Chromosome Numbers in Certain Species of Helianthus [PDF]
, 1931 The genus Helianthus is a comparatively large one, containing, according to Watson (13), 108 authentic and several doubtful species. These are arranged and classified by the taxonomist according to manifestations that are readily visible, but, if the ...
Geisler, Florence
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Effect of extraction conditions on antioxidant activities of Xanthium strumarium L. sprouts extracts [PDF]
E3S Web of ConferencesThis research aims to obtain the Xanthium strumarium sprouts extract with the most potent antioxidant activities. The single-factor experiments were used to extract. Factors of extraction, including temperatures (40, 50, 60, and 70°C), time (6, 8, 10, 20,
Chanakul Waraporn +2 more
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Plant Remains from an Early Iron Age Well at Hajndl, Slovenia [PDF]
, 2009 The archaeobotanical samples analysed derive from a well-preserved well dated to the Early Iron Age (Hallstatt) according to pottery found in the sampled layers and on a radiocarbon dating (720–520 cal B.C.) of the wooden construction of the well ...
Antun Alegro +4 more
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Efficacy of Soybean Herbicides on Annual Morninglory [PDF]
, 2001 Field experiments were established in 2000 and 2001 at the Agricultural Research and Education Complex in Bowling Green, Kentucky to evaluate herbicide efficacy on annual morningglory (Ipomoea spp.) species and other weeds.
Oveson, Dawn
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Aktuelle Nachweise von höheren Pflanzen in der Umgebung von Halle (Saale) [PDF]
, 2012 Dieser Beitrag setzt die von JOHN & STOLLE (2007) veröffentlichten Nachweise höherer Pflanzen in der Umgebung von Halle (Saale ...
John, Heino
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A comparative study on the functional response of Wolbachia-infected and uninfected forms of the parasitoid wasp Trichogramma brassicae [PDF]
, 2010 Trichogramma species (Hymenoptera: Trichogrammatidae) are haplo-diploid egg parasitoids that are frequently used as biological control agents against lepidopteran pests.
Allahyari, H. +4 more
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Interrelationship of nitrogen and photo-period on the flowering, growth, and stem anatomy of certain long day and short day plants [PDF]
, 1945 The relation of nitrogen to the flowering and fruitfulness of plants has been subject of extended investigation by many workers. That nitrogen nutrition is intimately related to flower and fruit formation is generally agreed upon, but the various ...
Withrow, Alice Phillips
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Industrial Crops and ProductsInvasive plants pose a substantial threat to agricultural production, and their control elevates the costs associated with the application of synthetic chemical herbicides.
Zhixiang Liu +7 more
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Survey and Annotated Checklist of the Later Summer Flora of the Moist Soil Units at Holla Bend National Wildlife Refuge [PDF]
, 1991 We conducted a floristic survey of 22 moist soil units at Holla Bend National Wildlife Refuge during September and October of 1990. The moist soil units range in size from 0.4 to 9.7 ha and are depressions manipulated to provide food and shelter for ...
Johnson, George P., Walker, Stephen A.
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Modelo de la dinámica poblacional de Anoda cristata en un cultivo de soja resistente a glifosato bajo diferentes sistemas de manejo [PDF]
, 2007 Se desarrolló un modelo de simulación de la dinámica del banco de semillas de Anoda cristata (L.) Schlecht en un cultivo de soja. El modelo considera distintas estrategias de manejo: ausencia de control, control con la dosis recomendada y con la mitad de
Orioli, Gustavo Adolfo +3 more
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