The purposes of the study were to determine the relationship which existed between higher cognitive level question wait-time range and student achievement, and whether students perceived biology student teachers who used a 1-4 second wait-time range as being either more or less effective than biology student teachers who used a...
Recommendations in this fertilizer guide apply to tillage fallow-winter wheat and chemical fallow-winter wheat cropping systems. This guide is one of a set of publications that address the nutritional requirements of nonirrigated cereal crops in north-central and eastern Oregon.
Recommendations for nitrogen, phosphorus, potassium, sulfur, chloride, and zinc are covered...
Soil acidity, expressed by low soil pH, causes reduced crop growth and significant economic loss. It is the most commonly overlooked and poorly understood yield-limiting factor in western Oregon and a developing concern in eastern Oregon. This publication describes the concept of soil acidity and the limitations it causes for...
This publication describes how to estimate lime application rate and lists criteria for choosing liming materials (source), lime application method (placement), and how often to apply lime (frequency).
This publication describes results of applied research on phosphorus fertilization of late-planted winter wheat in no-till fallow in the low-precipitation zone of Oregon and Washington.