2024-03-29T05:29:53Z
https://u-ryukyu.repo.nii.ac.jp/oai
oai:u-ryukyu.repo.nii.ac.jp:02003653
2023-08-03T05:24:56Z
1642838163960:1642838338003
1642838403551:1642838407312
Effects of Planting Date on Emergence, Growth and Yield of Turmeric (Curcuma longa L.) in Okinawa Prefecture, Southern Japan
沖縄県におけるウコンの植付時期が、出芽、生育および収量に及ぼす影響
Ishimine, Yukio
Hossain, Md. Amzad
Motomura, Keiji
Akamine, Hikaru
Hirayama, Takuji
石嶺, 行男
本村, 恵二
赤嶺, 光
平山, 琢二
Emergence pattern
Growth response to seasonal variation
Harvest time
Vegetative and reproductive period
Weed growth
栄養生長および生殖生長時期
雑草の繁栄
収穫時期
出芽パターン
生長の季節的変動
The present study was conducted to evaluate the effects of the temperature and planting date (month) on the\nemergence, growth and yield of turmeric (Curcuma longa L.) plats in Okinawa Prefecture, Southern Japan. Turmeric\nrhizomes were planted on February 15, March 15, April 15, May 15 and June 15 as treatments for the planting date.\nTemperature range of 25-35 °C was optimum for the sprouting of turmeric rhizome-buds, and sprouting did not occur below\n10 °C or above 40 °C. Seedlings elongated well in the temperature range between 25 and 30 °C, but could not survive at\nabove 40 °C. The emergence of the turmeric seedlings in the February, March and April plantings started at nearly the\nsame time, and was completed within June. Shoots of turmeric plants differing in the planting month started to wither at the\nsame time in November, and completely withered in January. Shoot dry weight and yield of turmeric plants were\nsignificantly higher in the February planting followed by the March and April plantings than in late planting in the\nglasshouse experiment, whereas in the field experiment the values of these two parameters were significantly higher in the\nApril planting followed by the March and February plantings than in the late planting. The fields of the turmeric plants in\nthe February and March plantings required additional weeding before emergence because winter and spring weeds\nemerged earlier and grew vigorously. The order of total weed dry weight was as follows: February planting> March planting\n>April planting >May planting >June planting. The emergence pattern, growth and yield of turmeric plants, and weed growth\nin the field experiment suggested that turmeric should be planted in April followed by March in Okinawa, Japan.
沖縄県におけるウコン(Curcuma longa L.)の植付時期(月)が、出芽、生育および収量に及ぼす影響を調査した.その結果、10°C以下と40°C以上では発芽が見られず、最適な発芽温度は、25°Cから35°Cであった.幼植物の生育は、25°Cから30°Cが良く、40°C以上では枯死した.2月、3月、および4月に植付けたウコン根茎はほぼ同じ時期に出芽し始め、6月末までには全て出芽した.沖縄地域では2月~6月と植付け時期を変えてもウコンの地上部は11月頃から黄化が始まり、1月には完全に枯死した.ウコンの地上乾物重と根茎重(収量)は、ガラス室内での実験においては、2月植付区が最も高く、3月、4月植付区の間に差はなかった.5月、6月植付区の収量は極めて低かった.一方、圃場試験区においては、4月植付区が有意に高く、次いで3月、2月植付区の順であった.しかしながら、2月と3月に植付けた区では、ウコンの出芽前に冬雑草および春雑草が繁栄し、除草作業が必要となった.更に雑草の乾物重は、2月植付区が最も高く、次いで3、4、5、6月の植付区の順であった.以上の結果から、沖縄県におけるウコンの植付時期は、4月が最も適しており、次いで3月が良いことが示唆された.
論文
http://purl.org/coar/resource_type/c_6501
日本熱帯農業学会
Japanese Society for Tropical Agriculture (JSTA)
2004-03-01
VoR
http://hdl.handle.net/20.500.12000/5010
0021-5260
AN00199779
熱帯農業
Japanese Journal of Tropical Agriculture
1
48
16
10
eng
open access