Colorado Soybean Performance Results 2003

Growing demand for soybean production information gave rise to soybean variety testing on a statewide basis in 2001. Colorado State University’s Crop Testing team began testing soybean varieties to provide unbiased and reliable variety information to Colorado soybean producers to help them make better variety decisions.

2003 was our third and best year of testing soybean varieties at Yuma. The 2001 trial was severely compromised by hail. Our second attempt at soybean variety testing at Yuma was more successful, without hail and with vigorous vegetative growth, but yields were depressed by high temperatures and mediocre seed set. This sprinkler irrigated trial included only Roundup Resistant varieties. Yuma has a relatively long growing season (average 2615 corn growing degree days) and appropriate for Group 2 maturity varieties.

Rocky Ford, site of soybean variety trials for several years, has a longer growing season (2837 corn growing degree days) and can produce late Group 3 or early Group 4 maturity soybeans. We are extremely pleased with high yields in 2003 at Yuma and the Arkansas Valley Research Center at Rocky Ford. The Rocky Ford trial was furrow irrigated and both conventional and Roundup Resistant varieties were included where conventional herbicides were used. Plots in both trials consisted of four rows, each 36 ft long. Yields are expressed at 13% grain moisture as bu/ac (60 lbs per bushel).

Soybean variety performance trial at Rocky Ford¹ in 2003.

Soybean Plot Plans for 2003 (pdf files)
Rocky Ford	Yuma

You are the visitor to the Colorado Soybean Variety Performance page.
Page composed by Jerry J. Johnson and last updated October 8, 2003.