Promoting Sustainable Sorghum Production: The Role of Ratoon Cultivation and Fertilizer Management

Authors

  • Marfiatun Mahpuzah Agronomy and Horticulture Study Program, Postgraduate Program, Faculty of Agriculture, IPB University, Jl. Meranti, IPB Dramaga Campus. Bogor 16680, West Java, Indonesia
  • Didy Sopandie Department of Agronomy and Horticulture, Faculty of Agriculture IPB University, Jl. Meranti, IPB Dramaga Campus. Bogor 16680, West Java, Indonesia https://orcid.org/0000-0001-9972-1892
  • Desta Wirnas Department of Agronomy and Horticulture, Faculty of Agriculture IPB University, Jl. Meranti, IPB Dramaga Campus. Bogor 16680, West Java, Indonesia https://orcid.org/0000-0001-7541-7044
  • Trikoesoemaningtyas Department of Agronomy and Horticulture, Faculty of Agriculture IPB University, Jl. Meranti, IPB Dramaga Campus. Bogor 16680, West Java, Indonesia https://orcid.org/0000-0002-7657-0179

DOI:

https://doi.org/10.29244/jtcs.12.01.47-58

Keywords:

fertilization, forage genotype, ratoon crop, second ratoon

Abstract

This study investigated the biomass productivity of sorghum main crop, first ratoon, and second ratoon. A randomized complete block design was employed for the main crop experiment, with eight sorghum genotypes (NS2-19, NS2-102, NS2-109, NS2-111, NS2-140, IPB 4, IPB 8, and “Numbu”) as the treatment factor. The ratoon crop was designed using a Split Plots Design with two treatment factors and three replications. The first factor was fertilizer treatment on the ratoon crops, with two levels: complete N, P, and K fertilizer (urea 133 kg.ha-1, KCl 100 kg.ha-1, and SP-36 100 kg.ha-1) and N fertilizer only (urea 133 kg.ha-1); this factor was arranged as the main plot. The second factor comprised eight elite sorghum lines, the same as those used in the main crop experiment, arranged as subplots. The results indicated that complete NPK fertilization and N fertilizer alone produced similar biomass productivity in sorghum ratoon crops. Among the genotypes, NS2-140 demonstrated the highest biomass productivity in the main crop, NS2-109 in the first ratoon, and NS2-19 in the second ratoon. The second ratoon exhibited the highest biomass yield compared to the main crop and the first ratoon.

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Published

2025-02-28

How to Cite

Mahpuzah, M., Sopandie, D., Wirnas, D., & Trikoesoemaningtyas. (2025). Promoting Sustainable Sorghum Production: The Role of Ratoon Cultivation and Fertilizer Management. Journal of Tropical Crop Science, 12(01), 47–58. https://doi.org/10.29244/jtcs.12.01.47-58