Effects of Calcium Fertilization on the Susceptibility of Dioscorea Species to the Yam Storage Pathogens Aspergillus Niger van Tiegh and Botryodiplodia Theobromae Pat

Mo, Otusanya; Enikuomehin, O. A.; Popoola, A. R.

doi:10.4172/2329-955x.1000155

Cited by 3 publications

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“…Oniyere tubers harvested at 6MAP, inoculated and incubated with B. theobromae for 2 weeks was 2.03%. This infection is 43% lower than that obtained in an improved variety of white guinea yam D. rotundata TDr 131 inoculated with B. theobromae after fertilization with CaCO 3 and NPK [16]. Weight loss in Variety Oniyere in this study was 0% whereas D. rotundata TDr 131 had 3.4% weight loss in the cited report [16].…”

Section: Discussioncontrasting

confidence: 57%

“…This infection is 43% lower than that obtained in an improved variety of white guinea yam D. rotundata TDr 131 inoculated with B. theobromae after fertilization with CaCO 3 and NPK [16]. Weight loss in Variety Oniyere in this study was 0% whereas D. rotundata TDr 131 had 3.4% weight loss in the cited report [16]. Bounty fertilizer with eight minerals may be recommended for management of both anthracnose disease and tuber rot by B. theobromae in D. rotundata var.…”

Section: Discussionmentioning

confidence: 61%

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Mineral Fertilizer Effects on Anthracnose Disease Caused by Colletotrichum gloeosporioides Penz, Tuber Rot by Botryodiplodia theobromae Pat and yield in Dioscorea rotundata Variety Oniyere

2018

JOJHA

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Mineral nutrition effect on anthracnose caused by Colletotrichum gloeosporioides, tuber rot by Botryodiplodia theobromae and yield in Dioscorea rotundata var. Iseosi was investigated in this study. The field plot used had been monoropped to Dioscorea species in the two previous consecutive years with only calcium nitrate fertilizer. But nitrogen and calcium in the plot soil were still below the critical (2% and 0.6 cmol kg -1 respectively) determined for optimum yam production (South West Nigeria). The field design was RCBD with 3 treatments of 0, 0.6, 1.2ml/l -1 Bounty fertilizer applied at 3 MAP, and three replicates. Bounty fertilizer favoured higher concentration of the phytoanticipins (with antimicrobial activity) flavonoid, lignin and tannin over the control. Leaf N and Mg had significant correlation with leaf flavonoid content (r = 0.7634, 0.6786). Leaf flavonoid had significant correlation with leaf lignin content, r = 0.7189. Leaf lignin in turn had significant correlation with leaf tannin content, r = 0.7556. Leaf Sulphur correlated significantly with leaf flavonoid and leaf phosphorus, r = 0.7218 and 0.8467 respectively. Bounty fertilizer also favoured higher leaf magnesium 234.73 and 230.27mg/100gdm (0.60ml/l -1 and 1.20ml/l -1 ) than the control, 182.40mg/100gdm. Leaf nitrogen, phosphorus and sulphur increased with bounty fertilizer treatment, then the control. Only leaf potassium was higher in the control (116.72mg/100gdm) than in the Bounty-fertilized plants with 87.31 and 87.53mg/100gdm in the 0.60mll -1 and 1.20mll -1 treatments.The following correlations were also significant respectively: Leaf N and Leaf P, S, r = 0.8484 and 0.9836 respectively.Leaf Ca and leaf Mg, r = 0.9192 Anthraconse incidence did not increase after the 3 MAP bounty fertilizer soil amendment. It was 11%, 6% and 0% in the control, 0.60ml/l -1 and 1.20ml/l -1 treatments respectively at 5 MAPS. It reduced to 5.6% (control and 0.60ml/l -1 treatment) and remained 0% in the 1.20ml/l -1 treatment at 6MAP. Severity of anthracnose was 1, category of resistant, both at 5 MAP and 6 MAPS across all the three treatments. The interplay/ enhancement of leaf minerals with the three phytochemicals/anticipants, as well as the latter with one another should be responsible for the low disease incidence and resistant severity status of variety Oniyere. Mean tuber weight loss after inoculation and incubation with B. theobromae for 2 weeks was 0% and infection range over the three treatments was low, that is 1.21 to 2.95% with no significant differences. Mean tuber weight per plant was in the range 0.88kg to 1.35kg with no significant differences between treatments. The 1.20ml/l -1 bounty fertilizer treatment gave equivalent yield of 13.46 tons ha -1 . Bounty fertilizer at 0.60ml/l -1 or 1.20ml/l -1 is recommended for local varieties of white guinea yam in South West Nigeria especially where monocropping is desired.

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Section: Discussioncontrasting

confidence: 57%

Section: Discussionmentioning

confidence: 61%

Mineral Fertilizer Effects on Anthracnose Disease Caused by Colletotrichum gloeosporioides Penz, Tuber Rot by Botryodiplodia theobromae Pat and yield in Dioscorea rotundata Variety Oniyere

2018

JOJHA

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“…Investigaciones realizadas por Otusanya et al (2016) asocian la alta incidencia y severidad de los hongos A. niger y L. theobromae con la nutrición del cultivo, en especial con las deficiencias de calcio. Al respecto indican que las aplicaciones de carbonato de calcio mejoraron la resistencia contra estas enfermedades y redujeron la pérdida de peso en los tubérculos.…”

Section: -214unclassified

Identificación de hongos asociados a la pudrición seca del ñame bajo condiciones de almacenamiento

López

Castellanos

Cabadiaz

et al. 2016

Rev. investig. altoandin.

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The effects of calcium fertilizer on anthracnose and Rhizopus tuber rot of yam

Taiwo

Olugbemileke

Afolabi

et al. 2021

ATR

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Yam (Dioscorea spp) production is beset in the field and in storage by major fungal pathogens, namely Colletotrichum gloeosporioides that causes anthracnose in the field, and Rhizopus stolonifer that causes tuber rot in storage. Alternative control measures are imperative as conventional control of these pathogens is either ineffective or detrimental. This study investigated the effects of calcium fertilizer on the incidence and severity of anthracnose and Rhizopus rot of yam. Calcium nitrate fertilizer was applied to soils naturally infected with C. gloeosporioides, at the rates of 0, 3, and 4kg ha-1. D. rotundata variety Efuru was planted. The treatments were arranged in a randomized complete block design with three replicates. Anthracnose disease rating relied on natural endemic infection in the field, while inoculation of harvested yam tubers was carried out using R. stolonifer. There was no significant effect of calcium amendment of the soil on anthracnose severity in D. rotundata or on the agronomic parameters. D. rotundata tubers treated with 3 and 4kg ha-1 calcium soil amendments had reduced infection by R. stolonifer in storage compared to the control treatments. The study concluded that calcium applied to the soil had reduced storage losses by R. stolonifer in D. rotundata but had no influence on anthracnose severity in the field. Therefore, 3kg ha-1 of calcium nitrate applied to the soil can be used to improve D. rotundata tuber resistance to R. stolonifer, and is recommended for high-quality tuber storage.

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Effects of Calcium Fertilization on the Susceptibility of Dioscorea Species to the Yam Storage Pathogens Aspergillus Niger van Tiegh and Botryodiplodia Theobromae Pat

Cited by 3 publications

References 0 publications

Mineral Fertilizer Effects on Anthracnose Disease Caused by Colletotrichum gloeosporioides Penz, Tuber Rot by Botryodiplodia theobromae Pat and yield in Dioscorea rotundata Variety Oniyere

Mineral Fertilizer Effects on Anthracnose Disease Caused by Colletotrichum gloeosporioides Penz, Tuber Rot by Botryodiplodia theobromae Pat and yield in Dioscorea rotundata Variety Oniyere

Identificación de hongos asociados a la pudrición seca del ñame bajo condiciones de almacenamiento

The effects of calcium fertilizer on anthracnose and Rhizopus tuber rot of yam

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