Results 61 to 70 of about 44,714 (260)

Persistência e fitotoxicidade do herbicida atrazine aplicado na cultura do milho sobre a cultura do girassol em sucessão Persistence and phytotoxicity of the herbicide atrazine applied on corn crop on successive sunflower crop

open access: yesPlanta Daninha, 2002
Embora o herbicida atrazine aplicado na cultura do milho seja seletivo para esta cultura, pode causar fitotoxicidade em cultivos em sucessão/rotação. Dois experimentos foram conduzidos em campo, a fim de avaliar o efeito residual do herbicida atrazine ...
A.M. Brighenti   +5 more
doaj   +1 more source

Effect of substrates on germination and seedling emergence of sunflower (Helianthus annuus L.) at the Yongka Western Highlands Research/Garden Park, Bamenda-Cameroon [PDF]

open access: yes, 2015
A study was carried out at the Yongka Western Highlands Research Garden Park, Nkwen­Bamenda in Cameroon to evaluate the effect of substrates on the germination and seedling emergence of sunflower (Helianthus annuus L.).
Fokou, L.   +4 more
core   +2 more sources

Uranium Sorption on Helianthus Annuus Core Shell [PDF]

open access: yesAfyon Kocatepe University Journal of Sciences and Engineering, 2016
Biyosorpsiyon, biyokutlede dogal olarak gerceklesen, biyokutlenin pasif olarak konsantre etme ve kirlilikleri hucresel yapisi uzerine baglamasini saglayan fizikokimyasal bir islemdir. Sulu cozeltilerden Helianthus Annuus cekirdegi kabuklarinda uranyum biosorpsiyonu batch adsorpsiyon sistemiyle, pH, adsorbat konsantrasyonu ve sicakligin bir fonksiyonu ...
openaire   +4 more sources

Salty suitors: High larval sodium intake reduces adult lifespan and influences reproductive behaviour in a lepidopteran herbivore

open access: yesEcological Entomology, EarlyView.
Low‐sodium females took significantly longer to start mating than high‐sodium females, but no pairings differed in the duration of copulation. Reproductive outputs, measured by number of clutches, hatching young, adult offspring and pupation time, did not differ across parental sodium pairings.
Maggie C. Vincent   +3 more
wiley   +1 more source

Helianthus winteri (Asteraceae), a New Perennial Species From the Southern Sierra Nevada Foothills, California [PDF]

open access: yes, 2013
Helianthus winteri is described from Fresno and Tulare Counties in the southern Sierra Nevada foothills of California. It is distinguished from H. annuus by its woody trunk, year-round blooming, and morphological characteristics.
Constable, John V. H.   +2 more
core   +3 more sources

Marcha de absorção de macronutrientes na cultura do girassol Macronutrient uptake of sunflower (Helianthus annuus L.)

open access: yesRevista Brasileira de Ciência do Solo, 2010
Este trabalho teve como objetivo estabelecer curvas de acúmulo de macronutrientes na cultura do girassol. Para isso, foi instalado um experimento em campo sobre Latossolo Vermelho distroférrico de textura muito argilosa, localizado na fazenda ...
Luiz Henrique Saes Zobiole   +3 more
doaj   +1 more source

Formulation and evaluation of alternative to beeswax for vegan lipsticks

open access: yesInternational Journal of Cosmetic Science, EarlyView.
Characterization of a cosmetic ingredient as a vegan alternative to beeswax. Investigation of binary oil–wax systems for cosmetic applications. Development of a predictive strategy for the formulation of vegan stick cosmetics. Abstract Honeybees' success is strictly linked to the chemical and application properties of their products: honey, beeswax (BW)
Manuela Loiacono   +4 more
wiley   +1 more source

Lethal Concentration of Carbonate OF Ca as a Function of the Osmotic Potential of the Solution in Sunflower (Heliantusannuus L.) [PDF]

open access: yes, 2017
In order to know the effect of CaCO3 in solution, sunflower seedlings cv. Victoria, an experiment was completely randomized, where five concentrations of calcium carbonate were evaluated to determine the lethal concentration (LC50), pH and EC of the ...
Diaz-Lopez, E. (Ernesto)   +6 more
core   +1 more source

Análise de crescimento de girassol em Latossolo com diferentes níveis de saturação por bases no Cerrado Growth analysis of sunflower in a Cerrado Oxisol with different levels of basis saturation

open access: yesPesquisa Agropecuária Brasileira, 2003
Com o objetivo de avaliar o comportamento de cinco cultivares de girassol em um Latossolo Vermelho argiloso, foram realizados quatro ensaios sob quatro níveis de saturação por bases (18%, 35%, 56% e 77%) obtidos com aplicação de calcário dolomítico.
Renato Fernando Amabile   +2 more
doaj   +1 more source

Home - About - Disclaimer - Privacy