• Title/Summary/Keyword: Crop cultivation area

Search Result 556, Processing Time 0.025 seconds

Performance of Mixed Cropping of Barley and Hairy Vetch as Green Manure Crops for Following Corn Production

  • Shim, Kang Bo;Kim, Min Tae;Kim, Sung Gook;Jung, Kun Ho;Jeon, Weon Tai;Shin, Su Hyun;Lee, Jae Un;Lee, Jong Ki;Kwon, Young Up
    • Korean Journal of Environmental Agriculture
    • /
    • v.37 no.3
    • /
    • pp.160-165
    • /
    • 2018

  • BACKGROUND: Mixed cropping of legume and grass was effective system in view point of providing organic matter and nitrogen or reducing the nitrogen starvation of following crop. The relation of the change of N and P constituents depending on the cropping types and those effects on the growth and nutrient uptake of the following crop were observed. METHODS AND RESULTS: Three cropping types, hairy vetch mono cropping, barley mono cropping, and mixed cropping of hairy vetch and barley were applied. Soil properties, growth characteristics, and nitrogen production of green manure crops were observed. In additions, the effect of cropping types on the growth pattern of corn as the following crop was observed. In the mixed cropping system, creeping type hairy vetch climbed to the erect type barely for light utilization resulting in improvement of light interception rate and higher LAI (Leaf Area Index) than in mono cropping. Mixed cropping showed higher biomass production and soil nitrogen availability among the cropping types, indicating relatively much more nutrient supply and higher yield production of following crop. CONCLUSION: Mixed cropping showed relatively higher LAI (dry matter) mainly because of intense competition for light utilization usually after flowering stage. Mixed cropping also showed relatively higher yield of corn, the following crop rather than other types, mainly due to the more biomass production potential and higher N and P production ability. Therefore, mixed cropping was adaptable method to reduce or replace chemical fertilizer application for environmentally-friendly agriculture.

  • https://doi.org/10.5338/KJEA.2018.37.3.29 인용 PDF KSCI

Effects of Different Nitrogen Application Levels on Yield and Protein Content of Rice Varieties in Korea

  • Jinseok Lee;Jong-Seo Choi;Shingu Kang;Dae-Woo Lee;Woonho Yang;Seuk-Ki Lee;Su-Hyeon Sin;Min-Tae Kim
    • Proceedings of the Korean Society of Crop Science Conference
    • /
    • 2022.10a
    • /
    • pp.123-123
    • /
    • 2022

  • In order to evaluate the effect of nitrogen application levels on yield and protein content of rice varieties, a field experiment was conducted at National Institute of Crop Science of Korea in 2020. Five levels(0, 3, 5, 7, and 9 kg·10a-1) of nitrogen fertilizer were treated to six Korean rice varieties. The nitrogen uptake amount, soil nitrogen content before and after rice cultivation, milled rice yield, and protein content in head rice were analyzed. As the treatment of nitrogen fertilizer increased, the nitrogen uptake amount of plants increased significantly. However, changes in nitrogen content in the soil before and after rice cultivation were different for each cultivar. The amount of nitrogen change in the soil decreased as the amount of nitrogen application increased in the three cultivars of Haepum, Gopum, and Odae, and the other three cultivars showed the opposite trend. As a result of correlation analysis of nitrogen application amount, nitrogen uptake amount, milled rice yield, and protein content of head rice, the five varieties except for Haepum showed a high correlation between these factors. The amount of nitrogen application and nitrogen uptake of plant showed a positive correlation about the milled rice yield and protein content of head rice. In particular, the protein content in head rice appeared to be more affected by nitrogen uptake amount than nitrogen application amount. As a result of this study, the yield and protein content of rice had positive correlations with the level of nitrogen fertilizer, and had a high correlation with the nitrogen absorption of plants.

  • PDF

Effect of Sowing Dates on Agronomic Traits and Quality of Seed for Soybean [Glycine max (L.) Merr.] in Southern Area of Korea

  • Hye Rang Park;Sanjeev Kumar Dhungana;Beom Kyu Kang;Jeong Hyun Seo;Jun Hoi Kim;Su Vin Heo;Ji Yoon Lee;Won Young Han;Hong-Tai Yun;Choon Song Kim
    • KOREAN JOURNAL OF CROP SCIENCE
    • /
    • v.68 no.4
    • /
    • pp.313-326
    • /
    • 2023

  • Owing to adverse weather conditions, there is a heightened focus on actively researching the regulation of the sowing date in field crop cultivation. Soybean, a prominent field crop with extensive acreage and production, is a photophilic and thermophilic crop characterized by short-day photoperiodism. Identifying the optimal sowing time is crucial for mitigating the effects of severe weather conditions on soybean yield. Precise control over the timing of soybean sowing is the key to minimizing yield reduction due to unfavorable weather conditions. Temperature, photoperiod, and their interplay are the most significant factors influencing soybean cultivation among various weather factors. We conducted an experiment using three Korean soybean cultivars with varied maturities (Hwangkeumol: early maturing and Daewonkong and Pungsannamulkong: late maturing) in 2013 and 2014. Our investigation covered aspects of soybean growth, development, yield components, isoflavones, and visual seed quality. Across all three varieties, isoflavone levels increased with later sowing dates, while other measured components exhibited significant variations based on the sowing date. This study also provides valuable insights for the selection of suitable cultivars that perform well in soybean cultivation at various durations of maturity.

  • https://doi.org/10.7740/kjcs.2023.68.4.313 인용 PDF