Results 271 to 280 of about 170,655 (310)
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Prediction of Botanical Composition Using NIRS Calibrations Developed from Botanically Pure Samples
Crop Science, 1990Point quadrat, hand separation, and histological methods for determining botanical composition are tedious, time consuming, and expensive. Near‐infrared reflectance spectroscopy (NIRS) was used as a rapid method to predict botanical composition of grass‐legume mixtures clipped from field plots. Our objective was to determine if a group of samples, each
S. W. Coleman +2 more
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Botanical composition of long-term hayfield phytocenoses
International Scientific Conference, 2021The article presents the results of studying the botanical composition of long-term hayfield phytocenoses over the past 15 years. Depending on the fertilization system, the species and group composition of herbage and the dominant species change.
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Indonesian propolis: chemical composition, biological activity and botanical origin
Natural Product Research, 2011From a biologically active extract of Indonesian propolis from East Java, 11 compounds were isolated and identified: four alk(en)ylresorcinols (obtained as an inseparable mixture) (1-4) were isolated for the first time from propolis, along with four prenylflavanones (6-9) and three cycloartane-type triterpenes (5, 10 and 11).
Boryana, Trusheva +5 more
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Yield and Botanical Composition of Alfalfa‐Bermudagrass Mixtures
Agronomy Journal, 1990AbstractThe regions of adaptation of alfalfa (Medicago sativa L.) and bermudagrass [Cynodon dactylon (L.) Pers.) overlap in the southeastern USA, but the compatibility of these species in a mixture has not been described. Two field experiments were conducted to compare the yield and botanical composition of alfalfa‐bermudagrass mixtures with each ...
R. H. Brown, G. T. Byrd
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Composition of Rubber from Different Botanical Sources
Rubber Chemistry and Technology, 1945Abstract Natural rubber from botanical sources other than Hevea brasiliensis now forms an appreciable proportion of the total rubber available to manufacturers in Allied countries. The principal source of this wild rubber is the African continent, the home of Landolphia, Funtumia and other rubber-producing vines and trees.
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TRANSFORMATION OF BOTANICAL COMPOSITION OF LAWN GRASS STANDS
Вестник Бурятской государственной сельскохозяйственной академии имени В. Р. Филиппова, 2020Представлены результаты исследования трансформации ботанического состава газонных травостоев во времени. В 2016-2018 гг. изучено 10 травосмесей, представленных в розничной сети г. Улан-Удэ. Установлено, что представленным ассортиментом травосмесей, возможно создать газонные покрытия различных типов - декоративные (партерные, луговые, обыкновенные ...
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A method of displaying differences in botanical composition
Austral Ecology, 1979A new graphical method for displaying interrelationships within data on botanical composition of communities is described. It employs plotting roses of vectors where direction indicates species and length, proportional representation. The use and advantages of the method are discussed.
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BOTANICAL FEATURES AND AMINO ACID COMPOSITION OF AFRICAN MILLET
Естественные и технические науки, 2023Объектом исследований является новая линия африканского проса селекции ФГБНУ «Северо-Кавказский ФНАЦ». Цель исследований – уточнение ботанических особенностей растений изучаемой культуры и наличие в сухом веществе кормовой массы и зерна элементов питания, а также заменимых и незаменимых аминокислот.
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Botanical Composition and Forage Production in an Emulated Silvopasture
Agronomy Journal, 2005Integrating trees into pasture may increase pasture production and improve nutritive value by altering both species composition and productivity. Our objective was to determine forage yield and botanical composition in response to tree species, tree density, and slope position in an emulated silvopasture (the site had no animals). In 1995, black walnut
Alicia L. Buergler +5 more
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DETERMINATION OF BOTANICAL COMPOSITION OF TWO-COMPONENT FORAGE MIXTURES
Canadian Journal of Plant Science, 1960A comparative study was made in 1958 of the visual estimation and hand separation methods of determining botanical composition of two-component forage mixtures. The results indicated that there were positive significant correlations between the per cent legume values obtained by the two methods.
J. W. Tanner +2 more
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