Home > IV Asian Horticultural Congress – AHC2023 > Spectrum radiometric approach: a non-destructive method for measuring the canopy light interception rate in crops

Articles

Spectrum radiometric approach: a non-destructive method for measuring the canopy light interception rate in crops

Article number

1404_35

Pages

253 – 258

Language

English

Abstract

The measurement of photosynthesis in a plant canopy is crucial in agricultural crop production as it can help estimate the potential yield of the land, determine the suitability of the land area for cultivation, consider environmental factors associated with cultivation, and predict crop yield.
The dry matter production or amount of photosynthesis in a canopy can be estimated by multiplying the amount of light energy received by the canopy by a constant, light use efficiency, which converts light energy into dry matter.
The energy received by the canopy can be calculated by multiplying the total solar radiation per unit area by the light interception rate.
Crops with low plant height and uniform plant density typically have similar rates of light interception and plant coverage.
However, for crops such as fruits vegetables, measuring the light interception rate can be challenging owing to their nonuniform planting density, which necessitates the use of the leaf area index (LAI) and light extinction coefficient in calculations.
Unfortunately, measuring the LAI is time-consuming and labor-intensive, making it challenging to conduct at actual production sites.
To address this issue, we developed a simple and non-destructive method using a spectrum radiometric approach to directly measure the light interception rate in crops.
Specifically, we focused on asparagus, for which there is no established method for measuring leaf area or the LAI. Our method is based on expressing the light interception rate as a function of near-infrared radiation (NIR) and photosynthetically available radiation (PAR) and could be applied to crops other than asparagus, providing a promising and straightforward approach for assessing the light interception rate.

Publication

IV Asian Horticultural Congress – AHC2023

Authors

Y. Iwasaki, A. Tamura

Keywords

asparagus, extinction coefficient, LAI, light use efficiency, photosynthesis

Full text

https://doi.org/10.17660/ActaHortic.2024.1404.35

Groups involved

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T. Kuroyanagi | H. Yoshikoshi | M. Hikawa-Endo

183. Glycine betaine material affects the growth and yield of asparagus in the long-term harvest production system in a semi-forcing culture

F. Satake | K. Okada | Y. Yoshida | W. Sakata | S. Motoki

184. Mounding increases the rate of thick spears of asparagus

K. Suzuki | Y. Ayabe | A. Kato | S. Motoki

185. Investigation of nutrient solution management in hydroponics using organic fertilizer

T. Endoh | M. Takagaki | P. Suwitchyanon | C. Chaturong

186. Effect of different cultivation methods and environments on the growth and yield of Shimonita-Negi

M. Okabe | K. Obokata | T. Hirose | Y. Hashida

187. Predicting corn salad (Valerianella spp.) weight in a plant factory with artificial lighting (PFAL) using K-Nearest Neighbors algorithm (KNN)

S. Dhammayorddee | C. Chanseetis | A. Kato | M. Takagaki | N. Lookin

188. The effect of water and fertilizer types on growth and yield of supan-supan (Neptunia oleracea) cultivated on flooded Ultisol media

H. Susanti | J. Purnomo | O.A. Kumadawara

189. Effect of low sunlight and high temperature during flower bud differentiation on the cut flower quality of carnation ‘Cherry Tessino’

S. Kamachi | R. Sakai | S. Nagashima | S. Mori

190. Deficit irrigation and fertilizer rates affecting growth, flower quality and physiological changes in tuberous begonia grown in plant factory

C. Inkham | K. Panjama | S. Ruamrungsri

191. Growth and flowering characteristics of Calendula under different light spectra in a controlled environment

M. Munyanont | N. Lu | T. Joilek | D.F. Rachma | M. Takagaki

192. Selection of optimal marigold (Tagetes patula) cultivar as an edible flower in a plant factory

N.Y. Kwak | B.H. Sung | K.P.S. Kumaratenna | Y.Y. Cho

193. Promoting flower yields, photosynthetic pigments and some secondary metabolite in Marguerite daisy (Chrysanthemum frutescens L.) cut flower under the smart farming system by pinching technique

Y. Luekhampa | C. Seelatlao | W. Chareontham | J. Sanitchon | P. Hongpakdee

194. Nutrient deficiencies affect growth and development of vinca

S. Ruamrungsri | C. Inkham | K. Panjama

195. Relationship between Asian ginseng decline and soil chemical property

Md.A.A. Mahmud | Y. Matsubara | T. Ikezawa

196. Influence of different flower vases on the impression of cut flowers

Y. Mitarai

197. Effects of different LED light spectrum on growth and cannabinoid contents of Cannabis sativa L. hybrid ‘KKU’ cultivars under an indoor pot cultivation

P. Nounbunma | P. Hongpakdee | J. Paluka | C. Lapjit

198. Effects of cultivation environmental factors on the growth of the edible cactus (Nopalea cochenillifera) grown under hydroponic conditions

S. Tsuchimoto | K. Okada | K. Kondo | T. Horibe

199. Calcium and magnesium biofortification of the edible cactus Nopalea cochenillifera grown under hydroponic conditions

E. Nishimura | K. Hayashi | T. Horibe

200. Effect of selling area, period, and type on the price of okra (Abelmoschus esculentus L.) in Japan

L. Sato | N. Miyamoto | S. Motoki

201. Comparative analysis of asparagus marketing practices in Europe, North America, and Asia during summer and autumn

S. Yamashita | S. Motoki

202. Edible alleys in the discourse of urban horticulture: a case study on densely built urban renewal districts in Chiayi, Taiwan

T.I. Lee

203. Application of calcium chloride on yield and quality of Capsicum annuum L.

N. Montri | S. Sengseng | R. Deewatthanawong | K. Bunya-atichart

204. Development of a growth state estimation system using a moving camera in strawberry cultivation

S. Matsuo | H. Umeda

205. The impact of adding nanoparticles to the media to speed up the in vitro multiplication stage of banana explants

P. Nugrahani | I.R. Moeljani