Results 91 to 100 of about 127,737 (232)
The depth and breadth of capitalism at the Cape
The Economic History Review, EarlyView.Abstract Limited liability company legislation was introduced to the Cape Colony in 1861. An amendment in 1892 led to wider adoption, expanding and diversifying the capital market. Using novel data from the Cape Joint Stock Archive between 1892 and 1902, this paper examines who invested, where capital flowed, and how these patterns shaped firm outcomes
Edward Kerby, Lloyd Melusi Maphosa
wiley +1 more source
Cereal Grasses – Host of Leaf Aphids in Boundary of Biological Field
Растениевъдни науки, 2013 The study was conducted in the spring of 2008 and 2009 in biological field of Institute of agriculture – Karnobat. In cereal crops and boundary around them in the spring, in conditions of organic farming are established to harm four types of leaf aphids
Vasilina Maneva, Dina Atanasova
doaj
An effective molecular approach for assessing cereal aphid-parasitoid-endosymbiont networks
Scientific Reports, 2017 Molecular approaches are increasingly being used to analyse host-parasitoid food webs as they overcome several hurdles inherent to conventional approaches.
Zhengpei Ye +5 more
doaj +1 more source
Journal of Applied Entomology, EarlyView.ABSTRACT The pest status of pea aphid (Acyrthosiphum pisum H.) in faba bean (Vicia faba L.) cultivation has gained importance because it transmits Pea necrotic yellow dwarf virus (PNYDV), a novel nanovirus in Europe. This study evaluated two faba bean varieties, ‘Fuego’ and ‘GL Sunrise’, grown under sole crop (SC) and intercrop (IC) conditions with oat
Ahmed Berawe +3 more
wiley +1 more source
Journal of Applied Entomology, EarlyView.ABSTRACT Methyl salicylate (MeSA) is an herbivore‐induced plant volatile (HIPV) known to attract natural enemies of herbivores; however, its effectiveness as a semiochemical across diverse cropping systems and broad geographic regions remains unclear. In this 2‐year field study, we sampled natural enemies using MeSA‐baited and unbaited (control) yellow
Yahel Ben‐Zvi +20 more
wiley +1 more source
Not All Field Margins Are Equally Useful: Effects of the Vegetation Structure of Margins on Cereal Aphids and Their Natural Enemies. [PDF]
Insects, 2023 Salat-Moltó A +6 more
europepmc +1 more source
Drought stress and cereal aphid performance
Annals of Applied Biology, 1995 SummaryThe performance of clones of Rhopalosiphum padi and Sitobion avenae from England and Spain was examined on drought‐stressed tillering winter wheat in an environment chamber at 14 ± 1°C. Two different levels of drought stress and an unstressed control were established by different watering regimes which resulted in drought‐stressed plants being ...
Pons, X., Tatchell, G. M.
openaire +1 more source
Plant Breeding, EarlyView.ABSTRACT Global food demand is predicted to rise anywhere from 59% to 98% by 2050 because of increasing population. However, the continued depletion of natural resources and increasing biotic and abiotic stresses will continue to pose significant threats to global food security in coming years.
Memoona Khalid +5 more
wiley +1 more source
, 1987 A general description of aphids and their life cycle is supplemented by color diagrams. Color photographs of six common cereal aphids (Rhopalosiphum padi, Rhopalosiphum maidis, Sitobion avenae, Schizaphis graminum, Metopolophium dirhodum, and Diuraphis ...
core
, 2017 International audienceWheat is a major crop and plays a significant role in food security in China. Cereal aphids Rhopalosiphum padi L. and Sitobion avenae Fab.
Peng Han +13 more
core +1 more source