Caractérisation Physiologique Et Évaluation Du Comportement Germinatif De Semences De Rottboellia Cochinchinensis, Euphorbia Heterophylla, Et Porophyllum Ruderale, Trois Adventices Des Rizières De Côte d’Ivoire

Yao, Akoua Clementıne; Ipou, Ipou Joseph; Angaman, Djédoux Maxime; Koné, Mamidou Witabouna

doi:10.19044/esj.2017.v13n3p76

Cited by 2 publications

(1 citation statement)

References 15 publications

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“…De la famille des Asteraceae, Porophyllum ruderale produit beaucoup de semences avec un taux de germination élevé. Les travaux de De Marinis et al (1980) ont obtenu plus de 80% de levées et ceux de Yao et al (2017) s'élèvent à 98%. Dans des milieux naturels (jachères) Kpla et al (2017) ont estimé un taux variant de 40 à 70 %.…”

Section: Introductionunclassified

Distribution D'une Nouvelle Adventice, Porophyllum Ruderale (Asteraceae), Des Cultures De Côte d'Ivoire

Florence¹,

Awa²,

Arsène³

et al. 2018

ESJ

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The presence of Porophyllum ruderale is increasingly recognized in different agroecosystems in Côte d'Ivoire. The current study is initiated to determine its distribution area and abundance. To achieve our goals, data were collected through surveys of farmers and field sampling was conducted to assess the abundance of Porophyllum ruderale. These were processed by the Correspondence Analysis (AC), and with a GPS, geographic coordinates were incorporated into the ArcGIS software to identify colonized areas. Forest regions (Adzopé and Daloa) are the most infested with a centesimal frequency (Fr) of 100% of Porophyllum ruderale. In the other localities (Yamoussoukro, Man, Bondoukou) the frequencies vary from 43 to 93 %. This species is rare in the Korhogo region with a zero centesimal frequency. Agroecological zones favorable to the development of the weed have a rainfall amounting from 1100 to 2400 mm and a temperature between 21-28 C. Of the various agrosystems encountered, cassava is the crop with the highest presence and the highest density of Porophyllum ruderale with more than 21 individuals / m 2. At the end of this study, Porophyllum ruderale is present in most of Ivorian territory, particularly in forest areas where agriculture is the main activity.

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Section: Introductionunclassified

Distribution D'une Nouvelle Adventice, Porophyllum Ruderale (Asteraceae), Des Cultures De Côte d'Ivoire

Florence¹,

Awa²,

Arsène³

et al. 2018

ESJ

View full text Add to dashboard Cite

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Germination Capacity of Porophyllum Ruderale (JACQ.) Cass (Asteraceae) A Food Crop Weed in Côte d’Ivoire

F¹,

Touré²,

J³

2017

JAES

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Porophyllum ruderale is a weed present in all the regions of Côte d'Ivoire. It is a weed that rapidly colonizes agricultural parcels. A comparative study of its seed germination in relation to agro ecological areas was carried out. Selected seeds were sown in three different environments to test their germinative capacity. These are a closed environment and two opened environment in the south and central western Côte d'Ivoire. To determine the effect of sowing depth on the germination capacity, six sowing depths were tested: 0 cm, 0.5 cm, 1 cm, 2.5 cm, 5 cm and 10 cm. The results showed that the germination rate in the open environment is significantly different from that of the closed environment. We have 40-70% in natural environments and 10% in closed environments. For the depth test, the highest germination rate was obtained with seeds sowed at soil surface (0 cm) and the smallest one at 2.5 cm. These are 84% and 2.5% respectively. Our work has shown that Porophyllum ruderale is a heliophilic species because the presence of light activates its germination capacity. In a closed environment, the absence of this factor delays the growth of the weed until preventing flowering. It therefore fails to complete its life cycle, which is about six months. Thus, deep plowing cold prevent the development of Porophyllum ruderale.

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Caractérisation Physiologique Et Évaluation Du Comportement Germinatif De Semences De Rottboellia Cochinchinensis, Euphorbia Heterophylla, Et Porophyllum Ruderale, Trois Adventices Des Rizières De Côte d’Ivoire

Cited by 2 publications

References 15 publications

Distribution D'une Nouvelle Adventice, Porophyllum Ruderale (Asteraceae), Des Cultures De Côte d'Ivoire

Distribution D'une Nouvelle Adventice, Porophyllum Ruderale (Asteraceae), Des Cultures De Côte d'Ivoire

Germination Capacity of Porophyllum Ruderale (JACQ.) Cass (Asteraceae) A Food Crop Weed in Côte d’Ivoire

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