Science briefs

Rice plants toward the end of the vegetative stage grown in a con- trolled environment for greenhouse gas analyses. Photo by Diego Della Lunga.

Water Regime and Phosphorus Effect on Greenhouse Gas Emissions in Rice

May 15, 2024

Researchers (l to r: Matthew Streeter, Keith Schilling, and Tom Stoeffler) from the Iowa Geological Survey collect a soil sample from the Lake Red Rock delta in central Iowa. Photo by Todd Goss- elink, Iowa Department of Natural Resources.

Raising Reservoir Pool Levels to Manage Nitrate Loss

May 13, 2024

Cereal rye cover crop after termination. Photo by Muthukumar Bagavathiannan.

Predicting Cover Crop Biomass from Early-Season Biomass and Weather Data

May 13, 2024

Planting cabbage seedlings in South Africa. Photo by Jemal Countess/Solidarity and reprinted here under this license: https:// creativecommons.org/licenses/by-nd/2.0/.

Inequalities in South Africa’s Agricultural Sector Amid COVID-19

May 13, 2024

Conservation acres under selected practices in the Mississippi Delta region during 2005–2022. Image courtesy of USDA-NRCS (2023).

Do Farmers Continue Conservation Practices After Government Funding Ends?

April 11, 2024

A schematic exploring the USEPA’s changes to pesticide registration to meet Endangered Species Act obligations, including the introduc- tion of a menu of suggested mitigation measures for applicators to choose from. Source: Duzy et al. (2023).

USEPA’s Addition of Mitigation Measures Adds Complexities to Pesticide Use

April 11, 2024

Aerial view of the oil spill remediation site and research plots with inset showing the thermal desorption unit used to treat soils during this project. Photos by Vern Whitten and Peter O’Brien.

Outcomes of Oil Spill Remediation Using Thermal Desorption

April 11, 2024

A forage chopper harvesting photoperiod-sensitive sorghum in Boone, IA at the end of the season. Photo by Joshua Kemp, Iowa State University.

Robotic System Reveals Genetics of Sorghum Canopy Architecture

April 4, 2024

Commercial food-grade hard endosperm maize ears (left) and regular soft maize ones (right) harvested in Zavalla, Santa Fe, Argentina. Photo by Lucas Abdala.

Yield and Milling Quality Trade-Offs in Argentinian Flint Maize

April 4, 2024

Fertilizer nitrogen injection through anhydrous ammonia reduces potential nitrogen losses and keeps nitrogen in a more stabilized ammonium form during the early growing season. Photo courtesy of UNL CropWatch.

Nitrogen Source Affects In-Season Availability More Than Nitrification Inhibitors

April 4, 2024

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