Greener Journal of Agricultural Sciences

Excellence and Timeliness


Change Language

Arukwe and Ekeleme

Greener Journal of Agricultural Sciences

Vol. 10(2), pp. 71-85, 2020

ISSN: 2276-7770

Copyright ©2020, the copyright of this article is retained by the author(s)







Effect of cassava-sweet potato intercrops patterns and weed control methods on weed suppression.



Arukwe Udodirioha E. 1,* and Ekeleme Friday 2



1Department of Agriculture and Natural Resources, Umuahia North Local Council, Umuahia. Nigeria.

2Department of Plant Health Management, Michael Okpara University of Agriculture, P.M.B. 7267, Umudike. Nigeria.






Article No.:01282014

Type: Research



Field trials were conducted to investigate complementary weed control potential of sweet potato on cassava in 2015, 2016 and 2017 cropping seasons at the National Cereal Research Institutes’ farm, (NCRI), Amakama (07˚29′N latitude and 05˚28΄E longitude), South Eastern Nigeria. The study was laid out in a split plot arrangement in a Randomized Complete Block Design (RCBD) with three replicates. The main plots consisted of intercrop patterns which included two populations of sweet potato (10,000 and 20,000 plants ha-1) between rows of cassava, planted at 0, 4 and 8 weeks after planting cassava  (WAP), sole cassava (SC) and sole sweet potato (SS), The sub-plots were four weed control treatments viz pre-emergence application of S-metolachlor+atrazine at 1.16+1.48 kg a.i ha-1 alone (P), S-metolachlor+atrazine at 1.16+1.48 kg a.i ha-1 followed by supplementary hoe weeding at 8WAP (PHW1), three hoe weedings at 4, 8 and 12 WAP (3HW) and a weedy check (0W). Results indicated that Cassava intercropped at the same time with sweet potato at 20,000 plant ha-1 (CS200) significantly reduced weed density and dry matter compared with SC which gave the poorest weed control. Weed density and dry matter were higher with cassava+sweet potato introduced at 8 WAP at both populations (CS108 and CS208) comparable to SC. There were statistically significant differences in weed growth between the different weed control methods. PHW1 significantly suppressed weed growth as effectively as 3HW when compared to 0W. The weedy check (0W) and P recorded the poorest weed control and performance of these crops at harvest. Although weed density and drymatter was significantly reduced by CS200 and PHW1 independently, results from this study suggested that CS200 combined PHW1 could provide a sustainable integrated weed management system than sole cassava, introducing the sweet potato at 8 WAP or herbicide treatment alone in the study area.


Accepted:  29/01/2020




*Corresponding Author

Arukwe Udodirioha E.


Phone: +234-80-68294898



Seedling emergence; Cropping pattern; Pre-emergence; Intercropping; Integrated weed management




Return to Content       View [Full Article - PDF]  

[Full Article - HTML]               [Full Article - EPUB]

Post-Publication Peer-review Rundown

View/get involved, click [Peer-review]




Ahmed, N. U and Moody, K. (1980). Effect of method of seeding and weed control on weed growth and yield of two rise crops grown in sequence. Tropical Pest Management,26:303-308.


Akinpelu, A. O., Ogbonna, M. C., Asunugha, G. N., Ogbe, F. O and Emehute, J. K.U (2006).Socioeconomic evaluation of improved cassava production (NR8082) in Umudike.Root crop research division, Annual report and 2006 Research proposals. NRCRI, Umudike.


Akinyemiju, A. O. (1992). Weed control in maize with Alachlor alone and in combination with   atrazine. Nigerian Journal of Weed Science,5; 53-56.


Akobundu, I. O. (1987) Weed science in the tropics, Principles and practice. John Wiley and Sons limited. New York. Pp.522.


Amosun, J. O and Modupe, V. O. A. (2016) Influence of Groundnut Populations on Weed Suppression inCassava-Groundnut Systems.Journal of Agricultural Science, 8:5.


Chikoye, D., Fortem, L. A., Ekeleme F. and Udensi, A. E. (2009).Evaluation of Lumax for pre emergence weed control in maize in Nigeria.International Journal of Pest Management.5 (4)275 – 283).


Chikoye, D., Udensi, E. U. and Lum, A. E. (2005).Performance of a new formulation of atrazine for weed control in Maize in Nigeria. Nigerian Journal of Food, Agriculture and Environment, 4: 114-117.


Ekeleme, F., Chikoye, D. and Akobundu, I. O. (2004) Impact of natural, planted (Puerariaphaseoloides, Leucaenaleucocephala) fallow and landuse intensity on weedseedling emergence pattern and density in cassavaintercropped with maize.  Agriculture, Ecosystems and Environment, 103: 581–593.


Ekpo, T. U. U., Eniola, H. T., Udosen, U. U., and Udom, G. N. (2012). Influence of integrated weed management on cassava-maize intercrop production in humid rainforest zone, Nigeria. Nigerian Journal of Weed Science,25: 82-95.


Eneji A. E., Agboola, A. A. and Isola, O. (1995).The weed suppressive ability of sweet potato in a cassava+maize+sweet potato intercrop.Nigerian Journal of Weed Science,8: 13-18.


Etela, I. and Anyanwu, N. J. (2011).Variation in Fodder and Tuber Yields of Three Sweet Potato Varieties and the 48-h Rumen Dry Matter Degradation in N’dama Steers. American-Eurasian Journal of Agriculture and Environmental Sciences, 11 (5): 712-716.


Imeokparia, P. O. (1999). The effect of Tillage, Crop spacing and manual weeding on the performance of Rice-Sweet potato cropping sequence.NigerianJournal of Weed Science,12; 9-16.


Imoloame, E. O. (2014). The effect(s) of different weed control methods on weed infestation, growth and yield of soybeans (glycine max (l) merril) in the southern guinea savanna of Nigeria. Agrosearch, 14(2):129-143.


Isoken, T. A. (2000). Diagnostic Survey of Soil Management Techniques by Food Crop Farmer.A case study of EDO State, Nigeria.Nigerian Journal of Soil Science. 12: 22-34.


Iyagba, A. G. and Ayeni, A.O. (2000a). Efficacy of post-emergence herbicides on Guinea grass and Siam weed in cassava: Influence of rate and mode of application. Nigerian Journal of Crop, Soil and Forestry, 6: 24-37.


Iyagba, A. G. and Ayeni, A. O. (2000b). Efficacy of post-emergence herbicides on Guinea grass and Siam weed in Cassava 2: Influence of rate and time of application. Nigerian Journal of Crop, Soil and Forestry, 6: 70-81.


Kassasian, L. and Seeyave, J.(1967). Weed control in root crops grown in the West Indies.


Lavabare, E. M. (1991). Weed Control, The tropical Agriculturist.LondonMacmillian Education, pp90.


Moody, K. (1975). Weeds in shifting cultivation.PANS, 21:188–194.


Mwanga, R.O.M. and Zamora, O.B. (1989).Agronomic responses of sweet potato (Ipomoea batatas (L.) Lam) to varying levels of shade. Philippine Journal Crop Science, 14: 83-90.


Nedunchezhiyan, M., Ravindran, C.S. and Velumani, R.(2013). Weed management in root and tuber crops in India: critical Analysis. Journal of Root Crops, 39 (2): 13-20.


Njoku, D. N. and Muoneke, C.O. (2008).Effect of cowpea planting density on growth, yield and Productivity of component crops in cowpea/cassava intercropping system.Agro-Science Journal of Tropical Agriculture, Food, Environment and Extension,7 (2):106 -113.


Okeleye, K. A., Salawu R. A., Melifonwu A. A. and Ikeorgu, J. (1999).Use of low growing crops as an alternative weed control measure in cassava-based cropping system in southern Nigeria. Nigerian Journal of Weed Science,12:17-22.


Olatasan, F. O., Ezumah, H. C. and Lucas, E. O (1996) Effects of intercropping maize on the microenvironment growth and yield of cassava. Agriculture, Ecosystem and Environment, 57 (2-3):149-158.


Olorunmaiye, P. M. and Olorunmaiye, K. S. (2009).Effect of integrated weed management on weed control and yield components of maize and cassava intercrop in a southern Guinea savanna ecology of Nigeria.Australian Journal of Crop Science. 3(3):129-136.


Onochie, B. E. (1975). Critical period of weed control in cassava in Nigeria.PAN,21(1): 431-457.


Onyekwere, I. N., Nwosu, P. O., Ezenwa, M. I. S. and Odofin, A. J. (2012). Characterization, Classification and Management of Olokoro Soils Umuahia, Abia State Nigeria For Increased DioscoreaDumetorumYields.Nigerian Journal of Soil Science, 22 (1):150-157.


Ramirez, G. P. (1992). Cultivation, harvesting and storage of sweet potato products. In: Roots, Tubers, Plantains and Bananas in Animal Feeding, Animal Production and Health Paper, FAO, Rome. 95: 203- 215.


Sharma, B. M. and Dairo F. M. (1981).Ecophysiological studies on two common weeds associated with cassava crop. Journal of Root Crops 17: 85-91.


Szott, L.T., Palm, C.A. and Sanchez, P.A., 1991. Agroforestry in acid soils of the humid tropics. Advanced Agronomy, 45: 275–301.


Taiwo, S. O. and Ekeleme, F. (2008).Effect of tillage, weeding regimes and mulching on speargrass suppression and Soybean yield.NigerianJournal of Weed Science, 21: 84-94.


Teasedale, J. R. and Mohler, C. L. (1993). Light transmittance soil temperature, and soil moisture under residues of hairy vetch and rye. Agronomy Journal, 85: 673–680.


Toure, A., Sogbeji, J. M. and Gumedzoe, M. D. (2013). The critical period of weed interference in upland rice in northern guinea savannah: Fiel measurement and model prediction. African Journal of Acadamic Research,8 (17): 748-759.


Umanah, E. E. (2005). Cassava production, Utilization andtradeinUyo, EMSEL Group 3,  Umudike and its Recommendation, Research Journal of Agriculture and Environmental Management, 4(1): 001-004.


Usman, H. I., Kolo. M. G. M and Oladiran, I. A. (2013). Weed tolerance, suppression and Grain yield of inter and intra specific rice varieties in Nigeria. Pakistan Journal of Weed Science Research,19(3): 257-273.


Weller, S. and Owen, M. (2016).Herbicide Mode of Action – Short Course.IITA.Ibadan, Nigeria.


Cite this Article: Arukwe UE; Ekeleme F (2020). Effect of cassava-sweet potato intercrops patterns and weed control methods on weed suppression. Greener Journal of Agricultural Sciences 10(2): 71-85.




Call for Articles/Books

Call for Scholarly Articles

Authors from around the world are invited to send scholary articles that suits the scope of this journal. The journal is currently open to submissions and will process and publish articles daily, immediately they are ready.

The journal is centered on quality and goes about its processes in a very timely fashion. Seasoned editors/reviewers will be consulted to review each article(s), profer quality evaluations and polish the articles with expertise before publication.

Use our quick submit button to submit or simply send your article(s) as an e-mail attachment to or

Call for Books

You are also invited to submit your books for online or print publication. We publish books related to all academic subject areas.    Submit as an e-mail attachment to


Login Form

Other Journals