Hans Werner Koyro

ORCID: 0000-0003-2349-0666
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About
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Research Areas
  • Plant Stress Responses and Tolerance
  • Soil Carbon and Nitrogen Dynamics
  • Seed Germination and Physiology
  • Plant responses to water stress
  • Growth and nutrition in plants
  • Plant nutrient uptake and metabolism
  • Algal biology and biofuel production
  • Composting and Vermicomposting Techniques
  • Thermochemical Biomass Conversion Processes
  • Tree Root and Stability Studies
  • Agricultural Systems and Practices
  • Mycorrhizal Fungi and Plant Interactions
  • Botany, Ecology, and Taxonomy Studies
  • Water Quality Monitoring Technologies
  • Coal and Its By-products
  • Agronomic Practices and Intercropping Systems
  • Polymer-Based Agricultural Enhancements
  • Fish Biology and Ecology Studies
  • Biodiesel Production and Applications
  • Rangeland Management and Livestock Ecology
  • Plant-Microbe Interactions and Immunity
  • Biofuel production and bioconversion
  • Agricultural Science and Fertilization
  • Soil and Land Suitability Analysis
  • Plant Growth Enhancement Techniques

Justus-Liebig-Universität Gießen
2002-2024

Florida State University
2014

University of Veterinary Medicine Hannover, Foundation
1993

Biochar (BC) has been reported to improve growth and drought resistance in many plants. However, adequate information on the mechanism mediated of BC Phragmites karka, a bioenergy plant, is not available. The impact addition (0%, 0.75% 2.5%) plant physiology P. karka under was assessed. Soil water-holding capacity soil water content were significantly improved with as compared un-amended controls. This resulted performance conditions. An increase parameters, such fresh dry biomass, root...

10.1111/plb.13054 article EN Plant Biology 2019-10-16

Abstract This study aimed to evaluate the ability of Piriformospora indica colonize root Chenopodium quinoa and verify whether this endosymbiont can improve growth, performance drought resistance species. The delivered, for first time, evidence successful colonization P. in quinoa. Hence, pot experiment was conducted greenhouse, where inoculated non‐inoculated plants were subjected ample (40%–50% WHC ) deficit (15%–20% irrigation treatments. Drought adversely influenced plant leading decline...

10.1111/jac.12199 article EN Journal of Agronomy and Crop Science 2017-02-09

Increasing human population demands more fuel supply causing the release of hazardous greenhouse gases that could be compensated by supplementing with renewable and environment-friendly alternatives such as biofuels. The argument against use food crops for biofuel production it may cause shortages can countered using feedstock outside chain. This opens up possibility halophytes, algae photosynthetic bacteria sources carbon neutral which produced sustainably without compromising conventional...

10.9755/ejfa.v26i12.19107 article EN cc-by Emirates Journal of Food and Agriculture 2014-01-01

Plant photosynthesis and biomass production are closely associated traits but critical to unfavorable environmental constraints such as salinity drought. The relationships among stress tolerance, photosynthetic mechanisms, ethanol yield were assessed in Phragmites karka. growth parameters, leaf gas exchange chlorophyll fluorescence of P. karka studied when irrigated with the control 100 300 mM NaCl a nutrient solution water deficit conditions (drought, at 50% holding capacity). plant shoot...

10.3390/plants11131657 article EN cc-by Plants 2022-06-23

Abstract The study aims at correlations between ultrastructure of rhizodermal membranes and ATPase activities two gramineous C 4 ‐species effected by salinization the growth medium. Comparative investigations were done with drought‐resistant Sorghum drought‐sensitive, salt tolerant Spartina plants grown under steady‐state conditions without or 40 mol m −3 NaCl. Both species sustained this treatment showed marked influences on but not root respiration. Generally, intramembraneous particle...

10.1111/j.1438-8677.1993.tb00346.x article EN Botanica Acta 1993-04-01

Biochar produced from argan shells can be contaminated by toxic substances accumulated during the pyrolysis process. To determine potential impact of and salt stress, this study focused on effect shell biochar had germination salad (0%, 0.5%, 1%, 2%, 4% or 8% dry weight in a sand-biochar mixture) barley seeds 2.5%, 5% 10% peat-biochar mixture). No negative stress was observed nor rate fresh seedlings. Additionally, application increased biomass all treatments. significant difference control...

10.1016/j.anres.2017.04.001 article EN cc-by-nc-nd Agriculture and Natural Resources 2017-05-15

Degraded land area is increasing in many arid and semi countries (UNEP, 2010). Additionally, fresh water resources are becoming limited routine irrigation practices conventional agriculture causing a steady increase soil salinity. This will lead to further desertification of affected areas the future with concomitant reduction yield crops known for human animal consumption. Consequently it has become imperative search suitable alternatives develop ecologically sustainable economically sound...

10.9755/ejfa.v26i12.19102 article EN cc-by Emirates Journal of Food and Agriculture 2014-01-01

Abstract: Semi‐leafless varieties of pea have considerable agronomic importance and it has been suggested that they may a superior response to water deficits than conventional varieties. However, these are poorly characterized from physiological point view there is lack basis for their supposed better performance under conditions deficit. Here, we describe the solute distribution in different leaf structures semi‐leafless variety ( Pisum sativum L.) non‐limiting stress. A was subjected same...

10.1055/s-2002-35431 article EN Plant Biology 2002-09-01

T HREE SWEETPOTATO cultivars, Abees, Mogamba and Santo Amaro, were subjected to moderate (-0.5MPa) severe drought stress or salt treatments up 200mM NaCl, respectively.Patterns of leaf polyamine contents analyzed verify whether these metabolites could be used as early traits tolerance.Physiological parameters like relative water content, total chlorophyll electron conductance, stomata resistance transpiration rate indicate conditions the plants growth applied identify level tolerance among...

10.21608/ejbo.2019.6752.1269 article EN Egyptian Journal of Botany 2019-02-28

Over two-thirds of Morocco can be classified as semiarid, arid and desert with low variable rainfalls. While the country is subject to frequent drought, groundwater resources are predominantly consume by irrigated agriculture leading depletion water degradation soil quality. Application bio-resources wastes soils after pyrolysis process well documented help retain nutrients in soils. In this study, three derived from argan shells, wood chip, a blend paper sludge wheat husks characterized for...

10.1051/e3sconf/20183702004 article EN cc-by E3S Web of Conferences 2018-01-01

Stresses in plants caused by salt, drought, temperature, radical oxygen species, and toxic substances such as heavy metals are the major reasons for reduction crop yield. For example, around 1000 million ha of land is affected soil salinity. It can be calculated from FAO reports that current irrigation practices lead to annual losses about 1.6 arable just due salting.This destruction farmland stands contradistinction demand food. The world population predicted reach nine billion people year...

10.9755/ejfa.v26i12.19123 article EN Emirates Journal of Food and Agriculture 2014-01-01

Biochar is attracting recently growing interest for its potential use as a carbon sequestration agent and soil amendment improved agricultural productivity.Thus converting biomass wastes into biochar may be considered tool waste disposal recycling option.However many of the previous results are highly variable dependent mainly on initial properties characteristics.In addition, applied to soils should free toxic substances before any future large-scale application.In this study, two biochars:...

10.15242/dirpub.er0517008 article EN 2017-05-17

Con base en imágenes de microscopía electrónica barrido tridimensional (SEM) alta resolución Paravandellia phaneronema (Miles 1943), especie ictioparásito endémica Colombia, se describieron y analizaron las estructuras morfológicas superficiales desarrolladas su proceso evolutivo adaptación a la forma vida hematófaga. La atención enfocó los aspectos emergentes función estas adaptaciones mecanismos que estos parásitos subfamilia Vandellinae han utilizado para localizar con precisión pez...

10.18257/raccefyn.646 article ES cc-by-nc-sa Revista de la Academia Colombiana de Ciencias Exactas Físicas y Naturales 2018-12-26
Paolo Bagnaresi Paolo Pupillo M. Bartels Wolfgang Schmidt Ladislav Bláha and 95 more Jiřı́ Janáček Jana Opatrná M. Ángeles Cerezo P. Garcia-Agustin Eduardo Primo‐Millo J. Ciepły T. Oracka Iwona Ciereszko Agnieszka Gniazdowska Anna Maria Rychter Mónica M. Costa Janeen Arnold Costa Cândido Pinto Ricardo M. Cramer Alex Sandro Schierholt Y. Z. Wang S. H. Lips R. G. Farhytdinov G. R. Kudoyarova Ferenc Fodor E. Cseh D. Dao Thi Phu Ong Gy. Záray Gary G. Fox B. C. Loughman N. R. Mccallan Hervé Quiquampoix R. George Ratcliffe Zhifang Gao S. H. Lips Benet Gunsé Charlotte Poschenrieder Juan Barceló Vesna Hadži‐Tašković Šukalović Milena Vuletić Z. Holub G. Vizárová T. Ješko K. Dekánková Š. Duchoslav Rudolf Kastori Nataša Petrović Rudolf Kastori Lj. Vapa Dejan Radović S. Kevrešan G. Klobus J. Marciniak Jan Buczek Hans Werner Koyro B. Hain Albert J. Schmidt B. Lauwereys László Erdei S. H. Lips M. Cramer Nick Savidov S. S. Lisnik S. I. Toma M. D. Titika TA Mahmood M. P. Cochrane A.J.A. Vinten Cm. Duffus N. Massot Juan Barceló Charlotte Poschenrieder S. N. Melestchenko I. Michalík F. V. Minibayeva L. Kh. Gordon V. I. Filchencova Ewald Müller Peter Janiesch Kenneth P. Murphy P. J. Lumsden L. I. Nikitina Natalia Osmolovskaya Ludmila Kuchaeva Attila Pécsváradi Ferenc Zsoldos Nataša Petrović Rudolf Kastori F. Plhák Z. F. Rahmankulova R. Richter K. Dražďák A. Romeu-Moreno P. Sánchez-Cassas Lluı́s Arola Albert Riu Mas S. Rożek W. Sady Nick Savidov B. I. Tokarev

P. Bagnaresi, Pupillo, M. Bartels, W. Schmidt, L. Bláha, J. Janáček, Opatrná, Cerezo, Garcia-Agustin, E. Primo-Millo, Cieply, T. Oracka, I. Ciereszko, A. Gniazdowska, Rychter, R. Costa, C. Ricardo, D. Cramer, Schierholt, Y. Z. Wang, S. H. Lips, G. Farhytdinov, Kudoyarova, F. Fodor, Cseh, Dao Thi Phu Ong, Gy. Záray, Fox, B. Loughman, N. Mccallan, Quiquampoix, Ratcliffe, Gao, Gunse, Ch. Poschenrieder, Barcelo, V. Hadži-Tašković Šukalović, Vuletić, Holub, Vizárová, Ješko, K. Dekánková, Š....

10.1007/bf02931124 article EN Biologia Plantarum 1994-01-01
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