Thermal imaging of soybean response to drought stress: the effect of Ascophyllum nodosum seaweed extract

Martynenko, Alex; Shotton, Katy; Astatkie, Tess; Petrash, Gerry; Fowler, Christopher; Neily, Will; Critchley, Alan T.

doi:10.1186/s40064-016-3019-2

Cited by 100 publications

(45 citation statements)

References 35 publications

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“…Hence, indices obtained from this spectra range can be used as a proxy to assess stomata dynamics that regulates transpiration rate of plants. Therefore, the later indices can be used as indicator of plant water status [17][18][19] and abiotic/biotic stress levels [20,21].…”

Section: Remote Sensing and Vegetation Indicesmentioning

confidence: 99%

Significant Remote Sensing Vegetation Indices: A Review of Developments and Applications

2017

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Vegetation Indices (VIs) obtained from remote sensing based canopies are quite simple and effective algorithms for quantitative and qualitative evaluations of vegetation cover, vigor, and growth dynamics, among other applications. These indices have been widely implemented within RS applications using different airborne and satellite platforms with recent advances using Unmanned Aerial Vehicles (UAV). Up to date, there is no unified mathematical expression that defines all VIs due to the complexity of different light spectra combinations, instrumentation, platforms, and resolutions used. Therefore, customized algorithms have been developed and tested against a variety of applications according to specific mathematical expressions that combine visible light radiation, mainly green spectra region, from vegetation, and nonvisible spectra to obtain proxy quantifications of the vegetation surface. In the real-world applications, optimization VIs are usually tailored to the specific application requirements coupled with appropriate validation tools and methodologies in the ground. The present study introduces the spectral characteristics of vegetation and summarizes the development of VIs and the advantages and disadvantages from different indices developed. This paper reviews more than 100 VIs, discussing their specific applicability and representativeness according to the vegetation of interest, environment, and implementation precision. Predictably, research, and development of VIs, which are based on hyperspectral and UAV platforms, would have a wide applicability in different areas.

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Section: Remote Sensing and Vegetation Indicesmentioning

confidence: 99%

Significant Remote Sensing Vegetation Indices: A Review of Developments and Applications

2017

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“…In numerous agrarian areas, restriction underway is principal because of poor water system timing and deficient utilization of water; accordingly, the water system is basic to take care of harvest water demand. As the plant goes into water pressure condition, their stomata start to close making the crop water stress to rise [10]. In [11] demonstration of the outcomes acquired with a low-cost UAV system for farming, applications are done.…”

Section: Irrigation Scheduling Using Thermal Imagingmentioning

confidence: 99%

Thermal Imaging Techniques in Agricultural Applications

N*¹,

Biradar²,

J³

2019

IJITEE

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Thermal imaging innovation has transformed into an important technique in all fields as a result of its non-ruinous, non-contact method to choose thermal properties and highlights of any object/zone of interest. It is a procedure of improving the permeability of objects in a dark environment by detecting the objects infrared radiation and shaping an image based on that obtained data. This method will be useful in all fields where temperature difference helps in analyzing the area/object. The potential use of this technique in the agricultural field includes irrigation scheduling, soil properties mapping, plant disease detection, crop yield estimation, evaluating the maturity of the crop, etc. This paper briefly reviews some of the works on thermal imaging for agricultural applications

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“…A aplicação de produtos à base do extrato da alga Ascophyllum nodosum tem proporcionado resultados positivos no aumento da produtividade em tomate (KOYAMA et al, 2012), produção e qualidade de uva sob condição de solo alcalino (SABIR et al, 2014), indução de resistência ao déficit hídrico em soja (MARTYNENKO et al, 2016) 1,12; 1,5 e 1,87 mL planta -1 , equivalentes respectivamente a 0; 0,08; 0,11; 0,15; 0,19 mL planta -1 do extrato de alga. O produto foi diluído em água nas seguintes dosagens 0; 2,5; 3,7; 5,0 e 6,2 mL L -1 .…”

Section: Introductionunclassified

Bioestimulante Na Produção De Mudas De Videira Cv. Crimson Seedless

Ribeiro

Lobo

Cavalcante

et al. 2017

RSA

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Resumo -A produção de mudas com qualidade é fundamental na exploração das culturas agrícolas, e os bioestimulantes apresentam-se como ferramentas benéficas nessa fase da planta. O estudo objetivou avaliar as diferentes concentrações de bioestimulante composto por extrato de algas, no favorecimento da expansão radicular e desenvolvimento vegetativo inicial de mudas de uva, cultivar Crimson Seedless enxertadas em porta-enxerto SO4. O experimento foi realizado em viveiro comercial na cidade de Petrolina-PE. O delineamento experimental utilizado foi o inteiramente casualizado, com cinco tratamentos e quatro repetições. Os tratamentos foram: (T1) 0; (T2) 0,75; (T3) 1,12; (T4) 1,5 e (T5) 1,87 mL planta -1 do bioestimulante. Aos 45 dias após a enxertia foram analisados o comprimento e diâmetro da brotação do enxerto; área foliar; diâmetro, densidade, área, comprimento e matéria seca das raízes e matéria seca da parte aérea. Os dados foram submetidos à análise de variância e análise de regressão polinomial. Os melhores resultados foram proporcionados pela aplicação da dose 0,75 mL planta -1 . O aumento da dose causou redução na expressão das variáveis. Conclui-se que o bioestimulante é uma ferramenta importante na produção de mudas com qualidade. Palavras-Chave -Vitis vinifera, Ascophyllum nodosum, propagação vegetativa, reguladores vegetais.Abstract -The seedling production with quality is essential for growing agricultural crops, and the biostimulants are beneficial tools for this plant phase. The study aimed to evaluate the different concentrations of biostimulant containing algae extract on root expansion and initial vegetative development of grape seedlings cv. Crimson Seedless grafted on SO4 rootstock. The experiment was conducted in commercial nursery in Petrolina county, Pernambuco state, Brazil. The experimental design used was the completely randomized design, with five treatments and four replicates. The treatments were: (T1) 0; (T2) 0.75; (T3) 1.12; (T4) 1.5 and (T5) 1.87 mL plant -1 of the biostimulant. At 45 days after grafting the length and diameter of the graft sprouting; leaf area; diameter, density, area, length, and dry weight of roots and shoots were analyzed. The data were subjected to analysis of variance and polynomial regression. The best results were provided by 0.75 mL plant -1 biostimulant dose. Increasing biostimulant doses caused the reduction of variables expression. It is concluded that the biostimulant is an important tool for production of quality grape seedlings.

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Thermal imaging of soybean response to drought stress: the effect of Ascophyllum nodosum seaweed extract

Cited by 100 publications

References 35 publications

Significant Remote Sensing Vegetation Indices: A Review of Developments and Applications

Significant Remote Sensing Vegetation Indices: A Review of Developments and Applications

Thermal Imaging Techniques in Agricultural Applications

Bioestimulante Na Produção De Mudas De Videira Cv. Crimson Seedless

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