The effect of potassium doses applied in different periods of growth on yield and yield components at cotton (Gossypium hirsutum L.)

Year 2023, Volume: 27 Issue: 4, 545 - 560, 27.12.2023

Ahmet Yılmaz , Ömer Hacıkamiloğlu

https://doi.org/10.29050/harranziraat.1345084

Abstract

This study was carried out in Şanlıurfa ecological conditions, in order to determine the effect of potassium (KCl) doses after planting time, on yield and yield components in 2020 and 2021. In the experiment, Fiona cotton variety was used as plant material. The experiment design was planned in randomized blocks according to the split plot experimental design, with 3 replications. potassium applications time were applied 30th, 40th and 50th days after sowing to the main plots, and potassium (KCl) doses of 0 kg/da, 10, 20 and 30 kg/da were applied to sub-plots. According to the results obtained from the research, the seed cotton yields varied between 396 kg/da and 520 kg/da. The highest seed cotton yield (520 kg/da) was obtained from the 50th day after sowing x 30 kg/da KCl interaction. Plant height values are 85.41 cm and 77.95 cm in 2020, 87.63 cm and 81.13 cm in 2021; boll weight values are between 6.49 g and 5.97 g in 2020, between 6.97 g and 5.92 g in 2021; In 2021, 6.97 g was obtained from the 50th day x 30 kg/da KCl application after sowing. The number of sympodial branches was observed between 9.02 and 11.3 units per/plant in 2020 and between 7.78 and 10.44 units per plant in 2021. From the study, it was concluded that the application of potassium fertilizers in cotton farming in the region can be recommended.

Keywords

Cotton (Gossypium hirsutum L.), Potassium, application time and doses, Yield and Yield Components

Farklı gelişme dönemlerinde uygulanan potasyum dozlarının pamukta (Gossypium hirsutum L.) verim ve verim ögelerine etkisi

Abstract

Bu çalışma; Pamuğa potasyum klorür (KCl) uygulama zamanı ve dozlarının, verim ve verim ögelerine etkisini belirlemek amacıyla, 2020 ve 2021 yıllarında Şanlıurfa ekolojik koşullarında planlanmış ve yürütülmüştür. Denemede, Fiona pamuk çeşidi bitki materyalini oluşturmuştur. Deneme, tesadüf bloklarında bölünmüş parseller deney desenine göre 3 tekrarlamalı olarak, her parsel 6 sıradan, oluşturulmuştur. Denemede ekimden sonra 30., 40. ve 50. Gün potasyum uygulamaları ana parsellere, 0 kg/da 10, 20 ve 30 kg/da potasyum klorür (KCl) dozları ise; alt parsellere uygulanmıştır. Araştırmadan elde edilen sonuçlara göre kütlü pamuk verimleri 396 kg/da ile 520 kg/da arasında değişmiştir. En yüksek kütlü pamuk verimi (520 kg/da) ekimden sonraki 50. Gün x 30 kg/da KCl interaksiyonundan elde edilmiştir. Bitki boyu değerleri 2020 yılında 85.41 cm ile 77.95 cm, 2021 yılında 87.63 cm ile 81.13 cm; koza ağırlığı değerleri 2020 yılında 6.49 g ile 5.97 g, 2021 yılında 6.97 g ile 5.92 g arasında; 2021 yılında 6.97 g ile ekimden sonraki 50. gün x 30 kg/da KCl uygulamasından elde edilmiştir. Meyve dalı sayısı değerleri 2020 yılında 9.02 ile 11.3 adet/bitki ve 2021 yılında 7.78 ile 10.44 adet/bitki sayısı arasında gözlemlenmiştir. Koza sayısı 2020 yılında 16.24 ile 13.69 adet, 2021 yılında ise 15.75 ile 10.15 adet arasında olup en yüksek koza sayısı 40.gün x 20 kg/da uygulamasında tespit edilmiştir. Önceki çalışmalarda bölge topraklarının potasyum içeriği bakımından yeterli olduğu ifade edilse de toprakta bulunan potasyumun bir kısmının bağlı halde olduğu ve pamuk bitkilerinin bundan yeterince yararlanamadığı, bu nedenle Bölge tarımında potasyumlu gübreler önerilebilir.

Keywords

Pamuk (Gossypium hirsutum L.), Potasyum uygulama zamanı ve dozları, Verim ve Verim Unsurları

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