Allelopathic effect of Oryza sativa L. (Rice) straw on Echinochloa crus-galli L. (Barnyard grass) and Ludwigia octovalvis (Primrose-willow)

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Research Paper 09/07/2023
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Allelopathic effect of Oryza sativa L. (Rice) straw on Echinochloa crus-galli L. (Barnyard grass) and Ludwigia octovalvis (Primrose-willow)

Bernard B. Balderas, Precelita L. Osillos
Int. J. Biosci.23( 1), 115-131, July 2023.
Certificate: IJB 2023 [Generate Certificate]

Abstract

This experimental research determined the allelopathic effects of Oryza sativa L. straw filtrate and fine cuttings on the seed germination, seedling emergence, growth, and dry weight of Echinochloa crus-galli L. and Ludwigia octovalvis. It compared the average percent inhibition of Oryza sativa L. (rice) straw fine cuttings treatments against the positive and negative treatments. It employed the Completely Randomized Design (CRD) using five different treatments for each of the two weeds and was conducted under laboratory conditions and improvised greenhouse. All data were analyzed using appropriate statistical tools. Findings of the study reveal that the Oryza sativa L. straw filtrate can inhibit the germination of Echinochloa crus-galli L. and Ludwigia octovalvis seeds. Similarly, the rice straw fine cutting soil mix reduced the seedling emergence, height, leaf number, leaf area, and dry weight of the two weeds. The seed germination and seedling emergence were found to be significantly associated with the treatments. The allelopathic effects of the treatments were significantly different along emergence, growth, and dry weight of the weeds. The highest concentration of Oryza sativa L. straw fine cuttings (30 g) indicated the greatest inhibitory effects. The study concluded that the rice straw filtrate and fine cuttings can potentially inhibit the germination and growth of Echinochloa crus-galli L. and Ludwigia octovalvis seeds. It was recommended to further establish evidences about the inhibitory effects of rice straw wastes using field trials. The use of rice straw wastes was recommended to be integrated as components of environment-friendly weed control and management practices.

VIEWS 157

Agresti A, Franklin C. 2014. Statistics: The art of learning from data (3rd Ed.). Pearson.

Agresti A. 2013. Categorical data analysis (3rd ed.). Wiley.

Ahn JK, Chung IM. 2010. Allelopathic potential of rice hulls on germination and seedling growth of barnyard grass. Agron J 92 (6), 1162-1167.

Ahn JK, Hahn SJ, Kim JT, Khanh TD, Chung IM. 2005. Evaluation of allelopathic potential among rice (Oryza sativa L.) germplasm for control of Echinochloa crus-galli L.P. Beauv in the field. Crop Protection 24(5), 413-419.

Alam MA, Hakim MA, Juraimi AS, Rafii MY, Hasanmm, Aslani F. 2018. Potential allelopathic effects of rice plant aqueous extracts on germination and seedling growth of some rice field common weeds. Italian Journal of Agronomy 134-140.

Alsaadawi IS. 2001. Allelopathic influence of decomposing wheat residues in agro-ecosystems. J Crop Prod 4(2), 185-196.

Amb MK, Ahluwalia AS. 2016. Allelopathy: Potential role to achieve new milestones in rice cultivation. Rice Science 23(4), 165-183.

Ampong-Nyarko K, De Datta SK. 2010. A handbook for weed control in rice. International Rice Research Institute.

Aquino R. 2023. Forecasting Volume of Corn Production through Neural Network Model: A Post-harvest Monitoring Tool; IJB, V22, N5, May, P25-34

Asaduzzaman M, Islammm, Sultana S. 2011. Allelopathy and allelochemicals in rice weed management. Bangl Res Pub J 4(1), 1-14.

Baltazar AM. 2017. Herbicide‐resistant weeds in the Philippines: Status and resistance mechanisms. Weed Biology and Management 17(2), 57-67.

Basile A, Sorbo S, Giordano S, Ricciardi L, Ferrara S, Montesano D, Ferrara L. 2000. Antibacterial and allelopathic activity of extract from Castanea sativa leaves. Fitoterapia 71, S110-S116.

Batish DR, Setia N, Singh HP, Kohli RK. 2004. Phytotoxicity of lemon-scented eucalypt oil and its potential use as a bioherbicide. Crop Protection 23(12), 1209-1214.

Bhadoria P. 2011. Allelopathy: A natural way towards weed management. Am. J. Exp. Agric 1, 7-20.

Bo AB, Kim JD, Kim YS, Sin HT, Kim HJ, Khaitov B, Choi JS. 2019. Isolation, identification, and characterization of Streptomyces metabolites as a potential bioherbicide. Plos one 14(9), e0222933.

Bouillantm L, Jacoud C, Zanela I, Favre-Bonvin J, Bally R. 1994. Identification of 5-(12-heptadecenyl)-resorcinol in rice root exudates. Phytochemistry 35(3), 768-771.

Brown EO, Ebora RV, Decena FLC. 2018. The current state, challenges and plans for Philippine agriculture. FFTC Agricultural Policy Platform (FFTC-AP).

Burgos NR, Ronald ET. 1996. Weed control and sweet corn (Zea mays var. rugosa) response in a no-till system with cover crops. Weed Sci 44, 355-361.

Cai H, Al-Fayez M, Tunstall RG, Platton S, Greaves P, Steward WP, Gescher AJ. 2005. The rice bran constituent tricin potently inhibits cyclooxygenase enzymes and interferes with intestinal carcinogenesis in Apc (Min) mice. Mol Cancer Ther 4, 1287-1292.

Cheema Z, Farooq M, Khaliq A. 2013. Application of allelopathy in crop production: Success story from Pakistan, in Allelopathy, eds Z. A. Cheema, M. Farooq, and A. Wahid (Berlin Heidelberg: Springer-Verlag Press) 113-143.

Cheema ZA, Khaliq A, Saeed S. 2014. Weed control in maize (Zea mays L.) through sorghum allelopathy. J. Sustain. Agric 23, 73-86. DOI: 10.1300/J064v23n04_07.

Cheema ZA, Khaliq A. 2010. Use of sorghum allelopathic properties to control weeds in irrigated wheat in a semi-arid region of Punjab. Agric. Ecosyst. Environ 79, 105-112. DOI: 10.1016/S0167-8809(99)00140-1

Cheng F, Cheng Z. 2015. Research Progress on the use of plant allelopathy in agriculture and the physiological and ecological mechanisms of allelopathy. Front Plant Sci  6, 1020. http://europepmc.org/articles/PMC4647110

Chou CH, Chang FJ, Oka HI. 1991. Allelopathic potential of wild rice Oryza perennis. Taiwania 36, 201-210.

Chou CH, Chiang YC, Cheng HH, Farrow FO. 1982. Transformation of 15N-enriched nitrogen fertilizer during rice straw decomposition in submerged soiL. Bot Bull Acad Sin 23, 119-133.

Chou CH, Lin HJ. 1976. Autoinhibition mechanism of Oryza sativa: 1. Phytotoxic effect of decomposing rice residue in soi L. J Chem Ecol 2(3), 253-367.

Chou CH, Lin TJ, Kao CI. 1977. Phytotoxins produced during decomposition of rice stubbles in paddy soil and their effect on leachable nitrogen. Bot Bull Acad Sin 18, 45-60.

Chou CH. 1990. The role of allelopathy in agro-ecosystems: Studies from tropical Taiwan. In: Gliessman S R. Agro-ecology: Researching the Ecological Basis for Sustainable Agriculture. Springer-Verlag 104-121.

Chung IM, Ahn JK, Yun SJ. 2001. Assessment of allelopathic potential of barnyard grass (Echinochloa crus-galli) on rice (Oryza sativa L.) cultivars. Crop protection 20(10), 921-928.

Chung IM, Hahn SJ, Ahmad A. 2013. Confirmation of potential herbicidal agents in hulls of rice, Oryza sativa. J Chem Ecol 31(6), 1339-1352.

Dhima KV, Vasilakoglou IB, Eleftherohorinos IG, Lithourgidis AS. 2008. Allelopathic potential of winter cereals and their cover crop mulch effect on grass weed suppression and corn development. Crop. Sci 46, 345-352. DOI: 10.2135/cropsci2005-0186.

Dilday RH, Lin J, Yan WG. 1994. Identification of allelopathy in the Usda-Ars rice germplasm collection. Aust J Exp Agric 34(7), 907-910.

Dilday RH, Lin J, Yan WG. 2009. Identification of allelopathy in the Usda-Ars rice germplasm collection. Aust J Exp Agric 34(7), pp. 907-910.

Dilday RH, Lin J, Yan WG. 2014. Identification of allelopathy in the Usda-Ars rice germplasm collection. Aust J Exp Agric 34 (7): 907-910.

Dongre PN, Rajeev M. 2007. Allelopathic effects of weeds on growth and productivity of blackgram (Phaseolus mungo Roxb.). Res. Crops 8, pp. 406-410.

Dongre PN, Yadav B. 2005. Inhibitory allelopathic effects of weed leaf leachates on seed germination of pea (Pisum sativum L.). Crop Research-Hisar 29(3), 458.

Dongre PN, Yadav BP. 2007. Allelopathic inhibition of growth and productivity of rice by some noxious weeds in pot culture. Research on Crops 8(2), 301-304.

Eladel H, Battah M, Dawa A, Abd-Elhay R, Anees D. 2019. Effect of rice straw extracts on growth of two phytoplankton isolated from a fish pond. Journal of Applied Phycology 31(6), 3557-3563.

Fahad S, Saud S, Akhter A, Bajwa AA, Hassan S, Battaglia M, Irshad I. 2021. Bio-based integrated pest management in rice: An agro-ecosystems friendly approach for agricultural sustainability. Journal of the Saudi Society of Agricultural Sciences 20(2), 94-102.

Farooq M, Hussain T, Wakeel A, Cheema ZA. 2014. Differential response of maize and mungbean to tobacco allelopathy. Exp. Agric 50, 611-624. DOI: 10.1017/S0014479714000106.

Figueredo CC, Giani A, Bird, DF. 2007. Does allelopathy contribute to cylindrospermopsis raciborskii (Cyanobacteria) bloom occurrence and geographic expansion? 1. Journal of Phycology, 43(2), 256-265.

Gavazzi C. Paris P. 2005. Allelopathy, do plants hate each other too. Informatore Agrario 56:53–55

Gealy DR, Wailes EJ, Estorninos LE, Chavez RSC. 2003. Rice cultivars different in suppression of barnyard grass (Echinochloa crus-galli) and economics of reduced propanil rates. Weed Sci 51, 601-609.

Gianessi L, Williams A. 2012. Increasing cost of labor in the Philippines promotes herbicide applications in rice. International Pesticide Benefits Case Study No 56.

Haider G, Cheema ZA, Farooq M, Wahid A. 2015. Performance and nitrogen use of wheat cultivars in response to application of allelopathic crop residues and 3, 4-dimethylpyrazole phosphate. Int. J. Agric. Biol 17, 261-270.

Han X, Chen ZH, Meng HW, Yang XL, Ahmad I. 2013. Allelopathic effect of decomposed garlic (Allium Sativum L.) stalk on lettuce (L. Sativa Var. Crispa L.). Pak. J. Bot 45, 225-233.

Heinrichs EA, Muniappan R. 2017. IPM for tropical crops: Rice. CAB Reviews 12(30), 1-30.

Hiroshi N. 2008. Effects of husk extract of wild rice spp. on seedling growth of lettuce, barnyard grass, and Eclipta thermalis. Allelop J 22(2), 391-396.

Hoang H. 2014. Three essays on rice markets and policies in Southeast Asia with a focus on rice consumption patterns in Vietnam (Doctoral dissertation, University of Missouri-Columbia).

Hua Q, Liu YG, Yan ZL, Zeng GM, Liu SB, Wang WJ, Wang QP. 2018. Allelopathic effect of the rice straw aqueous extract on the growth of Microcystis aeruginosa. Ecotoxicology and Environmental Safety 148, 953-959.

Inderjit MO, Streibig JC. 2001. Wheat (Triticum aestivum) interference with seedling growth of perennial ryegrass (Lolium perenne): Influence of density and age. Weed Technol 15, 807-812.

Inderjit, Rawat DS, Foy CL. 2014. Multifaceted approach to determine rice straw phytotoxicity. Can J Bot 82, 168-176.

Iqbal J, Cheema ZA, An M. 2007. Intercropping of field crops in cotton for the management of purple nutsedge (Cyperus rotundus L.). Plant Soil 300, 163-171. DOI: 10.1007/s11104-007-9400-8.

Jabran K, Farooq M. 2013. Implications of potential allelopathic crops in agricultural systems. In: Cheema Z A, Farooq M, Wahid A. Allelopathy Current Trends and Future Applications. Springer-Verlag 349-385.

Jabran K, Mahajan G, Sardana V, Chauhan, BS. 2015. Allelopathy for weed control in agricultural systems. Crop. Prot 72, 57-65. DOI: 10.1016/j.cropro.2015.03.004.

Jung WS, Kim KH, Ahn JK, Hahn SJ, Chung IM. 2011. Allelopathic potential of rice (Oryza sativa L.) residues against Echinochloa crus-galli. Crop Prot 23(3), 211-218.

Jung WS, Kim KH, Ahn JK, Hahn SJ, Chung IM. 2004. Allelopathic potential of rice (Oryza sativa L.) residues against Echinochloa crus-galli. Crop Prot 23(3), 211-218.

Kang PG, Kim B, Mitchell MJ. 2017. Effects of rice and rye straw extracts on the growth of a cyanobacterium, Microcystis aeruginosa. Paddy and Water Environment 15(3), 617-623.

Karikari SK. 2000. Variability between local and exotic Bambara groundnut landraces in Botswana. African Crop Science Journal 8(2), 145-152.

Karim SMR, Forzwa R. 2010. Allelopathic effects of parthenium weed on the seed germination and seedling growth of field crops. Abstracts, Annual Botanical Conference, 2009, held at Chittagong University from 9-10 pp. 38-39.

Kato-Noguchi H, Ino T. 2005. Possible involvement of momilactone B in rice allelopathy. J Plant Physiol 162(6), 718-721.

Kayode J, Ayeni JM. 2009. Allelopathic effects of some crop residues on the germination and growth of maize (Zea mays L.). Pac J Sci Technol 10, 345-349.

Khan AH, Vaishya RD. 2012. Allelopathic effects of different crop residues on germination and growth of weeds. In: Tauro P, Narwal S S. Proceedings of National Symposium on Allelopathy in Agroecosystem. India: Indian Society of Allelopathy 59-60.

Khanh TD, Chung IM, Xuan TD, Tawata S. 2015. The exploitation of crop allelopathy in sustainable agricultural production. Journal of Agronomy and Crop Science 191, 172-184.

Khanh TD, Elzaawely AA, Chung IM, Ahn JK, Tawata S, Xuan TD. 2007. Role of allelochemicals for weed management in rice. Allelop J 19(1), 85-96.

Khanh TD, Linh LH, Linh TH, Ham LH, Xuan TD. 2013. Rapid and high-precision marker assisted backcrossing to introgress the SUB1 QTL into the Vietnamese elite rice variety. J Plant Bred Crop Sci 5(2), 26-33.

Kong CH, Chen XH, Hu F, Zhang SZ. 2011. Breeding of commercially acceptable allelopathic rice cultivars in China. Pest Manag Sci 67 (9), 1100-1106.

Kong CH, Li HB, Hu F, Xu XH, Wang P. 2006. Allelochemicals released by rice roots and residues in soiL. Plant Soil, 288, 47-56.

Kong CH, Xu XH, Zhang M, Zhang SZ. 2010. Allelochemical tricin in rice hull and its aurone isomer against rice seedling rot disease. Pest Manag Sci 66(9), 1018-1024.

Le Thi H, Lin CH, Smeda RJ, Leigh ND, Wycoff WG, Fritschi FB. 2014. Isolation and identification of an allelopathic phenylethylamine in rice. Phytochemistry 108, 109-121.

Li L, Fu W, He W, Liu H. 2010. Study on allelopathic effects of rice and wheat soil-like substrate on several plants. 38th COSPAR Scientific Assembly 38, 5.

Li ZH, Wang Q, Ruan X, Pan CD, Jiang DA. 2010. Phenolics and plant allelopathy. Molecules 15, 8933-8952. DOI: 10.3390/molecules15128933.

Lin J, Smith RJ, Dilday RH. 1992. Allelopathic activity of rice germplasm on weed. In: Proceedings in Southern Weed Science Society 45, 99.

Lin J, Smith RJ, Dilday RH. 2009. Allelopathic activity of rice germplasm on weed. In: Proceedings in Southern Weed Science Society 45, 99.

Lotz Lap, Van der Weide RY, Horeman GH, Joosten LTA. 2010. Weed management and policies: From prevention and precision technology to certifying individual farms. In: Proceedings 2010 12th EWRS (European Weed Research Society) Symposium, Wageningen 2-3.

Macias FA, Marin D, Oliveros-Bastidas A, Varela RM, Simonet A. M, Carrera C. 2012. Allelopathy as a new strategy for sustainable ecosystems development. BioL. Sci. Space 17, 18–23. DOI: 10.2187/bss.17.18.

Macias FA, Oliveros-Bastidas A, Marin D, Castellano D, Simonet AM, Molinillo JM. 2008. Degradation studies on benzoxazinoids. Soil degradation dynamics of 2, 4-dihydroxy-7-methoxy-(2H)-1,4-benzoxazin-3(4H)-one (DIMBOA) and its degradation products, phytotoxic allelochemicals from gramineae. J. Agric. Food Chem 52, 6402-6413.

Mahmood A, Cheema ZA, Mushtaq MN, Farooq M. 2013. Maize-sorghum intercropping systems for purple nutsedge management. Arch. Agron Soil Sci 59, 1279-1288. DOI: 10.1080/036503.

Mari M, Iori R, Leoni O, Archi A. 1993. In vitro activity of glucosinolates derived isothiocyanates against post-harvest fruit pathogens. Ann Appl Biol 123(1), 155-164.

Masum SM, Hossain MA, Akamine H, Sakagami JI, Ishii T, Konno T, Nakamura I. 2019. Comparison study of allelochemicals and bispyribac-sodium on the germination and growth response of Echinochloa crus-galli L.L. Journal of Plant Growth Regulation 38(2), 501-512.

Mattice JD, Dilday RH, Gbur EE, Skulman BW. 2008. Barnyard grass growth inhibition with rice using high-performance liquid chromatography to identify rice accession activity. Agronomy Journal 93, 8-11.

Mayton HS, Olivie RC, Vaughn SF, Loria R. 1996. Correlation of fungicide activity of Brassica species with allyl isothiocyanate production in macerated leaf tissue. Phytopathol 86(3), 267-271.

Medlin LK, Cembella AD. 2013. Biodiversity of harmful marine algae pp. 470-484. Waltham, MA: Academic Press. In Encyclopedia of Biodiversity, Second Edition V. 1 (pp. 470-484). Academic Press.

Mehdizadeh M, Mushtaq W. 2020. Biological control of weeds by allelopathic compounds from different plants: A bioherbicide approach. In Natural Remedies for Pest, Disease and Weed Control (pp. 107-117). Academic Press.

Melander B. 2012. Optimization of the adjustment of a vertical axis rotary brush weeder for intra‐row weed control in row crops. Journal of Agricultural Engineering Research 68, 39-50.

Melander B. 2014. Non‐chemical weed control: New directions in. In: Encyclopedia of Plant and Crop Science (ed. Robert M Goodman) 3. http://www. dekker.com

Moraes PVD, Agostinetto D, Vignolo GK, Santos LS, Panozzo LE. 2009. Cover crop management and weed control in corn. Planta Daninha 27, 289-296. DOI: 10.1590/S0100-83582009000200011.

Narwal SS. 2010. Weed management in rice: Wheat rotation by allelopathy. Crit Rev Plant Sci 19, 249-266.

Nirmal Kumar JI, Amb MK, Bora A. 2010. Chronic response of Anabaena fertilissima on growth, metabolites and enzymatic activities by chlorophenoxy herbicide. Pest Biochem Physiol 98(2), pp. 168-174.

Olofsdotter M, Jensen LB, Courtois B. 2012. Improving crop competitive ability using allelopathy: An example from rice. Plant Breeding 121(1), 1-9.

Olofsdotter M, Navarez D, Moody K. 2010. Allelopathy potential in rice (Oryza sativa L.) germplasm. Annals of Applied Biology 127, 543-560.

Olofsdotter M, Navarez D, Rebulanan M, Streibig JC. 1999. Weed-suppressive rice cultivars: Does allelopathy play a role? Weed Res 39(6), 441-454.

Olofsdotter M, Navarez D, Resbulanan M. 2007. Weed-suppressing rice cultivars does allelopathy play a role? Weed Research 39, 441-68.

Prince EK, Myers TL, Kubanek J. 2008. Effects of harmful algal blooms on competitors: Allelopathic mechanisms of the red tide dinoflagellate Karenia brevis. Limnology and Oceanography 53(2), 531-541.

Putnam AR. 1988. Allelochemicals from plants as herbicides. Weed Technol 2(4), 510-518.

Ravi V, Mohankumar CR. 2007. Cassava-based multiple cropping systems. In: Janick J. Horticultural Reviews. John Wiley & Sons 355-500.

Reeves DW, Price AJ, Pattersonmg. 2015. Evaluation of three winter cereals for weed control in conservation-tillage non-transgenic cotton. Weed TechnoL. 19, 731-736. DOI: 10.1614/WT-04-245R1.1.

Rimando AM, Olofsdotter M, Dayan FE, Duke SO. 2001. Searching for rice allelochemicals: An example of bioassay guided isolation. Agron J 93, 16-20.

Sanjereheimm, Jafari M, Mataji A, Meybodi NB, Bihamta MR. 2011. Facilitative and competitive interactions between plant species (an example from Nodushan rangelands, Iran). Flora 206(7), 631-637.

Scasta JD, Trostle CL, Foster MA. 2012. Evaluating alfalfa (Medicago sativa L.) cultivars for salt tolerance using laboratory, greenhouse and field methods. Journal of Agricultural Science 4(6).  DOI: 10.5539/jas.v4n6p90

Seal AN, Pratley JE, Haig T, An M. 2004. Identification and quantification of compounds in a series of allelopathic and non-allelopathic rice root exudates. J Chem Ecol 30(8), 1647-1662.

Shende NV, Bagde NT. 2014. Economic consequences of pesticides use in paddy cultivation. Am Int J Res Hum Arts Soc Sci 4, 25-33.

Shibayama H. 2010. Weeds and weed management in rice production in Japan. Weed Biology and Management 1, 53-60.

Silva RMG, Brante RT, Santos VHM, Mecina GF, Silva LP. 2014. Phytotoxicity of ethanolic extract of turnip leaves (Raphanus Sativus L.). Biosci. J 30, 891-902.

Singh HP, Batish, DR, Kohli RK. 2013. Allelopathic interactions and allelochemicals: New possibilities for sustainable weed management. Crit. Rev. Plant Sci. 22, 239-311. DOI: 10.1080/713610858.

Singh S, Chhokar RS, Gopal R, Ladha JK, Gupta RK, Kumar V, Singh M. 2005. Integrated weed management: A key to success for direct-seeded rice in the Indo-Gangetic plains. Integrated Crop and Resource Management in the Rice–Wheat System of South Asia. Los Banos, Philippines: International Rice Research Institute 261-278.

Subbarao GV, Ito O, Sahrawat KL, Berry WL, Nakahara K, Ishikawa T, Watanabe T, Suenaga K, Rondon M, Rao IM. 2006. Scope and strategies for regulation of nitrification in agricultural systems challenges and opportunities. Crit Rev Plant Sci 25(4), 303-335.

Suikkanen S, Fistarol GO, Granéli E. 2005. Effects of cyanobacterial allelochemicals on a natural plankton community. Marine Ecology Progress Series 287, 1-9.

Sumudunie HG, Jayasuriya KMG. 2019. Seed dormancy and germination of seven rice field weeds from Sri Lanka. Taiwania 64(3).

Takeuchi Y, Kawaguchi S, Yoneyama K. 2011. Inhibitory and promotive allelopathy in rice (Oryza sativa L.). Weed Biol Man 1, 147-156.

Tallada JG. 2019. Precision agriculture for rice production in the Philippines. In International workshop on ICTs for precision agriculture (p. 79).

Tesio F, Ferrero A. 2010. Allelopathy: A chance for sustainable weed management. Int J Sust Dev World Ecol 17(5), pp. 377-389.

Vicencio EJM, Buot Jr IE. 2017. Aquatic weed flora on the Southwest Lakeside of Laguna De Bay. J Wetl Biodivers 7, 75-90.

Waller GR. Einhellig FA. 1999. Overview of allelopathy in agriculture, forestry, and ecology. Biodiversity and Allelopathy. Taipai: Academia Sinica 221-245.

Wang XL, Zhang ZY, Xu XM, Li G. 2019. The density of barnyard grass affects photosynthesis and physiological characteristics of rice. Photosynthetica 57(2), 705-711.

Wangcm, Jhan YL, Yen LS, Su YH, Chang CC, Wu YY. 2013. The allelochemicals of litchi leaf and its potential as natural herbicide in weed controL. Allelopathy J 32, 157-173.

Wezel A, Casagrande M, Celette F, Vian JF, Ferrer A, Peigne J. 2014. Agroecological practices for sustainable agriculture. A review. Agron. Sustain. Dev 34, 1-20. DOI: 10.1007/s13593-013-0180-7

Wortman SE, Drijber RA, Francis CA, Lindquist JL. 2013. Arable weeds, cover crops, and tillage drive soil microbial community composition in organic cropping systems. AppL. Soil EcoL. 72, 232-241. DOI: 10.1016/j.apsoiL.2013.07.014

Yildirim E, Guvenc I. 2008. Intercropping based on cauliflower: More productive, profitable and highly sustainable. Eur. J. Agron. 22, 11-18. DOI: 10.1016/j.eja.2003.11.003

Zeng R. 2013. Allelopathy in Chinese ancient and modern agriculture, in Allelopathy in Sustainable Agriculture and Forestry, eds R. Zeng, A. Mallik and S. Luo (New York: Springer New York Press) 39-59. DOI: 10.1007/978-0-387-77337-7_3.