Management of Pectobacterium carotovorum infections in potatoes (Solanum tuberosum L.) using Tagetes minuta and Capsicum frutescens extracts
Journal Title: Journal of Agricultural and Crop Research - Year 2017, Vol 5, Issue 5
Abstract
Potato experiences losses caused by Pectobacterium carotovorum, in the field and after harvest. The study was carried out to determine the use of Tagetes minuta and Capsicum frutescens extracts in the management of blackleg and soft rot in potatoes caused by P. carotovorum bacteria. Aqueous extracts of T. minuta and C. frutescens each at 40, 30 and 20% concentrations were tested against P. carotovorum in potatoes with copper oxychloride and water as the positive and negative controls respectively. Data was collected on blackleg incidence and severity on potato plants (in the field), soft rot incidence and severity on tubers (at harvest) and postharvest percent tuber rots. Plants treated with T. minuta extracts and copper oxychloride showed significantly low disease incidence and severity compared to those treated with C. frutescens and water. The potato plants treated with 40 and 30% T. minuta; and copper oxychloride recorded low disease symptom development (2 plants per plot) and severity of 40 to 54% while those treated with water and C. frutescens showed high disease symptom development (4 plants per plot) and severity of 57 to 93%. The percent tuber infections significantly differed among the treatments. Copper oxychloride and T. minuta recorded the lowest percent postharvest infections of 6.5 to 12.11% while C. frutescens had high infections of 40 to 95%. T. minuta had antibacterial activity against P. carotovorum and therefore it can be used in the management of blackleg and soft rot in potatoes. It is locally available and gets rapidly degraded with no persistence and bio-accumulation in the environment, a major problem associated with synthetic agrochemicals.
Authors and Affiliations
Nyamari Jackline Kwamboka, Wolukau Joseph Ngwela, Gesimba Morwani Robert
Keywords
Related Articles
- EP ID EP354500
- DOI -
- Views 308
- Downloads 0
Occurrence of Ck-1 gene conferring resistance to Coffee Berry Disease in Coffea arabica cv. Ruiru 11 and its parental genotypes
Resistance to Coffee Berry Disease (CBD) in Coffea arabica cv. Ruiru 11 is known to be controlled by among others, the T (Ck-1) gene from Robusta coffee (Coffea canephora Pierre). The cultivar reportedly presents signifi...
Evaluation of sweet potato seedlings for growth pattern and susceptibility to major leaf diseases of sweet potatoes
The experiment was conducted at the screen house and experimental field using five sweet potato families with the objectives to investigate the vegetative growth pattern of seedlings developed through open pollination an...
Adoption assessment of improved maize seed by farmers in Benin Republic
To contribute to the improvement of productivity of maize, new improved maize seeds have been introduced in various areas favourable to the maize production of Benin. This paper assessed the adoption potentials of the di...
Performance of pearl millet (Pennisetum glaucum (L.) BR.) varieties intercrop with legumes in Sudan Savanna of Nigeria
Four pearl millet varieties (SOSAT-C-88, ZATIP, LACRI-9702-IC and EX-BORNO) were intercropped with four selected legumes: groundnut (Samnut – 14), soybean (TGX – 1830-2E), cowpea (IT89KD- 288) and bambara nut (Damboa whi...
Pathogenicity of entomopathogenic Entomophthora grylli on grasshoppers Diabolocatantops axillaris and Zonocerus variegatus causing leaf damage of shea tree seedlings
The grasshoppers Diabolocatantops axillaris and Zonocerus variegatus were found feeding on the leaves of shea tree seedlings which caused damage that appears as rough patches on the surface. The objectives of this study...