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Journal of Pest Science

, Volume 88, Issue 2, pp 427–438 | Cite as

Ecological significance of rice (Oryza sativa) planting density and nitrogen rates in managing the growth and competitive ability of itchgrass (Rottboellia cochinchinensis) in direct-seeded rice systems

  • Tahir Hussain AwanEmail author
  • Pompe C. Sta Cruz
  • Bhagirath Singh Chauhan
Original Paper

Abstract

Current understanding is that high planting density has the potential to suppress weeds and crop–weed interactions can be exploited by adjusting fertilizer rates. We hypothesized that (a) high planting density can be used to suppress Rottboellia cochinchinensis growth and (b) rice competitiveness against this weed can be enhanced by increasing nitrogen (N) rates. We tested these hypotheses by growing R. cochinchinensis alone and in competition with four rice planting densities (0, 100, 200, and 400 plants m−2) at four N rates (0, 50, 100, and 150 kg ha−1). At 56 days after sowing (DAS), R. cochinchinensis plant height decreased by 27–50 %, tiller number by 55–76 %, leaf number by 68–84 %, leaf area by 70–83 %, leaf biomass by 26–90 %, and inflorescence biomass by 60–84 %, with rice densities ranging from 100 to 400 plants m−2. All these parameters increased with an increase in N rate. Without the addition of N, R. cochinchinensis plants were 174 % taller than rice; whereas, with added N, they were 233 % taller. Added N favored more weed biomass production relative to rice. R. cochinchinensis grew taller than rice (at all N rates) to avoid shade, which suggests that it is a “shade-avoiding” plant. R. cochinchinensis showed this ability to reduce the effect of rice interference through increased leaf weight ratio, specific stem length, and decreased root-shoot weight ratio. This weed is more responsive to N fertilizer than rice. Therefore, farmers should give special consideration to the application timing of N fertilizer when more N-responsive weeds are present in their field. Results suggest that the growth and seed production of R. cochinchinensis can be decreased considerably by increasing rice density to 400 plants m−2. There is a need to integrate different weed control measures to achieve complete control of this noxious weed.

Keywords

Biomass partitioning Crop–weed competition Light Shade Seed rate Weeds suppression 

Notes

Acknowledgments

The authors would like to thank Bill Hardy and Grace Cañas for providing comments on the manuscript.

References

  1. Ampong-Nyarko K, De Datta SK (1993) Effects of light and nitrogen and their interaction on the dynamics of rice-weed competition. Weed Res 33:1–8CrossRefGoogle Scholar
  2. Andersson, Lundegardh B (1999) Growth of field horsetail under low light and low nitrogen conditions. Weed Sci 47:41–46Google Scholar
  3. Bakar BH, Nabi LNA (2003) Seed germination, seedling establishment and growth patterns of wrinklegrass (Ischaemum rugosum Salisb.). Weed Biol Manag 3:8–14CrossRefGoogle Scholar
  4. Blackshaw RE, Brandt RN (2008) Nitrogen fertilizer rate effects on weed competitiveness is species dependent. Weed Sci 56:743–747CrossRefGoogle Scholar
  5. Blackshaw RE, Brandt RN, Janzen HH, Entz T, Grant CA, Derksen DA (2003) Differential response of weed species to added nitrogen. Weed Sci 51:532–539CrossRefGoogle Scholar
  6. Bolfrey-Arku GEK, Chauhan BS, Johnson DE (2011) Seed germination ecology of itchgrass (Rottboellia cochinchinensis). Weed Sci 59:182–187CrossRefGoogle Scholar
  7. Bonifas KD, Walters DT, Cassman KG, Lindquist JL (2005) Nitrogen supply affects root:shoot ratio in corn and velvetleaf (Abutilon theophrasti). Weed Sci 53:670–675CrossRefGoogle Scholar
  8. Calvo G, Merayo A, Rojas CE (1996) Diagnóstico de la problemática de la caminadora (Rottboellia cochinchinensis) en dos zonas productoras de maíz de la provincia de Guanacaste, Costa Rica. Manejo Int Plagas 41:50–52Google Scholar
  9. Caton BP, Foin TC, Hill JE (1997) Phenotypic plasticity of Ammannia spp. in competition with rice. Weed Res 37:33–38CrossRefGoogle Scholar
  10. Chauhan BS (2012) Weed ecology and weed management strategies for dry-seeded rice in Asia. Weed Technol 26:1–13CrossRefGoogle Scholar
  11. Chauhan BS (2013) Growth response of itchgrass (Rottboellia cochinchinensis) to water stress. Weed Sci 61:98–103CrossRefGoogle Scholar
  12. Chauhan BS, Abugho SB (2013) Effects of water regime, nitrogen fertilization, and rice plant density on growth and reproduction of lowland weed Echinochloa crus-galli. Crop Prot 54:142–147CrossRefGoogle Scholar
  13. Chauhan BS, Johnson DE (2009) Influence of tillage systems on weed seedling emergence pattern in rainfed rice. Soil Tillage Res 106:15–21CrossRefGoogle Scholar
  14. Chauhan BS, Johnson DE (2010a) The role of seed ecology in improving weed management strategies in the tropics. Adv Agron 105:221–262CrossRefGoogle Scholar
  15. Chauhan BS, Johnson DE (2010b) Response of rice flatsedge (Cyperus iria) and barnyardgrass (Echinochloa crus-galli) to rice interference. Weed Sci 58:204–208CrossRefGoogle Scholar
  16. DFID Weeds Project (2002) Realizing sustainable weed management to reduce poverty and drudgery amongst small-scale farmers in West African Savannah. International Institute of Tropical Agriculture (IITA), IbadanGoogle Scholar
  17. Etejere EO, Ajibola IO (1990) Studies on seed germination and dormancy of itchgrass (Rottboellia cochinchinensis). Niger J Weed Sci 3:19–28Google Scholar
  18. Evans SP, Knezevic SZ, Lindquist JL, Shapiro CA (2003) Influence of nitrogen and duration of weed interference on corn growth and development. Weed Sci 51:546–556CrossRefGoogle Scholar
  19. Funk JL (2008) Differences in plasticity between invasive and native plants from a low resource environment. J Ecol 96:1162–1173CrossRefGoogle Scholar
  20. GenStat 8.0. (2005) GenStat Release 8 Reference Manual. VSN International, Oxford, p 343Google Scholar
  21. Gibson KD, Fischer AJ (2001) Relative growth and photosynthetic response of water-seeded rice and Echinochloa oryzoides (Ard.) Fritsch to shade. Int J Pest Manag 47:305–309CrossRefGoogle Scholar
  22. Gibson KD, Fischer AJ, Foin TC (2001) Shading and the growth and photosynthetic responses of Ammannia coccinnea. Weed Res 41:59–67CrossRefGoogle Scholar
  23. Gibson KD, Fischer AJ, Foin TC (2004) Compensatory responses of late watergrass (Echinochloa phyllopogon) and rice to resource limitations. Weed Sci 52:271–280CrossRefGoogle Scholar
  24. Griffin J (1991) Itchgrass (Rottboellia cochinchinensis) control options in soybean (Glycine max). Weed Technol 5:426–429Google Scholar
  25. Holm LG, Plucknett DL, Pancho JV, Herberger JP (1977) The world’s worst weeds: distribution and biology. University of Hawaii Press, Honolulu, p 609Google Scholar
  26. Huke RE, Huke EH (1997) Rice area by type of culture: South, Southeast, and East Asia. International Rice Research Institute, Los Baños, p 59Google Scholar
  27. Jordan TN, Cobel HD, Wax LM (1987) Weed control. In: Wilcox JR (ed) Soybeans: improvement, production, and uses, 2nd edn. ASA, Madison, p 449Google Scholar
  28. Knops JMH, Reinhart K (2000) Specific leaf area along a nitrogen fertilization gradient. Am Midl Nat 144:265–272CrossRefGoogle Scholar
  29. Liebman M, Gallandt ER (1997) Many little hammers: ecological approaches to management of crop-weed interactions. In: Jackson LE (ed) Ecology in agriculture. Academic Press, San Diego, pp 291–346CrossRefGoogle Scholar
  30. Liebman M, Janke RJ (1990) Sustainable weed management practices. In: Francis CA, Flora CB, King LD (eds) Sustainable agriculture in temperate zones. Wiley, New York, pp 111–143Google Scholar
  31. Marenco RA, Reis ACS (1998) Shading as an environmental factor affecting the growth of Ischaemum rugosum. Rev Bras Fisiol Veg 10:107–112Google Scholar
  32. Meksawat S, Pornprom T (2010) Allelopathic effect of itchgrass (Rottboellia cochinchinensis) on seed germination and plant growth. Weed Biol Manag 10:16–24CrossRefGoogle Scholar
  33. Migo TR, Pamplona RR, Dingkuhn M, De Datta SK (1991) Interaction of water stress and nitrogen supply on the photosynthetic parameters of two upland rice and two upland weeds. Philipp J Weed Sci 18:69–89Google Scholar
  34. Mohler CL (2001) Enhancing the competitive ability of crops. Ecological Management of Agricultural Weeds. Cambridge University Press, CambridgeGoogle Scholar
  35. NAPPO (North American Plant Protection Organization) (2003) PRA/Grains Panel Pest Fact Sheet-Rottboellia cochinchinensis (Lour.) Clayton. Pamplona, P.P.; B.L. Available at http://www.issg.org/database/species/ecology.asp. Accessed 15 Nov 2013
  36. Oyewole CI, Ibikunle BAO (2010). The germination of corn weed (Rottboellia cochinchinensis Lour Clayton) seed: induction and prevention of germination in seed. Thai J Agric Sci 43:47–54. http://www.thaiagj.org. Accessed 15 Nov 2013
  37. Phuong LT, Denich M, Vlek PLG, Balasubramanian V (2005) Suppressing weeds in direct-seeded lowland rice: effects of methods and rates of seeding. J Agron Crop Sci 191:185–194CrossRefGoogle Scholar
  38. Reynolds HL, Antonio CD (1996) The ecological significance of plasticity in root weight ratio in response to nitrogen: opinion. Plant Soil 185:75–97CrossRefGoogle Scholar
  39. Sage RF (2000) C3 versus C4 photosynthesis in rice: ecophysiological perspective. In: Sheehy JE, Mitchell PL, Hardy B (eds) Redesigning rice photosynthesis to increase yield. International Rice Research Institute, Los Baños, pp 13–35CrossRefGoogle Scholar
  40. Schwinning S, Weiner J (1998) Mechanism determining the degree of size-asymmetry in competition among plants. Oecologia 113:447–455CrossRefGoogle Scholar
  41. Singh T, Kolar JS (1993) Competitive ability of wrinklegrass (Ischaemum rugosum Salisb.) for utilization of major nutrients (NPK) in transplanted paddy. Indian J Weed Sci 25:30–35Google Scholar
  42. Smith VM, Fonseca (2001) Integrated management of itchgrass in a corn cropping system: modeling the effect of control tactics. Weed Sci 49:123–134CrossRefGoogle Scholar
  43. Tuong TP, Bouman BAM (2003) Rice production in water-scarce environments. In: Kijne JW, Barker R, Molden D (eds) Water productivity in agriculture: limits and opportunities for improvements. CABI Publishing, Wallingford, pp 53–67CrossRefGoogle Scholar
  44. Valverde BE (2003) Progress on Rottboellia cochinchinensis management. In: Labrada (ed) Weed management for developing Countries, Addendum 1. FAO Plant Production and Protection Paper 120 (www.fao.org/documents/show_cdr.asp?url_file=/DOCREP/006/Y5031)
  45. Valverde BE (2007) Status and management of grass-weed herbicide resistance in Latin America. Weed Technol 21:310–323CrossRefGoogle Scholar
  46. Valverde BE, Merayo A, Rojas CE, Alvarez T (1995). Interaction between a cover crop (Mucuna sp.), a weed (Rottboellia cochinchinensis) and a crop (maize). Proc Bright Crop Conf Weeds 197–200 Google Scholar
  47. Vourlitis GL, Kroon JL (2013) Growth and resource use of the invasive grass, pampasgrass (Cortaderia selloana) in response to nitrogen and water availability. Weed Sci 61:117–125CrossRefGoogle Scholar
  48. Weiner J, Griepentrog HW, Kristensen L (2001) Suppression of weeds by spring wheat Triticum aestivum increases with crop density and spatial uniformity. J Appl Ecol 38:784–790CrossRefGoogle Scholar

Copyright information

© Springer-Verlag Berlin Heidelberg 2014

Authors and Affiliations

  • Tahir Hussain Awan
    • 1
    • 2
    Email author
  • Pompe C. Sta Cruz
    • 2
  • Bhagirath Singh Chauhan
    • 3
  1. 1.Weed Science, Crop and Environmental Sciences DivisionInternational Rice Research Institute (IRRI)Los BañosPhilippines
  2. 2.Crop Science Cluster, College of AgricultureUniversity of Philippines Los BañosLos BañosPhilippines
  3. 3.Queensland Alliance for Agriculture and Food Innovation (QAAFI)The University of QueenslandToowoombaAustralia

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