Results 31 to 40 of about 780 (160)

Reproduction and offspring competitiveness of Senna obtusifolia are influenced by nutrient availability [PDF]

open access: yesNew Phytologist, 2002
Summary• Senna obtusifolia (sicklepod) is a troublesome weed in many agronomic cropping systems in the southeastern USA with varying fertility regimes. This series of experiments was initiated to determine the impact of nutrient availability on reproductive output and maternal effects.• Experiments were conducted with plants growing in soil in growth ...
Kimberly D, Tungate   +2 more
openaire   +2 more sources

Agromorphological Characterization of a Collection of Senna obtusifolia (L.) in Burkina Faso

open access: yesAnnual Research & Review in Biology, 2021
Aims: Senna obtusifolia (L.) is an important wild herbaceous species for subsaharan Africa population. It is used in human food and traditional medicine to treat several deseases. In Burkina Faso, despite its potentialities, this species is of a little interest in scientific research.
Nacambo, Haoua   +3 more
openaire   +2 more sources

Prospecção química de compostos produzidos por Senna alata com atividade alelopática Chemical prospecting of compounds produced by Senna alata with allelopathic activity

open access: yesPlanta Daninha, 2010
Senna alata é uma espécie daninha frequente em pastagens da região amazônica. Suas folhas apresentam propriedades medicinais capazes de influenciar a germinação e o desenvolvimento de outras plantas.
I.M.C. Rodrigues   +3 more
doaj   +1 more source

Changes in Senna obstuifolia Germination Requirements over 12 Months under Field Conditions

open access: yesInternational Journal of Agronomy, 2009
Senna obtusifolia seeds were collected in Fall 2003 and immediately field sown to assess dormancy alleviation and effect of after-ripening over a 12-month period on light
Jason K. Norsworthy, Marcos J. Oliveira
doaj   +1 more source

Estudo sobre o crescimento de fedegoso Growth analysis of sicklepod

open access: yesPlanta Daninha, 1997
O crescimento de Senna obtusifolia foi estudado sob condições de casa-de-vegetação, num delineamento inteiramente casualizado com 4 repetições . As plantas cresceram em vasos de 6 litros preenchidos com areia e irrigados com solução completa de Hoaglan d,
Eduardo A. L. Erasmo   +2 more
doaj   +1 more source

Efeito Alelopático de Extratos Aquosos de Senna obtusifolia (L.) H. Irwin e Barneby

open access: yesFloresta e Ambiente, 2023
RESUMO Neste trabalho, estudou-se a germinação de sementes de Lycopersicum esculentum submetidas a extratos Senna obtusifolia. Foram realizados ensaios para análise da germinabilidade e velocidade de germinação.
José Ricardo Barbosa da Silva   +1 more
doaj   +1 more source

Performance of distinct strategies on overcoming dormancy in Senna obtusifolia seeds

open access: yesRevista Engenharia na Agricultura - REVENG, 2022
Senna obtusifolia presents structures favorable to the effects of the dormancy phenomenon, presenting low germination rates for a certain period. This panorama can be solved by the dormancy-breaking process, which is caused by the exposure of the seed to adverse conditions that stimulate the germination process.
José Roberto Chaves Neto   +8 more
openaire   +2 more sources

Inhibitory Effects of the Lipophilic Extracts and An Isolated Meroditerpene of Brown Alga in Pasture Weeds in the Eastern Amazon Region [PDF]

open access: yesPlanta Daninha, 2019
: Two lipophilic extracts and atomaric acid (1), an isolated natural product, were obtained from the marine brown alga Stypopodium zonale (Dictyotaceae) to identify and characterize their potential inhibitory effects on the seed germination, radicle ...
C.J.B. RAMOS   +3 more
doaj   +1 more source

Efeitos alelopáticos do calopogônio em função de sua idade e da densidade de sementes da planta receptora Allelopathic effects of calopo according to its age and to seed density of the receiver plant

open access: yesPlanta Daninha, 2003
A intensidade dos efeitos potencialmente alelopáticos depende de fatores relacionados à espécie doadora e receptora. Neste trabalho, analisaram-se as variações nos efeitos alelopáticos do calopogônio (Calopogonium mucunoides) em função de sua idade (2, 4,
A.P.S. Souza Filho   +2 more
doaj   +1 more source

PHYTOTOXIC POTENTIAL OF THE GEOPROPOLIS EXTRACTS OF THE JANDAIRA STINGLESS BEE (Melipona subnitida) IN WEEDS

open access: yesRevista Caatinga, 2017
The objective of the present research is to characterize the phytotoxic activity of geopropolis from the Jandaira bee (Melipona subnitida Ducke) in the state of Ceará in Northeast Brazil and to analyze its effects. Extracts were prepared in 80% v/v grain
DANIEL SANTIAGO PEREIRA   +5 more
doaj   +1 more source

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