Nurdan Tuna GÜNEŞ, Yeşim OKAY, A. İlhami KÖKSAL, Mehmet KÖROĞLU

Antepfıstığında azotlu ve fosforlu gübrelemenin verim, bazı meyve özellikleri, hormon konsantrasyonları ve periyodiste üzerine etkisi

Bu çalışma, P. vera üzerine aşılı ‘Kırmızı’ Antepfıstığı (Pistacia vera L.) çeşidinde azotlu ve fosforlu gübrelemenin verim, bazı meyve özellikleri, hormon konsantrasyonları, periyodisite üzerine etkilerini belirlemek amacıyla 3 yıl boyunca yürütülmüştür. Azot 0 (Kontrol), 800, 1000 ve 1200 g ağaç-1 oranlarında ve fosfor ise 0 (Kontrol), 200, 400 ve 600 g ağaç-1oranlarında toprağa uygulanmıştır. Çalışma sonunda, özellikle periyodisite yılı olan 2. yılda, verim önemli ölçüde düşmüş, meyve ağırlığı artış göstermiş olmasına rağmen, gübre oranları arasındaki interaksiyonlar, sadece meyve ağırlığı, oksin, gibberellin ve zeatin konsantrasyonları için önemli bulunmuştur (P ≤ 0.05). Muhtemelen bu türün bitkisel özellikleri nedeniyle topraktan uygulanan gübrelerin çalışmada incelenen bütün parametreler üzerine sabit ve düzenli bir etkisi, gözlenmemiştir. Bu nedenle Antepfıstığında gübreler ve gübre oranlarının etkilerini belirlemek amacıyla daha uzun süreli uygulama periyotları içeren çalışmalara gereksinim duyulmaktadır.

Anahtar Kelimeler:

Periyodisite, gübreleme, GA3, IAA, meyve ağırlığı, Pistacia vera L.

The effect of nitrogen and phosphorus fertilization on yield, some fruit characteristics, hormone concentrations, and alternate bearing in pistachio

This research was carried out in order to determine the effects of nitrogen and phosphorus fertilization on yield, some fruit characteristics, hormone concentrations, and alternate bearing in pistachio (Pistacia vera L.) cv. 'Kırmızı' grafted on P. vera over 3 consecutive years. Nitrogen was applied at the rate of 0 (control), 800, 1000, and 1200 g tree-1, and phosphorus was applied at the rate of 0 (control), 200, 400, and 600 g tree-1 into the soil. As a result, although yield mostly decreased and nut weight increased, especially in the 2nd year ('off' year), considerable interactions among fertilizer rates were determined for only nut weight, auxin, gibberellic acid, and zeatin concentrations (P

Keywords:

fertilization, GA3, IAA, nut weight, Pistacia vera L., Alternate bearing,

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