Plant Growth with Artificial Sources of Radiant Energy

Alice P. Withrow; Robert B. Withrow

doi:10.1104/pp.22.4.494

A RADIANT ENERGY METER AND INTEGRATOR FOR PLANT GROWTH STUDIES

Canadian Journal of Botany ◽

10.1139/b67-225 ◽

1967 ◽

Vol 45 (11) ◽

pp. 2081-2085 ◽

Cited By ~ 8

Author(s):

E. J. Brach ◽

A. R. Mack

Keyword(s):

Plant Growth ◽

Operational Amplifier ◽

Radiant Energy ◽

Energy Meter ◽

Growth Studies ◽

Better Than

An instrument designed to indicate, record, and integrate radiant energy sensed by an Eppley thermopile is described. The output of the thermopile is amplified by a d-c. operational amplifier. The amplified output is connected to a meter or a recorder and totalized by an integrator. The output is calibrated in Ly min−1 and the sensitivity in the three recording modes is better than 0.02 Ly min−1.

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A framework for plant growth analysis and simulation using data analysis techniques

International Journal of Intelligent Unmanned Systems ◽

10.1108/ijius-08-2019-0045 ◽

2020 ◽

Vol 8 (4) ◽

pp. 281-292

Author(s):

Gayathri Mani ◽

Malathy Chidambaranathan ◽

Snehit Sagi

Keyword(s):

Plant Growth ◽

Global Economy ◽

Agricultural Sector ◽

Radiant Energy ◽

Machine Learning Algorithms ◽

Content Type ◽

Plant Environment ◽

Carbon Dioxide Levels ◽

Using Data ◽

Ph Electrodes

PurposeIn India, agriculture is considered as the major source of income for a major sector of people. Our country's GDP (Gross Domestic Product) can increase only if we focus on agriculture and its growth toward global economy. There have been several attempts to improve the agricultural sector since decades.Design/methodology/approachThis work describes about the design of a device which continuously monitors the plant growth and sends the data to a centralized database, where data is dynamically analyzed based on base references using various machine learning algorithms like regression, gradient descent, clustering etc.FindingsThis paper aims at analyzing the plant growth in of our country and focuses on the improvement of plant growth based on factors such as temperature, air moisture, radiant energy, carbon dioxide levels, soil pH& temperature through the design of a device.Originality/valueIt is anticipated to provide a solution by analyzing the plant growth percentage in different regions over a period of time. Based on the inferences, we will be able to suggest an optimum environment for the plant species to grow best. Various sensors like temperature and humidity sensors, light sensors and pH electrodes can be used in collecting data from the plant environment.

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Growth kinetics of Marquis wheat. VII. Dependence on photoperiod and light compensation point in vegetative phase

Canadian Journal of Botany ◽

10.1139/b77-078 ◽

1977 ◽

Vol 55 (6) ◽

pp. 639-643 ◽

Cited By ~ 2

Author(s):

F. D. H. Macdowall

Keyword(s):

Light Intensity ◽

Plant Growth ◽

Growth Kinetics ◽

Radiant Energy ◽

Dry Weight ◽

Compensation Point ◽

Rate Coefficients ◽

Vegetative Phase ◽

Light Compensation Point ◽

Light Intensities

The maximum rate coefficients for the vegetative phase of growth in dry weight of shoots and roots were independent of the photoperiod in plants grown at six different light intensities of 12- or24-h duration at 20 °C. The strict dependence of plant growth on only the total daily incident radiant energy was proved by the superposition of hyperbolic plots of growth coefficients obtained for five different photoperiods and for the different light intensities. Root growth was very sensitive to photoperiod at moderate light intensity. Growth kinetics changed from first to zero order in plant dry weight at a 12-h photoperiod with a light intensity of 150 ft-c (3750 ergs cm−2 s−1) depending on pretreatment. The light compensation point of plant growth occurred at16 × 107 ergs cm−2 day−1; that for shoots was lower, and that for roots was higher.

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Plant Growth Under High Radiant Energy Fluxes

Annals of Botany ◽

10.1093/oxfordjournals.aob.a085576 ◽

1978 ◽

Vol 42 (6) ◽

pp. 1305-1313 ◽

Cited By ~ 10

Author(s):

I. J. WARRINGTON ◽

E. A. EDGE ◽

L. M. GREEN

Keyword(s):

Plant Growth ◽

Radiant Energy ◽

Energy Fluxes

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Mechanisms of ethylene biosynthesis and response in plants

Essays in Biochemistry ◽

10.1042/bse0580061 ◽

2015 ◽

Vol 58 ◽

pp. 61-70 ◽

Cited By ~ 11

Author(s):

Paul B. Larsen

Keyword(s):

Plant Growth ◽

Growth And Development ◽

Ethylene Biosynthesis ◽

Unsaturated Hydrocarbon ◽

Flower Senescence ◽

Detailed Knowledge ◽

Plant Growth And Development ◽

Step Process ◽

Ethylene Response ◽

Ethylene Signalling

Ethylene is the simplest unsaturated hydrocarbon, yet it has profound effects on plant growth and development, including many agriculturally important phenomena. Analysis of the mechanisms underlying ethylene biosynthesis and signalling have resulted in the elucidation of multistep mechanisms which at first glance appear simple, but in fact represent several levels of control to tightly regulate the level of production and response. Ethylene biosynthesis represents a two-step process that is regulated at both the transcriptional and post-translational levels, thus enabling plants to control the amount of ethylene produced with regard to promotion of responses such as climacteric flower senescence and fruit ripening. Ethylene production subsequently results in activation of the ethylene response, as ethylene accumulation will trigger the ethylene signalling pathway to activate ethylene-dependent transcription for promotion of the response and for resetting the pathway. A more detailed knowledge of the mechanisms underlying biosynthesis and the ethylene response will ultimately enable new approaches to be developed for control of the initiation and progression of ethylene-dependent developmental processes, many of which are of horticultural significance.

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