Azotlu Gübrelemenin Elmada Klorofil İçeriği Üzerine Etkileri

Bu çalışma 2009-2011 yılları arasında Yalova koşullarında yürütülmüştür. Çalışmanın amacı M9 anacı üzerine aşılı Golden Sel B elma çeşidinde, fertigasyon ve hasat sonrası yaprak gübrelemesi yöntemleri kullanılarak farklı dozlarda (0, 30, 60, 90 g/ağaç) ve farklı uygulama zamanlarında (Uygulama:1Erken ilkbaharda gözler uyanmadan önce başlayıp hasattan 40-45 gün önce biten, Uygulama:2 Erken ilkbaharda gözler uyanmadan önce başlayıp hasattan 40-45 gün önce biten ve hasat sonrası yaprak uygulaması olan, Uygulama:3 Çiçeklenme sonrası başlayıp hasattan 40-45 gün önce biten, Uygulama:4 Çiçeklenme sonrası başlayıp hasattan 40-45 gün önce biten ve hasat sonrası yaprak uygulaması olan) verilen azotun bitkilerin klorofil içeriği üzerine olan etkilerinin belirlenmesidir. Deneme, tesadüf bloklarında faktöriyel deneme desenine göre üç tekrarlamalı olarak kurulmuştur. Yapılan klorofil analiz sonuçlarına göre, yaprak klorofil içerikleri artan azot dozları ile artış göstermiş fakat farklı uygulama zamanları klorofil içerikleri üzerinde etkili olmamıştır.
Anahtar Kelimeler:

Elma, azot, gübreleme, klorofil

Effects of Nitrogen Fertilization on the Chlorophyll Content of Apple

The experiment was carried out during 2009 - 2011 period in Yalova conditions. The aim of the experiment is to determine fertigation and postharvest foliar fertilization methods with different nitrogen doses (0, 30, 60, 90 g/tree) and application times (Application:1 starts at early spring before the buds burst and ends 40-45 days ago from harvest, Application:2 In addition to A1 postharvest foliar nitrogen application, Application:3 starts after blooming and ends 40-45 days ago from harvest, Application:4 In addition to A3 postharvest foliar nitrogen application) effects on leaf chlorophyll content of Golden Sel B apple variety grafted on M9 rootstock. The experiment was designed according to randomized block factorial experiment design with three replication. According to the results increasing doses of nitrogen had increased the chlorophyll content of the leaves, however no significant differences was observed due to the different nitrogen application times on the chlorophyll content.

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