A5048848718- Soil Carbon and Nitrogen Dynamics
- Agronomic Practices and Intercropping Systems
- Soil and Water Nutrient Dynamics
- Legume Nitrogen Fixing Symbiosis
- Crop Yield and Soil Fertility
- Soil and Unsaturated Flow
- Genetic and Environmental Crop Studies
- Bioenergy crop production and management
- Hydrology and Watershed Management Studies
- Lipid metabolism and biosynthesis
- Groundwater and Isotope Geochemistry
- Turfgrass Adaptation and Management
- Ruminant Nutrition and Digestive Physiology
- Irrigation Practices and Water Management
- Soil erosion and sediment transport
- Genetics and Plant Breeding
- Agriculture, Soil, Plant Science
- Rice Cultivation and Yield Improvement
- Sunflower and Safflower Cultivation
- Plant nutrient uptake and metabolism
- Advanced Thermodynamic Systems and Engines
- Peatlands and Wetlands Ecology
- Plant Pathogens and Fungal Diseases
- Microbial Community Ecology and Physiology
- Pasture and Agricultural Systems
Montana State University
2011-2024
University of Pennsylvania
2024
Montana State University System
2022
Agricultural Research Center
2019
University of Georgia
1995-2007
Kansas State University
2004-2006
University of Missouri
1989
Abstract Winter legume cover crops have been shown to provide significant amounts of N subsequent nonleguminous crops, but benefits beyond those directly attributed are rarely cited. A 3 yr field study at two Georgia locations utilizing a randomized, complete‐block, split‐plot design with four replications was begun in 1985 measure the equivalent fertilizer supplied by winter annual legumes and monitor changes soil physical chemical properties. Corn, Zea mays L. grown on Rome gravelly clay...
Five long‐term tillage studies in Kansas were evaluated for changes soil properties including organic carbon (SOC), water holding capacity (WHC), bulk density, and aggregate stability. The average length of time these have been conducted was 23 yr. Soil characterized three depth increments to 30 cm, yet due tillage, N fertility, or crop rotation found primarily the upper 0‐ 5‐cm depth. Decreased intensity, increased fertilization, rotations that included cereal crops had greater SOC Only one...
Poor stands of camelina [ Camelina sativa (L.) Crantz., Brassicaceae] usually result from poor seedbed conditions or unfavorable environmental conditions. A 2‐yr field study was conducted under dryland near Huntley, MT to evaluate the effects stand reduction at rosette and bolting growth stages on grain yield quality determine if has compensatory ability for after a loss. exhibited tremendous maintain across wide range plant populations. Stand up 50% either stage had no effect over 2 yr. 90%...
Abstract Chickpea provides significant diversification benefits for semi-arid cropping systems. However, their slow emergence and open canopy growth habit make them poor competitors against rapidly growing weeds during the early season. In 2022 2023, field experiments were conducted at two sites, Montana State University (MSU) Southern Agricultural Research Center, Huntley, MT, MSU Post Agronomy Farm, Bozeman, to evaluate broadleaf weed management by integrating planting date fall-applied...
Core Ideas Multi species cover crops provided more stable biomass yield than single species. Grass components of crop mixtures were productive legume components. Cover did not use water or nitrogen differently crops. Warm and cool season within a functional group complemented each other. Relative LER was useful criteria to select for mixture construction. Mixed are relatively recent management method improving soil health cropping system sustainability. This 2‐yr study assessed the...
Abstract: The pollutant reduction possible with a given agricultural best‐management practice (BMP) is complex and site‐specific. Water‐quality models can evaluate BMPs, but model results are often limited by the lack of calibrated parameters for BMP. This study runoff prediction two (ADAPT SWAT) individual field plots having one till no‐till management practices. factors used calibration were curve number II (CN ) saturated hydraulic conductivity (Ksat) ADAPT, CN , Ksat, available water...
Abstract Fertilizer N recommendations are often increased for no‐till corn ( Zea mays L.) relative to conventionally tilled corn. A comparison of yield responses fertilizer is lacking continuous and following soybean [ Glycine max (L.) Merr.] when grown with conventional no‐tillage systems on poorly drained claypan soils. Field studies spanning 5 site‐years were conducted somewhat (Udollic Ochraqualf) (Mollic Albaqualf) soils in central northeast Missouri. The experimental design was a...
Rapid development of the Montana pulse crop industry has created a strong demand for breeding efforts and cultivar recommendations. We evaluated adaptation yield stability diversely sourced dry pea ( Pisum sativum L.) lentil Lens culinaris Medik.) genotypes across from 2009 to 2011. Mega‐environments in superior were identified using additive main effect multiplicative interaction (AMMI) methodology. Grain both crops varied among locations years. A large portion total variation (genotype [G]...
Abstract Fertilizing no‐till corn ( Zea mays L.) with urea‐based N sources requires managing for losses such as immobilization and NH 3 volatilization. In this study the interactive effects of fertilizer application time placement method were evaluated by applying urea ammonium nitrate (UAN) solution to corn. Eight site‐years data collected from sites in central, northeast, northwest Missouri on Ochraqualf, Albaqualf, Udifluvent soils, respectively. Experimental design was a complete...
Dry pea (Pisum sativum L.) is an important crop in the Northern Great Plains of USA and Canada. Information on dry quality as affected by cultivars environments limited. This experiment determined effects protein, starch, ash concentrations. Six (‘Arcadia’, ‘Bridger’, ‘CDC Striker’, ‘Cruiser’, ‘Montech 4152’, ‘SW Midas’) were evaluated a randomized complete block design with four replications 22 environments. The results showed that cultivar × environment interaction highly significant...
Abstract Ascochyta blight (caused by rabiei ) is a primary concern of chickpea production worldwide. Intercropping with non‐host crop has the potential to suppress this disease and improve resource use efficiency for enhanced yield. This study aimed evaluate effects seeding rate row configuration ( Cicer arietinum L.)–flax Linum usitatissimum L) intercropping on (1) yield seed quality, (2) incidence severity chickpea, (3) land productivity system. Field trials were conducted at Eastern...
Strip tillage has gained adoption in recent years with the availability of improved equipment that can prepare a seedbed and place fertilizer one pass. Nitrogen management, including optimal N rates placement, is an important concern for sugar beet ( Beta vulgaris L.) growers. A 2‐yr study was conducted at Huntley, MT, under flood sprinkler irrigation to determine if should be adjusted different systems, placement root yield quality. Three treatments were compared: conventional broadcast...
Abstract Rotating summer fallow with wheat ( Triticum spp.) is done in dryland grain farming at upper latitudes to stabilize yields over time and prevent crop failure. However, costly since weeds must be controlled crops are not grown. Replacing can generate low economic returns. Previous research indicated that annual cool‐season forages substituted for cropping systems. Our objective was determine if warm‐season species were suited forage production monocultures polycultures the U.S....
Abstract Studies evaluating surface broadcast urea‐based N sources in no‐till corn ( Zea mays L.) have been primarily conducted with continuous corn. Most grown Missouri follows soybean [ Glycine max (L.) Merr.]. Our objective was to evaluate no‐till, and following response applied ammonium nitrate (AN) sources. Field studies were at three sites during 1988–1990. Factorial combinations of rotation (continuous corn‐soybean) source [AN, urea, urea (UAN), UAN + thiosulfate (UAN ATS)], rate (67,...
Annual forages are a good option for many farmers and ranchers in the Northern Great Plains, particularly when traditional forage sources short supply. Not only do they provide increased production per acre compared with perennial forages, but also quality source livestock. While there potential nutritional benefits to be gained by including non‐traditional species mix, nitrates other toxins need considered. Earn 0.5 CEUs Crop Management reading this article taking quiz at...
Many studies have shown that subsoils in the Piedmont region of southeastern USA anion exchange capacity (AEC) and can adsorb anions such as nitrate NO − 3 Groundwater discharging to wells streams often passes through thick layers saprolite beneath soils, but little is known about AEC saprolite. Our objective was determine on samples collected with a split‐spoon sampler during installation seven groundwater monitoring north Georgia. Forty four were from depths ranging approximately one 15 m...
Abstract Soil acidification, a common issue in high‐rainfall areas of the U.S. and Canada, has become more prevalent problem semi‐arid western Liming is an effective way to mitigate soil acidity as carbonate reacts with hydrogen ions solution increase pH. However, questions exist about type liming product, lime rate, cost effectiveness, how long benefits last, especially regions that have historically not needed lime, like much Great Plains. Earn 0.5 CEUs & Water Management by reading...