Physical Sciences and Mathematics Commons^™

Electronic Field Trips For Science Engagement: The Streaming Science Model, Jamie Loizzo, Mary J. Harner, Deborah J. Weitzenkamp, Kevin Kent

Journal of Applied Communications

While institutions of higher education work to engage PK-12 youth in STEM (science, technology, engineering, and mathematics) concepts and careers via in-person programming, PK-12 teachers and students face many logistical and access constraints for physically traveling to sites off of school grounds during the school day. Throughout the years, electronic field trips (EFTs) have offered a digital way for schools to engage in meaningful ways with museums, parks, laboratories, and field research sites. In order for EFTs to be effective, they should be cost effective and created collaboratively with teachers, students, subject matter experts, and instructional design and communication professionals. …

Characterization Of Claypan Soils In Southeastern Kansas, M. A. Mathis Ii, S. E. Tucker-Kulesza, G. F. Sassenrath

Kansas Agricultural Experiment Station Research Reports

Soil erosion reduces topsoil depth. In areas with a claypan, removal of productive topsoil reduces crop yield where the claypan layer is near the surface. The topsoil and claypan layer each have unique characteristics that impact crop production and within-field variability. To better understand these differences, the soil from an area of low crop yield and high crop yield were collected and laboratory tests were performed to determine the soil classification and undrained shear strength. Understanding the soil properties and the interaction between the topsoil and claypan layers may aid in under­standing the process by which topsoil is being eroded.

Annual Summary Of Weather Data For Parsons - 2018, M. Knapp

Kansas Agricultural Experiment Station Research Reports

Annual summary of weather data for Parsons, Kansas, 2018.

Precipitation Data, M. Knapp

Kansas Agricultural Experiment Station Research Reports

Precipitation data for Kansas Agricultural Experiment Stations and fields, 2017-2018.

Changes In Soil Microbiology Under Conventional And No-Till Production During Crop Rotation, C. J. Hsiao, G. F. Sassenrath, L. Zeglin, G. Hettiarachchi, C. Rice

Kansas Agricultural Experiment Station Research Reports

Soil microbial activity is important for crop production. Soil microbes are involved in nutrient and water cycling within the soil, and interact with crop plants to provide the basic nutrient and water resources needed for crop production. Claypan soils have unique physical characteristics that impact soil biology. This study explored the tempo­ral changes in soil microbiology in a claypan soil under conventional and no-till produc­tion during a crop rotation of corn/winter wheat/soybean/fallow commonly planted in southeast Kansas. We found soil microbial activity changed more in the top two inches of soil than in the lower soil layers. Wheat resulted in …

Weather Information For Tribune, D. Bond, J. Slattery

Kansas Agricultural Experiment Station Research Reports

Summary of 2018 weather for research conducted at the Tribune field location.

Correlation Of Sikora And Smith-Mclean- Pratt Soil Buffer Ph Measurements, B. Rutter, D. A. Ruiz Diaz, J. Thomas

Kansas Agricultural Experiment Station Research Reports

Historically, the K-State Research and Extension Soil Testing Laboratory has used the Smith-McLean-Pratt (SMP) buffer solution to estimate total soil acidity and estimate lime recommendations. The SMP solution contains hazardous chemicals and poses a health risk to lab workers. The Sikora buffer solution was designed as a replacement for SMP and contains no hazardous chemicals. A study was conducted to investigate the relationship between these two buffers in Kansas soils. A strong positive correlation was observed between SMP and Sikora buffer pH measurements. However, linear regression suggests that the relationship is not 1:1 (slope = 0.88). Therefore recommendation equations using …

Field Station Weather Reports, E. A. Adee, M. Knapp

Kansas Agricultural Experiment Station Research Reports

The research program at the Kansas State University East Central Kansas Experiment Field is designed to keep area crop producers abreast of technological advances in agro­nomic agriculture. Specific objectives are to (1) identify top performing varieties and hybrids of wheat, corn, soybean, and grain sorghum; (2) establish the amount of tillage and crop residue cover needed for optimum crop production; (3) evaluate weed and disease control practices using chemical, no chemical, and combination methods; and (4) test fertilizer rates, timing, and application methods for agronomic proficiency and environmental stewardship.

The Kansas River Valley Experiment Field was established to study management …

Weather Information For Garden City, 2018, J. Elliott

Kansas Agricultural Experiment Station Research Reports

Summary of 2018 weather for research conducted at the Garden City field location.

Correlation Between Mehlich-3 And Ammonium Acetate Extractable Potassium In Kansas Soils, B. Rutter, D. A. Ruiz Diaz

Kansas Agricultural Experiment Station Research Reports

The K-State Research and Extension Soil Testing Laboratory has been using Mehlich-3 soil test procedures for phosphorus (P) extraction, and ammonium acetate extraction for potassium (K). Previous research in other states has shown a strong correlation between these two tests for K, but data correlating the two in Kansas soils have been limited. A study was performed on soils from across the state to investigate the relationship between these two methods. A strong positive correlation was observed (r = 0.99) across the wide range of soil types, pH, and fertility conditions represented in the sample set. Linear regression suggests a …