Results 61 to 70 of about 281 (131)

Assessing the Transferability of Species Distribution Models: A Cross‐Continental Evaluation

Ecology and Evolution, Volume 16, Issue 5, May 2026.
This study confirms that the conventional approach, namely using random holdout test datasets and the AUC, fails to reliably assess model transferability. Instead, using spatially independent test datasets and the RWIP provides a more robust evaluation approach.
Takayuki Matsui
wiley   +1 more source

Controle de plantas daninhas na cultura do milho (Zea mays L.) por meio de herbicidas Weed control in maize (Zea mays L.) with herbicides

Planta Daninha, 1979
Com o objetivo de se verificar a ação do butylate, aplicado isoladamente e em mistura com atrazine, no controle de plantas daninhas da cultura do milho, foi instalado um experimento de campo em solo fino areno-argiloso.
C. A. L. dos Santos, A. Rozanski
doaj  

Optimizing seeding ratios of field pea–brown mustard intercrops in Atlantic Canada

Agronomy Journal, Volume 118, Issue 2, March/April 2026.
Abstract Intercropping is a promising approach for ecological intensification that can enhance productivity and agroecosystem services. This study evaluated the agroecological performance of field pea (Pisum sativum) and brown mustard (Brassica juncea) intercropping across seeding ratios (0.5×, 1.0×, and 1.5× the recommended rates; 100 seeds m−2 ...
Qianwen Gong, Claude Caldwell, Tudor Borza, Aaron Mills, Ningbo Zeng, Niran Foster, Yunfei Jiang   +6 more
wiley   +1 more source

Design, Synthesis, Biological Activities and 3D-QSAR of New N,N'-Diacylhydrazines Containing 2,4-Dichlorophenoxy Moieties

Molecules, 2013
A series of new N,N'-diacylhydrazine derivatives were designed and synthesized. Their structures were verified by 1H-NMR, MS and elemental analysis.
Guo-Xiang Sun, Zhao-Hui Sun, Ming-Yan Yang, Xing-Hai Liu, Yi Ma, Yun-Yang Wei   +5 more
doaj   +1 more source

Plant functional diversity does not dilute virus infection, but community virus prevalence positively correlates with net C3 grass production

Journal of Ecology, Volume 114, Issue 2, February 2026.
This study examines if plant functional diversity dilutes plant virus prevalence in grass hosts and evaluates how virus prevalence influences net community and host production. Functional diversity did not mitigate or amplify virus prevalence. While we found that species relationships between virus prevalence and production varied, overall, virus ...
Beatriz A. Aguirre, Erika L. Mudrak, Alexandra J. Wright, Alison G. Power   +3 more
wiley   +1 more source

Ecological studies on the crabgrass, Digitaria sanguinalis SCPLI on the upland field.

Japanese Journal of Crop Science, 1951
1. In this ecological studies, the close relations among the crabgrass and several crops were observed in the upland field. 2. Branched ears of the crabgrass (dominant species) were correlated to numbers of its seed. 3. Falled seeds of this weed were found 218.2 in ten square centimeters after the sweet-potatoes were harvested.
openaire   +2 more sources

A first survey for herbicide resistant weeds across major maize growing areas in the North Island of New Zealand.

PLoS ONE
Weeds are increasingly documented with evolved resistance to herbicides globally. Three species have been reported as resistant in maize crops in New Zealand: Chenopodium album to atrazine and dicamba, Persicaria maculosa to atrazine and Digitaria ...
Zachary Ngow, Trevor K James, Ben Harvey, Christopher E Buddenhagen   +3 more
doaj   +1 more source

First Report of Anthracnose of Digitaria sanguinalis Caused by Colletotrichum hanaui in China

Plant Disease, 2010
Hairy crabgrass (Digitaria sanguinalis (L.) Scop.) is a troublesome weed in most agricultural crops worldwide. Considerable efforts are made to limit the invasiveness and impact of crabgrass on crop productivity, including evaluation of fungi as biocontrol agents (3).
H P, Qiu, Y L, Wang, Z, Zhang, X Q, Mao, H, Jiang, G C, Sun   +5 more
openaire   +2 more sources

Novedades taxonómicas y sinopsis del género Digitaria (Poaceae, Panicoideae, Paniceae) en América Central

Darwiniana, 2007
Se adicionan 10 nuevas citas: Digitaria abyssinica, D. aequiglumis var. aequiglumis, D. lanuginosa, D. nuda y D. venezuelae var. fendleri en Panamá; D. argillacea var. nulliseta y D. fuscescens en Honduras; D.
Andrea S. Vega, Zulma E. Rúgolo de Agrasar   +1 more
doaj  

STUDY OF THE EARLY ROOT DEVELOPMENT OF IMPORTANT ARABLE GRASS WEEDS IN MAIZE I. LARGE CRABGRASS (DIGITARIA SANGUINALIS (L.) SCOP) [PDF]

Journal of Central European Agriculture, 2002
We have studied the primary root development of the one of the most important grass weeds - large crabgrass (Digitaria sanguinalis (L.) Scop). The primary, secondary and tertiary root development was studied in laboratory (thermostat), and in pots in ...
Z MIKE, K HUNYADI
doaj