmüş olup ayrıca tanık ağaçlar da yer almıştır Spur ve sürgün yapraklarının iriliği sonbahar üre uygulamasından olumlu etkilenerek tanık ağaçlarınkine gore en az iki kat daha fazla olmuştur. Üre uygulaması ilkbaharda spur yaprakların N içeriğini de arttırmıştır. Sonbaharda yapraktan düşük biüretli üre uygulamasının 0900 Ziraat çeşidi kiraz ağaçlarının spur yapraklarının iriliğinde artış sağladığı ve böylece meyvelerin de iriliğine olumlu etki sağlayabilecek etkili bir uygulama olduğu anlaşılmıştır.

Anahtar Kelimeler: Bitki besleme, düşük biüret, azot, meyve iriliği, Prunus avium


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DOI: http://dx.doi.org/10.18016/ksujns.94546

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