Results 11 to 20 of about 300,292 (253)

Model Development of the Phenological Cycle from Flower to Fruit of Strawberries (Fragaria × ananassa)

open access: yesAgronomy, 2023
Strawberries are a very important economic crop; thus, a lot of research has been conducted on several production areas. However, phenological performance is still lacking information, especially when it comes to modeling.
Nelda Hernández-Martínez   +5 more
doaj   +1 more source

Increasing maize yields in Northeast China are more closely associated with changes in crop timing than with climate warming

open access: yesEnvironmental Research Letters, 2021
An understanding of mechanisms that underlie the steady increase in crop yields over recent decades is important for promotion of future sustainable yield gains and maintenance of future food security.
Yi Zhang, Yanxia Zhao, Qing Sun
doaj   +1 more source

Estimating stocking weights for Atlantic salmon to grow to market size at novel aquaculture sites with extreme temperatures

open access: yesFrontiers in Marine Science, 2023
Land-based hatcheries are now capable of growing large Atlantic salmon (Salmo salar) post-smolts (approximately 150 – 1000 g), which means that marine net-pens can be stocked with substantially larger fish compared to traditional stocking sizes (< 150 
Danielle P. Dempsey   +6 more
doaj   +1 more source

Heat unit requirement and performances of litchi under Sub-Himalayan terai region of West Bengal

open access: yesJournal of Horticultural Sciences, 2022
To determine the heat unit requirement and assess its subsequent effects on flowering and fruiting characteristics, a field experiment was conducted during 2018-19 with seven cultivars of litchi viz., Calcuttia, Elaichi, Bedana, Bombai, China, Shahi and
NILESH BHOWMICK, Saidiksha Subba
doaj   +1 more source

High resistance to climatic variability in a dominant tundra shrub species [PDF]

open access: yesPeerJ, 2019
Climate change is modifying temperature and precipitation regimes across all seasons in northern ecosystems. Summer temperatures are higher, growing seasons extend into spring and fall and snow cover conditions are more variable during winter.
Victoria T. González   +5 more
doaj   +2 more sources

Thermal Time as a Parameter to Determine Optimal Defoliation Frequency of Perennial Ryegrass (Lolium perenne L.) and Pasture Brome (Bromus valdivianus Phil.)

open access: yesAgronomy, 2020
The herbage mass and nutritional value of harvested forage are fundamental determinants of the production potential of pastoral systems. The objective of this study was to evaluate the growth dynamics and accumulated herbage mass expressed in dry matter (
Iván Calvache   +4 more
doaj   +1 more source

Do growing degree days predict phenology across butterfly species? [PDF]

open access: yesEcology, 2015
Global climate change is causing shifts in phenology across multiple species. We use a geographically and temporally extensive data set of butterfly abundance across the state of Ohio to ask whether phenological change can be predicted from climatological data.
Heather L. Cayton   +4 more
openaire   +1 more source

Initial growth and development of southern sandbur based on thermal units [PDF]

open access: yesPlanta Daninha, 2014
Availability of basic information on weed biology is an essential tool for designing integrated management programs for agricultural systems. Thus, this study was carried out in order to calculate the base temperature (Tb) of southern sandbur (Cenchrus ...
E.C.R. Machado   +5 more
doaj   +1 more source

Growth model of the pineapple guava fruit as a function of thermal time and altitude

open access: yesIngeniería e Investigación, 2016
The growth of the pineapple guava fruit is primarily stimulated by temperature but is also influenced by other climactic factors, such as altitude.
Alfonso Parra-Coronado   +2 more
doaj   +1 more source

SENSE-GDD: A Satellite-Derived Temperature Monitoring Service to Provide Growing Degree Days

open access: yesAgriculture, 2023
A new satellite-enabled interoperable service has been developed to provide high spatiotemporal and continuous time series of Growing Degree Days (GDDs) at the field. The GDDs are calculated from MSG-SEVIRI data acquired by the EUMETCast station operated
Iphigenia Keramitsoglou   +7 more
doaj   +1 more source

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