Evaluation of Root Yield and Quality Factors and the Economic Benefits of Fertilizer Application in the Cassava Production in Semi-Deciduous Region of Ghana

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Author(s) Bright Atta Boateng | Joseph Sarkodie-Addo | Joe Manu-Aduening
Pages 628-633
Volume 5
Issue 12
Date December, 2016
Keywords Ampong, Cassava, Fertilizer, Yield, PPD, Dry Matter Content, Economic Benefit

A field study was conducted at the CSIR- Crops Research Institute (CRI) at Fumesua, Kumasi, Ghana from 2014 to 2015 to evaluate root yield, post-harvest physiological deterioration (PPD), dry matter content and economic benefit of fertilizer application of cassava. A 4 x 3 factorial experiment with treatments laid in Randomized Complete Block Design (RCBD) with 3 replications using 4 levels of NPK (15-15-15) fertilizer 0, 200, 400 and 800kg/ha applied at 3 different times 8, 16 and 24 WAP was employed for the studies. The variety used was ‘Ampong’, and improved cassava variety from the Crops Research Institute. Data was taken on fresh root yield, post-harvest physiological deterioration, dry matter content and economic analysis of the various fertilizer treatments. All the fertilizer treatment resulted in greater number of roots/plant ranging from 4.33 to 6.50 with the 400kg/ha causing the greatest effect. Similarly, fertilizer application improved root yield ranging from 23.0 to 36.0t/ha, the greatest yield was obtained from the 400kh/ha treatment. However, there was a reduction in yield with the application of 800kg/ha. Post-harvest physiological deterioration was not affected by fertilizer application but dry matter content was enhanced. Time of fertilizer application did not affect yield and other parameters studied. Among the fertilizer rates, the 400kg/ha gave the best root yield and proved to be the most economically profitable as it produced the highest extra benefit of GH¢ 8792.00. Cassava farmers have an option to apply fertilizer to the crop to increase their yield and income without sacrificing quality.

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