Comparative Performance of Old and Newly Released Cassava Varieties in An Organic and Inorganic Amended Soils Over Two Farming Seasons

Year 2025, Volume: 35 Issue: 3, 415 - 427, 30.09.2025

Chukwunalu Ossaı , Smart Ojobor , Thankgod Ogwuche , Stephanie Clara Akpeji , Hilary Odeh Elohor Diebiru-ojo

https://doi.org/10.29133/yyutbd.1620528

Abstract

The multi uses of cassava plant (Manihot esculenta Crantz) has increased its demand and value. However, the production rate is far below the potential as a result of use of unimproved varieties and lack of soil amendment to enhance productivity. This study thus compared the performances of some old and newly released cassava varieties in both organic, inorganic and unamended soil at Ogbagu Ogume. Stems of newly released (Obasanjo2, Baba70, and Game changer) and old (TME419 and Give-Me-Chance-GMC) were planted in farmlands amended with 400 kg/ha NPK 15:15:15, 4.2 t/ha poultry manure and 5-year old fallowed land (control) for 2023 and repeated in 2024 planting seasons. The experimental design was a 5(varieties) x 3(nutrient source) x 2(seasons) factorial arranged in a randomized complete block design and replicated three times. The soil and leaf macro and microelements were also determined using standard procedures. Data were taken on the fresh tuber weight (FTW) at harvest. Data collected were analysed using ANOVA and means were separated using least significant differences at 5% significance level. The macro and micro elements of the soil decreased from the pre to post status while the leaf nutrient content were insignificant across the genotypes. The FTW differed significantly across the varieties, nutrient source and year and ranged from 21.33±0.59 (TME419) to 34.33±0.59 (Obasanjo2), 26.95±0.46 (Fallowed soil) to 29.22±0.46 (NPK 15:15:15), and from 25.95±0.37 (year two) to 29.96±0.37 (year one), respectively. Planting improved varieties in a NPK 15:15:15 amended soil at 400 kg/ha enhances cassava output, thus recommended.

Keywords

Old and new varieties; , Soil nutrients; , Farming systems; , Cassava

Ethical Statement

NA

Supporting Institution

Bill and Melinda Gates Foundation

Project Number

ID- Grant INV-004511

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