Results 21 to 30 of about 164,611 (306)

Weed detection using unmanned aircraft vehicles [PDF]

open access: yes, 2014
In contrast to agricultural remote sensing technologies, which are based on images from satellites or manned aircrafts, photogrammetry at low altitude from unmanned aircraft vehicles lead to higher spatial resolution, real-time processing and lower costs.
Feistkorn, Dominik   +3 more
core   +1 more source

Procedures of image analysis for weed recognition in cereals [PDF]

open access: yes, 2012
An automatic weed recognition system is a prerequisite for site specific weed control when using weed threshold concepts. Segmentation, a preprocessing step, is applied to two- or three-dimensional images. In the following step, methods of graph matching,
Kluge, Alexander, Nordmeyer, Henning
core   +1 more source

Evaluating the allelopathic potentiality of seed powder of two Brassicaceae plants in controlling Orobanche ramosa parasitizing Lycopersicon esculentum Mill. plants

open access: yesBulletin of the National Research Centre, 2019
Background Orobanche ramosa (Broomrape) is an obligate root parasite belonging to Orobanchaceae. It causes a great damage to tomato plants. Several attempts have been done in order to control this parasitic weed.
Raafat Ragheb El-Masry   +4 more
doaj   +1 more source

The Loco-Weed [PDF]

open access: yesScience, 1894
n ...
Parker, W. T., Mass, G.
openaire   +2 more sources

Occurrence pattern and morphological polymorphism of Chinese weedy rice

open access: yesJournal of Integrative Agriculture, 2023
Rice, the main food crop in China, has been sporadically reported to suffer from weedy rice infestation. However, the overall occurrence and distribution pattern of Chinese weedy rice remains unclear because a systematic survey has not been conducted. In
Hao-quan WANG   +8 more
doaj   +1 more source

The dual allelopathic capacity of two Brassicaceae plants’ seed powder in controlling Orobanche crenata infesting Pisum sativum as well as stimulating its growth and yield

open access: yesBulletin of the National Research Centre, 2020
Background It is well known that legume and other crops such as pea, faba bean, lentil, chick pea, and several other crops are susceptible to Orobanche crenata (broomrape) infestation. There is a direct relationship between O.
Salah El-Din Abd El-Ghany Ahmed   +3 more
doaj   +1 more source

A Measurement System for On-line Estimation of Weed Coverage [PDF]

open access: yes, 1998
This paper describes two different solutions for the estimation of weed coverage. Both measuring systems discriminate the weed from the ground by means of the color difference between the weed and ground and can be used to on-line control tractor ...
Parvis, Marco   +3 more
core   +1 more source

Polyphenol‐Inspired Materials for Agricultural Applications

open access: yesAdvanced Materials, EarlyView.
This review outlines the use of polyphenol‐inspired materials for sustainable agriculture, highlighting their molecular design, interfacial assembly, structure–property relationships, and prospects toward precision agriculture, climate resilience, ecosystem protection, and circular bioeconomy strategies.
Haofu Liu   +8 more
wiley   +1 more source

Underground Signals: The Ecological Power of Root Volatiles

open access: yesAdvanced Science, EarlyView.
Root volatiles mediate rhizosphere chemical communication, shaping interactions among plants, microbes, herbivores, and natural enemies. Their production, transport, and perception underpin ecological adaptation, multitrophic interactions, and plant resilience, offering opportunities for sustainable crop protection, resilient agroecosystems, and ...
Xueyao Cao   +31 more
wiley   +1 more source

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