High population density in arracacha (Arracacia xanthorrhiza Bancroft) increase radiation interception, yield, and profitability
Introduction. Arracacha (Arracacia xanthorrhiza Bancroft) a promising crop due to its nutritional and gastronomic relevance. Population density is an agronomic practice that increases water and radiation use efficiencies, maximizes the yield, and crop profitability. However, the selection of the opt...
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| Format: | Article |
| Language: | Spanish |
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Universidad de Costa Rica
2021-05-01
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| Series: | Agronomía Mesoamericana |
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| Online Access: | https://revistas.ucr.ac.cr/index.php/agromeso/article/view/43281 |
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| author | Yeison Mauricio Quevedo Amaya Jorge Enrique Villamil Carvajal Joanna Paola Garnica Montaña Omar Montenegro Ramos Eduardo Barragán Quijano |
| author_facet | Yeison Mauricio Quevedo Amaya Jorge Enrique Villamil Carvajal Joanna Paola Garnica Montaña Omar Montenegro Ramos Eduardo Barragán Quijano |
| author_sort | Yeison Mauricio Quevedo Amaya |
| collection | DOAJ |
| description | Introduction. Arracacha (Arracacia xanthorrhiza Bancroft) a promising crop due to its nutritional and gastronomic relevance. Population density is an agronomic practice that increases water and radiation use efficiencies, maximizes the yield, and crop profitability. However, the selection of the optimal population density based on physiological, agronomic, and economic criteria for arracacha has not been studied. Objective. To describe the effect of different population densities on the physiology, yield, and profitability of arracacha. Materials and methods. The experiment was conducted in Cajamarca, Colombia in 2019. There, the soil water potential, relative chlorophyll content, photosynthesis, stomatal conductance, water use efficiency, leaf temperature depression, photosynthetic reflectance index, leaf area index, the fraction of light interception, light extinction coefficient, cracking index, yield, and profitability were evaluated. Results. The results showed that high population densities did not generate water deficit because there were no significant differences for the soil water potential, leaf temperature depression, and photosynthetic reflectance index. Furthermore, no nutritional deficiencies were evidenced because the relative chlorophyll content (<32 SPAD) was higher at the critical level. Due to this, no limitations were observed in leaf gas exchange processes. However, the densities of 25,000 and 30,000 plants ha-1 showed a higher fraction of light interception due to the increase in the leaf area index; this allowed to obtain a higher yield at these densities. Conclusion. The maximum yield (41.96 t ha-1) and profitability (US$ 15,333.06 ha-1) were reached with a population density of 22,222 plants ha-1. |
| first_indexed | 2024-12-24T03:28:47Z |
| format | Article |
| id | doaj.art-961d8bc061474b32b0ff54c5bbd94b14 |
| institution | Directory Open Access Journal |
| issn | 1021-7444 2215-3608 |
| language | Spanish |
| last_indexed | 2024-12-24T03:28:47Z |
| publishDate | 2021-05-01 |
| publisher | Universidad de Costa Rica |
| record_format | Article |
| series | Agronomía Mesoamericana |
| spelling | doaj.art-961d8bc061474b32b0ff54c5bbd94b142022-12-21T17:17:16ZspaUniversidad de Costa RicaAgronomía Mesoamericana1021-74442215-36082021-05-0132210.15517/am.v32i2.43281High population density in arracacha (Arracacia xanthorrhiza Bancroft) increase radiation interception, yield, and profitabilityYeison Mauricio Quevedo Amaya0Jorge Enrique Villamil Carvajal1Joanna Paola Garnica Montaña2Omar Montenegro Ramos3Eduardo Barragán Quijano4Corporacion Colombiana de Investigacion Agropecuaria (AGROSAVIA).Corporacion Colombiana de Investigacion Agropecuaria (AGROSAVIA).Corporacion Colombiana de Investigacion Agropecuaria (AGROSAVIA).Corporacion Colombiana de Investigacion Agropecuaria (AGROSAVIA).Corporacion Colombiana de Investigacion Agropecuaria (AGROSAVIA).Introduction. Arracacha (Arracacia xanthorrhiza Bancroft) a promising crop due to its nutritional and gastronomic relevance. Population density is an agronomic practice that increases water and radiation use efficiencies, maximizes the yield, and crop profitability. However, the selection of the optimal population density based on physiological, agronomic, and economic criteria for arracacha has not been studied. Objective. To describe the effect of different population densities on the physiology, yield, and profitability of arracacha. Materials and methods. The experiment was conducted in Cajamarca, Colombia in 2019. There, the soil water potential, relative chlorophyll content, photosynthesis, stomatal conductance, water use efficiency, leaf temperature depression, photosynthetic reflectance index, leaf area index, the fraction of light interception, light extinction coefficient, cracking index, yield, and profitability were evaluated. Results. The results showed that high population densities did not generate water deficit because there were no significant differences for the soil water potential, leaf temperature depression, and photosynthetic reflectance index. Furthermore, no nutritional deficiencies were evidenced because the relative chlorophyll content (<32 SPAD) was higher at the critical level. Due to this, no limitations were observed in leaf gas exchange processes. However, the densities of 25,000 and 30,000 plants ha-1 showed a higher fraction of light interception due to the increase in the leaf area index; this allowed to obtain a higher yield at these densities. Conclusion. The maximum yield (41.96 t ha-1) and profitability (US$ 15,333.06 ha-1) were reached with a population density of 22,222 plants ha-1.https://revistas.ucr.ac.cr/index.php/agromeso/article/view/43281plant densityleaf area indexplanting systemsintraspecific competitionoptimization methods |
| spellingShingle | Yeison Mauricio Quevedo Amaya Jorge Enrique Villamil Carvajal Joanna Paola Garnica Montaña Omar Montenegro Ramos Eduardo Barragán Quijano High population density in arracacha (Arracacia xanthorrhiza Bancroft) increase radiation interception, yield, and profitability Agronomía Mesoamericana plant density leaf area index planting systems intraspecific competition optimization methods |
| title | High population density in arracacha (Arracacia xanthorrhiza Bancroft) increase radiation interception, yield, and profitability |
| title_full | High population density in arracacha (Arracacia xanthorrhiza Bancroft) increase radiation interception, yield, and profitability |
| title_fullStr | High population density in arracacha (Arracacia xanthorrhiza Bancroft) increase radiation interception, yield, and profitability |
| title_full_unstemmed | High population density in arracacha (Arracacia xanthorrhiza Bancroft) increase radiation interception, yield, and profitability |
| title_short | High population density in arracacha (Arracacia xanthorrhiza Bancroft) increase radiation interception, yield, and profitability |
| title_sort | high population density in arracacha arracacia xanthorrhiza bancroft increase radiation interception yield and profitability |
| topic | plant density leaf area index planting systems intraspecific competition optimization methods |
| url | https://revistas.ucr.ac.cr/index.php/agromeso/article/view/43281 |
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