Spatial correlation between the chlorophyll index and foliar npk levels in coffee crop
Detection of spatial variability of data that can improve crop management is a key factor for precision agriculture. In agriculture, there is a need for tools to assist farmers in decision-making about proper nutrient management, aiming to achieve their full productive potential. Based on that, this study aimed to (1) determine the spatial correlations between the chlorophyll index (CI) and the foliar levels of nitrogen, phosphorus and potassium (NPK) in the coffee crop using geostatistical tools; and (2) to evaluate the potential use of this index as a tool for site-specific nutrient management in an irrigated coffee field. For that, a study was carried out in a 2.1 ha area under arabica coffee cultivation in Paula Cândido, Minas Gerais State, Brazil. Samplings of the CI were performed in 1141 plants using a portable chlorophyll meter (SPAD-502). Regarding the NPK analysis, leaf samples from one of each 10 plants used to measure the CI were taken for chemical analysis (114 plants). Then, the data were submitted to descriptive and geostatistical analysis. For the spatial correlation analysis, the Moran Bivariate Global (I) and the Local index (Ixy) were used. The results showed a moderate correlation between the CI and N (0.500), showing the potential of the chlorophyll meter as a tool for site-specific nitrogen management in the coffee crop. Differently, the CI is not recommended for P and K management since they were not well correlated. Lastly, as a tool that performs indirect measurements, the results from the chlorophyll meter should be validated by field measurements to local calibrations.
Main Authors: | , , , , |
---|---|
Format: | Article biblioteca |
Language: | English |
Published: |
Editora UFLA
2020
|
Subjects: | AGRICULTURAL SCIENCES AND BIOTECHNOLOGY, Optical Sensors, SENSORS, PRECISION AGRICULTURE, CARTOGRAPHY, GEOSTATISTICS, COFFEA ARABICA, |
Online Access: | https://hdl.handle.net/10883/21632 |
Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
id |
dig-cimmyt-10883-21632 |
---|---|
record_format |
koha |
spelling |
dig-cimmyt-10883-216322021-08-30T14:44:17Z Spatial correlation between the chlorophyll index and foliar npk levels in coffee crop Zanella, M.A. Rodrigues, F. Dos Santos Sousa, E.D.T. Nogueira Martins, R. Calijuri, M.L. AGRICULTURAL SCIENCES AND BIOTECHNOLOGY Optical Sensors SENSORS PRECISION AGRICULTURE CARTOGRAPHY GEOSTATISTICS COFFEA ARABICA Detection of spatial variability of data that can improve crop management is a key factor for precision agriculture. In agriculture, there is a need for tools to assist farmers in decision-making about proper nutrient management, aiming to achieve their full productive potential. Based on that, this study aimed to (1) determine the spatial correlations between the chlorophyll index (CI) and the foliar levels of nitrogen, phosphorus and potassium (NPK) in the coffee crop using geostatistical tools; and (2) to evaluate the potential use of this index as a tool for site-specific nutrient management in an irrigated coffee field. For that, a study was carried out in a 2.1 ha area under arabica coffee cultivation in Paula Cândido, Minas Gerais State, Brazil. Samplings of the CI were performed in 1141 plants using a portable chlorophyll meter (SPAD-502). Regarding the NPK analysis, leaf samples from one of each 10 plants used to measure the CI were taken for chemical analysis (114 plants). Then, the data were submitted to descriptive and geostatistical analysis. For the spatial correlation analysis, the Moran Bivariate Global (I) and the Local index (Ixy) were used. The results showed a moderate correlation between the CI and N (0.500), showing the potential of the chlorophyll meter as a tool for site-specific nitrogen management in the coffee crop. Differently, the CI is not recommended for P and K management since they were not well correlated. Lastly, as a tool that performs indirect measurements, the results from the chlorophyll meter should be validated by field measurements to local calibrations. 2021-08-27T00:25:17Z 2021-08-27T00:25:17Z 2020 Article Published Version https://hdl.handle.net/10883/21632 10.25186/.v15i.1765 English CIMMYT manages Intellectual Assets as International Public Goods. The user is free to download, print, store and share this work. In case you want to translate or create any other derivative work and share or distribute such translation/derivative work, please contact CIMMYT-Knowledge-Center@cgiar.org indicating the work you want to use and the kind of use you intend; CIMMYT will contact you with the suitable license for that purpose Open Access Brazil Editora UFLA 15 1984-3909 Coffee Science e151765 |
institution |
CIMMYT |
collection |
DSpace |
country |
México |
countrycode |
MX |
component |
Bibliográfico |
access |
En linea |
databasecode |
dig-cimmyt |
tag |
biblioteca |
region |
America del Norte |
libraryname |
CIMMYT Library |
language |
English |
topic |
AGRICULTURAL SCIENCES AND BIOTECHNOLOGY Optical Sensors SENSORS PRECISION AGRICULTURE CARTOGRAPHY GEOSTATISTICS COFFEA ARABICA AGRICULTURAL SCIENCES AND BIOTECHNOLOGY Optical Sensors SENSORS PRECISION AGRICULTURE CARTOGRAPHY GEOSTATISTICS COFFEA ARABICA |
spellingShingle |
AGRICULTURAL SCIENCES AND BIOTECHNOLOGY Optical Sensors SENSORS PRECISION AGRICULTURE CARTOGRAPHY GEOSTATISTICS COFFEA ARABICA AGRICULTURAL SCIENCES AND BIOTECHNOLOGY Optical Sensors SENSORS PRECISION AGRICULTURE CARTOGRAPHY GEOSTATISTICS COFFEA ARABICA Zanella, M.A. Rodrigues, F. Dos Santos Sousa, E.D.T. Nogueira Martins, R. Calijuri, M.L. Spatial correlation between the chlorophyll index and foliar npk levels in coffee crop |
description |
Detection of spatial variability of data that can improve crop management is a key factor for precision agriculture. In agriculture, there is a need for tools to assist farmers in decision-making about proper nutrient management, aiming to achieve their full productive potential. Based on that, this study aimed to (1) determine the spatial correlations between the chlorophyll index (CI) and the foliar levels of nitrogen, phosphorus and potassium (NPK) in the coffee crop using geostatistical tools; and (2) to evaluate the potential use of this index as a tool for site-specific nutrient management in an irrigated coffee field. For that, a study was carried out in a 2.1 ha area under arabica coffee cultivation in Paula Cândido, Minas Gerais State, Brazil. Samplings of the CI were performed in 1141 plants using a portable chlorophyll meter (SPAD-502). Regarding the NPK analysis, leaf samples from one of each 10 plants used to measure the CI were taken for chemical analysis (114 plants). Then, the data were submitted to descriptive and geostatistical analysis. For the spatial correlation analysis, the Moran Bivariate Global (I) and the Local index (Ixy) were used. The results showed a moderate correlation between the CI and N (0.500), showing the potential of the chlorophyll meter as a tool for site-specific nitrogen management in the coffee crop. Differently, the CI is not recommended for P and K management since they were not well correlated. Lastly, as a tool that performs indirect measurements, the results from the chlorophyll meter should be validated by field measurements to local calibrations. |
format |
Article |
topic_facet |
AGRICULTURAL SCIENCES AND BIOTECHNOLOGY Optical Sensors SENSORS PRECISION AGRICULTURE CARTOGRAPHY GEOSTATISTICS COFFEA ARABICA |
author |
Zanella, M.A. Rodrigues, F. Dos Santos Sousa, E.D.T. Nogueira Martins, R. Calijuri, M.L. |
author_facet |
Zanella, M.A. Rodrigues, F. Dos Santos Sousa, E.D.T. Nogueira Martins, R. Calijuri, M.L. |
author_sort |
Zanella, M.A. |
title |
Spatial correlation between the chlorophyll index and foliar npk levels in coffee crop |
title_short |
Spatial correlation between the chlorophyll index and foliar npk levels in coffee crop |
title_full |
Spatial correlation between the chlorophyll index and foliar npk levels in coffee crop |
title_fullStr |
Spatial correlation between the chlorophyll index and foliar npk levels in coffee crop |
title_full_unstemmed |
Spatial correlation between the chlorophyll index and foliar npk levels in coffee crop |
title_sort |
spatial correlation between the chlorophyll index and foliar npk levels in coffee crop |
publisher |
Editora UFLA |
publishDate |
2020 |
url |
https://hdl.handle.net/10883/21632 |
work_keys_str_mv |
AT zanellama spatialcorrelationbetweenthechlorophyllindexandfoliarnpklevelsincoffeecrop AT rodriguesf spatialcorrelationbetweenthechlorophyllindexandfoliarnpklevelsincoffeecrop AT dossantossousaedt spatialcorrelationbetweenthechlorophyllindexandfoliarnpklevelsincoffeecrop AT nogueiramartinsr spatialcorrelationbetweenthechlorophyllindexandfoliarnpklevelsincoffeecrop AT calijuriml spatialcorrelationbetweenthechlorophyllindexandfoliarnpklevelsincoffeecrop |
_version_ |
1756087010780512256 |