Effect of Several Cultivation Factors on the Overwintering Ability of Napiergrass in the Southern Kyushu

Japanese Journal of Crop Science

Kiichi FUKUYAMA¹  Yasuyuki ISHII¹  Koji ITO¹ 

关键词: Altitude;    越冬性;    Change after establishment;    刈取り方法;    Cutting method;    経年変化;    Napiergrass;    ネピアグラス;    Overwintering ability;    標高;    Variety;    品種;   

DOI  :  10.1626/jcs.69.209

学科分类：农业科学（综合）

来源: Nihon Sakumotsu Gakkai / Crop Science Society of Japan

【 摘 要 】

To estimate the possibility of napiergrass for cultivating as a perennial in southern Kyushu, the overwintering ability, as assessed by the percentage of overwintered plants (POP) in early May, was determined for several cultivation factors. To maintain high overwintering ability, it was important to conduct the final cutting just before the first frost date at about 20 cm above ground surface. The effects of planting date from spring through summer and of the year after establishment within 3 years on POP were small. On the contrary, the differences in POP among years and among different altitudes were large. The variety of Merkeron had a superior overwintering ability in comparison with Wruk wona. The relationship between the minimum daily temperature during the overwintering and POP was positively logarithmic in two varieties of Merkeron had POP exceeding 50% in more than half the areas in Miyazaki, even under the coldest winter of the seven seasons examined, suggesting its stable overwintering ability in southern Kyushu.

【 授权许可】

Unknown