Productivity of Sorghum × Sudan grass Hybrid Affected by Combined Fertilization with Different Rates of Livestock Manure Compost and Chemical Fertilizer in Saemangeum Reclaimed Tideland

Hyeoun-Suk Cho; Jin-Hee Ryu; Young-Tae Shin

doi:10.7740/kjcs.2025.70.1.026

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Original Research Article

Productivity of Sorghum × Sudan grass Hybrid Affected by Combined Fertilization with Different Rates of Livestock Manure Compost and Chemical Fertilizer in Saemangeum Reclaimed Tideland 새만금간척지에서 가축분퇴비와 화학비료의 절충시비에 따른 수수×수단그라스 교잡종의 생산성

1 March 2025. pp. 26-33

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Abstract

Newly reclaimed tideland is typically sandy and has very low organic matter content and soil nutrient retention capacity. Therefore, the yield of crops produced on reclaimed land is lower than that on regular farmland. Additionally, fertilizers used to grow crops can cause environmental pollution. When cultivating sorghum × Sudan grass hybrids in the Saemangeum reclaimed tideland, we found that the soil nutrient retention and dry matter production could be increased by applying a mixture of organic and inorganic fertilizers. After the test, soil organic matter and available phosphorus contents were higher in the livestock manure compost (LMC) application area. The production of sorghum × Sudan grass hybrids was in the following order: CF > N70+LMC30 = N50+LMC50 > N30+LMC70 > LMC > NF. The fertilization efficiency of inorganic nutrients applied to soil by mixing LMC and CF (chemical fertilizer) was highest for potassium, followed by that of nitrogen and phosphorus. The nitrogen and potassium fertilization efficiency increased as the amount of chemical fertilizer applied increased. Therefore, it was proposed that it would be better to apply fertilizer mixed with compost rather than chemical fertilizer alone when cultivating sorghum × Sudan grass hybrid in the Saemangeum reclaimed land to improve crop production and soil organic matter. The optimal mixing ratio of organic fertilizer (LMC) and chemical fertilizer (T-N) was N70+LMC30 and N50+LMC50.

Keywords

livestock manure compost

chemical fertilizer

sorghum × Sudan grass hybrid

Saemangeum reclaimed tideland

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Information

Publisher :The Korean Society of Crop Science
Publisher(Ko) :한국작물학회
Journal Title :The Korean Journal of Crop Science
Journal Title(Ko) :한국작물학회지
Volume : 70
No :1
Pages :26-33
Received Date : 2024-11-15
Revised Date : 2024-12-05
Accepted Date : 2024-12-07
DOI :https://doi.org/10.7740/kjcs.2025.70.1.026

The Korean Journal of Crop Science ISSN:0252-9777(Print) 2287-8432(Online) 한국작물학회지

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