• Original Research Article

    Evaluation of Seasonal Film Biodegradability, Soil Environment, and Soybean Growth of Biomass-based Biodegradable Mulching Film

    바이오매스 기반 생분해성 멀칭 필름의 시기별 필름붕괴 및 토양환경과 콩 작물의 생육 평가

    Hyun-Sug Choi, Seo-Yoon Gu, Ji-Sik Jung

    최현석, 구서윤, 정지식

    This study evaluated the effects of biomass-based biodegradable (BD) film mulching in a soybean (Glycine max (L.) Merr.) field on the … + READ MORE
    This study evaluated the effects of biomass-based biodegradable (BD) film mulching in a soybean (Glycine max (L.) Merr.) field on the film biodegradability, seasonal soil environment, and crop growth. Non-mulching (NM) and mulching film treatments were applied, including polyethylene (PE), commercial BD of R (polybutyrate adipate terephthalate [PBAT] base), and biomass-based BD, T1 (PBAT-based, three-layer structure), T2 (polybutylene adipate [PBA] base), and T3 (PBA base). BD mulching films rapidly disintegrated and were present in the T3-BD film at 60 days after transplanting (DAT). Tensile strength and elongation of the BD films decreased significantly at 60 DAT, and the decrease was the greatest in the T2 and T3 films. The total weed incidence and fresh weight were highest in the NM and T3 mulching plots. The PE mulching plots increased the daily average maximum temperature by approximately 35-40 °C in July and August and maintained relatively constant soil moisture levels. Soil hardness was high in the NM and T3 plots. Soil electrical conductivity was the highest in the T1, T2, and T3 mulching plots before harvest. Soil NO3-N, P2O5, and MgO levels increased in the PE plots. The soil C/N ratio was the highest in the PE plots at 25.5, whereas the R, T1, and T2 plots showed low levels of 14.2–15.6. The T3-treated crops had the fewest branches at 30 DAT. Leaf SPAD decreased in the T1-, T2-, and T3-treated crops at 120 DAT. Soybean yields per 10 a were obtained in the order of R (2155.9 kg) > PE (1808.4 kg) > T2 (1678.5 kg) > T1 (1535.4 kg) > T3 (1437.1 kg), and NM (1407.4 kg) treatments. T3 mulching films contained highly BD materials, resulting in decreased crop yields due to the weed occurrence and soil hardening caused by early biodegradability, which required film materials that could suppress early degradation. - COLLAPSE
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    1 March 2026

  • Original Research Article

    Identification of Pre-harvest Sprouting Genotypes and Phenotypic Analysis of Germination Traits in Wheat

    분자마커를 이용한 밀 수발아저항성 유전자형 및 발아특성 분석

    Ye Rin An, Jin-Kyung Cha, Youngho Kwon, So-Myeong Lee, Seung-Kyo Jeong, Woo-Jae Kim, Hyeonjin Park

    안예린, 차진경, 권영호, 이소명, 정승교, 김우재, 박현진

    Pre-harvest sprouting (PHS) is a major constraint affecting wheat grain quality under humid and unstable climatic conditions. This study evaluated PHS-related germination … + READ MORE
    Pre-harvest sprouting (PHS) is a major constraint affecting wheat grain quality under humid and unstable climatic conditions. This study evaluated PHS-related germination traits in 164 wheat (Triticum aestivum L.) cultivars and breeding lines, and examined the applicability of previously reported molecular markers for PHS-related breeding. Mean germination percentage (MGP), mean germination time (MGT), and mean germination speed (MGS) were measured using a controlled germination assay. Genotyping was performed using the KASP marker TaMFT_1617R, which targets a functional single nucleotide polymorphism in the promoter region of TaMFT-3A, a gene associated with seed dormancy. In addition, seed coat color-related variation was assessed using STS-Myb10 markers and phenol reaction-based scoring. The TaMFT-3A allele type showed a significant association with MGT, indicating differences in germination onset between allelic groups, whereas no significant differences were detected for MGP or MGS. In contrast, the Myb10 genotype and phenol-based seed coat color scores were significantly associated with MGS, but not with MGP or MGT. These results suggest that TaMFT-3A and seed coat color-related traits influence distinct components of germination behavior. Overall, the evaluated markers were not sufficient to reliably discriminate PHS tolerance based solely on germination traits under the experimental conditions. However, they provide useful supplementary information for early-stage selection when combined with phenotypic evaluation under PHS-inducing environments. This study highlights the importance of integrating molecular markers with environmental and phenotypic data for the effective selection of a PHS-tolerant wheat germplasm. - COLLAPSE
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    1 March 2026

  • Original Research Article

    Response of Maize Growth and Yield to Subsurface Drip Irrigation and Nitrogen Fertigation
    Ye Rin Kim, Jong Hyuk Kim, Seung Han Cho, Yeon Ju Lee, Ju Hyeon Ha, Seo Young Mun, Il Rae Rho
    This study aimed to determine the effectiveness of liquid fertilizer (LF) and nitrogen (N) topdressing using a subsurface drip irrigation (SDI) system … + READ MORE
    This study aimed to determine the effectiveness of liquid fertilizer (LF) and nitrogen (N) topdressing using a subsurface drip irrigation (SDI) system in maize cultivars. The topdressing was applied as a 1% concentration of LF and N dissolved into 19.2 mm 10a-1 water at the V6 and silking stages, respectively. The photosynthetic indicators were higher in the middle and late growth stages in the topdressing treatments with SDI than in the control treatment. Additionally, root growth, plant growth, and yield were higher in all topdressing treatments than in the control treatment. For the ‘Ilmichal’ cultivar (a waxy corn), the yield was highest in the LF and N8 (topdressing 8 kg N 10a-1) treatments, whereas for the ‘VSC03’ cultivar (a super sweet corn), it was highest in the N8 treatment. However, excessive N fertilization, such as with N10 (topdressing 10 kg N 10a-1), slightly decreased the yield. Therefore, this study confirmed that topdressing with SDI can enhance growth and yield when applied appropriately. Additionally, the LF treatment, which was applied at the same N level as the optimal N8 treatment, showed comparable effects on growth and yield. - COLLAPSE
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    1 March 2026
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