scholarly journals Characterization of Streptomyces scabies isolates from potato tubers its pathogenic variations in Rawalpindi District

2014 ◽  
Vol 4 (1) ◽  
pp. 1-6
Author(s):  
S. Shazia ◽  
F. Naz ◽  
A. Rauf ◽  
M. Inam-ul-Haq ◽  
S. Bushra
Keyword(s):  
Solanum Tuberosum L ◽  
Economic Loss ◽  
Streptomyces Scabies ◽  
Potato Tubers ◽  
Yield And Quality ◽  
Isolation And Characterization ◽  
Pathogenic Variation ◽  
Important Disease

Potato (Solanum tuberosum L.) has various biotic constraints in its production due to pest attack. Among these, common scab caused by streptomyces scabies is an important disease in potato which causes economic loss with respect to plant yield and quality of tubers. The present study was conducted to determine the pathogenicity, pathogenic variation, characterization of morphological, physiological and biochemical aspects of Streptomyces associated with potato tubers grown in Rawalpindi district. Severity data and pathogenic variation of disease was studied by using different isolation and characterization techniques.

scholarly journals Effect of Tuber Size and Intra-row Spacing on Yield and Quality of Potato (Solanum tuberosum L.)

2020 ◽  
pp. 30-34
Author(s):  
Dawinder . ◽  
Gurbax Singh ◽  
Amanpreet Singh ◽  
Jagjot Singh
Keyword(s):  
Solanum Tuberosum ◽  
Solanum Tuberosum L ◽  
Tuber Size ◽  
Row Spacing ◽  
Potato Tubers ◽  
Subsequent Growth ◽  
Yield And Quality ◽  
Four Levels ◽  
Plot Design

A study was conducted to determine the effect of tuber size and intra row spacing on potato (Solanum tuberosum L.) yield and subsequent growth in the 2017 production season. The experiment was laid out in a 3x4 combination arranged in a split-plot design with three replications (three levels of tuber size: 20-30 mm, 30-40 mm and 40-50 mm and four levels of intra row spacing's: 8, 12, 16 and 20 cm). For the optimum emergence and successful growth of potato tubers for processable yield, a size of 40-50 mm and spacing of 20 cm between plants, respectively were identified as the best treatments to be used in the study area.

Isolation and characterization of blackspot pigments from potato tubers

1996 ◽  
Vol 42 (4) ◽  
pp. 941-947 ◽  
Author(s):  
Lucas H. Stevens ◽  
Evert Davelaar
Keyword(s):  
Potato Tubers ◽  
Isolation And Characterization

scholarly journals EFFECT OF BIOFERTILIZER AND COMPOST ON NITRATE STATUS, YIELD AND QUALITY OF POTATO TUBER UNDER NEWLY RECLAIMED SANDY SOIL

AGROFOR ◽  
2018 ◽  
Vol 3 (1) ◽  
Author(s):  
S.F. EL-SAYED ◽  
A.A. GAHRIB ◽  
Rasha R. EID
Keyword(s):  
Sandy Soil ◽  
Control Treatment ◽  
High Yield ◽  
Potato Tubers ◽  
Treatment Control ◽  
Mineral Fertilization ◽  
Marketable Yield ◽  
Yield And Quality ◽  
Compost Treatment

This investigation was carried out during the two summer seasons of 2015 and2016 in sandy soil on potato culitvar "Sante" to study the effect of using 100%compost (15 t/fed.) and 50% compost + nitrogen fixing bacteria (Azotobacter, andPseudomonas alone or together) on potato yield and quality as compared to theconventional mineral fertilization (120-75-150 kg/fed. NPK + 5 toncompost/fed.(control)). No significant differences in tubers yield/fed. were detectedbetween mineral fertilization (control) and using 100% compost (15t/fed).However, control treatment significantly produced a high yield per feddan,more than using 50% compost + any biofertilizer treatment.Using composttreatment at 15 t/fed.execeed all biofertilizer treatments in marketable yield in bothseasons, but without significant differences as compared with mineral fertilization(control).No significant differences in tuber dray matter and content of starch intuber were found between using compost treatment at 15 ton/fed. and mineralfertilization treatment (control)in both seasons. Nevertheless, application of 50%compost+ 4 applications of Azotobacter and Pseudomonas had the highest tuberconcentrations of starch and nitrogen with significant differences as compared withthe mineral fertilization.Using50% compost + 4 applications of Azotobacter orPseudomonas or both (Azotobacter + Pseudomonas )and application of 100%compost caused producing potato tubers with the lowest concentration of nitratewith significant differences as compared with the mineral fertilization. Nosignificant differences were detected between mineral and organic fertilizersconcerning P and K concentrations in tubers.

Analysis of Bio-Oil Produced by Co-Pyrolysis of Mahua Seed and Polystyrene

2015 ◽  
Vol 787 ◽  
pp. 771-775
Author(s):  
Debalaxmi Pradhan ◽  
R.K. Singh
Keyword(s):  
Heating Rate ◽  
Fossil Fuel ◽  
Synergetic Effect ◽  
Blend Ratio ◽  
Yield And Quality ◽  
Bio Oil ◽  
Quality Of Products ◽  
Temperature Heating

TheProduction of biofuel from biomass sources is believed to reduce the reliance of fossil fuel and its cost. This investigation was aimed to produce and characterize the bio-oil obtained from co-pyrolysis. Two different feed stocks were used for co-pyrolysis; one is Mahua seed (MS) and the other one is Polystyrene (PS). The effect in addition of plastic to biomass in pyrolysis process were investigated on the yield and quality of products. Experiments were conducted in a semi-batch pyrolysis reactor under various parameters of temperature, heating rate and blending ratio. The results indicated that a temperature of 525 °C, and blend ratio of 1:1is maximumwith a heating rate of 20 °C/min. The yield of bio-oil obtained from the co-pyrolysis was found to be approximately 71%, which was higher about 22% than that of yield obtained from pyrolysis of Mahua seed (MS) alone. Further the bio-oil was characterized using different spectroscopic and chromatographic analyses. The analysis of the results for characterization of bio-oil indicated that the synergetic effect increased the bio-oil yield and its quality.

scholarly journals Assessment of Toxigenic Fusarium Species and Their Mycotoxins in Brewing Barley Grains

Toxins ◽  
2019 ◽  
Vol 11 (1) ◽  
pp. 31 ◽  
Author(s):  
Karim Piacentini ◽  
Liliana Rocha ◽  
Geovana Savi ◽  
Lorena Carnielli-Queiroz ◽  
Livia De Carvalho Fontes ◽  
...  
Keyword(s):  
Species Complex ◽  
Fusarium Species ◽  
Plant Diseases ◽  
Phylogenetic Study ◽  
Brewing Industry ◽  
Yield And Quality ◽  
High Incidence ◽  
Barley Grains

Fusarium species threaten yield and quality of cereals worldwide due to their ability to produce mycotoxins and cause plant diseases. Trichothecenes and zearalenone are the most economically significant mycotoxins and are of particular concern in barley, maize and wheat. For this reason, the aim of this study was to characterize the Fusarium isolates from brewing barley and to assess deoxynivalenol and zearalenone contamination in grains. Characterization of the Fusarium strains was carried out by the phylogeny based on two loci (EF-1α and RPB2). Mycotoxin detection and quantification were performed by LC-MS. The results show that Fusarium was the predominant genus. Phylogenetic study demonstrated that the majority of the strains clustered within the Fusarium sambucinum species complex followed by the Fusarium tricinctum species complex. The results revealed high incidence of deoxynivalenol (DON) and zearalenone (ZEA) contamination (90.6% and 87.5%, respectively). It was observed that 86% of the samples contaminated with ZEA were above the limits set by the EU and Brazilian regulations. These results may highlight the importance of controlling Fusarium toxins in barley, mainly because of its use in the brewing industry and the resistance of various mycotoxins to food processing treatments.

Effects of Planting on Different Sides of the Ridge on Emergence, Plant Growth, Yield and Quality of Potato (Solanum tuberosum) in the Sudan

1989 ◽  
Vol 25 (3) ◽  
pp. 409-415 ◽  
Author(s):  
A. M. Ali
Keyword(s):  
Solanum Tuberosum ◽  
Plant Growth ◽  
Soil Temperature ◽  
Growth Yield ◽  
Potato Tubers ◽  
Yield And Quality ◽  
Southern Side ◽  
Northern Side

SUMMARYThe effects of planting potato tubers on four different sides of two ridge orientations was investigated. Soil temperature was coolest on the northern side, followed by the western, eastern and southern sides. Fifty percent emergence took place in 24, 42 and 49 days for tubers planted on the northern, western and eastern sides, respectively. Only 22% of tubers planted on the southern side emerged. The best yield and quality was obtained by planting on the northern side, followed successively by the eastern, western and southern sides of the ridge.

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