Vegetation index in cotton under rates of nitrogen and growth regulator
The increasing cost of nitrogen fertilizer, combined with high losses, demand management practices that result in high efficiency of nitrogen use by crops, considering the reduction of risks to the environment. Our objectives were to evaluate the index of normalized difference vegetation – NDVI – th...
| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | English |
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Universidade Estadual de Londrina
2014-02-01
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| Series: | Semina: Ciências Agrárias |
| Subjects: | |
| Online Access: | http://www.uel.br/revistas/uel/index.php/semagrarias/editor/submission/13025 |
| _version_ | 1818347426523643904 |
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| author | Anamari Viegas de Araujo Motomiya Igor Moraes Queiroz Valente Jose Paulo Molin Jose Paulo Molin Wagner Rogério Motomiya Guilherme Augusto Biscaro Rodrigo Aparecido Jordan |
| author_facet | Anamari Viegas de Araujo Motomiya Igor Moraes Queiroz Valente Jose Paulo Molin Jose Paulo Molin Wagner Rogério Motomiya Guilherme Augusto Biscaro Rodrigo Aparecido Jordan |
| author_sort | Anamari Viegas de Araujo Motomiya |
| collection | DOAJ |
| description | The increasing cost of nitrogen fertilizer, combined with high losses, demand management practices that result in high efficiency of nitrogen use by crops, considering the reduction of risks to the environment. Our objectives were to evaluate the index of normalized difference vegetation – NDVI – the variation of nitrogen and growth regulator and its relationship to foliar N and chlorophyll in cotton crops. The experiment was conducted on Distroferric Latosol (Oxisol), in Dourados, MS. We adopted a randomized block design in split plot with four replications. The main treatments consisted of doses of growth regulator (0, 0.30 and 0.60 L ha-1), the secondary treatments consisted of five N rates (0, 30, 70, 110 and 150 kg ha-1). The NDVI obtained by an active optical sensor was influenced significantly by the N and the growth regulator application, but on most of the readings the interactions between these two factors were not significant. NDVI values can be used on the diagnostic of N nutritional deficiencies for cotton. |
| first_indexed | 2024-12-13T17:33:58Z |
| format | Article |
| id | doaj.art-675befea8cc54e02aa8355e6963ab65c |
| institution | Directory Open Access Journal |
| issn | 1676-546X 1679-0359 |
| language | English |
| last_indexed | 2024-12-13T17:33:58Z |
| publishDate | 2014-02-01 |
| publisher | Universidade Estadual de Londrina |
| record_format | Article |
| series | Semina: Ciências Agrárias |
| spelling | doaj.art-675befea8cc54e02aa8355e6963ab65c2022-12-21T23:36:59ZengUniversidade Estadual de LondrinaSemina: Ciências Agrárias1676-546X1679-03592014-02-0135116917810.5433/1679-0359.2014v35n1p169Vegetation index in cotton under rates of nitrogen and growth regulatorAnamari Viegas de Araujo Motomiya0Igor Moraes Queiroz Valente 1Jose Paulo Molin 2Jose Paulo Molin 3Wagner Rogério Motomiya4Guilherme Augusto Biscaro 5Rodrigo Aparecido Jordan6Universidade Federal da Grande DouradosUniversidade Federal da Grande DouradosUniversidade Federal da Grande DouradosUniversidade Federal da Grande DouradosUniversidade Estadual de MaringáUniversidade Federal da Grande DouradosUniversidade Federal da Grande DouradosThe increasing cost of nitrogen fertilizer, combined with high losses, demand management practices that result in high efficiency of nitrogen use by crops, considering the reduction of risks to the environment. Our objectives were to evaluate the index of normalized difference vegetation – NDVI – the variation of nitrogen and growth regulator and its relationship to foliar N and chlorophyll in cotton crops. The experiment was conducted on Distroferric Latosol (Oxisol), in Dourados, MS. We adopted a randomized block design in split plot with four replications. The main treatments consisted of doses of growth regulator (0, 0.30 and 0.60 L ha-1), the secondary treatments consisted of five N rates (0, 30, 70, 110 and 150 kg ha-1). The NDVI obtained by an active optical sensor was influenced significantly by the N and the growth regulator application, but on most of the readings the interactions between these two factors were not significant. NDVI values can be used on the diagnostic of N nutritional deficiencies for cotton.http://www.uel.br/revistas/uel/index.php/semagrarias/editor/submission/13025Precision agriculture; Fertilization management; Remote sensing |
| spellingShingle | Anamari Viegas de Araujo Motomiya Igor Moraes Queiroz Valente Jose Paulo Molin Jose Paulo Molin Wagner Rogério Motomiya Guilherme Augusto Biscaro Rodrigo Aparecido Jordan Vegetation index in cotton under rates of nitrogen and growth regulator Semina: Ciências Agrárias Precision agriculture; Fertilization management; Remote sensing |
| title | Vegetation index in cotton under rates of nitrogen and growth regulator |
| title_full | Vegetation index in cotton under rates of nitrogen and growth regulator |
| title_fullStr | Vegetation index in cotton under rates of nitrogen and growth regulator |
| title_full_unstemmed | Vegetation index in cotton under rates of nitrogen and growth regulator |
| title_short | Vegetation index in cotton under rates of nitrogen and growth regulator |
| title_sort | vegetation index in cotton under rates of nitrogen and growth regulator |
| topic | Precision agriculture; Fertilization management; Remote sensing |
| url | http://www.uel.br/revistas/uel/index.php/semagrarias/editor/submission/13025 |
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