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Active phloem sap collection by Trigona spinipes (Fabricius) (Hymenoptera, Apidae) in Artemisia annua Linn (Asteraceae) Biological Sciences
Malagodi-Braga, Kátia Sampaio; Moriconi, Waldemore; Queiroga, Joel Leandro de; Urchei, Mário Artemio; Pazianotto, Ricardo Antônio Almeida; Roncon, Kenny.
Trigona spinipes Fabricius (Apidae: Meliponini), is a common stingless bee widely seen in urban and rural areas in Brazil, popularly known as irapuá, arapuá or bee-dog. Although these bees are considered pollinators of some cultivated plants, they are better known for the damage they cause in different crops. During experimental agroecological cultivation of Artemisia (Artemisia annua Linn, Asteraceae), in Jaguariúna (SP, Brazil), stingless bees Trigona spinipes (Fabricius) were observed sucking phloem sap directly from the plant, a phenomenon not yet described in scientific literature. This study aimed to register and describe the phloem sap-sucking behavior performed by T. spinipes for the first time, as well as to assess the potential impact of this...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Medicinal plant; Insect behavior; Plant injury; Stingless bee Farming..
Ano: 2019 URL: http://periodicos.uem.br/ojs/index.php/ActaSciBiolSci/article/view/47548
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Soybean tolerance to sulfentrazone and diclosulam in sandy soil Planta Daninha
Dalazen,Giliardi; E. Kaspary,Tiago; Markus,Catarine; Pisoni,Alexandre; Merotto Jr.,Aldo.
Abstract Background: The use of pre-emergent herbicides is an important tool to control weeds, however the tolerance of soybean to these herbicides can vary according to the type of soil. Objective: The aim of this study was to evaluate sulfentrazone and diclosulam soybean selectivity in a sandy soil, in order to establish these herbicides as supporting tools in weed control. Methods: The treatments consisted of six doses of sulfentrazone (150 to 400 g ha-1) and diclosulam (25.2 to 75.6 g ha-1), and an untreated control. A field study was repeated in two growing seasons (2013/14 and 2014/15) in a sandy soil. Results: The occurrence of injury depended on the growing season. The first season presented lower rainfall rates during the crop cycle. The...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Glycine max; Plant injury; Pre-emergence herbicides; Weed management.
Ano: 2020 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-83582020000100337
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