Corn yield forecasts for Nebraska sites indicate near-average to above average yields for most irrigated sites. There was much more yield variability for rainfed locations where three of the sites were forecast with a 50%-100% chance of below-normal yields and three were forecast for normal yields, while one was near average.
Considering the day to day and week to week variability in weather we’ve experienced and the wide range of regional conditions across Nebraska this year, scouting fields for kernel set and overall condition may be more important than ever. Check out these corn reports from across the state.
Corn growth stages are estimated for 41 sites in 10 states and yields are estimated for select irrigated and rainfed sites, based on the Hybrid-Maize model and input from specialists and educators across a 10-state area as of July 18, 2017. The authors note that these early season yield forecasts vary widely, particularly for rainfed fields, and may change considerably by end of season.
This article discusses data and data collection for the Yield Forecasting Center forecasts of crop phenology and yield for 2017, including a map of the site locations and specific data on crop management and soil types for each site.
Have you ever wondered how fast corn roots grow? Colleagues at Iowa State University have a number: more than 2 ¾ inches per leaf stage. That's about one inch per day! Soil cores were taken in the row and in the center between two rows. They used the cores to identify the presence of roots (depth and lateral growth).
Nebraska soybean and corn yields steadily increased from 1971 to 2016, in both irrigated and rainfed production fields. Charts based on USDA National Agricultural Statistics Service numbers track these changes.
Widespread yellowish corn seedlings this spring may be due to the slightly sun- and heat-starved seedlings running out of the seed’s stored energy before the main nodal roots take over. A little sun and heat should green them up without affecting yield.