Results 51 to 60 of about 281,185 (205)

A Test of the Relationship between Sap Flow and Evapotranspiration, Normalized via Leaf Area, under Non-Limiting Soil Moisture

open access: yes, 2021
Sap flow is the movement of fluid within plants, whereas reference evapotranspiration (ETo) occurs external to plants as the transfer of water vapor from a hypothetical grass crop.
Michael A. Forster, Forster, MA
core   +1 more source

Geometrical parameter calculation of excised wheat leaves based on image analysis

open access: yes浙江大学学报. 农业与生命科学版, 2018
Aiming at some deficiency of geometrical parameter calculation in plant leaves at present, we proposed a computational method suitable for measuring area, length, width and perimeter of excised wheat leaves.
ZHANG Wanhong
doaj   +1 more source

PHOTOELECTRIC APPARATUS FOR MEASURING LEAF AREAS [PDF]

open access: yesPlant Physiology, 1935
The need to measure accurately the area of several thousand apple leaves in connection with a study of the deposit of spray residues led to a search of existing methods of leaf area measurement. The several methods described in the literature failed to satisfy the requirements, inasmuch as accuracy in area measurements was apparently to be secured only
openaire   +2 more sources

Influence of canopy development in the vineyard on spray deposition from a tunnel sprayer

open access: yesJournal of Agricultural Engineering, 2018
Spray deposition from a tunnel, air-assisted sprayer was analysed during the whole season, following canopy development in a vertical-shoot-positioned vineyard.
Gianfranco Pergher, Nicola Zucchiatti
doaj   +1 more source

Growth Analysis of Glyphosate‐Resistant and Susceptible Amaranthus palmeri Biotypes

open access: yesPlant-Environment Interactions
This study examined the growth parameters of both glyphosate‐susceptible and glyphosate‐resistant biotypes of Amaranthus palmeri, designated as GA2005 and GA2017, respectively.
Juliana deSouza Rodrigues   +7 more
doaj   +1 more source

The Value of the Stay-green Traits with Grain Yield of Post Flowering Drought Tolerance in Rabi Sorghum

open access: yesInternational Journal of Bio-Resource and Stress Management, 2021
An experiment was conducted during rabi 2012-13 at research farm of Indian Institute of Millet Research (IIMR), Rajendranagar, Hyderabad, Telengana State, India.
D. Dev Kumar   +3 more
doaj  

The Design and Implementation of the Leaf Area Index Sensor [PDF]

open access: yesSensors, 2015
The quick and accurate acquisition of crop growth parameters on a large scale is important for agricultural management and food security. The combination of photographic and wireless sensor network (WSN) techniques can be used to collect agricultural information, such as leaf area index (LAI), over long distances and in real time.
Xiuhong Li   +5 more
openaire   +3 more sources

Equilíbrio vegetativo e produtivo na qualidade da uva das variedades Merlot e Syrah em São Joaquim - SC [PDF]

open access: yes, 2012
Dissertação (mestrado) - Universidade Federal de Santa Catarina, Centro de Ciências Agrárias, Programa de Pós-Graduação em Recursos Genéticos Vegetais, Florianópolis, 2012Uma questão central no manejo do vinhedo é a relação produtividade x qualidade.
Cesconeto, Juliano Frederico da Rosa
core  

Allometric Relations in Leaves of Erythroxylum pauferrense: Endemic Species of Alto-Montana Forest in the Northeast Region, Brazil

open access: yesFloresta e Ambiente, 2020
Studies of leaf surface are important for the ecophysiological context. We tested 12 allometric equations to estimate the leaf area of the endemic species Erythroxylum pauferrense Plowman, using different morphometric measurements (n = 600). The analysis
Ana Jéssica Soares Barbosa   +2 more
doaj   +1 more source

Assessments of CO2 Assimilation on a Per-leaf-area Basis are Related to Total Leaf Area [PDF]

open access: yesJournal of the American Society for Horticultural Science, 2007
Net photosynthetic rates often are dependent on leaf size when expressed on a leaf-area basis (CO 2 assimilation as μmol·m −2 ·s −1 ).
Righetti, Timothy L.   +5 more
openaire   +2 more sources

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