Abstract
In Côte d'Ivoire, cassava production is carried out by small-scale planters who use very few technical means and local cultivars that are not very productive and susceptible to diseases. The objective of this study is to maximize the recovery of cassava cuttings after planting. To this end, ten substrates of single, double, triple and quadruple composition were made from soil supplemented with sawdust, chicken droppings, carbonized rice husks and NPK 10 18 18 to regenerate dehydrated cassava Bocou 1 and Yavo mini-cuttings. The recovery rate of the mini-cuttings was evaluated as well as the agro-morphological parameters of the seedlings for 21 days. Results showed that the recovery rate was very high on the carbonized rice husk substrate (86.5% in Bocou 1 and 85.5% in Yavo). In addition, the substrates significantly influenced the growth parameters of the seedlings. Thus, the substrate composed of carbonized chicken-bale soil had the highest number of leaves, with 6 leaves per plant in Bocou 1 and 10 leaves in Yavo, with an average height ranging from 10.99 ± 1.22 (Bocou 1) to 20.23 ± 1.16 (Yavo). The results of this study will help orient the actors of the cassava sector towards a new cultivation technique.
Highlights
Cassava (Manihot esculenta Crantz), originally from Latin America, was domesticated in Amazonia where it shares the same area of origin as groundnut, cocoa and rubber [1]
It was introduced in Africa by Portuguese merchants since the 16th century through various routes [2]; in Côte d'Ivoire by AKAN immigrant populations coming from the South of Ghana, notably the Abouré and the Aladjan [3]
Recovery rate of mini-cuttings Table 1 shows that the recovery rate of mini-cuttings ranged from 62.93 to 86.5% for Bocou1 and from 60.55 to 85.55% for Yavo
Summary
Cassava (Manihot esculenta Crantz), originally from Latin America, was domesticated in Amazonia where it shares the same area of origin as groundnut, cocoa and rubber [1]. It was introduced in Africa by Portuguese merchants since the 16th century through various routes [2]; in Côte d'Ivoire by AKAN immigrant populations coming from the South of Ghana, notably the Abouré and the Aladjan [3]. Cassava is one of the main food crops in Côte d'Ivoire just after yam, with a national production estimated at about 5 million t/year [4]. The aim is (i) to evaluate the effect of substrates on the regrowth of cassava mini-cuttings Bocou 1 and Yavo and (ii) to determine the impact of substrates on the agro-morphological parameters of the seedlings derived from these cuttings
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