| Relationships Between Acyrthosiphon kondoi and Damage in Three Varieties of Alfalfa AL Bishop, PJ Walters, RH Holtkamp, BC Dominiak Journal of Economic Entomology 75 (1), 118-122, 1982 | 30 | 1982 |
| Establishment and rapid spread of the bitou seed fly, Mesoclanis polana Munro (Diptera: Tephritidae), in eastern Australia PB Edwards, RH Holtkamp, RJ Adair Australian Journal of Entomology 38 (2), 148-150, 1999 | 29 | 1999 |
| The biology of Australian weeds. 33. Senecio madagascariensis Poir. BM Sindel, IJ Radford, RH Holtkamp, PW Michael Plant Protection Quarterly 13 (1), 2-15, 1998 | 28 | 1998 |
| The biology of Australian weeds. 33. Senecio madagascariensis Poir. BM Sindel, IJ Radford, RH Holtkamp, PW Michael Plant Protection Quarterly 13 (1), 2-15, 1998 | 28 | 1998 |
| A lightweight, self‐contained insect suction sampler RH Holtkamp, JI Thompson Australian Journal of Entomology 24 (4), 301-302, 1985 | 27 | 1985 |
| The arthropod fauna of lucerne in the Hunter Valley, New South Wales AL Bishop, RH Holtkamp General and Applied Entomology: The Journal of the Entomological Society of …, 1982 | 27 | 1982 |
| A review of the Chrysanthemoides monilifera biological control program in Australia: 1987-2005 PO Downey, RH Holtkamp, J Ireson, RM Kwong, AE Swirepik Plant Protection Quarterly 22 (1), 24-32, 2007 | 25 | 2007 |
| Biological control of the native shrubs Cassinia spp. using the native scale insects Austrotachardia sp. and Paratachardina sp.(Hemiptera: Kerriidae) in New South Wales C MH, H RH, MC LH, W PJ, D JF, G PJ, G PS | 23 | 1994 |
| Impact of the biological control agent Mesoclanis polana (Tephritidae) on bitou bush (Chrysanthemoides monilifera subsp. rotundata) in eastern Australia PB Edwards, RJ Adair, RH Holtkamp, WJ Wanjura, AS Bruzzese, ... Bulletin of Entomological Research 99 (1), 51-63, 2009 | 21 | 2009 |
| Establishment of three species of lucerne aphids on 24 cultivars of lucerne RH Holtkamp, AD Clift Australian Journal of Agricultural Research 44 (1), 53-58, 1993 | 20 | 1993 |
| Insecticide Resistance in Therioaphis trifolii f. maculata (Hemiptera: Aphididae) in Australia RH Holtkamp, VE Edge, BC Dominiak, J Walters Journal of Economic Entomology 85 (5), 1576-1582, 1992 | 19 | 1992 |
| Development of a pesticide exclusion technique for assessing the impact of biological control agents for Chrysanthemoides monilifera RJ Adair, RH Holtkamp Biocontrol Science and Technology 9 (3), 383-390, 1999 | 18 | 1999 |
| Insects and diseases of fireweed, Senecio madagascariensis, and the closely related Senecio lautus complex. RH Holtkamp, JR Hosking | 16 | 1993 |
| Impact of bitou tip moth, Comostolopsis germana, on bitou bush in New South Wales RH Holtkamp Proceedings of the 13th Australian Weeds Conference, eds H. Spafford Jacob …, 2002 | 15 | 2002 |
| Management of Acyrthosiphon kondoi Shinji, blue-green aphid, and Therioaphis trifolii (Monell) f. maculata, spotted alfalfa aphid, by grazing and cutting lucerne AL Bishop, LR Greenup, RH Holtkamp Australian Journal of Experimental Agriculture 20 (107), 710-716, 1980 | 15 | 1980 |
| Influence of nectar volume and sugar content on seed set in lucerne RH Holtkamp, KJ Morthorpe, AD Clift Australian Journal of Experimental Agriculture 32 (6), 713-716, 1992 | 14 | 1992 |
| The biology of Australian weeds 53: Cylindropuntia rosea (DC.) Backeb. and Cylindropuntia tunicata (Lehm.) FM Knuth SB Johnson, JR Hosking, RJ Chinnock, RH Holtkamp Plant protection quarterly 24 (2), 42-49, 2009 | 13 | 2009 |
| Improving release strategies to increase the establishment rate of weed biocontrol agents. MD Day, DT Briese, BS Grace, RH Holtkamp, JE Ireson, AW Sheppard, ... | 13 | 2004 |
| The host range of three biotypes of Dactylopius tomentosus (Lamarck)(Hemiptera: Dactylopiidae) and their potential as biological control agents of Cylindropuntia spp.(Cactaceae … PK Jones, RH Holtkamp, WA Palmer, MD Day Biocontrol science and technology 25 (6), 613-628, 2015 | 11 | 2015 |
| The host range of four new biotypes of Dactylopius tomentosus (Hemiptera: Dactylopiidae) from southern USA and their potential as biological control agents of Cylindropuntia … PK Jones, RH Holtkamp, MD Day Biocontrol Science and Technology 26 (8), 1033-1047, 2016 | 10 | 2016 |
