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Comparative Effect of Organic and In-Organic Fertilizer Treatment on the Growth and Tuberyeild of Sweet Potato (Ipomea Batata L)

Adeyeye, A.S


Akanbi W.B


Sobola, O.O


Lamidi, W.A


Olalekan, K.K

Adeyeye, A.S 1 ,

Akanbi W.B 2
Sobola, O.O 1 

Lamidi, W.A 4 Olalekan, K.K 4 

  1. Federal University Wukari, Taraba State Nigeria 1

  2. Ladoke Akintola University of Technology, Ogbomoso Oyo State, Nigeria 2

  3. Osun State University,Osogbo, Osun State,Nigeria 4

Pages: 54-57

DOI: 10.18488/journal.70/2016.3.3/

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Article History:

Received: 26 October, 2016
Revised: 23 November, 2016
Accepted: 15 December, 2016
Published: 05 January, 2017


The experiment was conducted at the teaching and Research farm of the Federal University Wukari Taraba State, Nigeria to assess, evaluate and compare the effect of organic fertilizers such as poultry manure, cow dung, organic manure and in-organic fertilizers such as NPK and urea on the growth and tuber yield of sweet potato. The recommended rates of cow dung (10t/ha) poultry manure (10t/ha), organic manure (10t/ha) NPK15:15:15 (400kg/ha) and urea (200kgN/ha) were applied as treatment to sweet potato with a control at (0kg/ha). These were arranged in a randomized complete block design with three replications. Measurement were taken on the growth and tuber yield at harvest such as the length of primary vein, number of secondary vein number of leaves, number of tuber and tuber weight. Data collected were analyzed using (ANOVA) and the significant means separated using Duncan multiple difference at 5% probability level. The result revealed or showed that numbers of leaves were significant in all the treatments. Application of urea fertilizer produced the highest number of tuber per plant, while tuber weight was not significantly different, but poultry manure application had the higher mean value of (2.34kg). It was concluding that application of poultry manure as organic fertilizer are better and can compare readily with inorganic fertilizer (urea) in the production of sweet potato.

Contribution/ Originality
Sweet potato is one of the most important field crop in the world and many studies have been carried out on the growth, productivity and nutritional properties including the effect of organic and inorganic fertilizers applications.The study therefore compares the effectiveness of available organic and inorganic fertilizer on the growth and tuber yield of the crop.


Sweet potato, Organic, Mineral fertilizer, Yield.



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This study received no specific financial support.

Competing Interests:

The authors declare that they have no competing interests.


All authors contributed equally to the conception and design of the study.

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