VRI - Corn Product Response to Irrigation and Population – Hugoton, KS

​​

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 determine the yield response of key DEKALB® brand corn products for the region based on planting population and irrigation amount.
Location Soil Previous
Crop
Tillage
Type
Planting
Date
Harvest
Date
Potential
Yield/Acre
Planting
Rate/Acre
Hugoton, KS Sandy loam Soybean/winter wheat Strip tillage 05/13/2017 10/25/2017 300 bu 24K, 30K, 36K, and 42K

SITE NOTES:

  • Ten DEKALB® brand corn products were planted at 24K, 30K, 36K, and 42K (K = 1,000) seeds/acre (s/a) under 100% full irrigation (100% FI) and 50% of full irrigation (50% FI).
  • Corn products and planting rates were replicated two times under the 100% FI and 50% FI treatments.
  • The trial was irrigated with a center pivot system using speed control to manage the amount of irrigation.
  • The 100% FI treatment received 14.25 inches of irrigation and the 50% FI treatment received approximately 7.0 inches of irrigation.
  • At planting, the soil water profile was full and the site received approximately 11 inches of rain during the growing season.

UNDERSTANDING THE RESULTS

 

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

WHAT DOES THIS MEAN FOR YOUR FARM?

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