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Influence of PRE-emergence herbicides on soybean development, root nodulation and symbiotic nitrogen fixation

Widespread occurrence of herbicide-resistant weeds has further limited effective POST-emergence herbicide options in soybean (*Glycine max* (L.) Merr.) leading to an increased adoption of PRE-emergence herbicides. The objective of this study was to …

Spray solution pH and soybean injury as influenced by synthetic auxin formulation and spray additives

Failure to control Palmer amaranth with glyphosate and protoporphyrinogen IX oxidase (PPO)-inhibitor herbicides was reported across southwestern Nebraska in 2017. The objectives of this study were to 1) confirm and 2) validate glyphosate and …

Distribution and validation of genotypic and phenotypic glyphosate and PPO-nhibitor resistance in Palmer amaranth (Amaranthus palmeri) from southwestern Nebraska

Failure to control Palmer amaranth with glyphosate and protoporphyrinogen IX oxidase (PPO)-inhibitor herbicides was reported across southwestern Nebraska in 2017. The objectives of this study were to 1) confirm and 2) validate glyphosate and …

Cover Crops, Hormones and Herbicides: Priming an Integrated Weed Management Strategy

Herbicide weed resistance has been a major issue of conventional global row crop agriculture for decades. Still current strategies and novel technologies available to address weed resistance are mainly herbicide-based. Thus, there is a need for …

Off-target movement assessment of dicamba in North America

A population of Amaranthus tuberculatus (var. rudis) was confirmed resistant to 4-hydroxyphenylpyruvate dioxygenase (HPPD)-inhibitor herbicides (mesotrione, tembotrione, and topramezone) in a seed corn/soybean rotation in Nebraska. Further …

Critical time for weed removal in glyphosate-resistant soybean as influenced by preemergence herbicides

Widespread and repeated use of glyphosate resulted in an increase in glyphosate-resistant (GR) weeds. This led to an urgent need for diversification of weed control programs and use of PRE herbicides with alternative sites of action. Field …

Assessment of Cover Crop Management Strategies in Nebraska, US

Adoption of cover crops has the potential to increase agricultural sustainability in the US and beyond. In 2017, a survey was conducted with Nebraska stakeholders in an attempt to evaluate current cover crop management strategies adopted in soybean …

Fitossociologia de plantas daninhas na cultura do milho submetida à aplicação de doses de nitrogênio

O nitrogênio aplicado às culturas pode alterar o comportamento das plantas daninhas. Assim, algumas espécies são favorecidas pela presença de adubos nitrogenados em doses elevadas, e outras se mostram indiferentes. A finalidade deste estudo foi …

Survey of Nebraska farmers’ adoption of dicamba-resistant soybean technology and dicamba off-target movement

In 2017, dicamba-resistant (DR) soybean was commercially available to farmers in the United States. In August and September of 2017, a survey of 312 farmers from 60 Nebraska soybean-producing counties was conducted during extension field days or …

Characterizing soybean vigor and productivity using multiple crop canopy sensor readings

Canopy reflectance has been used in crops, such as corn and wheat, to assess crop status and direct in-season management practices, but less research has focused on using canopy reflectance in soybean research and production. In this study, soybean …