Developing and testing of automated sprayer for agrochemicals application trials in Iraq

Abstract

The field experiment was conducted with the aim of developing and testing an automatic sprayer for agricultural spray experiments and studying the effect of spray pressure, spray speed and spray height on the spraying process. The effects of the major spraying factors (pressure, speed, and height) on the spraying performance of the automatic sprayer were studied. This study included several traits: First - the drop sizes - Second - the penetration of the spray into the vegetation cover - Third, the spray wasted. The results showed: - First: - Increase in coverage percentage when using the first speed, 2 km / h, which amounted to 26.85%. An increment in the spraying penetration of the vegetation cover was observed at the second speed, 4 km/h, reaching 70%. Second - Pressure: The increment in pressure was accompanied by an increment in the coverage trait at the third pressure 3 bar, which amounted to 24.37%. The penetration trait was 81% at pressure of two bar, and wastage increased at the second pressure of two bar, which amounted to 25%. Spraying height: - Height) 40 & 50 cm (have no significant effect on the trait of coverage. However, it was significant in the trait of spraying penetration of the vegetation cover, as it reached at the first height (40 cm) 53% and at the second height (50 cm) 74%, and the trait of the lost at the first height, 40 cm was 13%, and at the second height, 50 cm, it reached 23%. It is concluded from the data, the extent of the effect that the spraying factors show on the studied trait, as The factors value increased is accompanied by an increment in some trait, in contrast to others. So, it becomes clear the necessity of coordinating the values of the factors with each other to obtain an equal spray.

The Effect of Power Sources in the Agricultural Tractor and the Developed Sprayer System on the Performance of the Electrical and Mechanical Sprayer System and some Performance Indicators of the Engine

“…Similarly, the discharge did not exhibit a noticeable change in the pesticide application rate. These findings are consistent with those of [19]. Based on the same table, spray nozzle size had a significant effect on weed control percentage.…”

“…Coverage is defined as the extension or area on the target surface reached and covered by pesticide droplets [17]. The aim of coverage is to achieve biological efficiency (impact on weeds ) rather than the number of droplets collected on industrial surfaces, and it plays a crucial role in pest control during the spraying process, as increased coverage enhances spray efficiency [18,19].…”