Proceedings :: North Central Soil Fertility Conference

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Bolstad, P.V

Christianson, L

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Authors

Yost, M.A

Russelle, M.P

Coulter, J.A

Bolstad, P.V

Jenks, A.C

Preza-Fontes, G

Nafziger, E

Christianson, L

Pittelkow, C

Topics

State Report

Type

Oral

Year

2013

2020

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Filter results2 paper(s) found.
1. Geographic Trends in Alfalfa Stand Age and Crops that Follow Alfalfa To gain perspective on alfalfa-annual crop rotations in the upper Midwest, USDA-National Agricultural Statistics Service cropland data layers and Soil Survey Geographic Database layers were combined for six states (North Dakota, South Dakota, Nebraska, Minnesota, Iowa, and Wisconsin) and seven years (2006-2012). Soil texture and geographic location both significantly affected the length of the alfalfa phase (stand age), and alfalfa stand age, soil texture, and year all significantly affected the... Download paper
2. Relationship of in-season soil nitrogen concentration with corn yield and potential nitrogen losses Modeled or measured soil mineral N (SMN) levels during the corn growing season have been used to set sidedress N rates, but there has been little research linking SMN levels at different growth stages to yield to help guide this process. The degree to which SMN level influences the risk of N losses is also not known. Data from 32 site-years of field experiments in Illinois (2015–2018) that included 12 combinations of N fertilizer rate, timing, and source, were used to evaluate... G. Preza-fontes, E. Nafziger, L. Christianson, C. Pittelkow

Filter results2 paper(s) found.

1. Geographic Trends in Alfalfa Stand Age and Crops that Follow Alfalfa

To gain perspective on alfalfa-annual crop rotations in the upper Midwest, USDA-National Agricultural Statistics Service cropland data layers and Soil Survey Geographic Database layers were combined for six states (North Dakota, South Dakota, Nebraska, Minnesota, Iowa, and Wisconsin) and seven years (2006-2012). Soil texture and geographic location both significantly affected the length of the alfalfa phase (stand age), and alfalfa stand age, soil texture, and year all significantly affected the...

Download paper

2. Relationship of in-season soil nitrogen concentration with corn yield and potential nitrogen losses

Modeled or measured soil mineral N (SMN) levels during the corn growing season have been used to set sidedress N rates, but there has been little research linking SMN levels at different growth stages to yield to help guide this process. The degree to which SMN level influences the risk of N losses is also not known. Data from 32 site-years of field experiments in Illinois (2015–2018) that included 12 combinations of N fertilizer rate, timing, and source, were used to evaluate... G. Preza-fontes, E. Nafziger, L. Christianson, C. Pittelkow