Relationship Between Anthracnose Leaf Blight and Losses in Grain Yield of Sorghum

Plant Disease ◽  
1987 ◽  
Vol 71 (9) ◽  
pp. 803 ◽  
Author(s):  
M. E. K. Ali
Keyword(s):  
Grain Yield ◽  
Leaf Blight ◽  
Anthracnose Leaf Blight

scholarly journals Field efficacy of formulation of fungal bioagents against bacterial leaf blight of rice caused by Xanthomonas oryzae pv. oryzae (Uyeda and Ishiyama) Dowson

2013 ◽  
Vol 5 (2) ◽  
pp. 423-426 ◽  
Author(s):  
Gokil Prasad Gangwar
Keyword(s):  
Grain Yield ◽  
Disease Severity ◽  
Leaf Blight ◽  
Bacterial Leaf Blight ◽  
Comparative Efficacy ◽  
Trichoderma Spp ◽  
Maximum Increase ◽  
Kharif Season ◽  
Field Efficacy ◽  
Different Sources

In the present study, Trichoderma harzianum, T. hamatum, T. virens and three isolates of Trichoderma spp. were evaluated for their comparative efficacy against bacterial leaf blight of rice, under field conditions. All the bioagent formulations were significantly effective in reducing disease severity over check during Kharif season 2006 and 2007. T. harzianum was found to be most effective and resulted 48.26 and 59.22 % reduction in disease severity during Kharif season 2006 and 2007, respectively. Maximum increase in grain yield (16.21%) was recorded with T. harzianum followed by isolate 40 (14.58%), during Kharif season 2006. Whereas during Kharif season 2007, maximum increase in grain yield (18.95%) was recorded with T. harzianum which is followed by T. virens (14.65%) and isolate 40 (12.57 %). Present study revealed that T. harzianum (isolated from rice phylloplane) was found to be most effective in reducing disease severity and increasing grain yield as compared to other isolates obtained from different sources.

scholarly journals Management of Leaf Blight (Bipolaris sorokiniana) Disease of Wheat with Cultural Practices

2009 ◽  
Vol 7 ◽  
pp. 63-69
Author(s):  
PCP Chaurasia ◽  
E Duveiller
Keyword(s):  
Grain Yield ◽  
Plant Height ◽  
Cultural Practices ◽  
Flag Leaf ◽  
Kernel Weight ◽  
Leaf Blight ◽  
Thousand Kernel Weight ◽  
Leaf Infection ◽  
Higher Doses ◽  
Late Sowing

An experiment was conducted at agronomy farm of Agriculture research Station, Tarahara,Nepal for three consecutive years viz 2000/2001,2001/2002, and 2002/2003 to evaluate theeffects of different cultural practices on leaf blight diseases of wheat caused by Bipolarissorokiniana under terai conditions. The experiment was conducted in factorial RandomizedComplete Block Design with four replications. Four factors, two wheat verities RR-21 andNepal 297,two number of irrigations (two and three irrigations), two doses of Nitrogen fertilizerviz. 60kg N/ha and 120 kg N/ha and two dates of sowing of wheat were examined. Differentyield components, grain yield (kg/plot) and disease severity were recorded to judge the effects ofthese factors on severity of leaf blight of wheat. Nepal Line 297 had significantly less AUDPCbased on flag leaf infection and whole plan as compared to RR-21. Number of irrigations had nosignificant effect on AUDPC, as there was frequent rain during experimental period. Doses ofNitrogen fertilizer had significant effect on AUDPC based on flag leaf infection. It was higher incase of 60 kg N/ha. The third week of November sowing of wheat had lower value of AUDPCas compared to December sowing. Plant height, panicle lengths were highly significantly higherin case of RR-21 as compared to Nepal-297. Thousand kernel weight, and grain yield kg/ha weresignificantly higher in Nepal-297. All agronomic parameters except thousand kernel weight andnumber of tillers/plan were significantly higher in 120kg N/ha. The third week of Novembersowing of wheat had less plant height and panicle length, higher thousand kernel weight andmore grain yield. Leaf blight severity was highly significantly less in case of Nepal-297. Dosesof Nitrogen fertilizer had significant effect on plant height, panicle length, thousand kernelweight, percentage flag leaf infection and AUDPC based on flag leaf infection. Based on theresults of three years of experimentations, it can be concluded that Nepal-297 had less disease,number of irrigations had no effect on disease severity, higher doses of nitrogen fertilizer hadless flag infection and late sowing of wheat also had less disease. Numbers of irrigation's effectswere inconclusive as there were frequent rains during experimentation period. Based on aboveconclusion, it is recommended that growing wheat verity like Nepal-297, use of higher doses ofnitrogen fertilizer and sowing of wheat / first week of Dec help in minimizing the severity of leafblight. However late sowing had lowered grain yield.Key words: AUDPC; culture practices; disease management; leaf blightDOI: 10.3126/narj.v7i0.1870Nepal Agriculture Research Journal Vol.7 2006 pp.63-69

Improving Corn Population for Grain Yield and Resistance to Leaf Blight and Stalk Rot 1

Crop Science ◽  
1980 ◽  
Vol 20 (2) ◽  
pp. 247-251 ◽  
Author(s):  
J. W. Miles ◽  
J. W. Dudley ◽  
D. G. White ◽  
R. J. Lambert
Keyword(s):  
Grain Yield ◽  
Leaf Blight ◽  
Stalk Rot

scholarly journals Evaluation of Yield, Reaction to Diseases, and Grain Physical Attributes of Some Introduced Rice Hybrids in Ghana

2019 ◽  
Vol 2019 ◽  
pp. 1-8
Author(s):  
Samuel Oppong Abebrese ◽  
Alex Yeboah ◽  
Wilson Dogbe ◽  
Paul Kofi Ayirebi Dartey ◽  
Richard Akromah ◽  
...  
Keyword(s):  
Grain Yield ◽  
Yield Components ◽  
Hybrid Rice ◽  
Block Design ◽  
Leaf Blight ◽  
Rice Production ◽  
Bacterial Leaf Blight ◽  
Yield Potential ◽  
Randomized Complete Block Design ◽  
Physical Attributes

Hybrid rice technology is one of the promising, sustainable, and proven technologies for increasing rice production and productivity with a yield advantage of 15–30% over modern inbred varieties. The potential of hybrid rice has so far not been exploited in Ghana. This study was undertaken to evaluate the yield potential, reaction to diseases, and physical grain attributes of some introduced hybrids. The trials were laid out in a randomized complete block design (RCBD) with three replicates across three locations. Data were taken on grain yield, yield components, reaction to diseases, and grain physical characteristics. Four promising hybrids (SWARNA 2, ARGH 1501, ARGH 1502, and ARGH 1503) with a mean yield advantage of 15–20.8% over the best inbred check “AgraRice” were identified. With few exceptions, the hybrids were broadly adapted and had adequate resistance to blast and bacterial leaf blight. Most of the test hybrids had long slender grains which make them acceptable to the Ghanaian market but lacked aroma.

Effect of potash fertilization on Helminthosporium leaf blight severity in wheat, and associated increases in grain yield and kernel weight

2005 ◽  
Vol 93 (2-3) ◽  
pp. 142-150 ◽  
Author(s):  
Sarala Sharma ◽  
Etienne Duveiller ◽  
Roshan Basnet ◽  
Chandra B. Karki ◽  
Ram C. Sharma
Keyword(s):  
Grain Yield ◽  
Kernel Weight ◽  
Leaf Blight ◽  
Helminthosporium Leaf Blight

scholarly journals Growth promotion of transplanted rice plant by bioagents effective against bacterial leaf blight disease of rice under glasshouse conditions

2014 ◽  
Vol 6 (1) ◽  
pp. 234-238
Author(s):  
Gokil Prasad Gangwar ◽  
A. P. Sinha
Keyword(s):  
Grain Yield ◽  
Growth Promotion ◽  
Foliar Spray ◽  
Leaf Blight ◽  
Bacterial Leaf Blight ◽  
Total Phenolic ◽  
Root Weight ◽  
Transplanted Rice ◽  
Untreated Check ◽  
Blight Disease

The experiment was conducted to evaluate growth promotion of transplanted rice by fungal and bacterial bioagents effective against bacterial leaf blight of rice, under glasshouse conditions. Bioagent formulations (PBA -1, PBA -2, FLP 88, Pf 83, Isolate 40 and T. harzianum) were applied as seed treatment, seedling root dip and foliar spray and compared with chemical treatment and untreated check. All bioagent formulations were significantly effective in increasing number of tillers per hill, root length, total phenolic content in rice leaves, fresh and dry root weight, fresh and dry shoot weight, flag leaf area, grain yield and 1000 grain weight over check. Present study revealed that potential fungal and bacterial bioagents effective against bacterial leaf blight disease of rice, exhibited plant growth promoting activities and resulted 22.38 to 32.08 % increase in grain yield over untreated check, even if there is no disease.

scholarly journals Genetic variability to improve yield and resistance to bacterial leaf blight in rice

2018 ◽  
Vol 44 (4) ◽  
pp. 581-589
Author(s):  
AK Singh ◽  
RK Singh ◽  
Sunil Kumar ◽  
M Arya ◽  
PK Singh
Keyword(s):  
Genetic Variability ◽  
Grain Yield ◽  
Plant Height ◽  
Leaf Blight ◽  
Test Weight ◽  
Bacterial Leaf Blight ◽  
Flowering Plant ◽  
Panicle Length ◽  
Weight Number ◽  
Panicle Weight

One hundred F2 and F3 single plant progenies along with their parents and the infector rows were evaluated for 13 quantitative traits to assess the genetic variability, heritability, associations and estimation of number of genes for bacterial leaf blight resistance and yield related traits. In both F2 and F3, a wide range of variability was present for all the traits, indicating considerable scope for selection. High heritability accompanied with high genetic advance was observed for plant height, panicle length, panicle weight, number of effective tillers per plant and grain yield per plant. Positive and significant correlation were observed between grain yield per plant with days to 50% flowering, plant height, panicle length, panicle weight, number of effective tillers per plant, test weight and flag leaf length in either one of the generation or in combination of both F2 and F3. Path-coefficients analysis showed that plant height, panicle length and test weight had high direct positive effect in both the F2 and F3. The estimated number of gene(s) in the segregating generations for bacterial leaf blight was 2.14 in the F2 and 0.92 in the F3 revealed that two genes were involved in the inheritance of resistance to bacterial leaf blight in F2, while only one gene in F3 due to dominance effect.

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