This map shows the geographic impact of P.R Speijer's research. It shows the number of citations coming from papers published by authors working in each country. You can also color the map by specialization and compare the number of citations received by P.R Speijer with the expected number of citations based on a country's size and research output (numbers larger than one mean the country cites P.R Speijer more than expected).
This network shows the impact of papers produced by P.R Speijer. Nodes represent research fields, and links connect fields that are likely to share authors. Colored nodes show fields that tend to cite the papers produced by P.R Speijer. The network helps show where P.R Speijer may publish in the future.
Co-authorship network of co-authors of P.R Speijer
This figure shows the co-authorship network connecting the top 25 collaborators of P.R Speijer.
A scholar is included among the top collaborators of P.R Speijer based on the total number of
citations received by their joint publications. Widths of edges
represent the number of papers authors have co-authored together.
Node borders
signify the number of papers an author published with P.R Speijer. P.R Speijer is excluded from
the visualization to improve readability, since they are connected to all nodes in the network.
All Works
20 of 20 papers shown
1.
Dochez, Carine, P.R Speijer, Bart De Schutter, et al.. (2009). Host plant resistance and tolerance of musa landraces and hybrids to nematode infestation. CGSPace A Repository of Agricultural Research Outputs (Consultative Group for International Agricultural Research). 137–152.4 indexed citations
2.
Reddy, K. V. Seshu, et al.. (2007). Distribution of plant-parasitic nematodes on Musa in Kenya.. CGSPace A Repository of Agricultural Research Outputs (Consultative Group for International Agricultural Research). 16. 18–23.8 indexed citations
Speijer, P.R, et al.. (2004). Survey of plant parasitic nematodes and banana weevil on Ensete ventricosum in Ethiopia. CGSPace A Repository of Agricultural Research Outputs (Consultative Group for International Agricultural Research). 32(2).12 indexed citations
5.
Speijer, P.R, et al.. (2004). Effect of soil moisture and organic matter levels on plantain root reaction to Radopholus similis. CGSPace A Repository of Agricultural Research Outputs (Consultative Group for International Agricultural Research). 122–128.
6.
Speijer, P.R, et al.. (2001). Reinfestation by nematodes and performance of hot-water-treated East African Highland cooking bananas as perceived by farmers in Ikulwe, Iganga district, Uganda. 7(2). 85–89.5 indexed citations
7.
Schutter, Bart De, P.R Speijer, Carine Dochez, A. Tenkouano, & Dirk De Waele. (2001). Evaluating host plant reaction of Musa germplasm to Radopholus similis by inoculation of single primary roots. Nematropica. 31(2). 295–300.8 indexed citations
8.
Elsen, Annemie, P.R Speijer, Rony Swennen, & Dirk De Waele. (2000). Nematode species densities, root damage and yield of bananas (Musa spp.) in Uganda.. CGSPace A Repository of Agricultural Research Outputs (Consultative Group for International Agricultural Research). 6(2). 31–36.7 indexed citations
9.
Elsen, Annemie, P.R Speijer, Rony Swennen, & Dirk De Waele. (2000). Nematode species densities, root damage and yield of bananas (Musa spp.) cultivated in Uganda. 31–36.1 indexed citations
10.
Speijer, P.R, et al.. (2000). Spatial distribution of nematode population densities and nematode damage in roots of three banana cultivars in Uganda.. Nematropica. 30(1). 19–31.6 indexed citations
11.
Speijer, P.R, et al.. (1999). Evaluation of Musa Host Plant Response Using Nematode Densities and Damage Indices. Nematropica. 29(2). 185–192.19 indexed citations
12.
Speijer, P.R, Elia Boonen, D. Vuylsteke, Rony Swennen, & Dirk De Waele. (1999). Nematode Reproduction and Damage to Musa Sword Suckers and Sword Sucker Derived Plants. Nematropica. 29(2). 193–203.7 indexed citations
13.
Gold, Clifford S., et al.. (1998). Infestation levels of banana weevil, Cosmopolites sordidus Germar (Coleoptera : Curculionidae), in banana plants established from treated propagules in Uganda. African Entomology. 6(2). 253–263.10 indexed citations
14.
Gold, Clifford S., et al.. (1998). Hot-water treatment for the control of the banana weevil, Cosmopolites sordidus Germar (Coleoptera: Curculionidae), in Uganda.. African Entomology. 6(2). 215–221.10 indexed citations
15.
Speijer, P.R, Dirk De Waele, R. Fogain, et al.. (1997). Screening of Musa germplasm for resistance and tolerance to nematodes. CGSPace A Repository of Agricultural Research Outputs (Consultative Group for International Agricultural Research).113 indexed citations
16.
Speijer, P.R, et al.. (1997). Early Screening of Cassava for Resistance to Root-Knot Nematodes. Nematropica. 27(1). 19–25.3 indexed citations
17.
Speijer, P.R & Dirk De Waele. (1997). Screening of Musa germplasm for resistance and tolerance to nematodes. INIBAP Technical Guidelines No. 1.56 indexed citations
18.
Speijer, P.R, et al.. (1996). Evaluation of cassava for reaction to root-knot nematodes (meloidogyne spp.) in Uganda. Journal of Plant Protection. 6. 125–134.2 indexed citations
19.
Gold, Clifford S., P.R Speijer, E. Karamura, W. K. Tushemereirwe, & I. Kashaija. (1994). Survey methodologies for banana weevil and nematode damage assessment in Uganda.. African Crop Science Journal.20 indexed citations
20.
Kashaija, I., P.R Speijer, Clifford S. Gold, & S. R. Gowen. (1994). Occurrence distribution and abundance of plant parasitic nematodes of bananas in Uganda. TSpace.27 indexed citations
Rankless uses publication and citation data sourced from OpenAlex, an open and comprehensive
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incomplete records, variations in author disambiguation, differences in journal indexing, and
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Rankless may not fully capture the entirety of a scholar's output or impact.