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Sıralı Değişken Oranlı Gübre Makinelerinin Geliştirilmesi ve Performansı
(Development of a Row Type Variable Rate Fertilizer Machine and its Performance )

Author : Ufuk TÜRKER  Babak TALEPBOUR, Mehmet Metin ÖZGÜVEN  
Type :
Printing Year : 2019
Number : 2019-1
Page : 36-44


Summary
Artan karlılık ve çevre kirliliğinin azaltılması, değişken oranlı uygulamayı kaçınılmaz kılmaktadır. Bu nedenle, tarla gereksinimine göre gübreleme ve hareket halindeyken gübre oranlarını değiştirme kabiliyeti sahaya özel araçlarından biri olarak kabul edilmektedir. Değişken oranlı makineler daha karmaşık yapıda olduklarından çiftçiler, ekstra bileşenlerin ve sistemlerin ne kadar güvenilir olduğunu ve getirdiği ek maliyet ve zorlukları göz önünde bulundurmalıdır. Bu çalışma, sıraya gübre atma makinesine modifiye edilmiş değişken oranlı bir granül gübre sistemini ve performansını tanıtmaktadır. Gübre atma makinasının performansını değerlendirmek için, enterpolasyon doğruluğu ve güvenilir değişken oranlı bir gübreleme sistemi elde etmek için parametreler olarak, gübre değişkenlik katsayısı ve tepki süresi, dikkate alınmıştır. Sonuçlara göre, enterpolasyon doğruluğu 0,94 (R2) olarak belirlenmiştir. Tepki süreleri, en düşük gübre miktarından en yüksek miktara ve en yüksekden en düşük miktara geçiş oranları 1ms-1 ilerleme hızında sırasıyla 4.44 ve 4.63s olarak hesaplanmıştır. Gübre oranlarındaki değişim katsayısı, % 6,44 ile% 26,25 ve 10,45 ile 81,3 arasında değişmiştir. Değişken gübre atma ünitesinin gübre oranı değişkenlik katsayısının (CV) değişimi, sırasıyla geçiş sırasındaki artan ve azalan değerlerde sırasıyla % 10,11 ila 36,15 ve % 11,15 arasında 117,89 gerçekleşmiştir.

Turkish Keywords
değişken oranlı uygulama, kontrol sistemi, enterpolasyon, tepki süresi

Abstract
Increasing profitability associated with reduction of environmental pollution and production costs made variable rate application unavoidable. Therefore, fertilizing according to the field demand and ability to vary fertilizer rates on-the-go is regarded as one of the site-specific management tools. Variable rate application machines tend to be more complicated and thus farmers must take into account how reliable the extra components and systems. This study introduces a frugal variable rate granular fertilizer with features of and simplicity that was modified on a row fertilizer machine. Interpolation accuracy, coefficient of variation and response time as parameters to achieve a reliable variable rate fertilizing system were considered in order to evaluate the fertilizer applicator performance. According to the results, when interpolation accuracy was determined as 0.94 (R2), the response times of low to high and high to low transition rate orders were estimated as 4.44s and 4.63s taking into account operation speed at 1 ms-1, respectively. Coefficient of variation of fertilizer rates ranged from 6.44 to 26.25% and 10.45 to 81.3 for application rate from 0 to 150 kg/ha. Variation of fertilizer rate among the metering units in terms of coefficient of variation (CV) resulted from 10.11 to 36.15% and 11.15 to 117.89% in increasing and decreasing transition order, respectively.

Keywords
variable rate fertilizer application, control system, interpolation, response time.

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