Winter rye (Secale cereale L.) cover crop (RCC) has potential to reduce NO3–N loss from corn (Zea mays L.) and soybean [Glycine max (L.) Merr.] fields. However, RCC effects on annual crop productivity and corn optimal N fertilization requirement are unclear. The objectives were to evaluate corn and soybean yield response to RCC and corn optimal N rate. Treatments were no-RCC and RCC with six fertilizer N rates (0–225 kg N ha-1) applied to corn in a no-till corn–soybean (CS) rotation at four Iowa sites in 2009 through 2011. The RCC biomass and N uptake was low, with a maximum of 1280 kg dry matter (DM) ha-1 and 26 kg N ha-1, respectively. In the no-N control, the RCC reduced soil profile NO3–N by 15 kg N ha-1 only at time of RCC control befo...
Water quality impairment related to nitrogen (N) continues to be a concern in Iowa, including meetin...
Nitrogen loss from applied fertilizer can be a significant environmental quality issue if NO3 moves ...
Nitrogen (N) fertilization recommendations are not available for corn in rotation with small grains ...
Winter rye (Secale cereale L.) cover crop (RCC) use in corn (Zea mays L.) and soybean [Glycine max. ...
Objectives of this project were to study corn nitrogen (N) fertilization requirement and corn/soybea...
Winter cereal rye continues to be promoted as a viable cover crop within Iowa for corn and soybean p...
Water quality impairment related to N loss from crop production fields continues to be a concern in ...
Objectives of this project were to study corn nitrogen (N) fertilization requirement and corn-soybea...
Nitrogen (N) fertilizer inputs for intensive corn-based cropping systems can increase nitrate (NO3-–...
Cover crops (CC) in corn (Zea mays L.) and soybean [Glycine max (L.) Merr.] rotations may prevent N ...
Fall implementation of a rye (Secale cereale L.) cover crop (RCC) prior to spring corn (Zea mays L.)...
Nitrogen use efficiency (NUE) is of economic and environmental importance. Components of NUE were e...
Winter rye (Secale cereale L.) as a cover crop can take up residual inorganic N between annual row c...
Increasing concerns about production cost and environmental impacts of N fertilization require impro...
Improved agronomic management strategies are needed to minimize the impact that current maize (Zea m...
Water quality impairment related to nitrogen (N) continues to be a concern in Iowa, including meetin...
Nitrogen loss from applied fertilizer can be a significant environmental quality issue if NO3 moves ...
Nitrogen (N) fertilization recommendations are not available for corn in rotation with small grains ...
Winter rye (Secale cereale L.) cover crop (RCC) use in corn (Zea mays L.) and soybean [Glycine max. ...
Objectives of this project were to study corn nitrogen (N) fertilization requirement and corn/soybea...
Winter cereal rye continues to be promoted as a viable cover crop within Iowa for corn and soybean p...
Water quality impairment related to N loss from crop production fields continues to be a concern in ...
Objectives of this project were to study corn nitrogen (N) fertilization requirement and corn-soybea...
Nitrogen (N) fertilizer inputs for intensive corn-based cropping systems can increase nitrate (NO3-–...
Cover crops (CC) in corn (Zea mays L.) and soybean [Glycine max (L.) Merr.] rotations may prevent N ...
Fall implementation of a rye (Secale cereale L.) cover crop (RCC) prior to spring corn (Zea mays L.)...
Nitrogen use efficiency (NUE) is of economic and environmental importance. Components of NUE were e...
Winter rye (Secale cereale L.) as a cover crop can take up residual inorganic N between annual row c...
Increasing concerns about production cost and environmental impacts of N fertilization require impro...
Improved agronomic management strategies are needed to minimize the impact that current maize (Zea m...
Water quality impairment related to nitrogen (N) continues to be a concern in Iowa, including meetin...
Nitrogen loss from applied fertilizer can be a significant environmental quality issue if NO3 moves ...
Nitrogen (N) fertilization recommendations are not available for corn in rotation with small grains ...