Proceedings of the Korean Society of Crop Science Conference (한국작물학회:학술대회논문집)
- 2017.06a
- /
- Pages.234-234
- /
- 2017
Comparison of yield and its components in spring sown wheat and barley by path coefficient analysis
- Choi, In-Bae (National Institute of Crop Science, RDA) ;
- Kim, Hak-Sin (National Institute of Crop Science, RDA) ;
- Hwang, Jae-Bok (National Institute of Crop Science, RDA) ;
- Bae, Hui-Su (National Institute of Crop Science, RDA) ;
- Ku, Bon-Il (National Institute of Crop Science, RDA) ;
- Park, Hong-Kyu (National Institute of Crop Science, RDA) ;
- Par, Tae-Seon (National Institute of Crop Science, RDA) ;
- Lee, Geon-Hwi (National Institute of Crop Science, RDA)
- Published : 2017.06.04
Abstract
Recent abnormal weather, especially continued rainfall during sowing season causes difficulty in proper sowing of wheat and delayed sowing after November 15 is concerned about freezing damage during winter, resulting in reduction of wheat yield. To correspond government policy of crop sufficiency improvement and produce and supply raw wheat and barley steadily, expansion of cultivation area is necessary and spring sowing of wheat is required. To obtain basic information on the improvement of spring sown wheat and barley production, comparison and path coefficients analysis was conducted for yield and yield related components from autumn and spring sown wheat and barley. Path analyses were known as very useful in clarifying the effects of yield components on grain yield formation, which were not accurately reflected in simple correlation anaylses. Most cultivated 5 wheat and 9 barley cultivars were sown on October and February at Cheon-ju province according to standard sowing method. For the spring sowing of wheat and barley, the varieties having vernalization degree I~III are seeded in the mid of February and seeding rate is 200~250kg/ha which is increased by 25% than autumn sowing. N-fertilizer of 95 kg/ha and the same amount of P, K dressed in autumn are applied at once as basal fertilizer. The magnitude of direct effect in each yield components on yield was in sequence as follows. In autumn wheat, grain number per