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Prof. Dr. Mathias Becker


 

Selected publications:

  

2020

Kwesiga, J., Grotelüschen, C., Neuhoff, D., Senthilkumar, K., Döring, T.F.,Becker, M. (2020) Effect of organic amendments on the productivity of rainfed lowland rice in the Kilombero floodplain of Tanzania. Agronomy 10 (in press).

Kwesiga, J., Grotelüschen, C., Neuhoff, D., Senthilkumar, K., Döring, T.F.,Becker, M. (2020) Rice yield gaps in smallholder systems of the Kilombero floodplain in Tanzania. Agronomy 10 (accepted, in press).

Shrestha, S., Becker, M., Lamers, J.P.A., Wimmer, M. (2020) Boron and zinc fertilizer applications are essential in emerging vegetable-based crop rotations in Nepal. Journal of Plant Nutrition and Soil Science. DOI: 10.1002/jpln.202000151

Shrestha, S., Becker, M., Lamers, J.P.A., Wimmer, M. (2020) Diagnosis of Zinc and Boron availability in emerging vegetable-based crop rotation in Nepal. J. Plant Nutr. Soil Sci.. DOI: 10.1002/jpln 202000020


2019

Alibu, S., Neuhoff, D., Senthilkumar, K., Becker, M., Köpke, U. (2019) Potential of cultivating dry season maize along a hydrological gradient of an inland valley in Uganda. Agronomy 9, 606.

Alvarez, M., Heller, G., Malombe, I., Matheka, K.W., Choge, S., Becker, M. (2019) Classification of Prosopis juliflora invasion in the Lake Baringo basin and environmental correlations. Afric. J. Ecol. 57(3), 296-303.

Amouzou, K.A., Lamers, J.P.A., Naab, J.B., Borgemeister, C., Vlek, P.L.G., Becker, M.,  (2019) Climate change impact on water- and nitrogen-use efficiencies and yields of maize and sorghum in the northern Benin dry savanna, West Africa.  Field Crops Res. 235, 104-117.

Becker, M., Angulo, C. (2019) The evolution of lowland rice-based production systems in Asia: Historic trends, determinants of change, future perspective. Adv. Agron. 157, 293-327.

Bierschenk, B., Tagele, M.M.T., Ali, B., Ashrafuzzaman, Md., Wu, L.B., Becker, M., Frei, M. (2019) Evaluation of rice wild relatives as a source of traits for adaptation to iron toxicity and enhanced grain quality. PLOSone 14(12): e02245683. 

Kwesiga, J., Grotelüschen, C., Neuhoff, D., Senthilkumar, K., Döring, T.F.,Becker, M. (2019) Site and management effects on grain yield and yield variability of rainfed lowland rice in the Kilombero floodplain of Tanzania. Agronomy 9, 608.

Syahrinudin, Denich M., Becker, M., Hartati, W., Vlek, P.L.G. (2019) Biomass and carbon distribution on Imperata cylindrica grasslands. Biodiversitas 21(1), 74-79. 

2018

Amouzou, K.A., Naab, J.B., Lamers, J.P.A. and Becker, M. (2018). Productivity and nutrient use efficiency of maize, sorghum, and cotton in the West African dry savanna. Journal of Plant Nutrition and Soil Science 181(2). online. doi: 10.1002/jpln.201700139

Amouzou, K.A., Naab, J.B., Lamers, J.P.A., Becker, M. Vlek, P.L.G. (2018) CROPGRO-Cotton model for determining climate change impacts on yield, water- and N- use efficiencies of cotton in the Dry Savanna of West Africa. Agricultural Systems 165, 85-96.

Niang, A., Becker, M., Ewert, F., Tanaka, A., Dieng, I., Saito, K. (2018) Yield variation of rainfed rice as affected by field water availability and N fertilizer use in central Benin. Nutr. Cycl. Agroecosyst. (online), doi:10.1007/s10705-017-9898-y

2017

Amouzou, K.A., Naab, J.B., Lamers, J.P.A. and Becker, M. (2017). CERES-Maize and CERES-Sorghum for modeling growth, N and P uptake and soil moisture dynamics in the dry savanna of West Africa. Field Crops Res. 217, 134-149.

Niang, A., Becker, M., Ewert, F., Dieng, I., Gaiser, T. et al. (2017) Variability of yields and its determinants in rice production systems of West Africa. Field Crops Res. 207, 1–12.

Tahiru, F., Fosu, M., Gaiser, T., Becker, M., Inusah, B.I.Y., Mutari, A., Buah, S.S.J., Atakora, W.K., Mohammed, A,M. (2017) Fertilizer and genotype effects on maize production on two soils in the Northern region of Ghana. Sustain. Agric. Res. 4(4) 76-87.

Zhang, J., Manske, G., Zhou, P.Q., Tischbein, B., Becker, M., Li, Z.H. (2017) Factors influencing farmers’ decisions on nitrogen fertilizer application in the Liangzihu Lake basin, Central China. Environ, Develop. Sustain.. online  doi: 10.1007/s10668-016-9765-z.

2016

Becker, M., Alvarez, M., Heller, G.,  Leparmarai, P., Maina, D., Malombe, I., Bollig, M., Vehrs, H. (2016). Land-use changes and the invasion dynamics of shrubs in Baringo. Journal of Eastern African Studies 10(1), 111-129. DOI:10.1080/17531055.2016.1138664.

Böhme, B., Becker, M., Diekkrüger, B., Gerd Förch, G. (2016). How is water availability related to the land use and morphology of an inland valley wetland in Kenya? Physics and Chemistry of the Earth, Parts A/B/C (available online 10 March 2016); DOI:10.1016/j.pce.2016.03.005.

Beuel, S., Alvarez, M., Amler, E., Behn, K., Kotze, D., Kreye, C., Leemhuis, C., Wagner, K., Kyalo Willy, D., Ziegler, S., Becker, M. (2016). A rapid assessment of anthropogenic disturbances in East African wetlands. Ecological Indicators 67, 684–692.

Frei, M., Tetteh, R.N., Razafindrazaka, A.L., Fuh, M.A., Wu, L-B., Becker, M. (2016) Responses of rice to chronic and acute iron toxicity: genotypic differences and biofortification aspects. Plant Soil. (available online 18 May 2016). DOI 10.1007/s11104-016-2918-x.

2015

Becker, M. (ed) (2014) Small Wetlands in East Africa: A field guide to the representative flora. Selbstverlag, University of Bonn, Germany. ISBN 978-3-00-047349-4.

Changwony,  K.D., Lanyasunya, T.P., Südekum, K-H., Becker. M.  (2015)  Feed intake and digestibility by sheep of natural vegetation in the riparian land of lake Naivasha, Kenya. Small Ruminants Research. 123, 75-82.

Dold, C. Becker, M. (2015) Soil attributes and plant production changes in a  tropical littoral Wetland. J. Plant Nutr. Soil Sci. 178(3) DOI: 10.1002/jpln. 201400258

Leparmarai, P., M. Alvarez, , G. Heller, and M. Becker (2015) “The role of endozoochory on the recovery and germination of Prosopis juliflora seeds” Arid Lands 7(5): 000-000 (in press)

Matthus, E.,  Wu, L.-B., · Ueda, Y, · Höller, S., Becker, M., Frei, M. (2015) Loci, genes, and mechanisms associated with tolerance to ferrous iron toxicity in rice (Oryza sativa L.). Theor Appl Genet DOI 10.1007/s00122-015-2569-y.

Shrestha, R.K., Engel, K., Becker, M. (2015) Effect of transpiration on iron uptake and translocation in lowland rice. J. Plant Nutr. Soil Sci. 178(3) 1-5. DOI: 10.1002/jpln.201400361

2014

Becker, M., Alvarez, M, Behn, K., Handa, C., Misana, S., Mogha, N., Möseler, B.M., Oyieke, H. (2014) Small wetlands in East Africa: A field guide to the representative flora. Selbstverlag, Bonn. Germany. 202 pp.  ISBN 978-3-00-047349-4.

Becker, M., Schütt, B., Amini, S. (2014) Proposal writing for international research projects - a guide for teachers. DAAD Publishing, Bonn, Germany. 97 pp.

Changwony,  K.D., Alvarez, M., Lanyasunya, T.P., C. Dold, C., M. Becker. M.,  Südekum, K-H. (2014)  Biomass and quality changes of forages along land use and soil type 1 gradients in the riparian zone of Lake Naivasha, Kenya. Ecological Indicators 49, 169–177. (IF 3.384)

Changwony,  K.D., Lanyasunya, T.P., Südekum, K-H., Becker. M.  (2015)  Feed intake and digestibility by sheep of natural vegetation in the riparian land of lake Naivasha, Kenya. Small Ruminants Research. 123, 75-82.

Kamiri, H.W., Kreye, C., Becker, M. (2014)  Assessing selected soil properties responses to wetland cultivation in floodplain wetlands of East Africa. International Journal of AgriScience 3(11), 825-837.

Kuria, D. N., G. Menz, S. Misana, E. Mwita, H.-P. Thamm, M. Alvarez, N. Mogha, M. Becker, and H. Oyieke (2014) Seasonal Vegetation Changes in the Malinda Wetland Using Bi-Temporal, Multi-Sensor, Very High Resolution Remote Sensing Data Sets. Advances in Remote Sensing, 3(1), 33-48.

Pame, A.R., Kreye, C., Johnson, D. Heuer, S. Becker, M. (2014)  Effects of genotype, seed P concentration and seed priming on seedling vigor of rice. Experimental Agriculture 51(1) 1-12.

Theobald, T.F.H., , Mussgnug, F., Becker, M. (2014): Live fences – a hidden resource of soil fertility in West Kenya. J. Plant Nutr. Soil Sci. 177, 758-765 , DOI: 10.1002/jpln.201300232.

Wilbers, G-J., Becker, M., La Thi Nga, Sebesvari, Z., Renaud, F.G. (2014): Spatial and temporal variability of surface water pollution in the Mekong Delta, Vietnam. Science of the Total Environment 485–486 (2014), 653–665.

Wu, L-B., - Shhadi, M.Y., Gregorio, G., Matthus, E., Becker, M., Frei, M. (2014): Genetic and physiological analysis of tolerance to acute iron toxicity in rice. Rice 7, 8 (published online at http://www.thericejournal.com/content/7/1/8).

2013

Diwani, T.N., Asch, F., Becker, M., Mussgnug, F. 2013. Characterizing farming systems around Kakamega Forest, Western Kenya. J. Plant Nutr. Soil Sci. 176, 585–594. DOI: 10.1002/jpln.201200036.

Greiner, C., Alvarez, M., Becker, M. 2013. From Cattle to Corn: Attributes of Emerging Farming Systems of Former Pastoral Nomads in East Pokot, Kenya. Society & Natural Resources DOI: 10.1080/08941920.2013.791901

Kamiri, H.W., Kreye, C., Becker, M. 2013. Dynamics of agricultural use differentially affect soil properties and crop response in East African wetlands. Wetlands Ecol. Manage.  DOI: 10.1007/s11273-013-9315-5.

Kuria, D.N., Menz, G., Misana, S., Mwita, E., Thamm, H.-P., Alvarez, M., Mogha, N., Becker, M., Oyieke, H. 2013. Seasonal vegetation changes in the Malinda Wetland using bi-temporal, multi-sensor, very high resolution remote sensing data sets. Advances in Remote Sensing, doi:10.4236/ars.2013. published online.

Mtei, K.M., Ngome, A.F., Wambua, S., Becker, M. 2013. Assessment of Technology Options Addressing Agricultural Production Constraints in Western Kenya. Greener J. Agric. Sci. 3(3):222-234.

Ngome, A.F.  Becker, M.  Mtei, M.K., Mussgnug, F. 2013. Maize productivity and nutrient use efficiency in Western Kenya as affected by soil type and crop management. Int. J. Plant Prod. 7 (3):517-536.

Sakané, N., Becker, M., Langensiepen, M., van Wijk, M.T. 2013. Typology of Smallholder Production Systems in Small East-African Wetlands. Wetlands 33(1):101-116.

2012

Alvarez, M.; Becker, M.; Böhme, B.; Handa, C.; Josko, M.; Kamiri, H.; Langensiepen, M.; Menz, G.; Misana, S.; Mogha, N.; Möseler, B.M.; Mwita, E.; Oyieke, H.; Sakane, N. (2012): SWEA-Dataveg: vegetation of small wetlands in East Africa. Biodiversity Ecol. 4:64-76.

Angulo, C.L., Becker, M., Wassmann, R. 2012. Yield gap analysis and assessment of climate-induced yield trends of irrigated rice in selected provinces of the Philippines. J.  Agric. Rural Develop. Trop. Subtrop.113(1): doi :hebis:34-2011101139358.

Aryal, D.R., Geissen, V., Ponce-Mendoza, A., Ramos-Reyes R.R., Becker, M. (2012): Water quality under intensive banana production and extensive pastureland in tropical Mexico. J. Plant Nutr. Soil Sci. 175(3):553-559.

Engel, K., Asch, F., Becker, M. (2012): Classification of rice genotypes based on their tolerance and mechanisms of adaptation to conditions of iron toxicity. J. Plant Nutr. Soil Sci.. 175(6):871-881.

Engel, K., Asch, F., Becker, M. (2012): In vivo staining of reduced iron by 2,2’ bipyridine in rice exposed to iron toxicity. J. Plant Nutr. Soil Sci. 175(4), 548-552.

Mwita, E., Menz, G., Misana, S., Becker, M., Kisanga, D., Böhme, B. 2012. Mapping small wetlands of Kenya and Tanzania using remote sensing techniques. Int. J. Appl. Earth Observ. Geoinf. doi.org/10.1016/j.jag.2012.08.010.

Ngome, A.F, Mtei, K.M.,Mussgnug, F., Becker, M. (2012): Management options and soil type differentially affect weeds in maize fields of Kakamega, western Kenya. J. Agric. Sci. Technol. A2:104-114.

Ngome, A.F., Becker, M., Mtei, K.M. (2012): Leguminous cover crops differentially affect maize yields in three contrasting soil types of Kakamega, Western Kenya. J. Agr. Rural Develop. Trop Subtrop. 112(1):1-10.

Ngome, F.A.F., Becker, M., Mtei, K.M., Mussgnug, F. (2012): Soil fertility management for maize cultivation in some soils of Western Kenya. Soil Till. Res. 117:69,75.

2003 - 2011

Ajouri, A.,  Asgedom, H. and Becker, M. 2004. Seed priming enhances germination and seedling growth of barley under conditions of P and Zn deficiency. J. Plant Nutri. Soil Sci. 167:630-636.

Alvarez, M., Becker, M., Bohme, B., Handa, C., Josko, M., Kamiri, H.W., Langensiepen3, M., Menz, G., Misana, S., Mogha, N., Moseler, B.M, Mwita, E., Oyieke, H., and Sakane, N. 2001. Floristic classification of the vegetation in small wetlands of Kenya and Tanzania. Biodivers.. Ecol. 4:63-76.

Asch, F., Kpongor, D. and Becker, M. 2005. A quick and efficient screen for resistance to iron toxicity in lowland rice. J. Soil Sci Plant Nutr.168: 764-773.

Becker, M., Asch, F. 2005. Iron toxicity in rice -  conditions and management concepts. J. Plant Nutri. Soil Sci. 168: 558-573.

Becker, M., Johnson, D.E., Wopereis, M.S.C. and Sow, A. 2003. Rice yield gaps in irrigated systems along an agro-ecological gradient in West Africa. J. Plant Nutr. Soil Sci. 166, 61-67.

Becker, M.; Maskey, S.L.; Pande, K.R.;  Shah S.C.; and Shrestha , S.C. 2007. Effects of transition season management on soil N dynamics and system N balances in rice-wheat rotations of Nepal. Field Crops Res.  103(2):98-108.

Mussgnug, F., Becker, M., Son, T.T, Buresh, R.J., Vlek, P.L.G. (2006). Yield gaps and nutrient balances in intensive, rice-based cropping systems on degraded soils in the Red River Delta of Vietnam. Field Crops Res. 98:127-140.

Pande, K.R. and Becker, M. 2003. Seasonal soil nitrogen dynamics in rice-wheat cropping systems of Nepal. J. Plant Nutr. Soil Sci. 66: 499-506.

Sakane, N., Alvarez, M., Becker, M., Böhme, B., Handa, C., Kamiri, H., Langensiepen, M., Menz, G., Misana, S., Mogha, N., Möseler, B., Mwita, E. Oyieke, A.H., van Wijk, M. (2011) Classification, characterisation, and use of small wetlands in East Africa. Wetlands 31(2) (6):1103-1116.

Shrestha, S., Asch, F., Dingkuhn, M. and Becker, M (2011) Cropping calendar options for rice–wheat production systems at high-altitudes. Field Crops Research 121(1):158-167.

Somado, E.A., Becker, M. Kuehne, R.F., Sawrawat, K.L., Vlek, P.L.G. 2003. Combined effects of legumes with rock phosphorus on rice in West  Africa. Agron. J. 95: 1172-1178.

Touré, A, Becker, M., Johnson, D.E., Koné, B., Kossou, D.K., Kiepe, P. 2009. Response of lowland rice to agronomic management under different hydrological regimes in an inland valley of the Guinea Savanna zone of West Africa. Field Crops Res. 114(2):304-310.

1996 - 2002

Akanvou, R., Becker, M. Bastiaans, L., Kropff, M. 2001. Effects of sowing dates on cover legumes-upland rice intercropping systems in West Africa. Biol. Fertil. Soils 33: 15-21.

Akanvou, R., Becker, M., Chano, M., Johnson, D.E., Gbaka-Tcheche, H., Toure, A. 2000. Fallow residue management effects on upland rice in three agro-ecological zones of West Africa. Biol. Fertil. Soils 31:501-507.

Becker, M., Johnson, D.E. 1997 The role of legume fallows in intensified upland rice-based systems. Nutr. Cycl. Agroecosyst. 53:71-81.

Becker, M., Johnson, D.E. 1998. Rice yield and productivity gaps in irrigated systems of the forest zone of Côte d’Ivoire. Field Crops Res. 60:201-208.

Becker, M., Johnson, D.E. 1999. Legumes as dry season fallow in upland rice-based systems of West Africa. Biol. Fertil. Soils 27:358-367.

Becker, M., Johnson, D.E. 1999. Rice yield and productivity gaps in irrigated systems of the forest zone of Côte d’Ivoire. Field Crops Res. 60:201-208.

Becker, M., Johnson, D.E. 2001. Cropping intensity effects on upland rice yield and sustainability in West Africa. Nutr. Cycl. Agroecosys. 59:128-133.

Becker, M., Johnson, D.E. 2001. Improved water control and crop management effects on lowland rice productivity in West Africa. Nutr. Cycl. Agroecosys. 59:119-127.

Becker, M., Johnson, D.E., Wopereis, M.S.C. 2001. The role of N nutrition on rice yields along an agroecological gradient in West Africa.. Develop. Plant Soil Sci. 92:970-971.

Becker, M., Ladha, J.K. 1996. Adaptation of green manure legumes to adverse conditions in rice lowlands. Biol. Fertil. Soils 23:243-248.

Becker, M., Ladha, J.K. 1996. Synchronizing residue N mineralization with rice N demand in flooded conditions. In: Giller, K.,Cadisch, G. (eds.) Driven by nature: Plant litter quality and decomposition. CAB International, London. pp. 231-238.

Kent, R., Johnson D.E., Becker M. 2001. The influence of cropping system on weed communities of rice in Côte d’Ivoire, West Africa. Agric. Ecosyst. Environ. 87, 299-307.

Before 1995

Alazard, D., Becker, M. 1987. Aeschynomene as green manure for rice. Plant and Soil 101:141-143.
Becker, M. and George, T. 1995. Nitrogen fixation response of stem- and root-nodulating Sesbania species to flooding and mineral nitrogen. Plant and Soil 175:189-196.

Becker, M., Alazard, D., Ottow, J.C.G. 1986. Mineral nitrogen effect on nodulation and nitrogen fixation of the stem-nodulating legume Aeschynomene afraspera. Z. Pflanzenernähr. Bodenkd. 129:485-491.
Becker, M., Ali, M., Ladha, J.K., Ottow, J.C.G. 1995. Agronomic and economic evaluation of Sesbania green manure establishment in irrigated rice. Field Crops Res. 40:135-141.

Becker, M., Diekmann, K.H., Ladha, J.K., De Datta, S.K., Ottow, J.C.G. 1991. Effect of NPK on growth and nitrogen fixation of Sesbania rostrata as a green manure for lowland rice (Oryza sativa L.) Plant and Soil 132:149-158.

Becker, M., Ladha, J.K., Ali, M. 1995. Green manure technology: Potential usage, limitations. A case study for lowland rice. Plant and Soil 174:181-194.

Becker, M., Ladha, J.K., Ottow, J.C.G. 1990 Einfluss von NPK auf die Biomasseproduktion und Stickstoffbindung der stängelknöllchenbildenden Leguminosen Sesbania rostrata und Aeschynomene afraspera. Z. Pflanzenernäh. Bodenkd. 153:333-339.

Becker, M., Ladha, J.K., Ottow, J.C.G. 1990. Growth and nitrogen fixation of two stem- nodulating legumes and their effect as green manure on lowland rice. Soil Biol. Biochem. 22:1109-1119.

Becker, M., Ladha, J.K., Ottow, J.C.G. 1994. Nitrogen losses and lowland rice yield as affected by residue N release. Soil Sci. Soc. Am. J. 58:1660-1665.

Becker, M., Ladha, J.K., Simpson, I.C. and Ottow, J.C.G. 1994.  Parameters affecting residue nitrogen release in flooded soil. Soil Sci. Soc. Am . J. 58:1666-1671.

Becker, M., Ladha, J.K., Watanabe, I., Ottow, J.C.G. 1988 Seeding vs. vegetative propagation of the stem- nodulating green manure Sesbania rostrata. Biol. Fertil. Soils 6:279-281.

Engels, K.A., Becker, M., Ottow, J.C.G., Ladha, J.K. 1995. Influence of P and PK fertilization on N2 fixation of the stem-nodulating green manure legume Sesbania rostrata in different marginally productive wetland rice soils. Biol. Fertil. Soils 20:107-112.

Ladha, J.K., Pareek, R.P., Becker, M. 1992. Stem-nodulating legume-Rhizobium symbiosis and its agronomic use in lowland rice. Adv. Soil Sci. 20:147-192.

 

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