استخدام الرش العمودي في البيوت المحمية و تأثيره في بعض صفات جودة الرش على محصول الطماطة

Abstract EN

The experiment was conducted in one of the greenhouses affiliated to the Research Center of the College of Agriculture/University of Baghdad in Jadiriyah in 2022 to study the effects of the nozzel type and spray speed on some spray quality characteristics including spray density, volume median diameter and penetration rate on The tomato crop, and the experiment was conducted using a locally manufactured vertical spraying system used to spray pesticides to combat agricultural pests and diseases inside greenhouses, and it is also used to spray other types of solutions, .

In this experiment, three types of nozzels were used FLAT FAN NOZZLE AP120 and AIR-INDUCTION ANTI DRIFT NOZZLE AP031108 and DUAL SPRAY AIR-INJECTOR CERAMIC NOZZLE6MS03C2 with three spray speeds 0.684, 0.824 and 1.188 km.

h-1.

The results were analyzed by using the least significant difference (LSD) method at the 0.05 level and compared with the (Complete Randomized Design-CRD).

The results showed that the use of the nozzel type Flat fan AP12003 achieved the highest spray density by 119.50 (drop.

cm-2), while the nozzel type AP031108MS A-I.

A.

D.

N achieved the highest A penetration rate of 53.80% and the highest average droplet diameter of 1718.49 micrometer, and the results showed a significant effect when increasing the speed on the penetration rate characteristic, as the results showed that the penetration characteristic increased significantly when the speed was increased from 0.684 to 0.824 and 1.188 km.

h-1 with an average of 25.20, 32.30 and 39.40% , while the increase in speed was causing a decrease in the median volumetric diameter values.

When the speed was increased from 0.684 to 0.824 and to 1.188 km.

h-1, its values were 1520.9, 1326.23 and 1100.5 micrometer, while the speed had no effect on the density characteristic.