Vegetation phenology models are important for examining the impact of climate change on the length of the growing season and carbon cycles in terrestrial ecosystems. However, large uncertainties in present phenology models make accurate assessment of the beginning of the growing season (BGS) a challenge. In this study, based on the satellite-based phenology product (i.e. the V005 MODIS Land Cov...

In this paper we present a framework for modelling potential species distribution (PSD) of balsam fir [bF; Abies balsamea (L.) Mill.] as a function of landscape-level descriptions of: (i) growing degree days (GDD: a temperature related index), (ii) landsurface wetness, (iii) incident photosynthetically active radiation (PAR), and (iv) tree habitat suitability. GDD and land-surface wetness are d...

The thermal environment of a crop is one the prime factors enhancing growth and production by regulating its physiological processes at different phenophases. To study impact regime on spring–summer-grown black gram (variety Pant Urd 31), an experiment was conducted with sowing dates (from first to third week March), soil application cobalt (Co) foliar sprays potassium (K) boron (B) in various ...

Abstract Native Cirsium species play an important role in landscapes across North America. Hadroplontus litura (F.) (formerly Ceutorhynchus ), the stem-mining weevil and biological control agent of Canada thistle [ arvense (L.) Scop.] can complete its life cycle on five native to upper Midwest. Although these are within fundamental host range H. , as determined by host-range tests, we wanted ex...

Intermediate wheatgrass (Thinopyrum intermedium) (IWG) is a perennial grass being domesticated for grain production with potential to provide economic return and ecosystem services across broad geographic range in North America, yet optimum seeding dates biomass yield are unknown. Our objective was determine the effect of late-summer, fall, spring on grain-type IWG population. Trials were condu...

This study addresses relationships between leaf phenology, xylogenesis, and functional xylem anatomy in two ring-porous oak species, the temperate Quercus robur and the sub-Mediterranean Q. pyrenaica. Earlywood vessel (EV) formation and leaf phenology were monitored in 2012 and 2013. Ten individuals per species were sampled at each of three sites located in NW Iberian Peninsula. EV areas measur...

With the expansion of cucumber cultivation, many growers continue to experience extreme weather and environmental issues. This study aimed examine model effects low temperature (LT) poor light (PL) stresses on growth. The experiment was designed as an orthogonal that analyzed temperature, light, duration. daily maximum/minimum temperatures were set per following four levels: 13 °C/3 °C, 16 °C/6...

Tropical maize (Zea mays L.) represents a valuable genetic resource containing unique alleles not present in elite temperate maize. The strong delay in fl owering in response to long daylength photoperiods exhibited by most tropical maize hinders its incorporation into temperate maize breeding programs. We tested the hypothesis that diverse tropical inbreds carry alleles with similar effects at...

climate is one of the most important factors that influence the quality and quantity of crops. understanding the natural features of any region, especially about the climate, can play a major role in making plans and land use planning. sugar beet, is one of the major industrial plants, that in addition to producing one of the most fundamental basic needs of society, namely sugar, it can have ot...