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Hooda K.S.,Maize Research Institute Zemun Polje | Khokhar M.K.,Campus Management | Shekhar M.,Maize Research Institute Zemun Polje | Karjagi C.G.,Maize Research Institute Zemun Polje | And 5 more authors.
Journal of Plant Diseases and Protection | Year: 2017

Turcicum leaf blight of maize caused by the fungus Setosphaeria turcica is a serious foliar disease of maize distributed widely throughout the world and causing significant yield losses. The disease is more prevalent in humid weather with temperature between 20–28 °C and causes small cigar-shaped lesions to complete destruction of the foliage. Though there are several management practices available, identification and deployment of host plant resistance is a pragmatic approach to control the disease. However, qualitative resistance is unstable and breaks down easily by emergence of new races of the pathogen in maize necessitating the development of durable TLB resistant cultivars. Application of modern molecular tools and availability of high-density molecular marker data are expected to accelerate efforts to develop resistant hybrids. This review provides a focuses on current status, and future research needs especially biological control and sustainable integrated management strategies of TLB. © 2016, Deutsche Phythomedizinische Gesellschaft.


Ramesh,Agricultural Research Station | Muniswamy S.,Agricultural Research Station | Yamanura,University of Agriculture science | Praveenkumar B.,University of Agriculture science | Bharatthi,Agricultural Research Station
Electronic Journal of Plant Breeding | Year: 2017

A study was conducted to examine the stability and path analysis of the twenty advanced genotypes of pigeonpea including check WRP-1, during kharif-2012, 2013 and 2014 under irrigated condition at the Agricultural Research Station, Kalaburagi. Pod length (0.378, 1.612), pod bearing length (0.493, 1.043), secondary branches (0.314, 0.935) and number of pods per plant (0.362, 0.539)had the highest positive direct effect on grain yield both at genotypic and phenotypic level. For maximizing the grain yield per plant emphasis should be given in selection of such characters for further improvement in pigeonpea. Highly significant differences among varieties were observed for all the characters except primary branches. The variance due to genotype x environmental (G x E) interaction found to be significant for days to flower initiation, plant height number of seeds per pod and yield per plant. All the traits under the study except for 100 seed weight showed significant differences in different environment. The variance due to pooled deviation was highly significant for all the traits except for primary branches and number of seeds per pod which reflect considerable variability in the material. Out of 20 genotypes studied four entries viz., RVK-285, AKT-9913, JKM-189 and ICP-13579 were consistent and high yielding compared to local check for irrigated conditions.


Salimath P.M.,University of Agriculture science | Wali M.C.,University of Agricultural Sciences, Dharwad
Indian Journal of Genetics and Plant Breeding | Year: 2015

In AMMI analysis environment main effect and genotype x location interaction were found significant. Significant differences in maize hybrids were observed for grain yield among the locations over the years both under stress and non-stress conditions. Among the four interaction principal component axes (IPCA) of GGE biplot, first two IPCA were significant explaining 75.89% variation. Hybrid, KDMI-15 x NEI-9202-B was found superior among all the hybrids over checks over all the locations. Other hybrids viz., CM-111 x HYD SEL-15 and CI-4 x NEI-9202-B exhibited almost no interaction with the environments convincing the reliability of their performance. The hybrids viz., KDMI-15 x NEI-9208-B, CM-111 x HYD SEL-17, 900M, CML-446 x HYD SEL-4, CI-4 x HYD SEL-17, HYD SEL-7 x KDMI-15 and HYD SEL-15 x HYD SEL-17 were most responsive. © 2015, Indian Society of Genetics and Plant Breeding. All rights reserved.


Kalmath B.,University of Agriculture science | Venkateshalu,University of Agriculture science | Nadagouda S.,University of Agriculture science | Jukthihiremath S.,KSWU | Meenakshi B.C.,UAS
Journal of Pure and Applied Microbiology | Year: 2012

An investigation was conducted to study the diversity of entomopathogenic bacteria Bacillus thuringiensis, in rice ecosystem in UKP area Karnataka, India. Survey was conducted to collect soils from different places and Bacillus thuringiensis were isolated. Totally 72 B. thuringiensis isolates were collected from the survey. The cell sizes of the B.thuringiensis isolates varies from 1.45x0.83 μm to 3.49x0.63 μm, where as endospore size varies from 0.83-0.66 μm to 1.66-0.66 μm. Among collected bacteria 64 % of the isolates produced bipyramidal crystal shape and 3 % produced triangular shape, 9 % produced bipyramidal and triangular shape, 9 % produced spherical, 2 % produced ovoid and 2 % produced triangular and bipyramidal shape. The pathogenicity of isolates against 2 nd instars Diamond back moth larvae showed, mortality ranged from 0 to 100 per cent. Bioassay showed that LC50 value was minimum in Thanegundi isolate (1.9×10 -4) followed by Karkalli, Yevur and Gogi isolates.


Mane R.,University of Agriculture science | Sridevi O.,University of Agriculture science | Salimath P.M.,University of Agriculture science | Deshpande S.K.,University of Agriculture science | And 2 more authors.
Indian Journal of Agricultural Sciences | Year: 2010

A study was carried out during winter (rabi) season of 2008 for developing new cultivars and in choosing suitable cultivars to grow in specific location on 16 tomato (Solanum lycopersicum Mill.) genotypes along with one check across 3 different locations, namely Dharwad, Saidapur and Belvatagi. Genotype x environment interaction was significant for most of the yield related traits suggesting that genotypes interacted significantly with environments. The difference in stability was due to both the linear response of genotypes to environment and deviation from the linear response. None of the genotypes was stable for all the characters and stability for one character was independent of stability for other characters. The genotypes 'TS 1', 'TS 6', 'TS 11, 'TS 14', 'TS 15' and 'TS 16' were found to possess stability for yield related traits. The analysis of quality parameters for all these genotypes revealed their superiority over check cultivar 'L 15' ('Megha').


Kalleshwaraswamy C.M.,University of Agriculture and Horticultural science | Murthy M.S.,University of Agriculture science | Viraktamath C.A.,University of Agricultural Sciences, Bangalore | Kumar N.K.K.,Indian Council of Agricultural Research
Florida Entomologist | Year: 2015

In Jan and Feb 2015, the tomato leafminer, Tuta absoluta (Meyrick) (Lepidoptera: Gelechiidae), was found to have entered and established in the Malnad and Hyderabad-Karnataka Regions of Karnataka, India, where it is infesting tomato and potato crops. To our knowledge, this is the first record of T. absoluta in these regions of India. The incidence recorded appears to be comparatively small at some locations, but this damaging insect may spread to other regions of India and cause serious crop loss in the future. Probably, the introduced populations are resistant to various insecticides, and management of insecticideresistant populations poses additional problems. © 2015, BioOne. All rights reserved.


Hadadinejad M.,University of Agriculture Science | Salim Pour A.,University of Science and Culture | Nosrati S.Z.,Academic Center for Education | Nosrati S.Z.,University of Tehran | And 2 more authors.
Vitis - Journal of Grapevine Research | Year: 2014

Grapes are an important horticultural crop that is popularly consumed in a variety of different forms; the fruit is eaten in at its immature stage, as ripe fruit and dried as raisins and vine leaves are also consumed. Therefore any research on ways to improve production of Iranian grapes in terms of quality and quantity is valuable. The main purpose of this study was to test the use of Phenyl Phetalamic Acid (PPA) to improve fruit set and quality. The experiment was designed as a factorial for four grapevine cultivars; 'Razeghi', 'Askari', 'Sefidaly' and 'Rishbaba' and three concentrations of PPA(0,500,1000 mg-L -1). Treatments were arranged in a completely randomized design with three replications. The experiment was done in the Kashmar vineyard (Khorasan Razavi province) during 2010 spring. PPA treatment was applied by foliar spraying at the stage of 50 % anthesis. Results showed that PPA levels had a significant effect on evaluated cluster traits (weight, length and number) and berry (number, weight, length and diameter). Fruit set index (number of berries per cluster) was 263.11 for 'Sefidaly' followed by 113,109.89 and 76.11 for 'Askari', 'Razeghi' and 'Rishbaba', respectively. 'Askari' and 'Razeghi' cultivars showed similar and insignificant reactions but their difference was significant compared to 'Rishbaba'. The effect was significant for interactions of traits for cluster, berry and seed except for number of berries per cluster. Based on these results, cluster characters were significantly and positively affected by PPA treatment at the concentration of 1000 mg-L-1. This concentration increased fruit set by 26.2 % compared to the control in all cultivars except for Askari. The PPA concentration 500 mg-L-1, observed as the most effective treatment for improved berry characters, provided its non-significant difference with 1000 mg-L-1. Seed number per berry decreased significantly in 'Askari' and 'Rishbaba' at 500 mg-L -1, which was considered positive in terms of quality. In summary, results determined that PPA had a positive effect on fruit as an auxin synergist. These improved berry characteristics are hypothesized to occur through a decrease in the dominance of apical buds that would allow more metabolites to be directed to development of fruit clusters, although further research is required.


Kiran Kumar R.,Agriculture Extension Education Center | Bhat N.S.,University of Agriculture science
Pestology | Year: 2012

One hundred and forty four germaplasms of sunflower (Helianthus annuus L) were screened under field condition. The experiment was conducted at GKVK ,UAS, Bangalore during the year 2007-08. The trial was conducted for identifying the resistant lines against Ieafhopper Amrasca biguttula biguttula (Ishida). Among the one hundred and fourty four sunflower germplasm lines Acc No 1223, 1210, 1198, 1149, 89-B, Ace No 256, and HAM 176 were comparatively superior to the check Morden with respect to their resistance to Ieafhopper. The entries of HAM series which were obtained by crossing Morden and Helianthus argophyllus that were having glabrous and thick leaves were promising against Ieafhopper.


Govindappa M.,Texas A&M University | Lokesh S.,University of Mysore | Rai V.R.,University of Mysore | Naik V.R.,University of Agriculture science | Raju S.G.,University of Agriculture science
Archives of Phytopathology and Plant Protection | Year: 2010

Three biocontrol agents such as Trichoderma harizianum, Pseudomonas fluorescens and Bacillus subtilis were isolated from safflower rhizosphere soil and tested individually for their effectiveness in controlling root-rot of safflower. Talc based formulations were prepared and treated the seeds at different concentrations for assessing their ability to induce plant growth and in turn control root-rot disease. Among bioagents, P. fluorescens and T. harzianum (10g/kg) proved to be effective in controlling disease under laboratory, greenhouse and field conditions. The efficacy of these biocontrol agents are equivalent to the standard fungicide Bavistin (Carbedazim). Other than direct action of these biocontrol agents triggered defense related enzymes involved in phenyl proponoid pathways and phenols. Higher activity of peroxidase, phenylalanine ammonia-lyase, chitinase, polyphenol oxidase and β-1,3-glucanase was observed in P. fluorescens and T. harzianum treated safflower plants after challenge inoculation with M. phaseolina. Seed treatment with these biocontrol agents enhanced the seed germination and growth parameters against root-rot disease and they also induced systemic resistance and/or physiological changes leading to plant defense mechanisms.


Elangovan D.,Michigan State University | Nidoni U.,University of Agriculture Science | Yuzay I.E.,Michigan State University | Selke S.E.M.,Michigan State University | Auras R.,Michigan State University
Industrial and Engineering Chemistry Research | Year: 2011

Biodegradable multifunctional polymeric membranes based on poly(L-lactic acid), PLLA, and metal-organic framework compounds (MOFs) were developed. PLLA with and without the addition of 5 wt % MOF was melt compounded in a microextruder, and the solubility parameters, water sorption isotherm, and permeability coefficients to oxygen, carbon dioxide, water, ethyl acetate, hexane, and cyclohexane were determined. The sorption capacity of the PLLA-MOFcomposite films increased up to 2-fold at each relative humidity to which it was exposed when compared with the PLLA films. The sorption and desorption curves of the PLLA-MOF films show hysteresis. The presence of MOF in the composite films did not significantly modify the permeability coefficients of the PLLA-MOF films. © 2011 American Chemical Society.

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