Results 71 to 80 of about 2,005 (203)

Interferência de plantas daninhas na cultura do sorgo sacarino. [PDF]

open access: yes, 2019
Este trabalho teve como objetivo o estudo fitossociológico da comunidade infestante ao longo do ciclo de desenvolvimento do sorgo sacarino e a determinação do período crítico de prevenção à interferência das plantas daninhas na cultura.
GALON, L.   +6 more
core   +1 more source

How and why do species break a developmental trade‐off? Elucidating the association of trichomes and stomata across species

open access: yesAmerican Journal of Botany, Volume 111, Issue 5, May 2024.
Abstract Premise Previous studies have suggested a trade‐off between trichome density (Dt) and stomatal density (Ds) due to shared cell precursors. We clarified how, when, and why this developmental trade‐off may be overcome across species. Methods We derived equations to determine the developmental basis for Dt and Ds in trichome and stomatal indices (
Alec S. Baird   +12 more
wiley   +1 more source

Reproduction of Pratylenchus zeae on Weeds [PDF]

open access: yesPlanta Daninha, 2017
Weeds can be hosts of root-lesion nematode (Pratylenchus spp.), maintaining or increasing their population in the soil. The objective of this study was to evaluate the reaction of 25 weeds species to the nematode Pratylenchus zeae.
C. BELLÉ   +4 more
doaj   +1 more source

Levantamento de plantas daninhas em cafezais, em solos com diferentes níveis de fertilidade em Rondônia. [PDF]

open access: yes, 2012
O objetivo deste trabalho foi realizar um levantamento de plantas daninhas em cafezais de Coffea canephora, localizados em dois solos com diferentes níveis de fertilidade, com o intuito auxiliar na definição de um manejo adequado das mesmas.bitstream ...
COSTA, R. S. C. da   +6 more
core  

Anthracocystis panici-leucophaei: A Potential Biological Control Agent for the Grassy Weed Digitaria insularis

open access: yesAgronomy
Anthracocystis panici-leucophaei, causal agent of smut on Digitaria insularis (sourgrass), was evaluated as a biological control agent for this weed. Two types of inocula (teliospore and sporidia) were tested to assess its infectivity.
Adriany Pena de Souza   +8 more
doaj   +1 more source

Eficácia de imazethapyr e chlorimuron-ethyl em aplicações de pré-semeadura da cultura da soja Efficacy of imazethapyr and chlorimuron-ethyl in pre-sowing applications on soybean crop

open access: yesPlanta Daninha, 2006
O trabalho teve como objetivo avaliar a ação dos herbicidas imazethapyr e chlorimuron-ethyl em aplicações de pré-semeadura da cultura da soja, visando o controle das plantas daninhas presentes antes da semeadura e a redução na emergência de plantas ...
S.O. Procópio   +8 more
doaj   +1 more source

Range Grasses of Hawaii [PDF]

open access: yes, 1933
This bulletin discusses the more important grasses growing on local ranges, their growth in other parts of the world, nature of growth, palatability, persistence, climatic requirements, and present importance and possibilities for ...
Davis, W.C.   +3 more
core  

Pest categorisation of Pyrrhoderma noxium

open access: yesEFSA Journal, Volume 22, Issue 3, March 2024.
Abstract Following the commodity risk assessment of bonsai plants (Pinus parviflora grafted on Pinus thunbergii) from China performed by EFSA, the EFSA Plant Health Panel performed a pest categorisation of Pyrrhoderma noxium, a clearly defined plant pathogenic basidiomycete fungus of the order Hymenochaetales and the family Hymenochaetaceae.
EFSA Panel on Plant Health (PLH)   +24 more
wiley   +1 more source

Control of Digitaria insularis (L.) Fedde in eucalyptus forests: shading increases sensitivity to glyphosate applied alone and in a mixture with carfentrazone-ethyl

open access: yesDiscover Agriculture
Shading, the predominant condition in most of the eucalyptus cultivation cycle, causes changes in the morphological and physiological weed's characteristics, which can alter their responses to glyphosate and carfentrazone-ethyl, important herbicides for ...
Guilherme Augusto Paiva Ferreira   +4 more
doaj   +1 more source

Efeitos da convivência do capim-amargoso na produtividade da soja. [PDF]

open access: yes, 2012
O capim-amargoso (Digitaria insularis) é uma espécie nativa do Continente Americano e, como tal, sempre foi tida como uma importante invasora no Brasil (Kissmann e Groth, 1997).
ADEGAS, F. S.   +4 more
core  

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