Early adventitious rooting of cuttings and variability of the harvest index of the variety MM105 of Manihot esculenta Crantz
2023
Makouanzi Ekomono, Chrissy Garel
Cassava (Manihot esculenta) is an important crop for subsistence farmers in Sub-Saharan Africa. Cassava production is subject to a number of constraints, such as diseases and cropping systems, leading to low plant productivity. In order to improve the yield of the MM105 variety by exploring practices that encourage the root system to induce good cassava production, a fully randomisation design with two replications was installed in the nursery. Three planting positions (vertical, slant, horizontal) and two cut model (flat slice, one-sided slice) was investigated. Resultts reported that the highest number of storage roots, the highest above-ground fresh biomass and the highest harvest index was recorded with the vertical planting position. No cut models effect was found on the rooting of cuttings and harvest index. The one-sided slice induced greater variability in the harvest index than flat slice. The harvest index was negatively correlated with the number of nodes buried in the soil. However, there was a strong correlation between the number of storage roots, the fresh and dry storage roots biomass and the harvest index. The harvest index can be used as selection criterion for individuals within the MM105 variety to increase its tuber production.
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