Results 81 to 90 of about 69,262 (347)

Seed production, infestation, and viability in Acacia tortilis (synonym: Vachellia tortilis) and Acacia robusta (synonym: Vachellia robusta) across the Serengeti rainfall gradient [PDF]

, 2017
Tree recruitment in savannas proceeds in multiple stages characterized by successive filters occurring at the seed and seedling stages. The “demographic bottleneck” hypothesis suggests that such filters ultimately restrict tree density and prevent trees ...
Anderson, T. Michael, Holdo, Ricardo M., Morrison, Thomas, Rugemalila, Deusdedith M.   +3 more
core   +1 more source

Combined effects of prohexadione‐calcium and growing environment on sweet cherry fruit quality and postharvest performance

Journal of the Science of Food and Agriculture, EarlyView.
Abstract BACKGROUND Sweet cherry (Prunus avium L.) is a high‐value fruit crop, but its commercial success is often limited by poor pigmentation, reduced firmness, and short shelf life. This study evaluated the effects of preharvest applications of prohexadione‐calcium (1.5 L ha−1) on fruit quality and storage performance in lowland and hilly orchards ...
Alice Varaldo, Alessandra Dacomo, Dario Donno, Giovanna Giacalone   +3 more
wiley   +1 more source

Regional analysis of crop and natural vegetation in West Africa based on NDVI metrics [PDF]

, 2014
In West Africa, rainfall variability dynamics are often considered as the major driver of vegetation production. Land use shifts have also to be taken into account when analyzing changes in vegetation production.
Bégué, Agnès, Leroux, Louise, Lo Seen, Danny   +2 more
core  

Climate, vegetation phenology and forest fires in Siberia [PDF]

2007 IEEE International Geoscience and Remote Sensing Symposium, 2007
A time series of 18 years of fAPAR (fraction of photosynthetically active radiation absorbed by the green parts of vegetation) data from the NOAA AVHRR instrument series was analyzed for interannual variations in the start, peak, end and length of the season of vegetation photosynthetic activity in Central and East Siberia.
Balzter, H, Gerard, F, Weedon, G, Grey, W, Los, S, Combal, B, Bartholomé, E, Bartalev, S   +7 more
openaire   +4 more sources

Contrasting CO2‐response strategies in Pardina lentils: Yield maximization in a commercial cultivar and seed composition adjustment in a landrace

Journal of the Science of Food and Agriculture, EarlyView.
Abstract BACKGROUND Assessing crop's responses to elevated carbon dioxide (eCO2) is crucial for global food security. This study examines the impact of eCO2 (700 μmol mol−1) on the cultivars of lentil (Lens culinaris), local Pardina Verde Rayada lentil (PVRL), and commercial Pardina lentil (PL) in terms of the productivity and nutritional composition ...
Mohammad Abdullah, Idoia Garmendia, Cristina Mallor, Nieves Goicoechea, Johann Martínez‐Lüscher   +4 more
wiley   +1 more source

Effects of deficit irrigation and biostimulants on melon productivity and quality in semi‐arid conditions

Journal of the Science of Food and Agriculture, EarlyView.
Abstract BACKGROUND Water scarcity and soil salinization are major constraints to irrigated agriculture in semi‐arid regions, affecting crop productivity and fruit quality. Combining deficit irrigation with biostimulant application has emerged as a promising strategy to improve water use efficiency and plant stress tolerance.
Jefferson dos Santos Gomes Calaça, Jean Carlos Nogueira, José Raliuson Inácio Silva, Denizard Oresca, Alan Cezar Bezerra, Raquele Mendes de Lira, George do Nascimento Araújo Júnior, Luiz Guilherme Medeiros Pessoa, Agda Raiany Mota dos Santos, Sidney Antônio da Silva, Guilherme Heverton Lima e Silva, Douglas Nogueira Lima, Eduardo Soares de Souza   +12 more
wiley   +1 more source

The application of time-series MODIS NDVI profiles for the acquisition of crop information across Afghanistan [PDF]

, 2014
We investigated and developed a prototype crop information system integrating 250 m Moderate Resolution Imaging Spectroradiometer (MODIS) normalized difference vegetation index (NDVI) data with other available remotely sensed imagery, field data, and ...
Juniper, Graham R., Simms, Daniel M., Taylor, John C., Waine, Toby W.   +3 more
core   +1 more source

Exploring Vegetation Phenology At Continental Scales: Linking Temperature-Based Indices And Land Surface Phenological Metrics

, 2017
Phenology is thes cience that studies the timings of recurring biological events such as leafing and blooming as well as their causes and variations in space and time. Spatially explicit environmental datasets and are key to understand phenological dynamics at continental to global scales.
Zurita-Milla, R., Goncalves, R., Izquierdo-Verdiguier, E., Ostermann, F.O.   +3 more
openaire   +2 more sources

Improving vegetation phenological parameterization of a land surface model [PDF]

, 2016
Abstract. The growing degree day (GDD) model and the growing season index (GSI) model are two common approaches used in various land surface models (LSMs) for simulating phenophases. The capacity of these two models for simulating phenolphases was evaluated by coupling them to a LSM (DLM: Dynamic Land Model) and validated by observation data from the ...
Baozhang Chen, M. Che
openaire   +2 more sources

Comparing autumn duck use of intensely managed wetlands in Michigan using a novel approach

The Journal of Wildlife Management, EarlyView.
Camera traps, a relatively novel method for assessing waterfowl use of wetlands, show ducks in southeastern Michigan are influenced by hunting disturbance, vegetation type, season progression, and diel period. Abstract Socioeconomic value derived from duck hunting has contributed to autumn habitat use becoming a particular focus for the natural ...
Trey McClinton, David R. Luukkonen, Daniel B. Hayes   +2 more
wiley   +1 more source