The triangular greenness index indicates the weed control efficacy of stored herbicide spray mixtur
Palavras-chave:
glyphosate, dicamba, diquat, 2,4 DResumo
Herbicide spray mixture may need to be stored due to mechanical failures, adverse weather conditions, or the use of concentrated spray mixture. Remote sensing has emerged as a valuable tool for assessing pest control efficacy. This study aimed to assess the effect of prolonged storage of spray solution on weed control efficacy using remote sensing. The experiment adopted a randomized block design with four replicates, using a split-plot arrangement. The following factors were analyzed in the present study: four herbicide spray mixture (glyphosate, dicamba, diquat, and 2,4-D) in the main plot, eight storage periods (14, 12, 10, 8, 6, 4, 2, and 0 days before application) in subplots, and seven time points (1, 3, 5, 7, 9, 14, 21, and 28 days after application) in subsubplots. Data analysis involved ANOVA, assumption testing, and Pearson product-moment correlation between methods. The results indicated that stored spray mixture maintain their efficacy in weed control. In addition, the triangular greenness index effectively estimated the weed control efficacy of all herbicides studied, i.e., glyphosate, dicamba, diquat and 2,4-D.
Referências
Bales S, Sprague C. Tank contamination with dicamba and 2,4-D influences dry edible bean. Weed Technol. 2020;(34):89–95. Available from: https://doi.org/10.1017/wet.2019.92
Castner M, Norsworthy J, Barber L, Roberts T, Gbur EE. Interaction of contact herbicides and timing of dicamba exposure on soybean. Weed Technol. 2021;(34):725–32. Available from: https://doi.org/10.1017/wet.2021.37
Schortgen GP, Patton A. Weed control by 2,4-D dimethylamine depends on mixture water hardness and adjuvant inclusion but not spray solution storage time. Weed Technol. 2020;(34):107–16. Available from: https://doi.org/10.1017/wet.2019.117
Eure PM, Jordan DL, Fisher LR, York AC. Efficacy of herbicides when spray solution application is delayed. Int J Agron. 2013;2013:1–7. Available from: https://doi.org/10.1155/2013/782486
Daramola OS, Johnson WG, Jordan DL, Chahal GS, Devkota P. Spray water quality and herbicide performance: a review. Weed Technol. 2022;(36):758–67. Available from: https://doi.org/10.1017/wet.2022.97
Devkota P, Whitford F, Johnson WG. Influence of spray-solution temperature and holding duration on weed control with premixed glyphosate and dicamba formulation. Weed Technol. 2016;(30):116–22. Available from: https://doi.org/10.1614/WT-D-15-00101.1
Ramos HH, Durigan JC. Efeito do armazenamento de calda na eficácia de herbicidas aplicados em: I. pós-emergência. Planta Daninha. 1998;(16):175–85. Available from: https://doi.org/10.1590/S0100-83581998000200011
Stewart CL, Nurse RE, Cowbrough M, Sikkema PT. How long can a herbicide remain in the spray tank without losing efficacy? Crop Prot. 2009;(28):1086–90. Available from: https://doi.org/10.1016/j.cropro.2009.05.003
Harre N, Young J, Young B. Influence of 2,4-D, dicamba, and glyphosate on clethodim efficacy of volunteer glyphosate-resistant corn. Weed Technol. 2020;(34):394–401. Available from: https://doi.org/10.1017/wet.2019.124
Voll E, Adegas FS, Gazziero DLP, Brighenti AM, Oliveira MCN. Amostragem do banco de semente e flora emergente de plantas daninhas. Pesqui Agropecu Bras. 2003;(38):211–8. Available from: https://doi.org/10.1590/S0100-204X2003000200007
Lu J, Cheng D, Geng C, Zhang Z, Xiang Y, Hu T. Combining plant height, canopy coverage and vegetation index from UAV-based RGB images to estimate leaf nitrogen concentration of summer maize. Biosyst Eng. 2021;(202):42–54. Available from: https://doi.org/10.1016/j.biosystemseng.2020.11.010
Silva MH, Elias AR, Rosário L. Análise da cultura da soja a partir de índices de vegetação (ExG – GLI – TGI – VEG) advindos de imagens RGB obtidas com ARP. Rev Bras Geomática. 2022;(10):140–54. Available from: 10.3895/rbgeo.v10n2.15042
Hunt Júnior ER, Daughtry CST, Eitel JUH, Long DS. Remote sensing leaf chlorophyll content using a visible band index. Agron J. 2011;(103):1090–1099. Available from: https://doi.org/10.2134/agronj2010.0395
Köppen W. Climatologia como um estúdio de los climas de tierra. México: Fondo de Cultura Econômica; 1948.
Braun-Blanquet J. Fitossociologia: bases para el estudio de las comunidades vegetales. Madri: H. Blume; 1979.
American Society of Agricultural and Biological Engineers. ASABE. Spray nozzle classification by droplet spectra. St. Joseph: ASABE; 2020.
Sociedade Brasileira da Ciência das Plantas Daninhas. SBCPD. Procedimentos para instalação, avaliação e análise de experimentos com herbicidas. Londrina: SBCPD; 1995.
MAPIR Camera Control. MCC [Internet]. 2022 [access 2022 Nov 25]. Available from: www.mapir.camera
Agisoft LLC. Agisoft Photoscan Pro [Internet]. 2022 [access 2022 Nov 25]. Available from: www.agisoft.com
QGIS Development Team. QGIS Geographic Information System [Internet]. 2022 [access 2022 Nov 25]. Available from: qgis.osgeo.org
R Core Team. R: A language and environment for statistical computing [Internet]. 2022 [access 2022 Nov 25]. Available from: www.r-project.org
Székács A. Herbicide mode of action. In: Herbicides. p. 41–86; 2021.
Mueller T, Steckel L, Shekoofa A. Effect of 2,4-D formulation on volatility under field conditions. Weed Technol. 2022;(36):462–467. Available from: https://doi.org/10.1017/wet.2022.59
Kalina J, Corkern C, Shilling D, Basinger N, Grey T. Influence of time of day on dicamba and glyphosate efficacy. Weed Technol. 2022;(36):21–7. Available from: https://doi.org/10.1017/wet.2021.66
Devkota P, Johnson W. Efficacy of dicamba and glyphosate as influenced by carrier water pH and hardness. Weed Technol. 2020;(34):101–6. Available from: https://doi.org/10.1017/wet.2019.110
Marques MG, Cunha JPR, Lemes EM. Dicamba injury on soybean assessed visually and with spectral vegetation index. AgriEngineering. 2021;(3):240–50. Available from: https://doi.org/10.3390/agriengineering3020016
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