scholarly journals Effects of a strobilurin-based spray programme on disease control, green leaf area, yield and development of fungicide-resistance in Mycosphaerella graminicola in Northern Ireland

2007 ◽  
Vol 26 (8) ◽  
pp. 1272-1280 ◽  
Author(s):  
C. McCartney ◽  
P.C. Mercer ◽  
L.R. Cooke ◽  
B.A. Fraaije
Keyword(s):  
Northern Ireland ◽  
Disease Control ◽  
Leaf Area ◽  
Fungicide Resistance ◽  
Mycosphaerella Graminicola ◽  
Green Leaf ◽  
Green Leaf Area

scholarly journals Comparison of Disease Occurrence and Green Leaf Area (GLA) of Winter Wheat Depending on the Forecrop and Differentiated Fungicidal Protection Used

2010 ◽  
Vol 50 (4) ◽  
pp. 489-495 ◽  
Author(s):  
Dariusz Wyczling ◽  
Leszek Lenc ◽  
Czesław Sadowski
Keyword(s):  
Winter Wheat ◽  
Leaf Area ◽  
Plant Protection ◽  
Mycosphaerella Graminicola ◽  
Brown Rust ◽  
Stagonospora Nodorum ◽  
Green Leaf ◽  
Pyrenophora Tritici Repentis ◽  
Disease Occurrence ◽  
Green Leaf Area

Comparison of Disease Occurrence and Green Leaf Area (GLA) of Winter Wheat Depending on the Forecrop and Differentiated Fungicidal Protection UsedThe effect of the forecrop and differentiated chemical plant protection on the intensity of fungal leaf diseases of winter wheat were studied from 1999-2008. Five (I-V) separate experiments were conducted in Mazury (Szestno I,), Żuławy Wiślane (Lisewo II), and Powiśle (Wielgłowy III, IV and Radostowo V). The intensity of diseases varied. Powdery mildew (Blumeria graminis) was noted in relatively low or trace intensity. On the other hand, there was a large amount of necrotic leaf spot complexes caused byMycosphaerella graminicola, Stagonospora nodorum, Pyrenophora tritici-repentisandFusariumspp. In 2000, 2001 and 2003 brown rust (Puccinia recondita) was noted in high intensity. The applied treatments were very effective in reducing fungal disease on leaves. The surface of the upper leaves (Green leaf area - GLA) with no symptoms of infection and fungicide use were significantly higher than in the control. It was also found that the GLA of crops grown after oilseed rape was higher than the GLA of crops grown after wheat.

Quality and yield response to the control of Mycosphaerella graminicola in wheat as affected by nitrogen rate and cultivar bread-making characteristics

2017 ◽  
Vol 68 (4) ◽  
pp. 317 ◽  
Author(s):  
María Constanza Fleitas ◽  
Ana Carolina Castro ◽  
María Rosa Simón
Keyword(s):  
Leaf Area ◽  
Field Experiments ◽  
Mycosphaerella Graminicola ◽  
Green Leaf ◽  
Yield Response ◽  
Bread Making ◽  
Progress Curve ◽  
Leaf Area Duration ◽  
Strobilurin Fungicide ◽  
Green Leaf Area

Septoria leaf blotch (SLB), caused by Mycosphaerella graminicola, reduces yield and grain quality of wheat (Triticum aestivum L.) by affecting the photosynthetically active area of the crop. This might influence grain protein concentration (GPC) and affect bread-making parameters. Nitrogen (N) fertilisation is required to achieve high yields in wheat; however, it may enhance the development of foliar diseases such as SLB. The aim of this study was to evaluate the effect of fungicide and N rate on SLB severity, green-leaf-area duration, grain yield and bread-making parameters in three wheat cultivars differing in bread-making characteristics. Two field experiments were conducted during 2009 and 2010 in a split-split-plot design with three fungicide treatments (triazole, triazole–strobilurin, nil) as main plots, three N fertiliser rates as subplots and three cultivars as sub-subplots. Fungicides significantly reduced the area under disease-progress curve (AUDPC) and this was associated with increased yield, which varied among cultivars. The AUDPC was lower in the higher N-rate treatments. Fungicide applications and increasing N rates extended green-leaf-area duration. GPC increased in untreated plots and it was reduced with applications of triazole–strobilurin fungicide. GPC reduction caused by this type of fungicide tended to be lower when the rate of N increased. The two cultivars with low bread-making characteristics showed a tendency to greater reductions in GPC with both fungicide types. Regarding quality variables, only tenacity and dough strength were reduced by the triazole-strobilurin fungicide. On average, for all treatments, tenacity, water absorption and dough development time were higher in the best quality group cultivars.

Prediction of Daily Green Leaf Area Index for Corn 1

1980 ◽  
Vol 72 (6) ◽  
pp. 999-1005 ◽  
Author(s):  
Robert F. Dale ◽  
Dirceu T. Coelho ◽  
Kevin P. Gallo
Keyword(s):  
Leaf Area Index ◽  
Leaf Area ◽  
Green Leaf ◽  
Area Index ◽  
Green Leaf Area

Using hyperspectral radiometry to predict the green leaf area index of turfgrass

2015 ◽  
Vol 36 (5) ◽  
pp. 1470-1483 ◽  
Author(s):  
Nan An ◽  
Anthony L. Goldsby ◽  
Kevin P. Price ◽  
Dale J. Bremer
Keyword(s):  
Leaf Area Index ◽  
Leaf Area ◽  
Green Leaf ◽  
Area Index ◽  
Green Leaf Area

scholarly journals Does Maintaining Green Leaf Area in Sorghum Improve Yield under Drought? I. Leaf Growth and Senescence

Crop Science ◽  
2000 ◽  
Vol 40 (4) ◽  
pp. 1026-1037 ◽  
Author(s):  
Andrew K. Borrell ◽  
Graeme L. Hammer ◽  
Andrew C. L. Douglas
Keyword(s):  
Leaf Area ◽  
Leaf Growth ◽  
Green Leaf ◽  
Green Leaf Area
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