Journals / Iğdır Üniversitesi Fen Bilimleri Enstitüsü Dergisi / 2011 / Cilt: 1 - Sayı: 1
Drop Transportation Efficiency of Different Types of Spray Nozzles into Potato Canopies
- Pages
- 81–90
- DOI
- —
Abstract
In this study, drop transportation efficiency of standard flat fan, hollow cone, air induction and twinjet hydraulic nozzles (4 bar operational pressure), and spinning disc nozzle (1.5 bar operational pressure, 4500min-1 disc speed) and air-assisted spray head (1.5 bar operational pressure, 3500 min-1 fan speed, 20-25 m s-1 airspeed) were compared. Trials were conducted on concrete floor and in the field conditions on potato canopies. Inthe trials conducted on concrete floor, positive and a significant correlation (Pearson correlation coefficient r=0.689,p<0.000) was found between application rate ( l ha-1) and spray coverage (%) and, spray coverage varied very significantlyaccording to droplet diameter (DV.50). In the trials conducted on concrete floor, transportation efficiencyof applied liquid volume with air induction and twin jet hydraulic nozzles were changed between 80% and 99.5%.These ratios were determined between 66% and 78% for flat fan and hollow cone nozzles, 44% and 51% for spinningdisc nozzle, 63% and 64% for air assisted spray head. At the top of potato plant, the highest transportationefficiency of drops reaching the upper side of the leaves were determined with air induction (50%) and twin jet(%48) hydraulic nozzles. Air-assisted spray head had the lowest transportation efficiency (23%) than other spraynozzles. At the top of the plant, the highest transportation efficiency under side of the leaves was found at air assistedspray head (14%).
Özet
Bu çalışmada; standart yelpaze hüzmeli, konik hüzmeli, hava emişli ve çift akışlı hidrolik memelerin (işletme basıncı 4 bar), döner diskli memenin (işletme basıncı 1.5 bar, disk devri 4500 min-1) ve yardımcı hava akımlı püskürtme başlığının (işletme basıncı 1.5 bar, fan devri 3500 min-1, hava hızı 20-25 m s-1) damla taşınma etkinlikleri karşılaştırılmıştır. Denemeler, beton zeminde ve tarla koşullarında patates bitkisinde yürütülmüştür. Beton zeminde yürütülen denemelerde uygulama hacmi (l ha-1) ve yüzey kaplama oranı arasında pozitif yönde ve anlamlı bir korelasyon (Pearson korelasyon katsayısı r=0.689, p