Results 181 to 190 of about 5,376 (197)

Frost Avoidance by Selection for Late Budburst in Picea sitchensis

The Journal of Applied Ecology, 1985
1) The date of the budburst of lateral shoots on young Picea sitchensis (Bong.) Carr. trees can be estimated from mean daily temperatures using the model: T = a + b exp (rC), where T is day degrees > 5 IC accumulated from 1 February and C is number of chill days < 5 IC counted from 1 November (Cannell & Smith 1983).
M. G. R. Cannell, M. B. Murray, L. J. Sheppard   +2 more
openaire   +1 more source

Rootstock effect on budburst of ‘Premier’ low-chill peach cultivar

Scientia Horticulturae, 2007
Abstract To determine the effect of rootstock with different chilling requirements on the bud break of the low-chill ‘Premier’ peach cultivar (150 CH), the trees grafted on ‘Newbelle’ (150 CH) and ‘O’Henry’ (750 CH) seedling rootstocks were forced in a glasshouse after being subjected to 100, 200 and 300 CU chilling.
S. Maneethon, N. Kozai, K. Beppu, I. Kataoka   +3 more
openaire   +1 more source

Budburst in Sultana grapevine as influenced by salinity and rootstock

Australian Journal of Experimental Agriculture and Animal Husbandry, 1979
The time to budburst in Sultana grapevine growing on its own root system, or else grafted to Dogridge, 161 3, Harmony, Ramsey (often incorrectly referred to as Salt Creek) rootstocks, was studied in plants that had been irrigated with 0, 12.5, 25, 50 or 75 mM solutions of chloride salts under glasshouse conditions during the previous growing season ...
WJS Downton, AW Crompton
openaire   +1 more source

Phenological timings of leaf budburst with climate change in Japan

Agricultural and Forest Meteorology, 2008
Phenological timing of leaf budburst in plants is important for growth, since early budburst timing extends the growth period of the plant. We estimated the effect of climate change on the phenological budburst timing of four trees throughout four sites in Japan, a region with few studies on this topic.
Hideyuki Doi, Izumi Katano
openaire   +1 more source

Relationship between sugar maple budburst phenology and pear thrips damage

Canadian Journal of Forest Research, 1991
The relationship between budburst phenology and damage by the pear thrips (Taeniothripsinconsequens (Uzel) (Thysanoptera: Thripidae)) to sugar maple (Acersaccharum Marsh.) foliage was investigated in two studies. In the first study, seedlings in cages were exposed to adult thrips at different stages of budburst.
T. E. Kolb, D. A. J. Teulon
openaire   +1 more source

Climatic determinants of budburst seasonality in four temperate‐zone tree species

New Phytologist, 1999
Several physiological processes controlling tree phenology remain poorly understood and in particular bud dormancy. Many studies have emphasised the action of chilling temperatures in breaking dormancy. However, the effect of the preceding summer temperatures has rarely been investigated although there is some evidence that they may be involved in the ...
ISABELLE CHUINE, PIERRE COUR
openaire   +1 more source

Improving the budburst phenology subroutine in the forest carbon model PnET

Ecological Modelling, 2007
Abstract The timing of leaf expansion in spring and leaf senescence in fall determines growing season length; hence leaf phenology is important in modelling carbon production. Previous work monitoring net ecosystem exchange using eddy flux technology found phenological timing to be a key factor determining ecosystem carbon balance.
Jyh-Min Chiang, Kim J. Brown
openaire   +1 more source

Predicted changes in the synchrony of larval emergence and budburst under climatic warming

Oecologia, 1992
The impact of climatic warming on the synchrony of insect and plant phenologies was modelled in the case of winter moth (Operophtera brumata) and Sitka spruce (Picea sitchensis) in the Scottish uplands. The emergence of winter moth larvae was predicted with a thermal time requirement model and the budburst of Sitka spruce was predicted from a ...
R C, Dewar, A D, Watt
openaire   +2 more sources

Thermal Time, Chill Days and Prediction of Budburst in Picea sitchensis

The Journal of Applied Ecology, 1983
where thermal time was day degrees > 5 IC accumulated from 1 February, and chill days were the number of days
M. G. R. Cannell, R. I. Smith
openaire   +1 more source

Temporal synchrony of Thaumetopoea processionea egg hatch and Quercus robur budburst

Journal of Pest Science, 2012
Field observations on egg hatch of Thaumetopoea processionea suggest that temporal asynchrony with Quercus robur budburst leads to starvation, retarded neonate development and mortality. However, T. processionea neonates are generally well adapted to variable between-tree and within-tree budburst phenology reflecting the species’ close bond to its host.
Eiko Wagenhoff, Rainer Blum, Katharina Engel, Holger Veit, Horst Delb   +4 more
openaire   +1 more source