Consequently, day-length change during spring and autumn occurs much faster at high latitudes. ❋ Unknown (2009)
Better climate/crop models specific to agriculture in high-latitude regions (i.e., special crop varieties, long day-length effects) are also needed for future assessments. ❋ Unknown (2009)
Pay attention to climate recommendations when buying onion seeds or sets because they are day-length sensitive; to thrive, they need a certain number of daylight hours, which is determined by your latitude. ❋ Clark Frasier (2003)
In some cases (including the above examples) varieties are available that do not have these day-length restrictions. ❋ Unknown (1996)
During short day-length periods when female flower production is stimulated, higher fruit production can be expected. ❋ Unknown (1993)
In general, indigenous South American cultivars will only produce reasonable yields with a day-length of ❋ Unknown (1987)
Early-maturing cultivars are not suitable for the tropics, as they require a long day-length, but a few late-maturing temperate cultivars have given moderate success in parts of the tropics. ❋ Unknown (1987)
When grown under a 14-15 hour photoperiod the vegetative growth is good, but there is little production of tuberous roots: short day-length gives smaller, more bushy plants and good tuberisation. ❋ Unknown (1987)
It is considered to require approximately 12 hours day-length for successful growth. ❋ Unknown (1987)
Recent experiments have shown that there is an interaction between day-length and day/night temperatures; both flowering and tuberisation are inhibited in 16 hour days, but with 8 hour days tubers formed regardless of temperature, but flowering was dependent upon the temperature regime used. ❋ Unknown (1987)
The optimum day-length for tuber formation in oca is 9 hours, while 13 hours is suitable for its vegetative development. ❋ Unknown (1987)
Plant growth requirements are arranged under the main headings of temperature, rainfall and soil, with additional factors such as altitude and day-length noted where they are crucial. ❋ Unknown (1987)
Day-length - the response to day-length varies with the cultivar: many of the red fleshed types require long days in order to produce flowers and seed. ❋ Unknown (1987)
Day-length - a day-length of less than 12 hours is required for tuberisation. ❋ Unknown (1987)
Only a minute proportion could even be considered for commercial culture under the changed day-length and temperature conditions. ❋ Unknown (1987)
D. trifida developed under equatorial conditions where rainy seasons are long and day-length changes minimal, and the growth season of this plant (10-11 months) is not as closely related to annual cycles as is the growth season of many other species. ❋ Unknown (1987)
He needed, said Cochrane -- as if this order also could be filled -- a day-length not more than six hours shorter or longer than an Earth-day. ❋ Murray Leinster (1935)
If the day-length here was suitable, all his planning was successful. ❋ Murray Leinster (1935)
To discover these important regions of the plant's genome, researchers interbred two tropical, photoperiod-sensitive corn lines (one from Mexico; one from Thailand) with two photoperiod-insensitive corn lines from the United States, and grew out hundreds of progeny lines in North Carolina (long day-length summers) and in Florida (short day-length winters). ❋ Unknown (2010)
The day-length recordings enable the researchers to examine a child's natural speech. ❋ Unknown (2010)
