Publications by authors named "Gregg A. Johnson"
The incorporation of cover crops into the maize (Zea mays L.)-soybean [Glycine max (L.) Merr.
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- - The concept that noncrop habitats can improve pest control while supporting biodiversity has gained traction, but the results are inconsistent across different studies.
- - An analysis of 132 studies showed that while landscape composition often influenced pest and natural enemy populations, the outcomes varied significantly, leading to no definitive improvement in overall pest management.
- - The findings suggest that noncrop habitats do not uniformly enhance pest control, indicating a need for better guidelines to help farmers understand when habitat conservation will actually benefit crop yields.
Historically, agroecosystems have been designed to produce food. Modern societies now demand more from food systems-not only food, fuel, and fiber, but also a variety of ecosystem services. And although today's farming practices are producing unprecedented yields, they are also contributing to ecosystem problems such as soil erosion, greenhouse gas emissions, and water pollution.
View Article and Find Full Text PDFModeling of longitudinal data from agricultural experiments using growth curves helps understand conditions conducive or unconducive to crop growth. Recent advances in Geographical Information Systems (GIS) now allow geocoding of agricultural data that help understand spatial patterns. A particularly common problem is capturing spatial variation in growth patterns over the entire experimental domain.
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- The field of chaotic synchronization has expanded since 1990, giving rise to new subdisciplines and applications.
- The paper reviews the fundamentals of chaotic synchronization, focusing on geometry, stability criteria, and various coupling configurations with examples from chaotic circuits.
- It discusses advancements like synchronous substitution for synchronizing hyperchaotic systems, secure communication proposals, the complexities of coupled system arrays, and provides a framework for analyzing stability and generalized synchronization.