Results 11 to 20 of about 319,886 (311)

Hyperspectral Inversion Model of Chlorophyll Content in Peanut Leaves

Applied Sciences, 2020
The purpose of this study is to determine a method for quickly and accurately estimating the chlorophyll content of peanut plants at different plant densities.
Haixia Qi, Bingyu Zhu, Lingxi Kong, Weiguang Yang, Jun Zou, Yubin Lan, Lei Zhang   +6 more
doaj   +1 more source

Insecticide resistance status of the malaria mosquitoes: Anopheles gambiae and Anopheles funestus in eastern and northern Uganda

Malaria Journal, 2018
Background Uganda’s malaria burden includes the sixth highest number of annual deaths in Africa (10,500) with approximately 16 million cases (2013) and the entire population at risk.
Michael Okia, David F. Hoel, James Kirunda, John Bosco Rwakimari, Betty Mpeka, Denis Ambayo, Ananya Price, David W. Oguttu, Albert P. Okui, John Govere   +9 more
doaj   +1 more source

Design and Experiment of a Variable Spray System for Unmanned Aerial Vehicles Based on PID and PWM Control

Applied Sciences, 2018
Unmanned aerial vehicle (UAV) variable-rate spraying technology, as the development direction of aviation for plant protection in the future, has been developed rapidly in recent years.
Sheng Wen, Quanyong Zhang, Jizhong Deng, Yubin Lan, Xuanchun Yin, Jian Shan   +5 more
doaj   +1 more source

Evaluation of laser range-finder mapping for agricultural spraying vehicles [PDF]

, 2013
In this paper, we present a new application of laser range-finder sensing to agricultural spraying vehicles. The current generation of spraying vehicles use automatic controllers to maintain the height of the sprayer booms above the crop. However, these
A Nüchter, AM Endalew, F Rovira-Más, F-A Moreno, H Jeon, J Anthonis, J Wei, M Magnusson, P Walklate, S Pedersen, S Thrun   +10 more
core   +1 more source

The Technical Parameters of Seaweed Biostimulant Spray Application as a Factor in the Economic Viability of Soybean Production

Applied Sciences, 2023
Application of biostimulant in the form of a spraying requires appropriate selection of technical parameters. One of the key factors in ensuring that the liquid is sprayed correctly is the choice of suitable spray nozzles.
Anna Krawczuk, Bruno Huyghebaert, Fabienne Rabier, Stanisław Parafiniuk, Artur Przywara, Milan Koszel, Edmund Lorencowicz, Sławomir Kocira   +7 more
doaj   +1 more source

Gypsy Moth (Lepidoptera: Lymantriidae): History of Eradication Efforts in Michigan, 1954-1981 [PDF]

, 2017
Gypsy moth, Lymantria dispar, was first discovered in Michigan in 1954, Aerial spraying operations were conducted to eradicate gypsy moth infestations with synthetic insecticides (DDT, carbaryl, and diflubenzuron)
Hanna, Murray
core   +2 more sources

A reduction in malaria transmission intensity in Northern Ghana after 7 years of indoor residual spraying

Malaria Journal, 2017
Background Indoor residual spraying (IRS) is being implemented as one of the malaria prevention methods in the Northern Region of Ghana. Changes in longevity, sporozoite and entomological inoculation rates (EIRs) of major malaria vectors were monitored ...
Sylvester Coleman, Samuel K. Dadzie, Aklilu Seyoum, Yemane Yihdego, Peter Mumba, Dereje Dengela, Philip Ricks, Kristen George, Christen Fornadel, Daniel Szumlas, Paul Psychas, Jacob Williams, Maxwell A. Appawu, Daniel A. Boakye   +13 more
doaj   +1 more source

Droplet Deposition and Control of Planthoppers of Different Nozzles in Two-Stage Rice with a Quadrotor Unmanned Aerial Vehicle

Agronomy, 2020
Previous studies have confirmed that choosing nozzles that produce coarser droplets could reduce the risk of pesticide spray drift, but this conclusion is based on a large volume of application, and it is easy to ignore how this impacts the control ...
Pengchao Chen, Yubin Lan, Xiaoyu Huang, Haixia Qi, Guobin Wang, Juan Wang, Linlin Wang, Hanxiang Xiao   +7 more
doaj   +1 more source

Research into the process of spraying complex titanium and zirconium nitride on structural steel and reaction times relating to the final finish and quality obtained

Budownictwo o Zoptymalizowanym Potencjale Energetycznym, 2021
This article presents a literature review into the current state of the theory and practice of spraying complex titanium and zirconium nitride on steel P6M5, as well as a study of the effect of spraying time on the structural and mechanical ...
Olena Gumen, Adam Ujma, Mariia Kruzhkova
doaj   +1 more source

To spray or not to spray?

ASCILITE Publications, 2009
A scenario-based exercise was developed to expose third-year degree-level horticultural students to the complexities of modern orchard pest and disease management. Using scenarios developed and presented with the e-learning tool SBL Interactive, students are required to analyze four successive scenarios set at different growth stages in the crop, and ...
Terry M. Stewart, Mark E. Brown
openaire   +1 more source