Results 51 to 60 of about 1,870 (201)

Silencing of juvenile hormone‐related genes through RNA interference leads to molt failure and high mortality in the spongy moth

Insect Science, EarlyView.
The feasibility of using RNA interference to control the globally important quarantine pest, the spongy moth. Targeting genes related to JHs play an important role in the growth and development of insects. First, the open reading frames (ORFs) of Ldjhamt and Ldjheh were identified and characterized, and the target genes were cloned and double‐stranded ...
Wenzhuai Ji, Qing Xie, Xiaoxiao Chang, Juan Shi   +3 more
wiley   +1 more source

Factors affecting Venturia oleaginea infections on olive and effects of the disease on floral biology

Phytopathologia Mediterranea, 2019
The disease olive peacock eye was evaluated in organic olive orchards in Palestine (Asira, Burquin, Qabatia and Sir). In each orchard, six trees were randomly chosen (three pruned and three unpruned).
Tahreer Issa, Leen Almadi, Samer Jarrar, Michele Tucci, Roberto Buonaurio, Franco Famiani   +5 more
doaj   +1 more source

Stand Delineation of Pinus sylvestris L. Plantations Suffering Decline Processes Based on Biophysical Tree Crown Variables: A Necessary Tool for Adaptive Silviculture

Remote Sensing, 2021
Many planted Pinus forests are severely affected by defoliation and mortality processes caused by pests and droughts. The mapping of forest tree crown variables (e.g., leaf area index and pigments) is particularly useful in stand delineation for the ...
Mª Ángeles Varo-Martínez, Rafael M. Navarro-Cerrillo   +1 more
doaj   +1 more source

Status of ash (Fraxinus spp.) in mixed hardwood post‐outbreak forests near the epicentre of the emerald ash borer invasion

Agricultural and Forest Entomology, EarlyView.
The persistence and health of ash populations were characterized in post‐outbreak forests near the epicentre of the emerald ash borer (EAB) invasion in North America. Regenerating ash remained abundant, but densities of understory ash were higher in wetlands (hydric), while ash remained at the seedling stage in riparian (mesic) and upland (xeric ...
Aaron Tayal, Kayla I. Perry
wiley   +1 more source

Reação de genótipos de pessegueiro à ferrugem-da-folha Peach genotypes reaction to leaf rust

Pesquisa Agropecuária Brasileira, 2010
O objetivo deste trabalho foi identificar fontes de resistência à ferrugem-da-folha em pessegueiro. Foram realizadas três avaliações de incidência e severidade de ferrugem-da-folha em 15/1, 14/2 e 24/3 de 2005, em 17 genótipos; em 23/2/2006, a severidade
André Paulo Assmann, Idemir Citadin, Idalmir dos Santos, Américo Wagner Júnior   +3 more
doaj   +1 more source

Effects of wildfire on a pine stand in the Bohemian Switzerland National Park

Journal of Forest Science, 2012
The pine stand in the Havraní Skála locality in the Bohemian Switzerland National Park was affected by an extensive mixed-severity wildfire in summer 2006.
J. Trochta, K. Král, P. Šamonil
doaj   +1 more source

Exploiting Native Biodiversity for Invasive Species Management: The Case of Exorista larvarum as a Natural Enemy of the Invasive Box Tree Moth Cydalima perspectalis

Entomologia Experimentalis et Applicata, EarlyView.
The investigations evaluated the performance of the native parasitoid Exorista larvarum (L.) on last instar Cydalima perspectalis (Walker) larvae, using the factitious host Galleria mellonella (L.) as a control. Laboratory bioassays were conducted using no‐choice and choice (1:1 and 5:5) experimental designs.
Serena Gallizia, Santolo Francati, Maria Luisa Dindo, Chiara Ferracini   +3 more
wiley   +1 more source

Herbage intake by cattle in kikuyugrass pastures under intermittent stocking method

Revista Ciência Agronômica, 2019
Two complementary experiments were conducted to investigate the relationships between the canopy structure of Pennisetum clandestinum (kikuyugrass) pastures created by intermittent stocking strategies and daily herbage intake by cattle.
Daniel Schmitt, Deisy Andrade Padilha, Cauby Medeiros-Neto, Henrique Mendonça Nunes Ribeiro Filho, Lynn Elwood Sollenberger, André Fischer Sbrissia   +5 more
doaj   +1 more source

Heritability of peach tree resistance to bacterial leaf spot [PDF]

Pesquisa Agropecuária Brasileira, 2017
: The objective of this work was to evaluate the broad-sense heritability reaction to bacterial leaf spot (Xanthomonas arboricola pv. pruni), in peach tree populations obtained from directed crosses. Disease severity and defoliation of the genotypes were
André Luiz Varago, Idemir Citadin, Marcos Robson Sachet, Gener Augusto Penso, Maria do Carmo Bassols Raseira   +4 more
doaj   +1 more source

The Importance of the Larval Parasitoid Actia interrupta (Diptera: Tachinidae) in Low Density Eastern Spruce Budworm Populations

Entomologia Experimentalis et Applicata, EarlyView.
Actia interrupta is an important larval tachinid parasitoid during low‐density populations of the eastern spruce budworm. In the late 1980s during the outbreak collapse, Meteorus trachynotus was initially the most important species, but was replaced by A. interrupta. Host patch size and density had no impact on the parasitism rates by A.
Véronique Martel, Jacques Régnière, Jean‐Claude Thireau   +2 more
wiley   +1 more source