References
- Aldana-Llanos, L., Salinas-Sánchez, D.O., Valdés-Estrada, M.E., Gutiérrez-Ochoa, M., Flores, E.Y.R. & Navarro-García, V.M. 2012. Biological activity of dose extracts of Tagetes erecta L. on Spodoptera frugiperda (J.E. Smith). Southwestern Entomologist, 37(1): 31–38. https://doi.org/10.3958/059.037.0104
- Alhadidi, S.N., Griffin, J.N. & Fowler, M.S. 2018. Natural enemy composition rather than richness determines pest suppression. BioControl, 63: 575–584. https://doi.org/10.1007/s10526-018-9870-z
- Andaloro, J.T., Rose, K.B., Shelton, A.M., Hoy, C.W. & Becker, F.R. 1983. Cabbage growth stages [Susceptibility to pests and diseases]. New York’s Food and Life Sciences Bulletin, no. 101.
- Banks, J.E. & Ekbom, B. 1999. Modelling herbivore movement and colonization: pest management potential of intercropping and trap cropping. Agricultural and Forest Entomology, 1(3): 165–170. https://doi.org/10.1046/j.1461-9563.1999.00022.x
- Birthal, P.S., Sharma, O.P. & Kumar, S. 2000. Economics of integrated pest management: Evidences and issues. Indian Journal of Agricultural Economics, 55(4): 644–659. https://doi.org/10.22004/ag.econ.297780
- Burger, J. 2006. Bioindicators: types, development, and use in ecological assessment and research. Environmental Bioindicators, 1(1): 22–39. https://doi.org/10.1080/15555270590966483
- Chowdhury, S., Dubey, V.K., Choudhury, S., Das, A., Jeengar, D., Sujatha, B., Kumar, A., Kumar, N., Semwal, A. & Kumar, V. 2023. Insects as bioindicator: a hidden gem for environmental monitoring. Frontiers in Environmental Science, 11: 1146052. https://doi.org/10.3389/fenvs.2023.1146052
- Cong, Y., Chen, J., Xie, Y., Wang, Y. & Cheng, C. 2023. Toxicity and sublethal effects of diamide insecticides on key non-target natural predators, the larvae of Coccinella septempunctata L. Toxics, 11(3): 270. https://doi.org/10.3390/toxics11030270
- Cotes, B., Ruano, F., García, P.A., Pascual, F. & Campos, M. 2009. Coccinellid morphospecies as an alternative method for differentiating management regimes in olive orchards. Ecological Indicators, 9(3): 548–555. https://doi.org/10.1016/j.ecolind.2008.08.003
- Dassanayake, A.R., De Silva, G.G.R. & Mapa, R.B. 2020. Major soils of the Dry Zone and their classification. In: Mapa, R.B. (Ed.), The Soils of Sri Lanka, Springer, Cham, pp. 49–67. https://doi.org/10.1007/978-3-030-44144-9_5
- Dhima, K.V., Lithourgidis, A.S., Vasilakoglou, I.B. & Dordas, C.A. 2007. Competition indices of common vetch and cereal intercrops in two seeding ratios. Field Crops Research, 100(2–3): 249–256. https://doi.org/10.1016/j.fcr.2006.07.008
- DOA. 2017. Department of Agriculture. Gowa Wagawe Palibodha Palanaya. In: Department of Agriculture Website. [Cited 31 November 2023]. https://doa.gov.lk/hordi-crop-cabbage/
- DOA. 2022. Department of Agriculture. Agstat. In: Department of Agriculture Website. [Cited 31 November 2023]. https://doa.gov.lk/sepc-downloads_en/#1583822518501-4cd250c2-4e98
- DOA. 2023a. Department of Agriculture. Cost of cultivation of agricultural crops. In: Department of Agriculture Website. [Cited 31 November 2023]. https://doa.gov.lk/sepc-downloads_en/#1583822504400-e193de8f-2b55
- DOA. 2023b. Department of Agriculture. Cabbage. In: Department of Agriculture Website. [Cited 28 October 2023]. https://doa.gov.lk/hordi-crop-cabbage/
- Dunbar, M.W., O’Neal, M.E. & Gassmann, A.J. 2016. Increased risk of insect injury to corn following rye cover crop. Journal of Economic Entomology, 109(4): 1691–1697. https://doi.org/10.1093/jee/tow101
- Easlon, H.M. & Bloom, A.J. 2014. Easy Leaf Area: automated digital image analysis for rapid and accurate measurement of leaf area. Applications in Plant Sciences, 2(7): 1400033. https://doi.org/10.3732/apps.1400033
- Gopi, G., Elumalai, A. & Jayasri, P. 2012. A concise review on Tagetes erecta. International Journal of Phytopharmacy Research, 3(1): 16–19.
- Hemachandra, K.S., Polaszek, A., Sirisena, U.G.A.I., Singhamuni, S. & Perera, M.C.D. 2015. Trichogrammatid egg parasitoids (Hymenoptera: Trichogrammatidae) of rice leaf folder and cabbage caterpillars in Sri Lanka. Sri Lanka Journal of Food and Agriculture, 1: 1–7. https://doi.org/10.4038/sljfa.v1i1.1
- Huss, C.P., Holmes, K.D. & Blubaugh, C.K. 2022. Benefits and risks of intercropping for crop resilience and pest management. Journal of Economic Entomology, 115(5): 1350–1362. https://doi.org/10.1093/jee/toac045
- Iamba, K. 2021. Biological role of marigold (Tagetes erecta L.) in habitat manipulation and sustenance of natural enemy populations in upland rice. Arthropods, 10(3): 66-81.
- Iverson, A.L., Marín, L.E., Ennis, K.K., Gonthier, D.J., Connor‐Barrie, B.T., Remfert, J.L., Cardinale, B.J. & Perfecto, I. 2014. Do polycultures promote win‐wins or trade‐offs in agricultural ecosystem services? A meta‐analysis. Journal of Applied Ecology, 51(6): 1593–1602. https://doi.org/10.1111/1365-2664.12334
- Jankowska, B., Poniedziałek, M. & Jędrszczyk, E. 2009. Effect of intercropping white cabbage with French marigold (Tagetes patula nana L.) and pot marigold (Calendula officinalis L.) on the colonization of plants by pest insects. Folia Horticulturae, 21(1): 95–103. https://doi.org/10.2478/fhort-2013-0129
- Kumar, Y., Singh, S. & Gill, O.P. 2003. Integrated weed management in irrigated groundnut (Arachis hypogaea). Indian Journal of Agronomy, 48(2): 117–119. https://doi.org/10.59797/ija.v48i2.3056
- Li, C., Hoffland, E., Kuyper, T.W., Yu, Y., Li, H., Zhang, C., Zhang, F. & van der Werf, W. 2020. Yield gain, complementarity, and competitive dominance in intercropping in China: a meta-analysis of drivers of yield gain using additive partitioning. European Journal of Agronomy, 113: 125987. https://doi.org/10.1016/j.eja.2019.125987
- Liu, S.S., Li, Y.H. & Lou, Y.G. 2006. Non-host plant extracts reduce oviposition of Plutella xylostella and enhance parasitism by Cotesia plutellae. Bulletin of Entomological Research, 96(4): 373–378. https://doi.org/10.1079/BER2006441
- Marouf, A.E. 2022. Efficacy of mandarin crust oil, marigold extract and their nanoemulsions on Spodoptera littoralis (Boisd.) larvae. Pakistan Journal of Biological Sciences, 25(8): 688–697. https://doi.org/10.3923/pjbs.2022.688.697
- Nahak, G. & Sahu, K. 2017. Bio-controlling effect of leaf extract of Tagetes patula L. (Marigold) on growth parameters and diseases of tomato. Pakistan Journal of Biological Sciences, 20(1): 12–19. https://doi.org/10.3923/pjbs.2017.12.19
- Niu, Y., Han, S., Wu, Z., Pan, C., Wang, M., Tang, Y., Zhang, Q., Tan, G. & Han, B. 2022. A push–pull strategy for controlling the tea green leafhopper (Empoasca flavescens) using semiochemicals from Tagetes erecta and Flemingia macrophylla. Pest Management Science, 78(6): 2161–2172. https://doi.org/10.1002/ps.6840
- Pandey, I.B., Bharati, V. & Mishra, S.S. 2003. Effect of maize (Zea mays) - based intercropping systems on maize yield and associated weeds under rainfed condition. Indian Journal of Agronomy, 48(1): 30–33. https://doi.org/10.59797/ija.v48i1.3032
- Punyawardena, B.V.R. 2010. Climate of the dry zone of Sri Lanka. In: Soils of the Dry Zone of Sri Lanka, Special Publication 7: 9–26.
- Salinas-Sánchez, D.O., Aldana-Llanos, L., Valdés-Estrada, M.E., Gutiérrez-Ochoa, M., Valladares-Cisneros, G. & Rodríguez-Flores, E. 2012. Insecticidal activity of Tagetes erecta extracts on Spodoptera frugiperda. Florida Entomologist, 95(2): 428–432. https://doi.org/10.1653/024.095.0225
- Schmuck, R., Tornier, I., Bock, K.D., Waltersdorfer, A. & Künast, C. 1997. A semi-field testing procedure using the ladybird beetle Coccinella septempunctata L. for assessing pesticide effects. Journal of Applied Entomology, 121(1–5): 111–120. https://doi.org/10.1111/j.1439-0418.1997.tb01380.x
- Siddig, A.A., Ellison, A.M., Ochs, A., Villar-Leeman, C. & Lau, M.K. 2016. How do ecologists select and use indicator species to monitor ecological change? Ecological Indicators, 60: 223–230. https://doi.org/10.1016/j.ecolind.2015.06.036
- Singh, K.P. & Prakash, C. 2022. Benefits of intercropping with flower crops – a research review article. Progressive Agriculture, 22(2): 178–189. https://doi.org/10.5958/0976-4615.2022.00032.1
- Singhamuni, S.A.A. & Hemachandra, K.S. 2013. Study of the interactions among Cruciferaceae crops, cabbage-feeding Lepidopterans and their egg parasitoids. Tropical Agricultural Research, 25(1): 120–126. https://doi.org/10.4038/tar.v25i1.8035
- Singhamuni, S.A.A., Hemachandra, K.S. & Warnasooriya, P.G.A.S. 2021. Egg parasitoids of cabbage caterpillars in Sri Lanka: a search for biocontrol agents. Journal of Agricultural Sciences – Sri Lanka, 16(1): 174–181. https://doi.org/10.4038/jas.v16i1.9194
- Toribio-Hernandez, E. & Grande-Romero, Y.C. 2020. Bioinsecticidal effect of Tagetes erecta (Asteraceae) on the pine sawfly Zadiprion vallicola. Madera y Bosques, 26(1): 1-8. https://doi.org/10.21829/myb.2020.2611564
- Vasudevan, P., Kashyap, S. & Sharma, S. 1997. Tagetes: a multipurpose plant. Bioresource Technology, 62(1): 29–35. https://doi.org/10.1016/S0960-8524(97)00101-6
