Results 11 to 20 of about 15,036 (184)

Detection of multi-tomato leaf diseases (late blight, target and bacterial spots) in different stages by using a spectral-based sensor. [PDF]

open access: yes, 2018
Several diseases have threatened tomato production in Florida, resulting in large losses, especially in fresh markets. In this study, a high-resolution portable spectral sensor was used to investigate the feasibility of detecting multi-diseased tomato ...
de Castro, Ana Isabel   +4 more
core   +2 more sources

Foliar diagnosis as a guide to olive fertilization

open access: yesSpanish Journal of Agricultural Research, 2009
A long term experiment was established in olive orchards of Andalusia, southern Spain, to compare the fertilization practice based on foliar diagnosis versus the current fertilization practice in the area. Only nutrients whose concentration in leaves taken in July were below the critical levels were applied in the former treatment, whereas in the ...
Fernández-Escobar, R.   +3 more
openaire   +4 more sources

Foliar indices for carrot crop using the compositional nutrient diagnosis method1 [PDF]

open access: yesPesquisa Agropecuária Tropical, 2017
ABSTRACT Carrot has a high yield potential, which requires an adequate and adaptable nutritional management, according to the needs and demands of each crop. Foliar diagnosis is a tool for adjustment and constant improvement of crop fertilization programs.
Silva, Frederico Dellano Souza   +4 more
openaire   +2 more sources

Use of consumer-grade cameras to assess wheat N status and grain yield [PDF]

open access: yes, 2019
Relationships between (a) fractional Intercepted PAR (fIPAR), and (b) aboveground biomass (Biomass) and (c) grain yield at harvest with the Normalized Difference Vegetation Index (NDVI) derived either from a spectroradiometer or a conventional camera at ...
Fernández Murcia, Enric   +2 more
core   +4 more sources

A new record of fossil wood of Vochysiaceae from the Upper Pleistocene (Arroyo Feliciano Formation), Argentina, South America [PDF]

open access: yes, 2015
A new species of Qualeoxylon Suguio & Mussa is described from the Late Pleistocene Arroyo Feliciano Formation of the Gualeguay Basin on eastern Argentina.
Brea, Mariana, Moya, Eliana Vanesa
core   +1 more source

Generalist‐pollinated Arabis alpina exhibits floral scent variation at multiple scales

open access: yesNordic Journal of Botany, EarlyView.
Plants that depend on animals for reproduction often use complex floral traits to attract pollinators. Floral scent is recognized as part of the pollinator attraction module and can be shaped by plant‐pollinator interactions. In recent decades, research has started to reveal the dynamic properties of floral scent, identifying patterns of spatial and ...
Hanna Thosteman   +5 more
wiley   +1 more source

Study on the curative and eradicant action of fungicide combinations to control late blight in potato [PDF]

open access: yes, 2005
Commercial fungicide combinations were tested in the field for efficacy on foliar late blight caused by Phytophthora infestans in substitution of tin. When the first disease symptoms appeared, the tested fungicide treatments for late blight control were ...
Haesaert, Geert, Heremans, Betty
core  

Fungal disease management in cotton using plant protection products: An Australian perspective

open access: yesPest Management Science, EarlyView.
Cotton disease management requires evidence‐driven use of plant protection products. Progress hinges on integrating chemistry, diagnostics, stewardship and sustainability to build resilient production systems. Abstract Cotton production faces persistent challenges from pathogens that compromise plant establishment, yield, and fibre quality.
Noel L Knight   +3 more
wiley   +1 more source

Spectral response of guava leaves under infestation by Costalimaita ferruginea (coleoptera: Chrysomelidae)

open access: yesAgricultural and Forest Entomology, EarlyView.
Coccinellidae (Coleoptera), Miridae (Hemiptera), Hemerobiidae (Neuroptera), Pentatomidae (Hemiptera), Anystidae (Acari), Erythraeidae (Acari) and spiders (Araneidae, Oxyopidae and Salticidae) fed on the invasive paropsine leaf beetles in Marlborough, New Zealand.
Souradji I. Bachirou   +2 more
wiley   +1 more source

Chemical control strategies for Poa annua in managed turfgrass systems

open access: yesCrop, Forage &Turfgrass Management, Volume 12, Issue 1, June 2026.
Abstract Poa annua L. is a widespread and persistent weed in managed turfgrass systems, exhibiting both annual and short‐lived perennial growth habits. Effective management requires an integrated approach, with chemical herbicides remaining a primary tool.
James D. McCurdy   +15 more
wiley   +1 more source

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