Suitability of some growing media for cashew seedling growth and development in the nursery
2023
Aremu-Dele Olufemi | Nduka Beatrice Abanum | Sobowale Ibrahim Olalekan | Adesanya Kehinde Ademola | Olorundare Bunmi Olaoluwa
Abstract. Using the right growing media is pivotal for cultivating high-quality seedlings. While topsoil remains a prevalent choice in nurseries, there is a growing need to explore its effectiveness in cashew seedling production and find potential alternatives that might reduce our dependence on it. A three-month experiment was undertaken at the Cocoa Research Institute of Nigeria's nursery. The setup followed a Completely Randomized Design (CRD) incorporating ten treatment variations, each replicated thrice. These treatments involved two cashew nut types, Jumbo and Medium, and five distinct growing media: 100% Topsoil, 100% Sawdust, 75% Topsoil + 25% Sawdust, 50% Topsoil + 50% Sawdust, and 25% Topsoil + 75% Sawdust. For the procedure, each of these media was filled into perforated polythene bags measuring 30cm x 15cm, with one seed planted per bag. Data collected were on % emergence, morphological, shoot and root data. Data were subjected to ANOVA using SAS (version 2010) statistical package and means were separated using DMRT at (P≤0.05). Findings revealed no notable variance in percentage mean emergence at four weeks post-planting or in leaf count at the twelve-week mark. Control treatments (100% topsoil) for jumbo and medium had the shortest plant height, lowest number of leaves, seedling vigour, fresh root weight and taproot length. 100% topsoil as a growing medium for raising cashew seedlings should be discouraged as the experimented growing media offered statistically the same or improved emergence, morphology, and root growth development.
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