Making the Pressure Gauge your Speedometer – Tips with Tom #4

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Good spray quality is essential in application, but all of the factors involved can make getting there quite a challenge. In reviewing magazines, you may see that publishers will bold a certain pressure (like 40 psi). They do this not because that is the pressure the nozzle must experience, but because that is the pressure […]

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Choosing Nozzles for Diverse Applications – Tips with Tom #3

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After running through your sprayer’s routine maintenance, it’s time to assess the suitability of its nozzles for upcoming applications, and, let’s face it, that decision can be pretty complicated. Besides the typical competition between manufacturers, you also have to consider spray quality. Do you want coarse droplets? Fine droplets? Air induction nozzles? Twin-fan nozzles? How […]

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Spray Coverage in Potato

The location of water-sensitive papers in the potato plant canopy. Two plants were papered for each nozzle.

In June, 2014, 30 growers attended a spray coverage demonstration in a potato field in Alliston, Ontario. Our goal was to explore three questions: What is the effect of droplet size on coverage? What is the effect of volume on coverage? What is the effect of spray angle on coverage? This certainly wasn’t a scientific experiment. […]

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Soil Drench Applications in Strawberries

The soil probe. See how far water infiltrates soil by taking core samples.

Article co-written with Pam Fisher, former OMAFRA Berry Crop Specialist, and Anne Verhallen, OMAFRA Soil Management Specialist In 2013, A few strawberry growers were asked what spray volume they used to apply routine pesticides. The results ranged from 250 to 650 l/ha (26.7 to 69.5 US g/ac) for fungicides, herbicides and insecticides. Miticide applications were as high […]

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Circulating Spray Mix Through a Tank-Rinse Nozzle Maintains Nematode Concentration

(A) Tank-rinse assembly mounted through tank lid with a flow-regulating valve. (B) Close up of tank-rinse nozzle.

This article was co-written with Jennifer Llewellyn, OMAFRA Nursery Crop Specialist Many horticultural commodities, such as turfgrass and nursery crops, include the application of live nematodes as part of their annual IPM program. In 2013 we performed preliminary research into the claim that a grower’s nematode applications were becoming less effective. In the course of […]

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