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Effect of Tillage Systems and Vine Orientation on Yield of Sweet Potato (Ipomoea batatas L.)

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DOI: 10.4236/ajps.2014.521332    4,404 Downloads   5,242 Views   Citations

ABSTRACT

In Zimbabwe sweet potato (Ipomoea batatas L.) production is practiced under different tillage systems with varying vine orientations, which contribute to variable yields. Limited research on yield loss due to these different practices is available despite that the majority of farmers are growing sweet potatoes to sustain their livelihoods. A field study was carried out at Midlands State University in the 2013/14 rainy season, to determine the effect of tillage systems and vine orientation on yield of sweet potato. A 2 × 3 factorial treatment structure in a randomized complete block design (RCBD), with three replications was used. Tillage systems had two factors (ridge and mound) and three vine orientations were used (horizontal, fold and loop). Data on storage root length, storage root diameter and storage root weight was subjected to Analysis of Variance (ANOVA) at 5% significance level. There was no interaction (p < 0.05) between tillage systems and vine orientations on storage root diameter, storage root length and storage root yield. The horizontal vine orientation gave statistically significant (p < 0.05) storage roots diameter of width 405 mm. Conversely the loop vine orientation had statistically the least (316 mm) storage root diameter. Horizontal vine orientation had significantly (p < 0.05) wider storage roots than the loop vine orientation. The ridge recorded longer (134.2 mm) mean storage root length, while those from mounds had shorter (115.9 mm) root length. The loop and the horizontal vine orientations recorded statistically the highest (35.5 t/ha and 34.8 t/ha respectively) sweet potato storage root yield. On the other hand, the fold vine orientation obtained significantly the lowest (28.7 t/ha) storage root yield. The research concluded that the horizontal and fold vine orientations had the widest storage root diameter and the ridge had longer storage root lengths. The loop and horizontal vine orientations are recommended in sweet potato production if high yields are to be achieved.

Conflicts of Interest

The authors declare no conflicts of interest.

Cite this paper

Chagonda, I. , Mapfeka, R. and Chitata, T. (2014) Effect of Tillage Systems and Vine Orientation on Yield of Sweet Potato (Ipomoea batatas L.). American Journal of Plant Sciences, 5, 3159-3165. doi: 10.4236/ajps.2014.521332.

References

[1] Clarke, A.C. (2009) Origins and Dispersal of the Sweet Potato and Bottle Gourd in Oceania: Implications and Prehistoric Human Mobility. Thesis, Massey University, New Zealand.
[2] Belehu, T. and Hammes, P.S. (2004) Effect of Temperature, Soil Moisture Content and Type of Cutting on Establishment of Sweet Potato Cuttings. South African Journal of Plant and Soil, 21, 85-89.
http://dx.doi.org/10.1080/02571862.2004.10635028
[3] Mutandwa, E. and Gadzirai, C.T. (2007) Comparative Assessment of Indigenous Methods of Sweet Potato Preservation among Smallholder Farmers: Case of Grass, Ash and Soil-Based Approaches in Zimbabwe. African Studies Quarterly, 9, 85-98.
[4] Parwada, C., Gadzirai, C.T. and Sithole, A.B. (2011) Effect of Ridge Height and Planting Orientation on Ipomoea batatas (sweet potato) Production. Journal of Agricultural Biotechnology and Sustainable Development, 3, 72-76.
http://www.academicjournals.org/JABSD
[5] Nedunchezhiyan, M., Byju, G. and Jata, S.K. (2012) Sweet Potato Agronomy, Fruit, Vegetable and Cereal Science and Biotechnology. Global Science Books, 1-10.
[6] Mutandwa, E. (2008) Performance of Tissue-Cultured Sweet Potatoes among Smallholder Farmers in Zimbabwe. The Journal of Agrobiotechnology Management and Economics, 11, 48-57.
[7] Andrade, M., Barker, I., Cole, D., Dapaah, H., Elliot, H., Fuentes, S., Gruneberg, W., Kapinga, R., Kroschel, J., Labarta, R., Lemaga, B., Loechl, C., Low, J., Mwanga, R., Ortiz, O., Oswald, A. and Thiele, G. (2009) Unleashing the Potential of Sweet Potato in Sub-Saharan Africa: Current Challenges and Way forward. International Potato Centre (CIP), Lima, 197.
[8] Nyamapfene, K. (1991) Soils of Zimbabwe. Nehanda Publishers, Harare, 179.
[9] Lewthwaite, S.L. and Triggs, C.M. (2009) Preliminary Study of the Spatial Distribution of Sweet Potato Storage Roots. Agronomy New Zealand Issue, 39, 111-122.
[10] Agbede, T.M. and Adekiya, A.O. (2011) Evaluation of Sweet Potato (Ipomoea batatas L.) Performance and Soil Properties under Tillage Methods and Poultry Manure Levels. Emirates Journal of Food and Agriculture, 23, 164-177.
http://www.ejfa.info/index.php/ejfa/article/view/6454/3292
[11] Odjugo, P.A.O. (2008) The Effect of Tillage Systems and Mulching on Soil Microclimate, Growth and Yield of Yellow Yam (Dioscorea cayenensis) in Midwestern Nigeria. African Journal of Biotechnology, 7, 4500-4507.
[12] Ennin, S.A., Otoo, E. and Tetteh, F.M. (2009) Ridging, a Mechanized Alternative to Mounding for Yam and Cassava Production. West African Journal of Applied Ecology, 15.
[13] Rukundo, P., Shimelis, H., Laing, M. and Gahakwa, D. (2013) Storage Root Formation, Dry Matter Synthesis, Accumulation and Genetics in Sweet Potato. Australian Journal of Crop Science, 7, 2054-2061.
[14] Pandey, S.K. (2007) Vegetables, Tubers and Spice Crops: Potato and Tuber Crops. Central Potato and Research Institute, Shimla.
http://nsdl.niscair.res.in/jspui/bitstream/123456789/
409/2/Revised%20Potato%20%26%20Tuber%20Crops.pdf
[15] Villordon, D.R., La Bonte, D.R., Firon, N., Kfir, K., Pressman, E. and Schwartz, A. (2009) Characterization of Adventitious Root Development in Sweet Potato. HortScience, 44, 651-655.
[16] Ravi, V. and Indira, P. (1999) Crop Physiology of Sweet Potato. Horticultural Reviews, 23, 277-316.
[17] Belehu, T. (2003) Agronomical and Physiological Factors Affecting Growth, Development and Yield of Sweet Potato in Ethiopia. Ph.D. Thesis, University of Pretoria, Pretoria.
[18] Firon, N., LaBronte, D., Villordon, A., McGregor, C., Kfir, Y. and Pressman, E. (2009) Botany and Physiology: Storage Root Formation and Development. In: Loebenstein, G. and Thottapilly, G., Eds., The Sweet Potato, Springer Science + Bussiness Media BV, 13-26.

  
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