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

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.

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Effect of foliar fertilizer and fungicidal protection against leaf spot diseases on winter wheat

Acta Agrobotanica ◽

10.5586/aa.2005.008 ◽

2012 ◽

Vol 58 (1) ◽

pp. 51-58 ◽

Cited By ~ 1

Author(s):

Agnieszka Mączyńska ◽

Mariola Głazek ◽

Barbara Krzyzińska

Keyword(s):

Winter Wheat ◽

Leaf Area ◽

Field Experiments ◽

Plant Protection ◽

Green Leaf ◽

Foliar Fertilizer ◽

Wheat Leaf ◽

Wheat Leaves ◽

Different Levels ◽

Green Leaf Area

Field experiments were carried out in the seasons 2000/2001 and 2001/2002 in Plant Protection Institute, Sooenicowice Branch to assess the influence of foliar fertilizers such as Ekolist PK 1, Ekolist Mg, Mikrosol Z and Urea on healthiness of winter wheat. Foliar fertilizers were mixed with fungicides. The fungicides were applied at full or half recommended doses. The effect of the disease on wheat leaves was evaluated three times in each vegetation season. Remaining green leaf area (GLA) of leaves was also determined. GLA of the leaves F-1 was not significantly different for each combination with different fertilization and different levels of chemical treatment. The application of foliar fertilizer only had no effect on green leaf area (GLA). The results indicate that foliar fertilization of all experimental plots improved leaf condition and therefore halted the development of wheat leaf diseases. The increases of 1000 grain mass and yield was high for each plot where a fertilizer and a full or half dose of a fungicide was applied. Foliar fertilizing with no chemical control had no proven effect on studied parameters.

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Use of in-field measurements of green leaf area and incident radiation to estimate the effects of yellow rust epidemics on the yield of winter wheat

Developments in Crop Science - Perspectives for Agronomy - Adopting Ecological Principles and Managing Resource Use, Proceedings of the 4th Congress of the European Society for Agronomy ◽

10.1016/s0378-519x(97)80010-4 ◽

1997 ◽

pp. 77-86 ◽

Cited By ~ 4

Author(s):

R.J. Bryson ◽

N.D. Paveley ◽

W.S. Clark ◽

R. Sylvester-Bradley ◽

R.K. Scott

Keyword(s):

Winter Wheat ◽

Leaf Area ◽

Yellow Rust ◽

Field Measurements ◽

Incident Radiation ◽

Green Leaf ◽

Green Leaf Area

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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

Crop Protection ◽

10.1016/j.cropro.2006.10.027 ◽

2007 ◽

Vol 26 (8) ◽

pp. 1272-1280 ◽

Cited By ~ 26

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

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Disease development and senescence of the flag leaf of winter wheat in response to propiconazole

The Journal of Agricultural Science ◽

10.1017/s002185960003135x ◽

1982 ◽

Vol 99 (3) ◽

pp. 661-663 ◽

Cited By ~ 7

Author(s):

P. S. Kettlewell ◽

W. P. Davies ◽

T. J. Hocking

Keyword(s):

Winter Wheat ◽

Leaf Area ◽

Photosynthetic Rate ◽

Flag Leaf ◽

Green Leaf ◽

Disease Development ◽

Green Area ◽

Green Leaf Area

Fungicide applications to wheat have been reported to maintain the green area of the leaves (Dickinson & Walpole, 1975; Stevens & Palmer, 1980). It is not known, however, whether the photosynthetic rate of the leaves is also maintained. It was therefore decided to investigate disease development, green leaf area and photosynthesis of the flag leaf of winter wheat in response to the fungicide propiconazole, which has not previously been reported to influence senescence in the field.

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A simple algorithm for yield estimates: Evaluation for semi-arid irrigated winter wheat monitored with green leaf area index

Environmental Modelling & Software ◽

10.1016/j.envsoft.2007.10.003 ◽

2008 ◽

Vol 23 (7) ◽

pp. 876-892 ◽

Cited By ~ 85

Author(s):

Benoît Duchemin ◽

Philippe Maisongrande ◽

Gilles Boulet ◽

Iskander Benhadj

Keyword(s):

Winter Wheat ◽

Leaf Area Index ◽

Leaf Area ◽

Simple Algorithm ◽

Green Leaf ◽

Area Index ◽

Semi Arid ◽

Green Leaf Area

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

Crop and Pasture Science ◽

10.1071/cp16226 ◽

2017 ◽

Vol 68 (4) ◽

pp. 317 ◽

Cited By ~ 2

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.

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