Results 121 to 130 of about 128,601 (309)

Active Chlorophyll Fluorescence Technologies in Precision Weed Management: Overview and Perspectives

Agriculture
Weeds are among the primary factors that adversely affect crop yields. Chlorophyll fluorescence, as a sensitive indicator of photosynthetic activity in green plants, provides direct insight into photosynthetic efficiency and the functional status of the ...
Jin Hu, Yuwen Xie, Xingyu Ban, Liyuan Zhang, Zhenjiang Zhou, Zhao Zhang, Aichen Wang, Toby Waine   +7 more
doaj   +1 more source

An algorithm for computing chlorophyll-a concentrations using a dual-frequency fluorosensor [PDF]

An algorithm to be used on data from a dual-frequency fluorosensor (i.e. one using two wavelengths for excitation of chlorophyll-a fluorescence) to compute total chlorophyll-a concentration and to partition that chlorophyll between two color groups ...
Campbell, J. W.
core   +1 more source

Some physiological effects of the herbicide bromacil (5-bromo-3-sec-butyl-6-methyluracil) on Asparagus officinalis L. : a thesis presented in partial fulfilment of the requirements for the degree of Master of Science at Massey University [PDF]

, 1985
The root-absorbed, photosynthesis-inhibiting herbicide bromacil (5-bromo-3-sec-butyl-6-methyluracil) was applied in sand culture to tissue-cultured 18-month-old Mary Washington 500W clone of Asparagus officinalis L.
Balasingam, Godwin
core  

Statistical filtering to aid in the sorting of phytoplankton: The effects of image library size and phytoplankton shape

Limnology and Oceanography: Methods, EarlyView.
Abstract The demand for efficient image sorting methods has increased due to technological advancements that enable more intensive phytoplankton monitoring. Both statistical and machine learning algorithms can misidentify algal taxa in taxonomically diverse samples, in which phytoplankton morphology and image traits can vary.
Christopher R. Farrow, Josef D. Ackerman
wiley   +1 more source

Refining techniques for high‐frequency monitoring of chlorophyll a fluorescence in estuarine systems

Limnology and Oceanography: Methods, EarlyView.
Abstract Concentrations of the photosynthetic pigment chlorophyll a are commonly used as a proxy for phytoplankton biomass in aquatic systems. Traditional methods for extracting chlorophyll a in discrete samples limit measurement frequency, while in situ sensor technology provides high frequency chlorophyll a fluorescence measurements at a more ...
Nicole Dix, Hannah Nicklay, Jacob Cianci‐Gaskill, Shannon Dunnigan Kimmel, J. Silas Tanner, Kim Cressman, Steven E. McMurray, Yoshimi M. Rii, Rikke Jeppesen, Rachel Guy, Erik Smith   +10 more
wiley   +1 more source

Seasonal variation of leaf functional traits in sub‐Arctic plants

Oikos, Volume 2026, Issue 6, June 2026.
Leaf functional traits are informative of plant fitness and functions in ecosystems. These functional traits and their variation across geographic extents are much studied but less is known about their temporal variation over a growing season. Here, we provide an analysis of the seasonal variation in six leaf functional traits of 11 sub‐Arctic vascular
Pekka Niittynen, Marija Merkurjeva, Julia Kemppinen   +2 more
wiley   +1 more source

Integrating tunable LED‐induced plant responses with novel solar cell technologies for energy‐efficient agrivoltaic systems

PLANTS, PEOPLE, PLANET, EarlyView.
The increasing demand for sustainable food production requires innovative solutions that balance productivity, resource efficiency, and environmental impact. Vertical Farming Systems (VFSs) offer a promising approach; however, their high energy consumption remains challenging.
Alessio Dessì, Carlo Spampinato, Fabiano Sillo, Salvatore Valastro, Mauro Centritto, Cecilia Brunetti, Andrea Ghirardo, Jörg‐Peter Schnitzler, Alessandra Alberti, Gianna Reginato, Aurora Rizzo, Raffaella Balestrini   +11 more
wiley   +1 more source

Made in the shade: Leaf responses of native wildflowers to single‐axis photovoltaic solar energy

PLANTS, PEOPLE, PLANET, EarlyView.
As solar energy expands globally, balancing renewable power generation with biodiversity and ecosystem health has become an urgent challenge. This study investigated how native wildflowers respond at leaf level to the unique microclimates created by rotating solar panels in California's Central Valley.
Yudi Li, Troy Magney, Alona Armstrong, Rebecca R. Hernandez   +3 more
wiley   +1 more source

Migration of Net Phytoplankton and Zooplankton in Mendum’s Pond, New Hampshire [PDF]

, 2006
The study examines the vertical distribution and migratory behavior of net phytoplankton and zooplankton of Mendum’s Pond in Barrington, N.H. The cyanobacteria, Microcystis and Aphanocapsa were the dominant net phytoplankton in this lake.
Murby, Amanda L.
core   +1 more source

Leaf heat tolerance in a native Californian shrub responds in expected and unexpected ways to differences in range, season, and sunlight exposure

PLANTS, PEOPLE, PLANET, EarlyView.
Earth's ecosystems are experiencing wide‐ranging impacts from global climate change, including increased average and extreme temperatures. These temperature shifts can drastically affect plant physiology, threatening the future of even common plant species. Here, we focus on photosynthetic function in a native Southern California shrub species.
Anna K. M. Bowen, Helen Holmlund, Anna L. Jacobsen, R. Brandon Pratt, Christine Scoffoni, Ishan Ashford, Olivia Plumb, Casey Wisely, Gretchen North   +8 more
wiley   +1 more source