STABILITY STUDY OF SOME CASSAVA (Manihot esculenta Crantz) VARIETIES RELATIVE TO THE HARVEST PERIOD

After yam, cassava (Manihot esculenta Crantz) is Côte d'Ivoire's second most important food crop, with annual production of 4.2 million tonnes in 2014. It is a subsistence crop as well as a source of income for farmers. Climate hazards and harvest season, on the other hand, have an impact on tuberous root output and quality (dry matter and starch content). Furthermore, the evaluation of cultivars for starch, a very marketable commodity, had not yet been finished. In this context, from 2007 to 2008, a study was conducted to determine the yield, dry matter content, and starch content of stable cassava varieties. There are 30 cassava variants in the plant material. Francis and Kannenberg's stability factors were employed in eight (8) situations (4 harvest dates combined with two years). The tuberous root characteristics were significantly affected by the harvest date. The harvest at 12 months produced the best yield, dry matter content, starch content, and time compromise. 9941, 9971, I158, IM89, 9620, 9039, and 9122 were the most stable clones with high yields ranging from 46 to over 64 t/ha. With rates varying between 37 and 42 percent, the most stable types with high dry matter content were 9941, 9971, CM52, Yacé, 9614, I158, Boun, Bon2, TMS4, Im93, and Bonk. With rates ranging from 18% to 21%, the stable types with high starch content were CM52, 971, 9941, 9620, and Anan. The varieties 9941 and 9927, on the other hand, were the most stable and productive.

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