Results 31 to 40 of about 16,351 (250)

Non-destructive determination of photosynthetic pigments in the leaves of castor oil plants=Determinação não destrutiva de pigmentos da fotossíntese em folhas de mamoneira [PDF]

Acta Scientiarum. Agronomy, 2012
The aim of the present work was to determine the relationship between photosynthetic pigments extracted in dimethyl sulfoxide (DMSO) and readings obtained by the portable chlorophyll meter, ClorofiLOG® 1030, to generate mathematical models that are able ...
Fabíola Vanessa de França, Valdinei Sofiatti, Napoleão de Esberard Macêdo Beltrão, José Félix de Brito Neto, Silvia Capuani, João Paulo Gonsiorkiewicz Rigon   +5 more
doaj   +1 more source

Evaluation of a portable chlorophyll meter to estimate chlorophyll concentrations in leaves of tropical wood species from Amazonian forest

Hoehnea
A portable chlorophyll meter can be an important tool to estimating chlorophyll contents in leaves of tree species under field conditions. The method is quick and non-destructive compared to the classic chemical methods of pigment extraction.
José Francisco de Carvalho Gonçalves, Ulysses Moreira dos Santos Junior, Emerson Alves da Silva   +2 more
doaj   +1 more source

Prediction of leaf N in centipedegrass by a chlorophyll meter

African Journal of Agricultural Research, 2015
The persistence of color response to fertilizer treatments is an important criterion of turfgrass performance. Centipedegrass (Eremochloa ophiuroides (Munro) Hack.) is widely used throughout sub-tropical region, and was selectedas the subject of this study. Four N treatments were applied, with NH4NO3monthly atan application rate of 0, 2.5(1.4), 5.0(2.8)
Chang Yu Sen, Chung Yu Shian, Kuo Yu Jen
openaire   +2 more sources

Production and nutrition of irrigated Tanzania guinea grass in response to nitrogen fertilization

Revista Brasileira de Zootecnia, 2014
The objective of this study was to evaluate the effects of nitrogen (N) fertilization in the four seasons of the year on forage production, nitrate (NO3) in the sap, total N in the forage and relative chlorophyll index (SPAD reading) in the leaves of ...
Maria Celuta Machado Viana, Inêz Pereira da Silva, Francisco Morel Freire, Mozart Martins Ferreira, Édio Luiz da Costa, Maria Helena Tabim Mascarenhas, Matheus Ferreira França Teixeira   +6 more
doaj   +1 more source

Wearable OLED‐Assisted Photodynamic Cancer Therapy Using Chlorin e6‐Loaded Pluronic Nanocapsules as Photosensitizers

Advanced Healthcare Materials, EarlyView.
A novel photodynamic therapeutic approach has been employed for anticancer therapy, utilizing chlorin e6‐loaded Pluronic nanocapsules and a wearable organic light‐emitting diode light source. This has shown significant in vivo antitumor efficacy with minimal off‐target toxicity. The innovative combination of a wearable light source and photosensitizers
Hyeryeon Oh, Seung Min Jeong, Cheol Hui Park, Panmo Son, Yeseo Lee, Heebeom Koo, Won Il Choi, Kyung Cheol Choi   +7 more
wiley   +1 more source

Portable chlorophyll meter in monitoring and management of nitrogen in common bean cultivars

Revista de la Facultad de Ciencias Agrarias, 2020
More sustainable practices involving biological nitrogen fixation (BNF) and the use of portable chlorophyll meter in fertilization management are promising to increase nitrogen (N) use efficiency in the common bean crop.
Vinicius Augusto Filla, Anderson Prates Coelho, Fábio Tiraboschi Leal, João Víctor Trombeta Bettiol, Leandro Borges Lemos   +4 more
doaj  

Quantificação de clorofilas em folhas de macieiras 'Royal Gala' e 'Fuji' com métodos ópticos não-destrutivos Quantification of chlorophylls in leaves of 'Royal Gala' and 'Fuji' apple trees with non-destructive optical methods

Revista Brasileira de Fruticultura, 2008
O método-padrão para a quantificação de clorofilas em folhas é destrutivo e relativamente demorado. Com o advento dos medidores portáteis, a quantificação de clorofilas tornou-se fácil e rápida, podendo ser realizada de forma não-destrutiva a campo ...
Cassandro Vidal Talamini do Amarante, Cristiano André Steffens, Odimar Zanuzo Zanardi, Erlani de Oliveira Alves   +3 more
doaj   +1 more source

Ratiometric Mycotoxin Detection in Living Plants With Dual‐Emissive Nanosensors

Advanced Materials, EarlyView.
A minimally invasive microneedle patch integrates carbon dot‐embedded metal–organic frameworks as nanosensors to detect a key fungal toxin in living plants. The nanosensor produces a ratiometric fluorescence signal that enables early, non‐destructive diagnosis of fungal infection before visible symptoms, offering a new biomaterials‐based strategy for ...
Yuliang Li, Di Shen, Ziyang Huang, Suppanat Puangpathumanond, Calvin Thenarianto, Yue Zhao, Jolly Madathiparambil Saju, Rajani Sarojam, Dongmei Zhou, Tedrick Thomas Salim Lew   +9 more
wiley   +1 more source

Nitrogen dynamic and precise management to predict corn yield in tropical upland acid soils [PDF]

Global Journal of Environmental Science and Management
BACKGROUND AND OBJECTIVES: To meet the needs of the global population (9.7 billion people) until 2050, a 45 percent increase in corn production is required. Efforts to enhance corn production may be informed, among others, precise N management.
A. Kasno, A.A. Rivaie, C. Tafakresnanto, E. Pratiwi, E. Karmawati, A.F. Siregar, M. Hatta, M.T. Sutriadi   +7 more
doaj   +1 more source

Electrically Coded Retinomorphic Spectrophotodetector

Advanced Materials, EarlyView.
Self‐powered retinomorphic pyro‐photodetector is demonstrated that avoids machine‐learning post‐processing and covers 365–940 nm. Electrostatic balancing of built‐in potential produces an electrical wavelength code, delivering <3 nm wavelength decoding accuracy with ∼46 µs response.
Mohit Kumar, Hyunmin Dang, Hyungtak Seo
wiley   +1 more source