Comparative Evaluation of Different Storage Methods of Sweet Potato (Ipomea batatas {L}) and Their Management

DOI

10.2991/978-94-6463-306-1_17How to use a DOI?

Keywords

Diseases; inhibition; microorganism; test plant and treatments

ABSTRACT

In vivo and in vitro study were conducted to evaluate the efficacy of five storage methods (wood shaving, use of basket, wood ash, bamboo poles and storage on the floor) of sweet potato and their management. Diseased tubers of sweet potato were collected from the field trial. The fungus was isolated from diseased potato tuber samples and identified using culture medium. The fungal species associated with the tuber rot of sweet potato and subsequent rot was isolated and identified in this study as Aspergilus niger, Aspergilus flavus, Penicilum expansum, Rhalstonia solanacearum, Rhizopus stolonifer, Fusarium oxysporium and Fusarium solani.

The experiment was carried out between December 2018 and March 2019 for a period of 3 months and repeated in December 2019 to March 2020 to determine the best storage method of sweet potato and their management. From the physical observation the symptom shows three types of rots, which were ascertained as soft, dry and brown rot on Sweet potato tubers in different storage systems. From December 2018 after 3 months of storage were significantly different (P < 0.05) on the level of inhibition of the causal organisms on different storage methods used. Wood ash reduced the extent (2.7, 1.8 for dry and soft rot respectively) of tuber rot pathogens more than other storage methods, the least was from the tubers stored on the floor which recorded 95.5 from the dry rot and gave less value in soft rot (6.3), but the tubers stored in basket method had the highest rot incidence (34.8) in soft rot than every other storage method. In 2019 after 3 months storage shows the same sequence followed in 2018. Wood ash still takes the lead in control of rot induced pathogen than other methods with a value of 15.3 from dry rot and 99.53 for the floor which was the least in rot reduction. The degree of rot incidence in 2019 was higher than in 2018. The mean percentage dry rot in 2019 recorded 55.3 while mean dry rot in 2018 was 39.9. For the soft rot, the mean value was 12.4 and 8.7 (2019, 2018) respectively. This could be due to higher temperature regime of drought in 2019. Also, there was appreciable difference in nutrient values of the healthy and infected tubers of sweet potato. The test pathogens significantly affected the nutrient content of sweet potato tubers. Aspergilius flavus was the most virulent pathogen depleting the gross nutrient content of the tubers by 48.53%, this was closely followed by Rhizopus stolonifer which incurred mean percentage loss of 46.50. However, Penicilium expansum was the least virulent in the study. A mean percentage loss of nutrient of 29.65% was recorded on infected tubers due to the pathogen (P. expansum).

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© 2023 The Author(s)

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TY  - CONF
AU  - Juliet Nwaneri
AU  - Chinyere Opara
AU  - Thankgod Nwaneri
PY  - 2023
DA  - 2023/12/18
TI  - Comparative Evaluation of Different Storage Methods of Sweet Potato (Ipomea batatas {L}) and Their Management
BT  - Proceedings of the 6th Biennial Conference of Organization for Women in Science for the Developing World Nigeria (OWSD 2023)
PB  - Atlantis Press
SP  - 270
EP  - 277
SN  - 2468-5747
UR  - https://doi.org/10.2991/978-94-6463-306-1_17
DO  - 10.2991/978-94-6463-306-1_17
ID  - Nwaneri2023
ER  -