Evaluation of triadimenol seed treatment for early season control of tan spot, powdery mildew, spot blotch and Septoria nodorum spot on spring wheat

1986 ◽  
Vol 5 (2) ◽  
pp. 83-87 ◽  
Author(s):  
W.C. Da Luz ◽  
G.C. Bergstrom
Keyword(s):  
Powdery Mildew ◽  
Spring Wheat ◽  
Seed Treatment ◽  
Spot Blotch ◽  
Tan Spot ◽  
Septoria Nodorum ◽  
Early Season

scholarly journals INFLUENCE OF SEED TREATMENT AND VARIETY ON PLANTS DAMAGE OF SPRING BY ROOT ROTS

2020 ◽  
Vol 14 (4) ◽  
pp. 16-19
Author(s):  
Aleksey Balykin ◽  
Leonid Shashkarov
Keyword(s):  
Powdery Mildew ◽  
Spring Wheat ◽  
Root Rot ◽  
Seed Treatment ◽  
Treatment Control ◽  
Root Rots ◽  
Seed Dressing ◽  
Chuvash Republic ◽  
Wheat Seeds

The article discusses the issues of root rot, leaf and stem diseases (septoria, powdery mildew, rust) during tillering-exiting the tube, fusarium and smut during heading, depending on varietal characteristics and seed dressing in the conditions of the Chuvash Republic. Margarita, Simbirtsit and Prokhorovka varieties were studied. The second factor is seed treatment in three grades: 1. Without treatment (control one). 2. Seed treatment with Benlat. 3. Seed treatment with Nano-Gro. The results of the analysis of lesions by root rot, leaf and stem diseases (septoria, powdery mildew, rust) during tillering-exiting the tube, fusarium and smut during heading are presented. The effect of Nano-Gro in combination with the seed dresser Benlat was also studied. It has been shown that pre-sowing treatment of wheat seeds with Nano-Gro solution helps to reduce damage by root rot, leaf and stem diseases (septoria, powdery mildew, rust) during tillering-exiting the tube, fusarium and smut during ear formation in spring wheat.

scholarly journals AC Baltic spring wheat

1992 ◽  
Vol 72 (2) ◽  
pp. 469-471
Author(s):  
H. G. Nass ◽  
H. W. Johnston ◽  
C. R. Blatt ◽  
J. S. Bubar ◽  
A. V. Rodd ◽  
...  
Keyword(s):  
Triticum Aestivum ◽  
Powdery Mildew ◽  
Fusarium Graminearum ◽  
Spring Wheat ◽  
Triticum Aestivum L ◽  
Septoria Nodorum ◽  
Head Blight ◽  
Lodging Resistance ◽  
Glume Blotch ◽  
Cultivar Description

AC Baltic is a spring feed wheat (Triticum aestivum L. em. Thell.) with high grain yield, medium maturity and good lodging resistance. It is resistant to powdery mildew (caused by Erysiphe graminis, D.C. ex Merat f. sp. tritici Marchai), moderately susceptible to septoria leaf and glume blotch (caused by Septoria nodorum (Berk.) Berk.) and moderately tolerant to fusarium head blight (caused by Fusarium graminearum Schwabe). AC Baltic is suited for production in eastern Canada.Key words: Wheat (spring), cultivar description

scholarly journals Yield and Yield Components Response to Defoliation of Spring Wheat Genotypes with Different Level of Resistance to Helminthosporium Leaf Blight

2005 ◽  
Vol 26 ◽  
pp. 43-50 ◽  
Author(s):  
UR Rosyara ◽  
RC Sharma ◽  
SM Shrestha ◽  
E Duveiller
Keyword(s):  
Grain Yield ◽  
Spring Wheat ◽  
Flag Leaf ◽  
Spot Blotch ◽  
Leaf Blight ◽  
Tan Spot ◽  
Index Number ◽  
Leaf Removal ◽  
Wheat Genotypes ◽  
Helminthosporium Leaf Blight

Breeding for resistance to Helminthosporium leaf blight (HLB) caused by a complex of spot blotch (Cochliobolus sativus) and tan spot (Pyerenophora tritici-repentis Died) of wheat (Triticum aestivum L.) is difficult due to complex nature of resistance, and high influence of environment. This study was conducted to examine whether genotypes having variation in level of resistance and tolerance differ in compensation to loss of leaves. Five spring wheat genotypes with different levels of resistance and tolerance to HLB were grown under irrigated field conditions in randomized complete block design during 2001-2002 and 2002- 2003 wheat-growing season at Rampur, Chitwan, Nepal. Defoliation treatments consist of removal of flag (F), penultimate (F-1), and both F and F-1 leaves were done one day after anthesis. Results showed that defoliation had significant effects on grain yield, biomass yield, thousand-kernel weight (TKW) but not on harvest index, number of grains per spike, kernel per spikelet, and spikelets per spike. All genotypes included in this study showed some degree of compensation for loss of F, F-1, and both F and F-1 leaves, which was found to be variable between years. Removal of flag leaf was compensated by the resistant genotype NL750 for both grain yield and TKW but not for both F and F-1 leaves. Loss of both F and F-1 leaves was better compensated by BL 1473, a stably tolerant genotype in both years. For other genotypes sensitivity to defoliation was found as variable as tolerance to HLB. Key words: Spot blotch, tan spot, defoliation, compensation, flag leaf removal, penultimate leaf removal J. Inst. Agric. Anim. Sci. 26:43-50 (2005)

scholarly journals Complex resistance of spring and winter bread wheat lines to biotic and abiotic stresses

2021 ◽  
Vol 25 (7) ◽  
pp. 723-731
Author(s):  
I. F. Lapochkina ◽  
N. R. Gainullin ◽  
O. A. Baranova ◽  
N. M. Kovalenko ◽  
L. A. Marchenkova ◽  
...  
Keyword(s):  
Salt Tolerance ◽  
Spring Wheat ◽  
Stem Rust ◽  
Genetic Material ◽  
Spot Blotch ◽  
Tan Spot ◽  
Initial Material ◽  
Parental Form ◽  
Winter Bread Wheat ◽  
Group Resistance

An original initial material of spring and winter bread wheat with group resistance to stem and leaf rust was developed using new donors of resistance to stem rust: winter soft wheat GT 96/90 (Bulgaria) and accession 119/4-06rw with genetic material of the species Triticum migushovae and (Aegilops speltoides and Secale cereale), respectively, a line of spring wheat 113/00i-4 obtained using the species Ae. triuncialis and T. kiharae, as well as spring accession 145/00i with genetic material of the species Ae. speltoides resistant to leaf rust. The transfer of effective Sr-genes to progeny was monitored using molecular markers. New lines underwent a field assessment of resistance to leaf and stem rust in the epiphytotic development of diseases in the Central Region of the Russian Federation, as well as in the North Caucasus and Western Siberia, and showed high resistance to these pathogens. Fourteen genotypes of spring wheat with group resistance to these diseases and parental forms that participated in the origin of the lines were evaluated for resistance to spot blotch (Cochliobolus sativus) and tan spot (Pyrenophora tritici-repentis) using isolates from Kazakhstan and Omsk in laboratory conditions. A highly resistant parental form of winter soft wheat from “Arsenal” collection 119/4-06rw (wheat-Ae. speltoides-rye hybrid 2n = 42) with group resistance to two spots, four medium-resistant genotypes to both isolates of tan spot from Kazakhstan and Omsk populations of the pathogen, as well as genotypes resistant to the Omsk isolate of P. triticirepentis (parental form 113/00i-4 and lines 1-16i, 6-16i, 9-16i) were isolated. Among the lines of winter wheat, four were identified with group resistance to spot blotch and tan spot. Additionally, the stress resistance of the lines to NaCl salinization and prolonged flooding of seeds with water was evaluated at the early stages of ontogenesis in laboratory conditions. Lines 33-16i, 37-16i, 32-16i and 9-16i showed a high ability to withstand excess moisture. Lines 33-16i, 37-16i, 32-16i and 3-16i were characterized by high salt tolerance, exceeding the average of 49.7 %. Among the winter genotypes, lines were identified with increased resistance to hypoxia (37-19w, 32-19w, 16-19w, 90-19w) and with increased salt tolerance (20-19w, 9-19w, 37-19w, 90-19w), significantly exceeding the standard cv. Moskovskaya 39. The listed lines are of interest as sources of resistance to anaerobic and salt stress, as well as donors of resistance to a group of fungal diseases: leaf and stem rust and tan spot. We attribute the increased level of resistance of the new initial material to the presence of alien translocations in the original parental forms involved in the origin of the lines.

scholarly journals Seed treatment for control leaf spot diseases of spring wheat

2012 ◽  
Vol 58 (1) ◽  
pp. 37-43 ◽  
Author(s):  
Barbara Krzyzińska ◽  
Mariola Głazek ◽  
Agnieszka Mączyńska
Keyword(s):  
Spring Wheat ◽  
Leaf Spot ◽  
Seed Treatment ◽  
Research Work ◽  
Brown Rust ◽  
Tan Spot ◽  
Growth Stages ◽  
High Biological Activity ◽  
Seed Dressing ◽  
Septoria Leaf Spot

In the years 2001 and 2002 at the Institute of Plant Protection Branch in Sooenicowice research work was performed on seed treatment with fungicides against leaf diseases of spring wheat cv. Ismena caused by pathogenic fungi: <i>Blumeria graminis</i>, <i>Phaeasphaeria nodorum</i>, <i>Puccinia recondita</i> i <i>Pyrenophora tritici</i>-<i>repentis</i>. Two variants of protection were included in the experiment: seed dressing with fungicides or seed dressing and single application of foliar spray at GS 49. At early growth stages of spring wheat a very high biological activity against powdery mildew, septoria leaf spot, brown rust and tan spot was recorded for seed dressing containing triticonazole+prochloraz. In the case of triadimenol+imazalil+fuberidazole only a weak, but long-lasting effect against brown rust and septoria leaf spot was observed. Leaf infection as well as 1000 grain mass and yield, in the experimental combination with using triticonazole+prochloraz were on the same level as in the experimental variant where after seed dressing with triadimenol+imazalil+fuberidazole plots were sprayed with tridemorf+epoxykonazole at GS 49. It was concluded that seed dressing preparation containing triticonazole+prochloraz constituted a good base for protection of spring wheat against foliar diseases.

scholarly journals A wheat chromosome 5AL region confers seedling resistance to both tan spot and Septoria nodorum blotch in two mapping populations

2019 ◽  
Vol 7 (6) ◽  
pp. 809-818 ◽  
Author(s):  
Wenjing Hu ◽  
Xinyao He ◽  
Susanne Dreisigacker ◽  
Carolina P. Sansaloni ◽  
Philomin Juliana ◽  
...  
Keyword(s):  
Wheat Chromosome ◽  
Tan Spot ◽  
Septoria Nodorum ◽  
Seedling Resistance ◽  
Septoria Nodorum Blotch ◽  
Mapping Populations

scholarly journals Crosses with spelt improve tolerance of South Asian spring wheat to spot blotch, terminal heat stress, and their combination

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Ajeet Kumar Pandey ◽  
Vinod Kumar Mishra ◽  
Ramesh Chand ◽  
Sudhir Navathe ◽  
Neeraj Budhlakoti ◽  
...  
Keyword(s):  
Grain Yield ◽  
Spring Wheat ◽  
High Performance ◽  
Recombinant Inbred Lines ◽  
Spot Blotch ◽  
Spikelet Sterility ◽  
Strong Negative Correlation ◽  
Terminal Heat Stress ◽  
H 26 ◽  
The Individual

AbstractSpot blotch and terminal heat are two of the most important stresses for wheat in South Asia. A study was initiated to explore the use of spelt (Triticum spelta) to improve tolerance to these stresses in spring wheat (T. aestivum). We assessed 185 recombinant inbred lines (RILs) from the cross T. spelta (H + 26) × T. aestivum (cv. HUW234), under the individual stresses and their combination. H + 26 showed better tolerance to the single stresses and also their combination; grain yield in RILs was reduced by 21.9%, 27.7% and 39.0% under spot blotch, terminal heat and their combined effect, respectively. However, phenological and plant architectural traits were not affected by spot blotch itself. Multivariate analysis demonstrated a strong negative correlation between spikelet sterility and grain yield under spot blotch, terminal heat and their combination. However, four recombinant lines demonstrated high performance under both stresses and also under their combined stress. The four lines were significantly superior in grain yield and showed significantly lower AUDPC than the better parent. This study demonstrates the potential of spelt wheat in enhancing tolerance to spot blotch and terminal heat stresses. It also provides comprehensive evidence about the expression of yield and phenological traits under these stresses.

Use of foliar-applied urea to inhibit the development of Septoria nodorum in spring wheat

1991 ◽  
Vol 10 (4) ◽  
pp. 260-264 ◽  
Author(s):  
Jari Peltonen ◽  
Sari Kittilä ◽  
Pirjo Peltonen-Sainio ◽  
Reijo Karjalainen
Keyword(s):  
Spring Wheat ◽  
Septoria Nodorum

Effect of Seed Treatment on Early Season Brown Spot Caused by Septoria glycines of Soybean

2016 ◽  
Vol 17 (4) ◽  
pp. 223-228 ◽  
Author(s):  
Jean C. Batzer ◽  
Yuba R. Kandel ◽  
Carl A. Bradley ◽  
Martin I. Chilvers ◽  
Albert U. Tenuta ◽  
...  
Keyword(s):  
Seed Treatment ◽  
Effective Concentration ◽  
Plant Age ◽  
Brown Spot ◽  
Control Treatment ◽  
Seed Treatments ◽  
Early Season ◽  
Colony Diameter ◽  
Progress Curve ◽  
Mist Chamber

Early season brown spot caused by Septoria glycines was compared in Illinois, Indiana, Iowa, Michigan, and Ontario, Canada, soybean fields planted with differing commercial seed treatments. Seed treatments that included fluopyram significantly reduced brown spot (P < 0.001). A greenhouse mist chamber experiment revealed that fluopyram seed treatment reduced the Area Under Disease Progress Curve of brown spot over a 6-week period (P < 0.001). Brown spot severity was unaffected by plant age at inoculation for the control treatment without fluopyram (P = 0.911); however, severity increased with plant age at inoculation for the fluopyram treatment (P = 0.009). The sensitivity of two S. glycines isolates to fluopyram was assessed by determining the effective concentration required to reduce its colony diameter growth in culture by 50% (EC50). Both isolates had an EC50 of 0.41 μg/ml of fluopyram. These results demonstrate that fluopyram seed treatment is effecttive at controlling early season brown spot in soybean. Accepted for publication 19 September 2016.

Karat winter wheat

1991 ◽  
Vol 71 (1) ◽  
pp. 207-210
Author(s):  
H. G. Nass ◽  
H. W. Johnston ◽  
E. Hansel ◽  
R. Blatt ◽  
C. Caldwell ◽  
...  
Keyword(s):  
Triticum Aestivum ◽  
Powdery Mildew ◽  
Winter Wheat ◽  
Triticum Aestivum L ◽  
Septoria Nodorum ◽  
Bread Making ◽  
Eastern Canada ◽  
Key Words Wheat ◽  
Glume Blotch ◽  
Cultivar Description

Karat is a winter wheat (Triticum aestivum L. em. Thell.) with bread making quality, high grain yield, and adequate straw strength. It is moderately susceptible to powdery mildew (caused by Erysiphe graminis D.C. ex. Merat f. sp. tritici Marchal) and septoria leaf and glume blotch (caused by Septoria nodorum Berk.) and is suited for production in areas of Eastern Canada where winter survival is not a problem. Key words: Wheat (winter), cultivar description

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