Robert P. Larkin
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View article: Evaluation of Biochar and Humus Amendments and Early-Season Insect Netting on Soil Properties, Crop Yield, and Pest Management in Organic Vegetable Production in Maine
Evaluation of Biochar and Humus Amendments and Early-Season Insect Netting on Soil Properties, Crop Yield, and Pest Management in Organic Vegetable Production in Maine Open
Effective implementation and optimization of organic amendments and other management practices is essential for sustainable organic vegetable production, yet needed information is lacking on the effects and benefits of different organic ma…
View article: Short-term management impacts to soil properties and potato yield in Maine potato production
Short-term management impacts to soil properties and potato yield in Maine potato production Open
Background and Aims Improved soil health can enhance plant resilience against diseases, boost nutritional fertility, prevent erosion, and improve crop yields. However, certain agricultural practices can negatively impact soil health, as ob…
View article: Management Impacts to Soil Microbial Communities in Maine Potato Production
Management Impacts to Soil Microbial Communities in Maine Potato Production Open
Potato crop management can have substantial impacts on soil health, particularly through practices such as intensive tillage and short crop rotations. This study investigated the impacts of different management practices on soil microbial …
View article: Potato Cropping System and Variety Impacts on Soil Properties, Soilborne Diseases, and Tuber Yield in a Long-Term Field Trial
Potato Cropping System and Variety Impacts on Soil Properties, Soilborne Diseases, and Tuber Yield in a Long-Term Field Trial Open
Cropping systems incorporating soil health management practices such as longer rotations, cover crops and green manures, and organic amendments have been shown to improve soil and crop health. However, long-term trials are needed to fully …
View article: Effects of Different Cover Crops and Amendments on Soil and Crop Properties in Organic Vegetable Production
Effects of Different Cover Crops and Amendments on Soil and Crop Properties in Organic Vegetable Production Open
The impacts of two different cover crop (CC) strategies, as well as compost, silicon (Si), and biocontrol (BC) soil amendments were evaluated on soil chemical and biological properties, crop development and yield, and disease and pest issu…
View article: Potato Soil Core Microbiomes Are Regionally Variable Across the Continental United States
Potato Soil Core Microbiomes Are Regionally Variable Across the Continental United States Open
Soil microbiomes play crucial roles in pathogen suppression, nutrient mobilization, and maintenance of plant health. Their complexity and variability across spatial and temporal scales provide challenges for identifying common targets—micr…
View article: Editorial:Ecological intensification and sustainable intensification: increasing benefits to and reducing impacts on the environment to improve future agricultural and food systems
Editorial:Ecological intensification and sustainable intensification: increasing benefits to and reducing impacts on the environment to improve future agricultural and food systems Open
EDITORIAL article Front. Environ. Sci., 12 October 2023Sec. Land Use Dynamics Volume 11 - 2023 | https://doi.org/10.3389/fenvs.2023.1301995
View article: Long-Term Effects of Compost Amendments and Brassica Green Manures in Potato Cropping Systems on Soil and Crop Health and Productivity
Long-Term Effects of Compost Amendments and Brassica Green Manures in Potato Cropping Systems on Soil and Crop Health and Productivity Open
Beneficial soil and crop management practices, such as longer rotations, cover crops and green manures, organic amendments, and reduced tillage, may improve soil and crop health and productivity when incorporated into cropping systems. Lon…
View article: Use of Crop Rotations, Cover Crops and Green Manures for Disease Suppression in Potato Cropping Systems
Use of Crop Rotations, Cover Crops and Green Manures for Disease Suppression in Potato Cropping Systems Open
Crop rotations and the inclusion of cover crops and green manures are primary tools in the sustainable management of soil-borne diseases in crop production systems. Crop rotations can reduce soil-borne disease through three general mechani…
View article: Long‐term development of species richness in a central European beech (<i>Fagus sylvatica</i>) forest affected by windthrow—Support for the intermediate disturbance hypothesis?
Long‐term development of species richness in a central European beech (<i>Fagus sylvatica</i>) forest affected by windthrow—Support for the intermediate disturbance hypothesis? Open
On the basis of long‐term surveys of permanent plots and traps, we examined the communities of saproxylic beetles, fungi, herbs, and trees on an untreated 22 ha large beech forest windthrow and asked whether the results lend support to the…
View article: Species of Dickeya and Pectobacterium Isolated during an Outbreak of Blackleg and Soft Rot of Potato in Northeastern and North Central United States
Species of Dickeya and Pectobacterium Isolated during an Outbreak of Blackleg and Soft Rot of Potato in Northeastern and North Central United States Open
An outbreak of bacterial soft rot and blackleg of potato has occurred since 2014 with the epicenter being in the northeastern region of the United States. Multiple species of Pectobacterium and Dickeya are causal agents, resulting in losse…
View article: Interaction between Dickeya dianthicola and Pectobacterium parmentieri in Potato Infection under Field Conditions
Interaction between Dickeya dianthicola and Pectobacterium parmentieri in Potato Infection under Field Conditions Open
Dickeya and Pectobacterium spp. both cause blackleg and soft rot of potato, which can be a yield-reducing factor to potato production. The purpose of this study was to examine the interaction between these two bacterial genera causing pota…
View article: Potato Growth and Yield Characteristics under Different Cropping System Management Strategies in Northeastern U.S.
Potato Growth and Yield Characteristics under Different Cropping System Management Strategies in Northeastern U.S. Open
Cropping systems and management practices that improve soil health may greatly enhance crop productivity. Four different potato cropping systems designed to address specific management goals of soil conservation (SC), soil improvement (SI)…
View article: Effects of Selected Soil Amendments and Mulch Type on Soil Properties and Productivity in Organic Vegetable Production
Effects of Selected Soil Amendments and Mulch Type on Soil Properties and Productivity in Organic Vegetable Production Open
The potential benefits of different types of soil amendments and mulch ground covers on soil chemical and biological properties, crop development and yield, and disease and pest issues in organic vegetable production, as represented by leg…
View article: Effects of Crop Rotation and Biocontrol Amendments on Rhizoctonia Disease of Potato and Soil Microbial Communities
Effects of Crop Rotation and Biocontrol Amendments on Rhizoctonia Disease of Potato and Soil Microbial Communities Open
Rotation crops and biocontrol amendments were investigated for suppression of Rhizoctonia solani on potato (Solanum tuberosum) and their interactive effects on soil microbial communities. Greenhouse trials were conducted to evaluate select…
View article: Use and Effects of Different Brassica and Other Rotation Crops on Soilborne Diseases and Yield of Potato †
Use and Effects of Different Brassica and Other Rotation Crops on Soilborne Diseases and Yield of Potato † Open
Soilborne diseases are persistent problems in potato production, resulting in reductions in tuber quality and yield. Brassica rotation crops may reduce soilborne potato diseases, but how to best utilize Brassica crops in potato cropping sy…
View article: Cumulative and residual effects of different potato cropping system management strategies on soilborne diseases and soil microbial communities over time
Cumulative and residual effects of different potato cropping system management strategies on soilborne diseases and soil microbial communities over time Open
Soilborne potato diseases and soil microbial community characteristics were evaluated over 8 years in different potato cropping systems designed to address specific management goals of soil conservation, soil improvement and disease suppre…
View article: Quantity and Nature of Water‐Extractable Organic Matter from Sandy Loam Soils with Potato Cropping Management
Quantity and Nature of Water‐Extractable Organic Matter from Sandy Loam Soils with Potato Cropping Management Open
Core Ideas 2‐ and 3‐yr potato crop rotations did not increase the levels of water‐extractable organic matter (OM). Potato crop rotation increased the less humified portions. Irrigation stimulated decomposition of non‐potato crop residues. …
View article: Survival potential of Phytophthora infestans sporangia in relation to environmental factors and late blight occurrence
Survival potential of Phytophthora infestans sporangia in relation to environmental factors and late blight occurrence Open
Potato is an important crop globally and late blight (Phytophthora infestans) often results in severe crop loss. The cost for late blight control can be in excess of $210 million in the United States. We utilised a non-parametric density d…
View article: Incidence of Phytophthora infestans (Mont.) de Bary on potato and tomato in Maine, 2006–2010
Incidence of Phytophthora infestans (Mont.) de Bary on potato and tomato in Maine, 2006–2010 Open
Late blight, caused by Phytophthora infestans (Mont.) de Bary, is a devastating disease which is found worldwide. In Maine, United States (US), we recorded late blight on potato and tomato during the 2006-2009 cropping seasons. From 2006 t…