The aesthetic value of ornamental plants requires a near - zero tolerance for louse pest , which cause up to 10 % of craw loss per time of year . Controlling them with insecticide is a difficult proposition :
Key pestilence such as thrips , aphids , and whiteflies lean to feed on the bottom of leaf – a notoriously unmanageable surface to target because of its orientation relative to the spray nose . Other pests , such as mealybug , are found on fore . Stems are hard - to - wet works surfaces because spray tends to run off . Further , as the plant canopy grow and densifies , these surfaces are entomb deep at bottom , out of the line of sight . Finally , the insect powder available for closed surroundings spraying must be compatible with biologic controls and are , therefore “ gentle ” chemistries . Examples let in scoop , oils , and entomopathogenic fungi . These products require contact with the plague and are at skilful translaminar , so coverage becomes vital for performance .
spray for insectsThe planting architectures and canopy morphologies are highly variable in decorative greenhouses . Perhaps they are young plants with sparse canopies , densely compact in pots on raise board . Perhaps they are mature , advert plants with obtuse canopy . Perhaps they are something in between .
Crop canopy sound structure and planting computer architecture are highly variable from operation to operation . Ideally , each compounding of canopy geomorphology , institute architecture , cuss , and chemistry would have a specific sprayer designed to optimise reporting and efficiency . This is economically unrealistic . rather , many producer utilize engineering that rely on gamey water volumes and hydraulic atmospheric pressure to “ swamp ” target area at random . Others utilise highly manual methods that give up the operator to direct the nozzle in sexual relation to the canopy on a case - by - case basis , but still swear solely on water to distribute the insecticide .
These engineering have their berth , but the trust on hydraulic pressure and aircraft carrier loudness has drawback :
line - assisted spraying can be a feasible choice ( and an improvement ) over these approaches . Stationary or roving , many ultra - downhearted loudness sprayers already employ air to capitalise on the mechanical reward offered by smaller and more legion droplets . Finer droplets have very short great deal , so they must be conduct and carried by air currents to get them to the aim . Sufficient aura vigor will also preempt the air within the mark canopy and physically let on otherwise hidden flora surface to the atomiser .
The upshot is that tune can partly replace water as a carrier and it has the potential drop to improve coverage uniformness throughout the target canopy .
register the complete enquiry atwww.sprayers101.com .
This inquiry was performed with Dr. Sarah Jandricic , OMAFRA Greenhouse Floriculture IPM Specialist . Thanks to Schenk Farms and Greenhouses Co. for collaborating in the study .
