Irrigation

Field Day to Explore Systems Approach to Cropping and Irrigation Management August 4, 2016

Nebraska Extension and the Nebraska Water Balance Alliance will host a field day on the Systems Approach to Cropping and Irrigation Management Tuesday, August 23 at North Platte.

The West Central Water and Crops Field Day will be at the UNL West Central Research and Extension Center at 402 W. State Farm Road, starting with registration at 8 a.m. and presentations at 8:30 a.m.

Read more

Economics of Variable Frequency Drives for Irrigation Pumps June 23, 2016

Dilshad Brar, a graduate student in the UNL Biological Systems Engineering Department, looked at 1000 center pivot installations in 10 Nebraska counties to determine if placing a variable frequency drive (VFD) on the system would be economical. He also looked at the best location for the VFD pressure sensor. Brar breaks it down to four common scenarios, outlining when it pays and when it doesn't.

Read more

Corn leaf rolling
Figure 1. One indicator of heat stress is when corn leaves roll in the early morning in areas where there is adequate soil moisture.

Impacts of Extreme Heat Stress and Increased Soil Temperature on Plant Growth and Development June 21, 2016

Both corn and soybean are susceptible to extreme heat (and water) stress during early vegetative stages as well as later critical growth stages (pollination for corn and flowering for soybean). Extreme heat stress can reduce plant photosynthetic and transpiration efficiencies and negatively impact plant root development, which collectively can negatively impact yield. The author recommends that during an extended heat wave (air temperature equal to or greater than 90 F for 7-10 days), applying 0.25-0.40 inch of water can be very beneficial.

Read more

Page spread for UNL Ag Water Management Guide
Page spread for UNL Ag Water Management Guide

New, Multi-Media Ag Water Management Guide June 15, 2016

Nebraska Extension's new Agricultural Water Management Guide, an online, interactive resource, offers information, videos, and illustrations about various types of irrigation, their advantages and disadvantages, technologies and strategies.

Read more

Watermark sensor installed in corn
Figure 1. Early installation of Watermark sensors minimizes root damage and allows the sensor time to acclimate with the soil.

Irrigation Sensor Installation Tips May 26, 2016

As planting progresses across the state, it is recommended that irrigators start installing water sensors in fields as time allows. Any time sensors are installed, a few simple questions should be addressed to ensure accurate readings for irrigation management later this season.

1)  When should sensors be installed?

Read more

ETgage in a soybean field
Figure 1. ETgage installed near soybean field

Atmometer (ETgage) Installation Tips May 26, 2016

ETgages estimate potential crop evapotransiration, allowing growers to track crop water use and apply irrigation more precisely when the crop can best use it. Learn about how to prepare and install ETgages and use the resulting data. Includes table of crop coefficients for corn, soybean, and wheat.

Read more

North Platte River Basin Water Update May 18, 2016

A collaboration of management agencies is closely monitoring the situation as reservoirs on the North Platte River in Wyoming fill and water is released. Flooding is likely in an area along the river in western Nebraska for several weeks to several months. Minor to moderate lowland flooding is occurring along the North Platte River from Lewellen west into southeastern Wyoming and will continue for several weeks or months. The areas affected are primarily the river bottom, mostly pasture but some cropland and homes.

Read more

Pathfinder Reservoir Dam Overflow photo by Gary Stone
Pathfinder Reservoir Dam Overflow photo by Gary Stone

North Platte River Basin Water Update May 4, 2016

Recent storms rolling through southeast Wyoming and the Nebraska Panhandle have brought considerable moisture to the North Platte River Basin. The typical time for runoff/snowmelt in the Snowy Range and Sierra Madre mountains in southeastern Wyoming is mid-April; however, this year it was delayed several weeks and is just starting.

Read more

Pages