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Plant Sciences

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Utah Pests

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Lily Leaf Beetle, Ann Mull, Lori R. Spears Nov 2021

Lily Leaf Beetle, Ann Mull, Lori R. Spears

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The lily leaf beetle (LLB) (Coleoptera: Chrysomelidae) is an important pest from Eurasia that threatens native and cultivated true lilies (Lilium spp.) and fritillaries (Fritillaria spp.). It is also known as the red lily leaf beetle or scarlet lily beetle. LLB was first reported in North America in Montréal, Canada, in 1945 and in the U.S. in 1992 in Massachusetts, likely arriving via European shipments of lily bulbs. LLB has been detected in nine of the 10 Canadian provinces and 14 U.S. states, including the New England states, Pennsylvania, Wisconsin, Minnesota, and Washington (EDDMapS, 2021). Based on LLB’s native distribution …


Using Degree Days To Time Treatments For Insect Pests, Marion Murray Mar 2020

Using Degree Days To Time Treatments For Insect Pests, Marion Murray

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Insecticides that are applied for a perennial insect pest based on a calendar date often result in poor insect control and a waste of resources. Insect activity varies from year to year depending on weather. For example, in Logan, Utah, eggs of the apple pest codling moth began hatching on May 15 in 2005, May 5 in 2006, and April 30 in 2007.


Turfgrass Cultural Practices And Insect Pest Management, Diane Alston, Kelly Kopp Sep 2010

Turfgrass Cultural Practices And Insect Pest Management, Diane Alston, Kelly Kopp

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There are a number of insects that can cause aesthetic and economic loss to turfgrass in Utah – in home lawns as well as in athletic fields and on recreational lands. Good turfgrass cultural practices are the primary way to prevent insect infestation and turfgrass damage.


Growing Turf On Salt-Affected Sites, Michael Pace, Paul Johnson Apr 2002

Growing Turf On Salt-Affected Sites, Michael Pace, Paul Johnson

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In many areas of Utah, high salt levels in the soil limit the growth of some turfgrasses, especially Kentucky bluegrass. This fact sheet was written to assist you in determining if you have a soil with a high salt level and, if you do, how to manage it with the use of irrigation, drainage, and salt tolerant grasses.


Grass Pasture Response To Water And Nitrogen, Robert W. Hill, Robert Newhall, Scott Williams, Brian Andrew Jun 2000

Grass Pasture Response To Water And Nitrogen, Robert W. Hill, Robert Newhall, Scott Williams, Brian Andrew

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The objective of this project is to study the response of pasture grass varieties to weather, irrigation and fertility in a field experimental plot at a high elevation. The water variable is accomplished with a line source sprinkler irrigation system. Two nitrogen fertility levels were imposed on two of the grass varieties