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Effect of jatropha mulch types and inorganic fertilizers on amaranth (Amaranthus hybridus) growth in Akure Southwestern Nigeria

Author Affiliations

  • 1Department of Agricultural Technology, Ekiti State Polytechnic, Isan-Ekiti, Nigeria
  • 2Department of Crop, Soil and Pest Management (CSP), Federal University of Technology, Akure, Nigeria

Res. J. Agriculture & Forestry Sci., Volume 11, Issue (2), Pages 33-38, July,8 (2023)


Experimental fieldwork was conducted at the CSP Departmental Research Farm at Federal University of Technology Akure. This was to evaluate the effect of Jatropha mulch types and inorganic fertilizers on Amaranthus hybridus growth. The experimental field size was 0.01 hectare (14mx8m). With five treatments and three replications, a Randomized Complete Block Design (RCBD) was used. The plot measured 2mx2m (4m2), with a 1m walkway separating it from the replicates. The treatments and application rate were the control, Jatropha seed cake at 2t ha-1, Jatropha ground husk at 2t ha-1, NPK 20:10:10 at 200kg ha-1, and urea at 100kg ha-1. The data obtained on growth parameters were statistically analyzed through Analysis of Variance (ANOVA). The data obtained were subjected to SPSS version 19, and the treatment means were compared using Duncan's Multiple Range Test (DMRT). Results indicated that the incorporation of Jatropha mulches significantly (p<0.05) improved the soil organic carbon (SOC), total N, available P, exchangeable bases, and growth parameters of amaranth (Amaranthus hybridus) when compared with control, urea, and NPK treatments; this may be due to the higher nutrient and organic carbon content found in Jatropha cake and husk. This study showed that jatropha mulches improve soil quality for sustainable crop production by removing heavy metal residues left behind by inorganic fertilizers, improving the environment, and elevating living standards through the consumption of healthy vegetables as a good diet.


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