Effect of different input management on weed composition, diversity and density of corn field

Document Type : Scientific - Research

Authors

• Surur Khoramdel
• Alireza Koocheki
• Mahdi Nassiri Mahallati

10.22067/jag.v1i2.2677

Abstract

In order to investigate the effects of input intensity on species diversity, composition and density of weeds in corn (Zea mays L.), an experiment was conducted based on a randomized complete block design with three replications at the Agricultural Research Station, Ferdowsi University of Mashhad, Iran during the year 2009. Treatments included low input, medium input and high input systems. Low input received 30 tonha-1or 30 tonha-1 compost, zero tillage and hand weeding (twice). Medium input was based on 15 tonha-1 manure, 150 kgha-1 urea as chemical fertilizer, twice tillage operations and 2, 4-D (1.5 Lha-1, at five leaves emergence) as an herbicide and hand weeding (once). High input received 300 kgha-1 urea, four tillage operations and Paraquat (2 Lha-1, after planting) and 2, 4-D (1.5 Lha-1, at five leaves emergence). Manure and compost were applied in the planting time. Weed samplings were done in three stages (early, mid and late growing season). Results indicated that the highest and the lowest weed species diversity and density were observed in low input based on manure and high input systems, respectively. The highest range of weed relative density was obtained for black nightshade (Solanum nigrum) with 9.09-75.00%. The highest number of species was observed in low input based on manure. Also, management practices affected weed dry matter and diversity indices. The highest and the lowest amounts of weed dry matter were observed in low input based on manure and high input systems, respectively. In the first, second and the third stages of sampling, the maximum and the minimum amounts of Margalef index were observed in low input based on manure (with 5.3, 5.4 and 3.3, respectively) and high input systems (with 0.8, 2.3 and 2.6, respectively). In the first, second and the third stages of sampling, the highest and the lowest values of Shannon index were observed in low input based on manure (with 0.6, 0.7 and 0.5 respectively) and high input (with 0.1, 0.4 and 0.3 respectively) systems. Weed chemical control, intensive tillage operation and high corn density reduced weed number and dry matter in high input only.

Keywords

• Management practice
• Margalef index
• Shannon index

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References

Alimoradi, L., Koocheki, A., Nassiri Mahallati, M., Zarea Feyzabadi, A., 2007. Weed seed bank dynamics under

various rotations and field production resources. Iranian. J. Field. Crop. Res. 4(2), 281-290. (In Persian)

2- Anderson, R.L., 1997. Cultural systems can reduce reproductive potential of winter annual grasses. Weed Tech. 11,

608-613.

3- Baberi, P.,Cozzani, A., Macchia, M., Bonari, E., 1998. Size sample and composition of the weed seed bank under

different management systems for continuous maize cropping. Weed Tech. 38, 319-334.

4- Ball, D.A., 1992. Weed seedbank response to tillage, herbicide and crop rotation sequence. Weed Sci. 40, 654-656.

5- Baskin, C.C., Milberrg, P., Andersson, L., Baskin, J.M., 2004. Germination ecology of seeds of the annual weeds

Capsella bursa-pastoris and Descurainia sophia originating from high northern latitudes. Weed Res. 44, 60-68.

6- Benoit, D.L., Derksen, D.A., Panneton, B., 1992. Innovative approach to seedbank studies. Weed Sci. 40, 660-669.

7- Cainxinhas, M.L., Jeronimo, A., Rocha, F., Leitao, A., 1998. Relationship between the seedbank and actual weed

flora in one agricultural soil in the Tapada da Ajuda (Lisboa). In: "Aspects of Applied Biology 51, Weed

Seedbanks: Determination, Dynamics and Manipulation" (Eds. Champion, G.T., Grundy, A.C., Jones, N.E.,

Marshall, E.J.P., and Froud-Williams R.J.). pp. 51-57. Publ. Association of Applied Biologists, C/O Horticulture

Research International Wellesbourne, Warwick, UK.

8- Cardina, J., Norquay, H.M., 1997. Seed production and seedbank dynamics in subthreshold Velvetleaf population.

Weed Sci. 45, 85-90.

9- Clay, S.A., Aguilar, I., 1998. Weed seedbanks and corn growth following continuous corn or alfalfa. Agron. J. 90,

813-818.

10- Clements, D.R., Benoit, D.L., Murphy, S.D., and Swanton, C.J., 1996. Tillage effects on weed seed return and seed

bank composition. . Weed Sci. 44, 312-313.

11- Cousens, R., Mortimer, M., 1995. Dynamics of Weed Population. Cambridge University Press, Cambridge, Great

Britaih.

12- Daglas, D.B., 1995. Influence of tillage systems on weed population dynamics and management in corn and

تأثیر نظامهای زراعی با نهادههای مختلف بر تنوع، ترکیب و تراکم علف های هرز در ذرت 9

soybean in the central USA. Crop Sci. 35, 1247-1258.

13- Dekker, J., 1997. Weed diversity and weed management. Weed Sci. 43, 357-363.

14- Derksen, D.A., Thomas, A.G., Lafond, G.P., Loeppky, H.A., Swanton, C.J., 1995. Impact of post-emergence

herbicides on weed community diversity within conservation-tillage systems. Weed Res. 35, 311-320.

15- Doucet, C., Hamill, A.C., 1999. Separating the effects of crop rotation from weed management on weed density

and diversity. Weed Sci. 47, 729-735.

16- Froud-Williams, R.J., 1988. Changes in weed flora with different tillage and agronomic management systems. In:

Weed Management in Agroecosystems: Ecological Approaches. Altieri, M.A., Liebman, M. (Eds.). pp. 140-147.

Boca Raton, Publ. CRC. Press.

17- Giovanni Fontana, G., Ugland, K.I., Gray, J.S., Willis, T.J., Abbiati, M., 2008. Influence of rare species on beta

diversity estimates in marine benthic assemblages. J. Exp. Mar. Biol. Ecol. 366, 104–108.

18- Gliessman, S.R., 1990. Agroecology: Researching the Ecological Basis for Sustainable Agriculture. Springer-

Verlag, New York. 380 pp.

19- Gunsolus, J.L., 1990. Mechanical and cultural weed control in corn and soybean. Am. J. Alt. Agron. 5, 114-119.

20- Hume, L., 1988. Long-term effects of 2,4-D application on plants, herbicide avoidance by Chenopodium album and

Thalaspi arvense. Can. J.Bot. 66, 230-235.

21- Izsak, I., Papp, L., 2000. A link between ecological diversity indices and measures of biodiversity. Ecol. Model.

130, 151–156

22- Legere, A., Stevenson, F.C., 2002. Residual effects of crop rotation and weed management on a wheat test crop

and weeds. Weed Sci. 50, 101-111.

23- Mahn, E.G., 1984. Structural changes of weed communities and population. Vegetation, 58, 79-85.

24- Milberg, P., 1997. Weed seed germination after short- term light exposure: germination rate, photon fluence

response and interaction with nitrate. Weed Res. 37, 157-164.

25- Murphy, S.D., Yadula, Y.Y., Weise, S.F., Swanton, C.J., 1996. Effect of planting patterns on intra row cultivation

and competition between corn and late emerging weeds. Weed Sci. 94: 865-870.

26- Nassiri Mahallati, M., Koocheki, A., Rezvani Moghaddam, P., Beheshti, A., 2001. Agroecology. Ferdowsi

University of Mashhad Publication. (In Persian)

27- Navarrete, L., Fernandez Quintanilla, C., 1996. The influence of crop rotation and soil tillage on seed population

dynamics of Avena fatua and Avena ludoviciana. Weed Res. 36, 123-1310.

28- Norozzadeh, S., Rashed Mohassel, M.H., Nassiri Mahallati, M., Koocheki, A., Abbaspour, M., 2009. Evaluation of

species, functional and structural diversity of weed in wheat fields of Northern, Southern and Razavi KLhorasan

provinces. Iranian. J. Field. Crop. Res., 6(2), 471-485. (In Persian)

29- Poggio, S.L., Satorre, E.L., de la Fuente, E.B., 2004. Structure of weed communities occuring in pea and wheat

crops in the Rolling Pampa (Argantina). Agric. Ecosys. Environ. 103, 225-235.

30- Proost, R.T., Shelley, K.B., Postle, J.K., 1998. Integrated Weed Management. University of Wisconsin Extension

Cooperative Extension.

31- Rashed Mohassel, M.H., and Banayan Aval, M., 1996. Weeds and their Control. Ferdowsi University of Mashhad

Publication. (In Persian)

32- Salas, M.L., Hickman, M.V., Huber, D.M., Schreiber, M.M., 1997. Influence of nitrate and ammonium nutrition on

the growth of giant foxtail (Setaria faberi). Weed Sci. 45, 664-669.

33- Schreiber, M.M., 1992. Influence of tillage, crop rotation and weed management on giant foxtail (Setaria faberi)

population dynamics and crop yield. Weed Sci. 40, 645-653.

34- Sterenson, F.C., Legere, A., Simard, R.R., Angers, D.A., Pague, D., Lafond, J., 1997. Weed species diversity in

spring- barley varies with crop rotation and tillage, not with nutrient source. Weed Sci. 45, 798-806.

35- Streibig, J.C., Andreasen, C., 1993. Crop management affects the community dynamics of weeds. Proceedings of

the Brighton Crop Protection Conference Weeds. Pp. 487-494. Brighton.

36- Swanton, C.J., Shresta, A., Roy, R.C., Ball-Coelho, B.R., Knezevic, S.Z., 1999. Effect of tillage systems, N and

cover crop on the composition of weed flora. Weed Sci. 47: 454-461.

37- Weaver, S.E., 1985. Geographic spread of Daturea stramonium in association with soybean and maize in Ontario,

Canada. Proceedings of the 1985 British Crop Rotation Conference. Weeds, pp. 403-410.

38- Wruck, M.A., Arnold, W.E., 1985. Weed species distribution as influenced by tillage and herbicide. Weed Sci. 33,

853-856.

39- Yin, L., Cai, Z., Zhong, H., 2006. Changes in weed community diversity of maize crops due to long-term

fertilization. J. Crop Prot. 25: 910-914.