VRI - Corn Product Response to Irrigation and Population - Gothenburg, NE - DEKALB

TRIAL OVERVIEW

  • With the increase in limited irrigation due to reductions in pumping capacity or restrictions on the amount of water producers are able to pump over a certain period of time, it is imperative that Monsanto tests products under varying irrigation rates to supply better corn product recommendations by irrigation level.

RESEARCH OBJECTIVE

  • The objective of this study was to evaluate the effect of different seeding rates under full and limited irrigation on the yield of Channel® corn products.
Location Soil Previous
Crop
Tillage
Type
Planting
Date
Harvest
Date
Potential
Yield/Acre
Planting
Rate/Acre
Gothenburg, NE Hord silt loam Corn Convnetional 05/07/2017 11/01/2017 240 bu 24K, 30K, 36K and 42K

SITE NOTES:

  • Eleven DEKALB corn products were evaluated under two irrigation rates: 100% full irrigation (FI) to meet the evapotranspiration demands of the crop (totaling 6 inches) and 50% of FI (totaling 3 inches).
  • Irrigation treatments were applied using a variable rate irrigation system.
  • The study design was a split-split plot with irrigation as the whole plot, corn product as the first split, and planting density as the second split.

UNDERSTANDING THE RESULTS

 
Table 1. Channel corn product performance influenced by seeding and irrigation rate

WHAT DOES THIS MEAN FOR YOUR FARM?

  • Farmers should carefully consider corn product selection and seeding rate based on the irrigation capabilities in each field to help maximize their return.
  • Monsanto intends to continue these trials for the 2018 season.