Calibration of a prototype for continuous measurements of photosynthetically active radiation in sorghum

Authors

  • Gilbert Fresh López López Universidad Autónoma Agraria Antonio Narro-Departamento de Maquinaria Agrícola. Calzada Antonio Narro núm. 1923, Buenavista, Saltillo, Coahuila, México. CP. 25315
  • Diego Cruz Hernandez Postgrado en Ingeniería de Sistemas de Producción-Departamento de Maquinaria Agrícola-Universidad Autónoma Agraria Antonio Narro. Calzada Antonio Narro núm. 1923, Buenavista, Saltillo, Coahuila, México. CP. 25315.
  • Pedro Andrade Sanchez Universidad de Arizona-Departamento de Ingeniería Agrícola y de Biosistemas. Tucson, Arizona
  • Santos Gabriel Campos Magaña Universidad Autónoma Agraria Antonio Narro-Departamento de Maquinaria Agrícola. Calzada Antonio Narro núm. 1923, Buenavista, Saltillo, Coahuila, México. CP. 25315
  • Martin Cadena Zapata Universidad Autónoma Agraria Antonio Narro-Departamento de Maquinaria Agrícola. Calzada Antonio Narro núm. 1923, Buenavista, Saltillo, Coahuila, México. CP. 25315
  • Juan Antonio López López Universidad Autónoma Agraria Antonio Narro-Departamento de Maquinaria Agrícola. Calzada Antonio Narro núm. 1923, Buenavista, Saltillo, Coahuila, México. CP. 25315

DOI:

https://doi.org/10.29312/remexca.v0i26.2947

Keywords:

calibration equation, PAR prototype, precision agriculture

Abstract

This research aimed to calibrate the operation of a prototype for continuous measuring of photosynthetically active radiation (PAR) and validate it with field tests in sorghum cultivation (Sorghum spp.) at the final stage of its development. The prototype developed is based on two probes with 80 sensors (photodiodes). For calibration purposes, the output of this prototype was compared with a commercial sensor AccuPAR model LP-80 PAR/LAI Ceptometer (Decagon Enterprise), this calibration is explained by the slope of a linear regression model. The results obtained were a slope of 6.22963 μ mol m-2s-1 (mV x 102)-1 with a coefficient of determination of 0.997, which met the statistical assumptions at 95%. In addition, the map of variability in the field is presented, whose values range from ≤ 794.4 to 2 160 μ mol m-2 s-1, with the lower limit indicating that there is more foliage and the upper limit less foliage. From the data generated by the prototype, similarities to the commercial sensor were observed, suggesting that the prototype collects the data in less time and with greater sampling coverage, taking advantage of the window of opportunity of the diurnal solar radiation cycle.

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Published

2021-07-07

How to Cite

López López, Gilbert Fresh, Diego Cruz Hernandez, Pedro Andrade Sanchez, Santos Gabriel Campos Magaña, Martin Cadena Zapata, and Juan Antonio López López. 2021. “Calibration of a Prototype for Continuous Measurements of Photosynthetically Active Radiation in Sorghum”. Revista Mexicana De Ciencias Agrícolas, no. 26 (July). México, ME:171-78. https://doi.org/10.29312/remexca.v0i26.2947.

Issue

No. 26 (2021): Especial

Section

Articles

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