İkinci Ürün Pamukta (Gossypium hirsutum L.) Verim ve Kalite Özelliklerine Harpin Proteini ve Potasyum Tiyosülfat Yaprak Uygulamasının Etkinliği Üzerine Bir Ön Çalışma

Özellikle olumsuz toprak koşullarında yetiştirilen pamuklarda harpin protein ve potasyum tiyosülfat gibi yaprak uygulamaları önemli bir role sahiptir. Bu çalışmada harpin protein ve potasyum tiyosülfat’ın farklı kombinasyonlarının ikinci ürün pamukta verim, verim komponentleri ve lif kalitesi yönünden değerlendirilmesi amaçlanmıştır. Taraklanma doruğunda ve çiçeklenme başlangıcında + 21 gün sonra olmak üzere harpin proteini uygulamasının birinci el kütlü oranını artırdığı saptanmıştır. En yüksek kütlü pamuk verimi 423.16 kg da-1 ile çiçeklenme doruğunda harpin proteini uygulanan parsellerden elde edilirken harpin proteini ve KTS uygulamalarının lifleri kabalaştırdığı belirlenmiştir. Kütlü pamuk verimini artırmak için harpin proteini ve KTS uygulamalarının olumlu bir etkiye sahip olduğu sonucuna varılmıştır.

Anahtar Kelimeler:

Harpin proteini, lif kalitesi, potasyum tiyosülfat, verim, yaprak gübrelemesi

A Preliminary Study on the Effectiveness of Harpin Protein and Potassium Thiosulphate Foliar Applications on Yield and Quality Characteristics in Second Crop Cotton (Gossypium hirsutum L.)

The foliar applications such as harpin protein and potassium thiosulfate (KTS) play a crucial role in cotton growing under especially adversely soil conditions. This study was conducted to evaluate the different combinations of harpin protein and KTS for yield, yield components and fiber quality in second crop cotton (Gossypium hirsutum L.). The differences among treatments were significant for first picking percentage, seed cotton yield and fiber fineness. The applications of harpin protein at peak squaring and harpin protein at first flowering + after 21 days harpin protein were induced the earliness of cotton. The highest seed cotton yield was recorded in harpin protein at peak squaring with 4231.6 kg ha-1, whereas the fibers became coarser with the harpin protein and KTS applications. Results obtained from the current study indicated the potential effect of harpin protein and KTS on increasing the seed cotton yield.

Keywords:

Fiber quality, foliar spray, harpin protein, potassium thiosulfate, seed cotton yield,

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