Results 131 to 140 of about 1,238 (175)

Directional Spread of Septoria Leaf Spot in Tomato Rows

Plant Disease, 1997
Disease severity of Septoria leaf spot in rows of fresh-market tomato plants that were not staked was assessed in 1992 and 1993 following inoculation of the center plant in each row. Both temporal disease increase and spatial disease gradients were best described by the logistic model.
S K, Parker, F W, Nutter, M L, Gleason
openaire   +4 more sources

Efficacy of Organic Fungicides for Management of Hemp Septoria Leaf Spot

Plant Health Progress
Septoria leaf spot, caused by the fungus Septoria cannabis, is among the most common and devastating diseases of field-grown hemp in New York State. Fungicide field trials were conducted in 2023 and 2024 to test products previously deemed efficacious and to test products of interest to New York State hemp growers.
Jocelyn A. Schwartz, Sebastian G. April, Charles T. C. Day, Christine D. Smart   +3 more
openaire   +3 more sources

Reemergence of Septoria Leaf Spot Caused by Septoria cannabis on Hemp in Kentucky

Plant Disease, 2021
Hemp reemerged in 2014 after being illegal for over 50 years and restricted for 90 years. Today, hemp is primarily grown for production of cannabidiol (CBD), with limited acreage dedicated to fiber. One of the most frequent and destructive leaf spot diseases of hemp cultivars grown for CBD is Septoria leaf spot.
Mostafa Rahnama, Desiree Szarka, Hua Li, Ed Dixon, Lisa Castlebury, Nicole A. Ward Gauthier   +5 more
openaire   +2 more sources

Septoria Leaf Spot on Dogwoods

Arboriculture & Urban Forestry, 1989
The fungus that frequently defoliates Siberian and yellow-twig dogwoods is identified as Septoria cornicola. Pathogenicity was confirmed in artificial inoculation trials, and environmental influences on fungal growth, sporulation, and spore germination were established.
Dan Neely, D.S. Nolte
openaire   +1 more source

Effect of septoria leaf spot in spring wheat

New Zealand Journal of Crop and Horticultural Science, 1976
A natural infection of Septoria tritici first appeared in an ‘Aotea’ wheat trial at tillering (G.S.3), when the disease occupied 10% of the third‐leaf area. Fungicide sprays applied at tillering reduced the severity of the disease for up to 6 weeks.
J. G. Hampton, R. C. Close
openaire   +1 more source

New species of Septoria associated with leaf spot diseases in Iran

Mycologia, 2019
Species of Septoria are commonly associated with leaf spot diseases of a broad range of plant hosts worldwide. During our investigation of fungi associated with leaf spot diseases in northern and northwestern Iran, several Septoria isolates were recovered from symptomatic leaves on different herbaceous and woody plants in the Asteraceae, Betulaceae ...
Mounes Bakhshi, Mahdi Arzanlou, Rasoul Zare, Johannes Z. Groenewald, Pedro W. Crous   +4 more
openaire   +2 more sources

Leaf Spotting Toxins from Septoria Nodorum

1989
Septoria nodorum was cultured on a modified Fries medium containing yeast extract at 20° C in a 16 hour light, 8 hour dark cycle. The medium was acidified to pH 4.5 and extracted with ethyl acetate. This extract was taken to dryness and redissolved in distilled water.
H. P. Kurzyca, J. Friend
openaire   +1 more source

First report of Septoria leaf spot of pistachio in Iran

Australasian Plant Disease Notes, 2009
During the summer of 2008, a severe foliar disease was observed on pistachio trees in Golestan Province, in northern Iran. Signs and symptoms of the disease were abundant pycnidia followed by brown spots on leaves. Septoria pistacina was consistently isolated from all the diseased leaves.
M. A. Aghajani, B. Aghapour, T. J. Michailides   +2 more
openaire   +1 more source

Sigatoka-like leaf spots : Septoria leaf spot

2000
Description de la septoriose du bananier qui a été identifiée ces dernières années. Après un historique qui relate les évènements qui ont conduit à supposer l'existance d'une nouvelle maladie, les auteurs en décrivent les symptômes, l'agent causal, le cycle et l'épidémiologie de la maladie ainsi que les intractions connues entre le champignon et la ...
Carlier, Jean, Mourichon, Xavier, Jones, D.R.   +2 more
openaire   +1 more source

Comparison of fungicides for control of leaf spot (Septoria apiicola) of celery

Annals of Applied Biology, 1971
SUMMARYOf twenty‐one fungicides tested at recommended rates of application for their effectiveness in controlling leaf spot of celery grown in Ireland on peat and on a clay‐loam soil, three formulations containing fentin acetate with maneb and formulations of fentin hydroxide and fentin chloride were most effective.
E W, Ryan, T, Kavanagh
openaire   +2 more sources