the flowering phase of apple trees is the most critical step in relation with low temperatures and frost events. therefore, forecasting the time of flowering is important. if a model can predict the exact time of flowering, it would be feasible to care for flowers agianst late spring freezing (lsf). in this study, we evaluated three temperature-base chilling models namely: chilling hours (ch), ...

The wild dioecious plant Corema album, endemic to the Atlantic coast of Iberian Peninsula, has potential become a new crop and integrate berry fruit market. Due its potential, aim this study was propose BBCH (Biologische Bundesanstalt, Bundessortenamt CHemical Industry) scale for species. Based on field observation, principal growth stages were described sequentially established. Photographs st...

in order to investigate effect of deficit irrigation on phenological stages and yield of soybean cultivars, an experiment was conducted as split plots based on randomized complete block design with three replications at agricultural research farm, university of guilan in 2009. main factor was included four irrigation levels based on potential moisture 30-35 (i1), 50-55 (i2), 70-75 (i3) centibar...

Shifting plant phenology (i.e., timing of flowering and other developmental events) in recent decades establishes that species and ecosystems are already responding to global environmental change. Earlier flowering and an extended period of active plant growth across much of the northern hemisphere have been interpreted as responses to warming. However, several kinds of environmental change hav...

Abstract Weather index insurance (WII) has been a promising innovation that protects smallholder farmers against drought risks and provides resilience adverse rainfall conditions. However, the uptake of WII hampered by high spatial intraseasonal basis risk. To minimize risk, standard approaches to designing based on seasonal cumulative have shown be ineffective in some cases because they do not...

Concern regarding the biological effects of climate change has led to a recent surge in research to understand the consequences of phenological change for species interactions. This rapidly expanding research program is centered on three lines of inquiry: (1) how the phenological overlap of interacting species is changing, (2) why the phenological overlap of interacting species is changing, and...

The automatic classification of historical data myriad diverse meteorological sequences in the annual period can help to find climate differences through key phenology rice. In this paper, a hybrid gradients-shape dynamic time warping (HGSDTW) algorithm is proposed measure similarity during rice growth at various locations. weighting calculation Euclidean distance uses form factor jointing and ...

The functional adjustments of winter-deciduous perennials to Mediterranean conditions have received little attention. The objectives of this study were: (i) to determine whether Amelanchier ovalis, a winter-deciduous shrub of Mediterranean and sub-Mediterranean regions, has nutritional and phenological traits in common with temperate zone deciduous trees and shrubs and (ii) to determine the con...

Although habitually considered as a whole, xylogenesis is a complex process of division and maturation of a pool of cells where the relationship between the phenological phases generating such a growth pattern remains essentially unknown. This study investigated the causal relationships in cambium phenology of black spruce [Picea mariana (Mill.) BSP] monitored for 8 years on four sites of the b...

For many species in seasonal environments, warmer springs associated with anthropogenic climate change are causing phenological changes. Within ecological communities, the timing of interactions among species may be altered if the species experience asymmetrical phenological shifts. We present a model that examines the consequences of changes in the relative timing of herbivory and pollination ...