scholarly journals Influence of root-knot nematodes of the genus Meloidogyne spp. on the growth and production of ten cultivars of tomato (Solanum lycopersicum L.) in Yamoussoukro in the center of Côte d’Ivoire

Author(s):  
Didier Junior KAKOU ◽  
Kouabenan ABO ◽  
Ler-N’Ogn Dadé Georges Elisée AMARI ◽  
Aya Carine N’GUESSAN ◽  
Brahima CAMARA
2021 ◽  
Vol 17 (03) ◽  
Author(s):  
Koffi Ahébé Marie Hélène ◽  
Yah N’guéttia Marie ◽  
Koffi N’dodo Bony Clovis ◽  
Amon Michel Wilfried ◽  
Atta Taky Hortense Diallo

Author(s):  

Abstract A new distribution map is provided for Tomato apical stunt viroid. Pospiviroidae: Pospiviroid. Hosts: tomato (Solanum lycopersicum). Information is given on the geographical distribution in Europe (Austria, Belgium, Croatia, Finland, France, Germany, Italy, Netherlands, Poland, Slovenia), Asia (Indonesia, Israel), Africa (Cote d'Ivoire, Senegal, Tunisia).


Author(s):  
Yadom Y. F. R. Kouakou ◽  
Kouamé Daniel Kra ◽  
Hortense Atta Diallo

The telluric factors favorable to nematode pathogenic diversity make yam nematode control ineffective. This work aims at studying the fluctuation in yam nematodes depending on yam phenological stages. Trials were implemented in four yam production areas in Côte d'Ivoire. After inventory of symptoms on yam tubers, the nematodes associated with the symptoms were extracted and identified. The correlation coefficients between the severity of symptoms on tubers and the size of the associated nematode populations were determined. The size of nematode populations associated with the symptoms were determined in 100 g of soil and 100 g of yam peel were determined depending on the phenological stages of yam plants. Galls, cracks, dry and wet rot were observed on harvested yam tubers. Globodera, Meloidogyne spp., Pratylenchus coffeae and Xiphinema were the nematodes associated with the symptoms. Pratylenchus coffeae was strongly involved in the development of cracks (r = 0.75) and dry rot (r = 0.86) then Meloidogyne spp. in that of galls (r = 0.78). Pratylenchus coffeae and Meloidogyne spp. fluctuation in cultivation soils and yam tubers is influenced by yam phenological stages. Their numbers increase in soils and tubers before tuberization initiation. Producers could draw on the results of this study to establish a schedule of nematicide treatments that could start as soon as yam seeds are planted.


2019 ◽  
Vol 13 (4) ◽  
pp. 369-374
Author(s):  
A. Yao ◽  
A. Hué ◽  
J. Danho ◽  
P. Koffi-Dago ◽  
M. Sanogo ◽  
...  

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