Proceedings
Authors
| Filter results4 paper(s) found. |
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1. Updating Phosphorus Recommendations for IllinoisIllinois soil phosphorus (P) recommendations are outdated and make use of concepts such as soil P supply power are outdated. This 2022 Illinois State Report provides a summary and outlook on key considerations for P recommendations that may be instructive to other North Central states. ... A. Margenot |
2. Crop and Soil Response to Different Phosphorus Management ApproachesPhosphorus (P) management has implications for crop production and water quality issues in Ohio. Recent data from 457 field P trials conducted in Ohio reported less than 25% positive yield response to P fertilization. It warrants further evaluation of crop P uptake, soil P levels and environmental factors to improve the predictability of crop yield response. Therefore, we collected soil and plant data from three P fertilizer trials (Wooster, South Charleston, and Custar) established in 2006. These... M. Rakkar, L. Fleuridor, S. Culman, G. Labarge |
3. County-Level Phosphorus Balances for 2017 in IllinoisCropland phosphorus (P) balances (manure and fertilizer P minus crop P removal) are great sustainability tools to assess long-term managements at farm, county, and state levels. Our objectives were to estimate county, regional, and state-level cropland P balances for Illinois in 2017. Based on the census data in 2017, Illinois county P balance ranged from -14.38 to 36 lb/acre/yr. Overall, Illinois had a negative P balance at about -3 lb/acre/yr. About 71% of counties, had a negative P balance,... X. Liu, S. Xu, A. Margenot, A. Sadeghpour, O. Zandvakili, M. Guzel |
4. Phosphorus Management in the North Central Region: A Brief History, Current Unknowns and Next StepsThe history of phosphorus (P) reflects the history of agriculture in the North Central region. The yield-limiting importance of P, secondary to nitrogen, was recognized as at the turn of the 19th century. An overview of key developments and unfinished business following the picking of these low hanging fruit in the 20th century that face researchers, agronomists, and producers will be discussed. These include assessing P mobility, P sources from fertilizer versus soil, the concept of... A. Margenot |