Staying on top of all the latest ag technology, field data and research can be overwhelming. That’s why the Soybean Research & Information Initiative, formerly the Plant Health Initiative, continually provides you with access to expert information and news about soybean pests, diseases, and agronomics. The aim of this check off-funded website is to communicate the on-going progress and current understanding coming from your active and wide-ranging U.S. soybean research programs. Please visit often!

RESEARCH HIGHLIGHTS

Thu - April 6, 2017
by Yuba Kantel and Daren Mueller, Soybean Plant Pathologists, Iowa State University

In our regional field tests we did not find that early planting (first week of May in most locations) increased the amount of SDS that developed later in the season compared to mid-May and later plantings, nor did we find a correlation between soil temperature at planting and SDS development. The soil temperature at the early planting dates had reached 55 to 60° F., the minimum germination temperature for soybean.  MORE
Tue - March 21, 2017
by Shawn P. Conley, Soybean and Wheat Extension Specialist, University of Wisconsin

A variety is classified to a specific maturity group (MG) according to the length of period from planting to maturity. This phenological attribute is determined by photoperiod and temperature, which can dictate the most suitable MG for a particular geographical location.

Although photoperiod remains constant, climatic conditions, management practices, and soybean genetics have all changed during the past decades. With funding support from the Wisconsin Soybean Marketing Board and the North Central Soybean Research Program, we re-delineated soybean MG adaptation zones across the U.S. using current soybean genetics and climate conditions.  MORE
Wed - March 8, 2017
By Anne Dorrance, Soybean Plant Pathologist, Ohio State University

Soybean diseases caused by Phytophthora sojae have been managed successfully for many years with the deployment of single resistance Rps genes as well as partial resistance. However, there are now increasing reports of soybean varieties sold with Rps genes that are no longer effective towards the regional population of P. sojae or that lack sufficient levels of partial resistance.  MORE
Wed - February 22, 2017
by Randall Nelson, USDA-ARS, University of Illinois

We crossed cultivated soybean (Glycine max) with a distant perennial relative, Glycine tomentella, and were the first to test derived lines. The best line yielded 7 bu/ac greater than the soybean parent, Dwight. We also crossed cultivated soybean with wild annual soybean (Glycine soja) and identified lines that were equal in yield to the soybean parent, seven days earlier in maturity, yet had 50% of the wild parent DNA based on analysis with DNA markers. This work indicates that very useful yield genes exist in wild relatives of cultivated soybean which are not yet being used in commercial soybean breeding today.  MORE