John H. Grove
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View article: Delta yield predicts nitrogen fertilizer requirements for corn in US production systems
Delta yield predicts nitrogen fertilizer requirements for corn in US production systems Open
Predicting crop nitrogen (N) fertilizer needs is a major challenge in contemporary agriculture. Despite the success of current N recommendation tools, environmental concerns over N pollution from agriculture, and the adoption of improved c…
View article: The missing link: A purpose‐led framework for assessing soil health
The missing link: A purpose‐led framework for assessing soil health Open
Human food supply depends on healthy soils, yet lack of metrics to estimate returns from soil‐health‐improving practices (SHIPs) limits their adoption at ecologically significant scale. To address this limitation, we evaluate a purpose‐led…
It Takes More than Calcium to Neutralize Soil Acidity Open
Proper pH management is the foundation to a good soil fertility program. Soil pH influences nutrient availability and root growth and function. Just because an agricultural product contains calcium does not mean that it will change soil pH…
View article: Selecting soil hydraulic properties as indicators of soil health: Measurement response to management and site characteristics
Selecting soil hydraulic properties as indicators of soil health: Measurement response to management and site characteristics Open
Farmers, scientists, and other soil health stakeholders require interpretable indicators of soil hydraulic function. Determining which indicators to use has been difficult because of measurement disconformity, spatial and temporal variabil…
View article: Defining relative yield for soil test correlation and calibration trials in the Fertilizer Recommendation Support Tool
Defining relative yield for soil test correlation and calibration trials in the Fertilizer Recommendation Support Tool Open
The Fertilizer Recommendation Support Tool (FRST) will perform correlations between soil nutrient concentrations and crop response to fertilization from user‐selected datasets in the FRST national database. Yield response for the nutrient …
View article: Carbon‐sensitive pedotransfer functions for plant available water
Carbon‐sensitive pedotransfer functions for plant available water Open
Currently accepted pedotransfer functions show negligible effect of management‐induced changes to soil organic carbon (SOC) on plant available water holding capacity (θ AWHC ), while some studies show the ability to substantially increase …
View article: Variation in soil‐test‐based phosphorus and potassium rate recommendations across the southern USA
Variation in soil‐test‐based phosphorus and potassium rate recommendations across the southern USA Open
Thirteen states associated with the Southern Extension and Research Activities Information Exchange Group‐6 (SERA‐IEG‐6) agreed to share their soil test based P and K rate recommendations for nine major crops. The objectives were to compar…
Lower Cancer Incidence in Amsterdam-I Criteria Families Without Mismatch Repair Deficiency: Familial Colorectal Cancer Type X Open
Approximately 60% of families that meet the Amsterdam-I criteria (AC-I) for hereditary nonpolyposis colorectal cancer (HNPCC) have a hereditary abnormality in a DNA mismatch repair (MMR) gene. Cancer incidence in AC-I families with MMR gen…
Getting the Full Benefit of Your Lime/Fertilizer Dollar Open
Start with a soil test, even if soil testing is not a perfect way to identify nutrient needs. There are no one-size-fits-all formulas for starting a field of alfalfa – every field is ‘fertility unique’. Your prior knowledge of the field wi…
Relationship of Agronomic Practices to Soil Nitrogen Dynamics Open
Soil nitrogen (N) dynamics are a major concern of soil nutrient status and its supply for crop uptake and growth. They are a central focus of agroecosystems. Agronomic practices play a central role in regulating soil N dynamics; the method…
View article: Cohort Profile: The Colon Cancer Family Registry Cohort (CCFRC)
Cohort Profile: The Colon Cancer Family Registry Cohort (CCFRC) Open
Mark A Jenkins, Aung Ko Win, Allyson S Templeton, Maggie S Angelakos, Daniel D Buchanan, Michelle Cotterchio, Jane C Figueiredo, Stephen N Thibodeau, John A Baron, John D Potter, John L Hopper, Graham Casey, Steven Gallinger, Loic Le March…
View article: Strengths and Limitations of Nitrogen Rate Recommendations for Corn and Opportunities for Improvement
Strengths and Limitations of Nitrogen Rate Recommendations for Corn and Opportunities for Improvement Open
Core Ideas Nitrogen recommendations for individual corn fields are less accurate than desired. Nitrogen recommendations need improvement for economic and environmental reasons. A review of fundamental concepts will improve understanding ab…