Understanding the Interplay between Weeding Frequency, Weeding Cost, and Kenaf (Hibiscus cannabinus) Yield in Southwest Nigeria.

Öz

Kenaf (Hibiscus cannabinus L.) cultivation holds significant promise in Nigeria. However, there exists a gap in understanding the optimal weeding frequency for maximizing kenaf yields in this region. This study aimed to address this gap by investigating the impact of different weeding frequencies on kenaf crop productivity. A field experiment was conducted at two locations in Southwest Nigeria during the 2022 and 2023 rainy seasons. Three different hoe weeding frequencies were implemented as experimental treatments: weeding at 2 weeks after sowing (WAS), weeding at both 2 and 4 WAS, and weeding at 2, 3, and 6 WAS. The experiment also featured weed-free and weedy checks which were the control treatments. The experimental treatments were laid out in a Randomized Complete Block Design, and replicated three times. Data on weed density, weed weight, kenaf growth parameters, biomass production, fibre yield, and economic variables were collected and analyzed. The results revealed a clear correlation between higher weeding frequency and reduced weed density and biomass, highlighting the effectiveness of frequent weeding in controlling weed proliferation and enhancing kenaf cultivation. Significant differences in kenaf growth metrics were observed in three or more hoe-weeding regimes compared to weedy check, emphasizing the adverse impact of weed competition on kenaf development. Moreover, biomass parameters of kenaf increased in response to increased weeding frequency, particularly thrice-weeded plots. Weeding at least twice a season is recommended for optimal kenaf growth and yield. Net income varied between locations, underscoring the importance of location-specific weeding strategies.

Anahtar Kelimeler

• Hoe-weeding
• Income
• kenaf yield
• weeding frequency
• weeding cost

Kaynakça

1. Adedoyin, L. B., Oyerinde, O. V., Ayodele, O. P. (2019). Analysis of climate change in rainforest ecosystems of Southwestern Nigeria. Science Research Annals, 10, Special Edition (2019): 220-231.
2. Adenawoola, A. R., Aladesanwa, R. D., Adenowuro, T. D. (2005). Effects of frequency of weeding on the growth and yield of long-fruited jute (Corchorus olitorius) in a rainforest area of southwestern Nigeria. Crop Protection, 24(5): 407-411. https://doi.org/10.1016/j.cropro.2004.09.016
3. Agbaje, G. O., Saka, J. O., Adegbite, A. A., Adeyeye, O. O. (2008). Influence of agronomic practices on yield and profitability in kenaf (Hibiscus cannabinus L.) fibre cultivation. African Journal of Biotechnology, 7(5): 565–574.
4. Akubueze, E. U., Ezeanyanaso, C. S., Orekoya, E. O., Akinboade, D. A., Oni, F., Muniru, S. O., Igwe, C. C. (2014). Kenaf fibre (Hibiscus cannabinus L.): a viable alternative to Jute fibre (Corchorus genus) for agro-sack production in Nigeria. World Journal of Agricultural Sciences, 10 (6): 308-313. https://www.cabidigitallibrary.org/doi/full/10.5555/20153152647
5. Aluko, O. A., Ajijola, S., Ayodele, O. P. (2017). Effect of Weed Control Methods on Profitable Kenaf (Hibiscus Cannabinus) Production in Rainforest-Savanna Transition Agro-Ecology of Nigeria. Glob. J. Agric. Res., 5(July): 1–10.
6. Ansong, M., Acheampong, E., Echeruo, J. B., Afful, S. N., Ahimah, M. (2021). Direct financial cost of weed control in smallholder rubber plantations. Open Agriculture, 6(1): 346–355. https://doi.org/10.1515/opag-2021-0022
7. Anwar, M. P., Islam, A. M., Yeasmin, S., Rashid, M. H., Juraimi, A. S., Ahmed, S., Shrestha, A. (2021). Weeds and their responses to management efforts in a changing climate. Agronomy, 11(10): 1921. https://doi.org/10.3390/agronomy11101921
8. Blaix, C., Moonen, A. C., Dostatny, D. F., Izquierdo, J., Le Corff, J., Morrison, J., Von Redwitz, C., Schumacher, M., Westerman, P. R. (2018). Quantification of regulating ecosystem services provided by weeds in annual cropping systems using a systematic map approach. Weed research, 58(3): 151-164. https://doi.org/10.1111/wre.12303

9. Cortés, J. A., Mendiola, M. A., Castejón, M. (2010). Competition of velvetleaf (Abutilon theophrasti M.) weed with cotton (Gossypium hirsutum L.). Economic damage threshold. Spanish Journal of Agricultural Research, 8(2): 391-399. https://doi.org/10.5424/sjar/2010082-1184
10. Gandía, M. L., Del Monte, J. P., Tenorio, J. L., Santín-Montanyá, M. I. (2021). The influence of rainfall and tillage on wheat yield parameters and weed population in monoculture versus rotation systems. Scientific reports, 11(1): 22138. https://doi.org/10.1038/s41598-021-00934-y
11. Gbaraneh, L. D., Briggs, S. A. (2018). Influence of timing and frequency of hoe weeding and herbicide application on maize yield in Port Harcourt, Nigeria. International Journal of Agriculture and Earth Science, 4(5): 1-12.
12. Hossain, M. D., Musa, M. H., Talib, J., Jol, H. (2010). Effects of nitrogen, phosphorus and potassium levels on kenaf (Hibiscus cannabinus L.) growth and photosynthesis under nutrient solution. Journal of Agricultural Science, 2(2): 49-57. https://www.cabidigitallibrary.org/doi/full/10.5555/20113238437
13. Nur, I., Kundu, B., Chowdhury, M., Mukul, M., Ferdush, J., Khan, M. (2021). Weed Management of Kenaf (Hibiscus Cannabinus) Through Intercropping Leafy Vegetables and Cultural Practices. SAARC Journal of Agriculture, 19(1):165–176. https://doi.org/10.3329/sja.v19i1.54787
14. LINKS, (2022). Market Study and Value Chain Analysis of Kenaf in Nigeria. 83pp https://www.links-nigeria.com/wp-content/uploads/2022/10/Market-Study-and-Value-Chain-Analysis-of-Kenaf-in-Nigeria-1.pdf
15. Ologbon, O. A. C., Oyebanjo, O., Ogunnaike, M. G., Osinowo, O. H., Osunmakinde, M. A. (2023). Herbicide use dynamics on cassava-based farming systems in Yewa division of Ogun state, Nigeria: Economic, environmental and health perspectives. Journal of Agricultural Development and Policy, 33(1): 58-67.
16. Rahman, M. H., Rahman, M. M., Islam, M. S., Zaman, F., Parveen, S., Hasan, A. K. (2022). Effect of herbicides on weed infestation, growth and yield of (Hibiscus cannabinus L.). Journal of the Bangladesh Agricultural University, 20 (4):354-361. https://www.cabidigitallibrary.org/doi/full/10.5555/20230015923
17. Udemba I. O., Ayodele O. P., Aluko O. A., Yakubu F. O. (2023) Quantifying kenaf vegetable yield across diverse plant stands in fibre kenaf field kenaf. In W. B. Akanbi, J. O. Olaniyi, T. I. Olabiyi, O. O. Olatunji, R. R. Ipinmoriti, J. M. Adesina, E. O. Ajayi and O. O. Ojo (Eds.), Application of science, technology and artificial intelligence in production and practices of horticulture; 41st Annual Conference of Horticultural Society of Nigeria (HORTSON), pp 1087-1091.