Daniel E. Kaiser
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View article: Should starter fertilizer rate be adjusted by initial soil test P concentration?
Should starter fertilizer rate be adjusted by initial soil test P concentration? Open
Starter fertilizers containing phosphorus (P) are applied to increase corn ( Zea mays L.) early growth and ultimately grain yield. This study determined the rate of starter P needed to increase corn early plant growth and grain yield at di…
View article: Corn response to sulfur fertilizer rate and source in Illinois
Corn response to sulfur fertilizer rate and source in Illinois Open
Sulfur (S) is an essential nutrient for optimizing corn ( Zea mays L.) growth and yield. While S deficiency has increased in recent years, corn response to S fertilizer application remains challenging to predict owing to complex interactio…
View article: Factors affecting potassium retention in sandy soils
Factors affecting potassium retention in sandy soils Open
Potassium (K) is a critical macronutrient for maximizing yields in agricultural crops. However, inconsistent responses to K fertilizer or soil test K levels have led researchers to question which soil properties influence K availability an…
View article: Precipitation influences pre‐sidedress soil nitrate thresholds for corn production
Precipitation influences pre‐sidedress soil nitrate thresholds for corn production Open
Minnesota is a leading corn ( Zea mays L.) producer in the United States, requiring substantial nitrogen (N) inputs for optimal yields. Using an in‐season critical soil nitrate (NO 3 − ‐N) concentration threshold to adjust fertilization ra…
View article: Design of a European high-speed rail network and use of passenger demand forecasting to test European policy targets
Design of a European high-speed rail network and use of passenger demand forecasting to test European policy targets Open
High-speed rail (HSR) is regarded as an important element in the transformation of long-distance transportation towards a climate-friendly system with less road and air travel. The European Union adopted the Green Deal which sets specific …
View article: Phosphorus management strategies for corn and soybean in the Upper US Midwest
Phosphorus management strategies for corn and soybean in the Upper US Midwest Open
It has been questioned whether the sufficient phosphorus (P)management approach could maximize potential grain yield in today's agricultural systems. The objective of this research was to establish six long‐term experiments across Minnesot…
View article: Changes in soil test phosphorus and soil cations following application of sewage sludge ash and other recycled phosphorus fertilizers
Changes in soil test phosphorus and soil cations following application of sewage sludge ash and other recycled phosphorus fertilizers Open
Phosphorus (P) is essential to healthy plant development and is regularly applied in agronomic settings to ensure maximum crop yields. Sewage sludge incinerator ash (SSA) contains significant amounts of P and was investigated as a recycled…
View article: Models and sufficiency interpretation for estimating critical soil test values for the Fertilizer Recommendation Support Tool
Models and sufficiency interpretation for estimating critical soil test values for the Fertilizer Recommendation Support Tool Open
Soil test correlation determines whether a soil test can be used to predict the need for fertilization based on the critical soil test value (CSTV). Our objectives were to compare the CSTV estimated from five combinations of correlation mo…
View article: Soil phosphorus balance in Minnesota soils and its effects on soil test phosphorus and soil phosphorus fractions
Soil phosphorus balance in Minnesota soils and its effects on soil test phosphorus and soil phosphorus fractions Open
Phosphorus (P) fertilizer recommendations based on the build and maintain (B&M) or the sufficiency philosophies were compared at six sites across Minnesota. Various levels of soil test P (STP) levels were established over four growing seas…
View article: Influence of potassium fertilization on alfalfa leaf and stem yield, forage quality, nutrient removal, and plant health
Influence of potassium fertilization on alfalfa leaf and stem yield, forage quality, nutrient removal, and plant health Open
Potassium (K) is an essential nutrient for plant growth. In K‐deficient soils, fertilization has been shown to increase herbage yield of alfalfa. The purpose of this study was to determine the effects of K fertilization on alfalfa leaf and…
View article: Influence of soil test phosphorus level and leaching volume on phosphorus leaching
Influence of soil test phosphorus level and leaching volume on phosphorus leaching Open
Phosphorus (P) is an essential nutrient in agricultural production, yet its losses contribute to eutrophication in freshwater systems. To mitigate this, there is increasing interest in quantifying soluble P leaching losses and including th…
View article: Comparative Study of the Tempering Behavior of Different Martensitic Steels by Means of In-Situ Diffractometry and Dilatometry
Comparative Study of the Tempering Behavior of Different Martensitic Steels by Means of In-Situ Diffractometry and Dilatometry Open
Martensitic steels are tempered to increase the toughness of the metastable martensite, which is brittle in the as-quenched state, and to achieve a more stable microstructure. During the tempering of steels, several particular overlapping …
View article: Soil sample timing, nitrogen fertilization, and incubation length influence anaerobic potentially mineralizable nitrogen
Soil sample timing, nitrogen fertilization, and incubation length influence anaerobic potentially mineralizable nitrogen Open
Understanding the variables that affect the anaerobic potentially mineralizable N (PMN an ) test should lead to a standard procedure of sample collection and incubation length, improving PMN an as a tool in corn ( Zea mays L.) N management…
View article: Predicting Economic Optimal Nitrogen Rate with the Anaerobic Potentially Mineralizable Nitrogen Test
Predicting Economic Optimal Nitrogen Rate with the Anaerobic Potentially Mineralizable Nitrogen Test Open
Estimates of mineralizable N with the anaerobic potentially mineralizable N (PMN an ) test could improve predictions of corn ( Zea mays L.) economic optimal N rate (EONR). A study across eight US midwestern states was conducted to quantify…
View article: United States Midwest Soil and Weather Conditions Influence Anaerobic Potentially Mineralizable Nitrogen
United States Midwest Soil and Weather Conditions Influence Anaerobic Potentially Mineralizable Nitrogen Open
Nitrogen provided to crops through mineralization is an important factor in N management guidelines. Understanding of the interactive effects of soil and weather conditions on N mineralization needs to be improved. Relationships between an…
View article: Soil Texture and Precipitation Influence Optimal Time of Nitrogen Fertilization for Corn
Soil Texture and Precipitation Influence Optimal Time of Nitrogen Fertilization for Corn Open
Core Ideas Soil texture and precipitation largely impact split fertilizer application efficacy. Split fertilizer application consistently increased grain yield in irrigated sands. In fine‐texture and well distributed rain, split applicatio…
View article: Transgenic Corn Response to Nitrogen Rates under Corn Rootworm Pressure
Transgenic Corn Response to Nitrogen Rates under Corn Rootworm Pressure Open
Core Ideas Bacillus thuringiensis rootworm traits and corn rootworm feeding affected N uptake and root mass. N uptake by DK44‐61 SSX at V6 lagged DK46‐60 VT3 and DK 44‐92 RR2. DK44‐92 RR2 had a larger root system at V6 than either DK46‐60 …
View article: Micronutrients for Soybean Production in the North Central Region
Micronutrients for Soybean Production in the North Central Region Open
Micronutrients are essential plant nutrients that are utilized by crops in very small amounts. A micronutrient deficiency can have a large impact on crop yield because it contributes to critical physiological processes. Elements considered…