Browse Field Crops Resources

Lynn Ketchum
Displaying 1 - 10 of 156 resources

Low energy precision application (LEPA) and low elevation spray application (LESA) trials in the Pacific Northwest

LEPA and LESA are alterations on a center pivot where the sprinklers are moved much closer to the ground, the spacing between sprinklers is reduced (more sprinklers), and water is emitted at very low pressures. It saves water (18%), it saves energy (less water pumped and pumped at a lower pressure), and it helps growers get better yields especially in areas where water is limiting. However, it has an increased propensity for runoff, and the sprinklers operating below the top of the canopy can require some management changes. In many cases energy savings alone can pay for the increased costs of the additional sprinklers and drop hose. However, the largest profit potential lies in the ability to get improved yields in areas that are water short or have large water losses to wind drift and evaporation.

By Troy Peters, Howard Neibling, Richard Stroh, Behnaz Molaei, Hanny Mehanna | Publication

Researchers determine pollen abundance and diversity in five major pollinator-dependent crops

Aug 28, 2019
A new study provides valuable insights into pollen abundance and diversity available to honeybee colonies employed in five major pollinator-dependent crops in Oregon and California.

By Chris Branam | News Story

Program aims to lessen conflict between cannabis growers and conventional farmers

Jul 11, 2019
Oregon State University steps up to help mitigate clashes between conventional farmers and marijuana growers.  

By Kym Pokorny | News Story

What is Industrial Hemp?

Industrial hemp was grown as a commodity crop for decades until it was banned in the mid-1930s. Congress decriminalized the crop in 2018, sparking interest in it among growers in Oregon, where hemp can be grown successfully. The plant's uses and restrictions, as well as many frequently asked...

By Richard Roseberg, Silvia Rondon, Jay Noller, Valtcho Jeliazkov, Sam Angima | OSU Extension Catalog

Soil, Seedbed Preparation and Seeding for Hemp

Growers planting a successful commercial crop of hemp for seed, fiber, or resin will follow these guidelines for soil preparation, seeding, and irrigation.

By Richard Roseberg, Valtcho Jeliazkov, Sam Angima | OSU Extension Catalog

OSU Organic Fertilizer & Cover Crop Calculator: Predicting Plant-available Nitrogen

Describes the OSU Organic Fertilizer & Cover Crop Calculator and using it to predict plant-available nitrogen.

By Clare Sullivan, Dan Sullivan, Linda Brewer, Nick Andrews | OSU Extension Catalog

Sensor Sprayers for Specialty Crop Production

Sensor-controlled spray systems can help growers use fewer chemicals and less water while maintaining good pest control. Learn about the pros and cons of different types of sensor sprayers.

By Robin Rosetta, Jay Pscheidt, Lloyd Nackley | OSU Extension Catalog

Growing Malting Barley in and Around the Willamette Valley

Barley is a useful rotation crop that grows well in the Willamette Valley. But the region's craft beers and spirits generally use malting barley shipped from elsewhere. Can growers and brewers capitalize on high-quality, locally produced barley? Learn more about malting barley, study supply chain...

By Betsy Verhoeven, Ryan Graebner | OSU Extension Catalog