Results 41 to 50 of about 6,166 (173)

Effect of weather parameters on seasonal incidence of pod borer complex in pigeonpea

open access: yesJournal of Agrometeorology, 2017
Field experiments were conducted at CCS Haryana Agricultural University, Hisar during kharif season of 2013 and 2014 to determine the effect of weather parameters on the incidence of pod borer complex on early maturing pigeonpea varieties.
B. L. JAT   +3 more
doaj   +1 more source

The Yield and Pest Trade-Off: An Analysis of Insecticide Spray Frequency on the Performance of a Genetically Modified Cowpea in Ghana

open access: yesAgronomy
A field trial was conducted at two locations in northern Ghana over two successive years to determine the optimal insecticide application timings for mitigating non-lepidopteran pest infestations in a cowpea (Vigna unguiculata (L.) Walp.) variety ...
Jerry A. Nboyine   +9 more
doaj   +1 more source

Field evaluation of extracts of five Nigerian spices for control of post-flowering insect pests of cowpea, Vigna unguiculata (L.) Walp.

open access: yesPlant Protection Science, 2005
The insecticidal efficacy of aqueous extracts of five Nigerian spices (Piper guineense Schum and Thonn., Aframomum melegueta (Roscoe), Xylopia aethiopica (Dunal) A. Rich., Zingiber officinale L. and Capsicum annuum L.) was tested in a field study for the
Alphonsus Mbonu Oparaeke   +2 more
doaj   +1 more source

PIC Simulations of Velocity-Space Instabilities in a Decreasing Magnetic Field: Viscosity and Thermal Conduction [PDF]

open access: yes, 2018
We use particle-in-cell (PIC) simulations of a collisionless, electron-ion plasma with a decreasing background magnetic field, $B$, to study the effect of velocity-space instabilities on the viscous heating and thermal conduction of the plasma.
Quataert, Eliot   +2 more
core   +2 more sources

Collisional thermalization of minor ions in the solar wind

open access: yesFrontiers in Astronomy and Space Sciences
IntroductionAs the solar wind transits through the heliosphere, Coulomb collisions among constituent particles drives it toward local thermodynamic equilibrium. Prior studies of ion collisions in the solar wind have focused on the two most abundant solar
E. Johnson, B. A. Maruca
doaj   +1 more source

An Insight in the Reproductive Biology of Therophilus javanus (Hymenoptera, Braconidae, and Agathidinae), a Potential Biological Control Agent against the Legume Pod Borer (Lepidoptera, Crambidae)

open access: yesPsyche: A Journal of Entomology, 2017
Therophilus javanus is a koinobiont, solitary larval endoparasitoid currently being considered as a biological control agent against the pod borer Maruca vitrata, a devastating cowpea pest causing 20–80% crop losses in West Africa.
Djibril Aboubakar Souna   +6 more
doaj   +1 more source

Uji Efektivitas Insektisida terhadap Hama Maruca Testulalis pada Bibit Malapari (Pongamia Pinnata (L.) Pierre) [PDF]

open access: yes, 2017
Maruca testulalis is one of pest on leaves of Pongamia pinnata (L.) Pierre. leaf in nursery. The objective of this research was to compare the efficacy of insecticides on larvae population and degrees of damage intensity.
Dendang, B. (Benyamin)   +1 more
core   +2 more sources

Deficiencies in the Risk Assessment of Genetically Engineered Bt Cowpea Approved for Cultivation in Nigeria: A Critical Review

open access: yesPlants, 2022
We analyze the application filed for the marketing and cultivation of genetically engineered Bt cowpea (event AAT 709A) approved in Nigeria in 2019. Cowpea (Vigna ungiguiculata) is extensively grown throughout sub-Saharan Africa and consumed by around ...
Christoph Then   +2 more
doaj   +1 more source

A study on Maruca vitrata infestation of Yard-long beans (Vigna unguiculata subspecies sesquipedalis)

open access: yesHeliyon, 2015
Globally, Maruca vitrata (Geyer) is a serious yield constraint on food legumes including Yard-long bean (Vigna unguiculata subspecies sesquipedalis). However, there is a dearth of information on its damage potential, distribution and population dynamics ...
R.C. Jayasinghe   +2 more
doaj   +1 more source

Scientific innovation for the sustainable development of African agriculture [PDF]

open access: yes, 2019
The African continent has considerable potential to reap the benefits associated with modern agricultural biotechnology. Plant biotechnology and breeding represent an invaluable toolbox to face the challenges of African agriculture, such as food and ...
De Bauw, Vanessa   +8 more
core   +1 more source

Home - About - Disclaimer - Privacy