Belachew Asalf Tadesse
Forsker
(+47) 934 79 432
belachew.asalf.tadesse@nibio.no
Sted
Ås - Bygg H7
Besøksadresse
Høgskoleveien 7, 1433 Ås
Biografi
Belachew Asalf, opprinnelige kommer fra Etiopia. Jeg tok BSc. i hagebruk i 2004 fra jimma universitet i Etiopia. I 2005, fikk jeg stipendiat fra NORAD til å studere master grad Norge. I 2007, tok jeg master grad i plantvitenskap fra Norges miljø- og biovitenskapelige universitet (NMBU), og i januar 2013, tok jeg doktorgrad innen plantepatologi ved NMBU. Jeg også jobbet som post doktor fra 2014-2016 i NIBIO. Jeg jobbet som utvekslingsforsker i Cornell Universitet i USA i 2010. Jeg har jobbet på flere prosjekter i NIBIO (tidligere, Bioforsk) og involvert i undervisning av plant patologi og veideling av MSc. og PhD studenter siden 2008.
Jeg er forsker i plantepatologi i divisjon for bioteknologi og plante helse i NIBIO. Jeg er ansvar for sopp- og alge-sjukdommer for felt grønnsaker som dyrkes i Norge (gulrot, hodekål, rosenkål, blomkål, brokkoli, kinakål, kålrot, nepe, grønnkål, reddik, sukkerert, Bønne, frilandsagurk, squash, gresskar, pastinakk, persillerot, bladpersille, stangselleri, knollselleri, salat, ruccola, spinat, rødbete, sukkermais, løk, purre, vårløk, hvitløk, gressløk, asparges, dill, og så videre) og lagrings sjukdommer av grønnsakene.
Mitt forsøks område er diagnostikk, biologi, økologi, epidemiologi, varsling, integrert plantevern, fungicid resistans, og finne alternative bekjempelse av sopp sjukdommer. Jeg har jobbet på flere prosjekter ofte med rollen som forsker, prosjektleder eller arbeidspakkeleder.
Forfattere
Desalegn Chala Diress Tsegaye Alemu Habtamu Alem Belachew Asalf Tadesse Melesse Eshetu_Moges Nega Tassie Abate Ayalew Wondie Aklilu Tilahun Tadesse Abebayehu Aticho Alemu Gonsamo Lanhui Wang Erick Lundgren Jeffrey Kerby Jens Christian SvenningSammendrag
Abstract Water hyacinth is among the world’s most damaging aquatic invasive plants, forming dense mats that disrupt ecosystem functioning, fisheries, navigation, and livelihoods across tropical and subtropical freshwater systems. Its rapid spread is driven by clonal propagation, short life cycles, and prolific seed production, particularly under nutrient-enriched conditions. Although mechanical, chemical, and biological control methods are widely applied, their long-term effectiveness remains uncertain when underlying eutrophication persists. Here, we present a large-scale, one-time water hyacinth removal campaign in Lake Tana, Ethiopia’s largest lake and a UNESCO Biosphere Reserve, as a representative nutrient-rich tropical freshwater system. Using high-resolution satellite imagery, we quantified coverage one month before removal, one month after removal, and one year later. We integrated SWOT (Strengths, Weaknesses, Opportunities, Threats) analysis with a socio-ecological system map to assess mitigation mechanisms and identify sustainable management pathways capable of providing long-term solutions to halt water hyacinth proliferation in freshwater bodies. The campaign removed over 75% (~1271 ha) of water hyacinth, yet within one year the plant resurged to levels ~18% higher than pre-removal. This rebound highlights the ecological resilience of water hyacinth and the limitations of short term, noncontinuous control strategies. Our analysis identifies unmanaged catchment nutrient inputs as the primary driver of proliferation. Lake Tana serves as a model system demonstrating that water hyacinth functions less as a traditional invader and more as a bioindicator of eutrophication. We propose a transferable conceptual and methodological framework combining continuous removal, catchment-based nutrient management, and circular bioeconomy approaches, offering globally relevant lessons for sustainable management of nutrient-enriched tropical freshwater systems.
Forfattere
Belachew Asalf TadesseSammendrag
Det er ikke registrert sammendrag
Forfattere
Belachew Asalf TadesseSammendrag
Det er ikke registrert sammendrag
Divisjon for bioteknologi og plantehelse
Strategies and methods to manage major pests and diseases of onion (‘QualityOnion’)
Onion fly and Fusarium basal rot represent major threats for sustainable Norwegian onion production. There are substantial gaps in our knowledge regarding these pests such as which Fusarium species infect onions in Norway, what are the main sources of Fusarium inoculum, and how onion fly prevalence is changing through the growing season.
Divisjon for bioteknologi og plantehelse
Cropdrive
Cropdrive aims to identify a selection of cover crops suitable for use in root vegetable and potato production with beneficial impacts on both soil and plant health, and greenhouse gas exchange.