scholarly journals Assessment of Inter-varietal Cross Lines of Gladiolus on Vegetative and Floral Traits for Selection and Promotion in Nepal

2021 ◽  
Vol 15 ◽  
pp. 1-15
Author(s):  
Tul Bahadur Poon ◽  
Asmita Khanal ◽  
Sandip Timilsina ◽  
Anuja Rijal
Keyword(s):  
Plant Height ◽  
Agricultural Research ◽  
Spike Length ◽  
Floral Traits ◽  
Research Station ◽  
Preliminary Trial ◽  
Agricultural Research Station ◽  
Spike Number

Artificial crossing between species and varieties has been effective in producing new gladiolus cultivar with desirable traits. The seeds obtained from the total of twelve inter-varietal cross lines were raised in nurseries in 2013. The corms and cormels were selected yearly from the first phase to the fourth phase of selection. Forty seven inter-varietal cross lines and one check genotype were assessed in preliminary non-replicated trial in 2017 in the field of Regional Agricultural Research Station, Lumle, Nepal. A total of twenty five inter-varietal cross lines of gladiolus was selected, and assessed to develop new productive and attractive varieties of gladiolus on the basis of sixteen traits: the first spike emergence, complete spike emergence, the first  floret loosening,  maximum number of floret opening at a time, floret diameter, number of florets /spike, days to the seventh floret wilting, flower life, plant height, spike length, rachis length, number of spikes/ mother corm, number of marketable spikes /mother corm, number of filled capsules/spike, number of unfilled capsules/spike and total number of capsules/spike. Forty six inter-varietal cross lines were selectively reduced to twenty five inter-varietal cross lines after they had been assessed in the preliminary trial. Eventually ten cross lines: HRSDG-013-2.17(A), HRSDG-013-7.4(B), HRSDG-013-7.8(A), HRSDG-013-7.8(B), HRSDG-013-8.5(A), HRSDG-013-8.16(A), HRSDG-013-9.12(A-2), HRSDG-013-10.24, HRSDG-013-11.7(B) and HRSDG-013-11.17(B-2) are likely to be promoted for replicated trial so as to develop new desirable varieties in future.

scholarly journals Management of Leaf Blight of Garlic with Fungicides in Central Tarai of Nepal

2014 ◽  
Vol 8 ◽  
pp. 63-66
Author(s):  
Prem C.P. Chaurasia ◽  
Jang B. Prasad ◽  
Aanandi Mandal
Keyword(s):  
Plant Height ◽  
Agricultural Research ◽  
Block Design ◽  
Leaf Blight ◽  
Research Station ◽  
Insignificant Effect ◽  
Agricultural Research Station ◽  
Randomized Block Design ◽  
Bulb Yield

Management of purple blotch in garlic was carried out in 2005/06 and 2006/07 at horticultural farm of Regional Agricultural Research Station, Parwanipur in Complete Randomized Block Design with three replications. First year’s results indicated insignificant effect of fungicides on Percentage Disease Intensity (PDI) of purple blotch disease of garlic as number of sprays used seemed to be inadequate. Second year’s result revealed that two sprays of Bavistin @ 0.2% had lowest PDI value but at par to other different number of sprays of different fungicides except no spray of fungicide. Bulb yield was highest in two sprays of Dithane M-45 @ 0.3% followed by two sprays of Krinoxyl @ 0.15%, three sprays of Blitox-50 @ 0.3%. Plant height was insignificant and highest bulb weight was found with three sprays of Blitox-50 followed by two sprays of Bavistin. Two year’s combined results indicated that two sprays of Bavistin @ 0.2% had lowest PDI value and all others PDI values were at par except control. The highest bulb yield was given by two sprays of Dithane M-45 followed by three sprays of Bavistin. Plant height and bulb weight were insignificant. It can be recommended that purple blotch disease can be managed by spraying Bavistin @ 0.2% thrice at 15 days interval or any other tested fungicides to have less disease, higher bulb yield and more economic return.Nepal Agric. Res. J. Vol. 8, 2007, pp. 63-66DOI: http://dx.doi.org/10.3126/narj.v8i0.11582 

scholarly journals Genotype x environment interaction analysis of Triticum aestivum L. for yield components

2020 ◽  
Vol 12 (1) ◽  
pp. 6-12
Author(s):  
İ. Öztürk ◽  
K.Z. Korkut
Keyword(s):  
Grain Yield ◽  
Plant Height ◽  
Agricultural Research ◽  
Interaction Analysis ◽  
Wheat Yield ◽  
Stress Factors ◽  
Spike Length ◽  
Environment Interaction ◽  
Spike Number ◽  
Biological Yield

Abstract. Genotypes performance changes due to environmental pressures or stresses and differences in their ability to adapt to the stress factors. Drought is the main abiotic stress factor affecting bread wheat yield and yield component. The experiment was carried out in the experimental field of Trakia Agricultural Research Institute, Edirne (Turkey), in 2008-2009 and 2009-2010, and 15 wheat genotypes were planted in RCBD in a split-plot with three replications. The main plots were assigned to five moisture regimes, which included 3 drought stress environments, one non-stress and one non-treatment environment. Principal component analysis (PCA) and cluster analysis were used to determine genotypes environment interaction. Grain yield, biological yield, harvest index, spike number per square meter, kernel and spikelet number per spike, length of spike and plant height were investigated. PCA indicated that the first (46.31%) and second (25.32%) components justified 71.63% of variations in the investigated yield parameters of the genotypes. Based on GGE biplot results, Kate A-1 and Tekirdağ genotypes were determined as the most stable cultivars for grain yield. Mean values of the genotypes varied between 3830-6583 kg ha-1 for grain yield, 20170-25394 kg ha-1 for biological yield, 68.6-110.9cm for plant height, 30.2-38.3 for kernel number in spike, 328.8-486.6 for spike number per square meter and 6.57-9.17cm for spike length. Clusters I and II were more clearly separated. In the first group of clusters 6 genotypes are located including one line and five cultivars. In the second group of clusters 8 genotypes are located including five advanced lines and four cultivars.

scholarly journals Varietal Improvement of Wheat for Eastern Terai of Nepal

2017 ◽  
Vol 4 (4) ◽  
pp. 519-524
Author(s):  
Hari Kumar Prasai
Keyword(s):  
Grain Yield ◽  
Plant Height ◽  
Agricultural Research ◽  
Research Station ◽  
Combined Analysis ◽  
Agricultural Research Station ◽  
Days To Heading ◽  
Check Variety ◽  
Varietal Improvement

The regional varietal experiments of wheat were composed by selecting promising genotypes from coordinated varietal trial. Both early and late sown experiments of wheat regional varietal trial (RVT) were seeded in Regional Agricultural Research Station, Tarahara, Sunsari, Nepal in 2014 and 2015. Late sown experiment was seeded after 15 days of early seeding experiment to identify suitable genotypes for delay seeding condition. Amongst the tested genotypes in RVT early of 2014 and 2015, the highest grain yield was produced by BL 3555 (3351 kg/ha) and BL 4018 (3309 kg/ha). Similarly BL 4012, BL 3978, BL 3264 and BL 4406 genotypes also recorded 12-18 percent higher grain yield than the yield of standard check variety, Aditya. All tested characters except spikes/m2 included in over year analysis of RVT early was found significantly different due to genotypes. Similarly out of the tested genotypes in RVT (late) of 2014 and 2015, NL 1177 (2933 kg/ha) and BL 3555 (2764 kg/ha) were found high yielding genotypes in combined analysis over year and grain yield of other tested genotypes was observed at par with check variety.  Days to heading, maturity, plant height and yrain yield of RVT (late sown) experiment were observed significantly different due to genotypes in over year analysis.Int J Appl Sci Biotechnol, Vol 4(4): 519-524

Effect of intercrops on growth and yield of turmeric (Curcuma longa L.)

2017 ◽  
Vol 26 (1) ◽  
pp. 51
Author(s):  
R Chitra, P Hemalatha
Keyword(s):  
Short Duration ◽  
Agricultural Research ◽  
Curcuma Longa ◽  
Growth And Yield ◽  
Research Station ◽  
Initial Growth ◽  
Agricultural Research Station

The initial growth of turmeric is rather slow and takes about 4-5 months to cover the inter space. Therefore, the available space between the rows of turmeric could be effectively utilized by growing short duration crops like, vegetables, cereals etc. Hence, it is worthwhile to explore the possibilities of growing compatible crops with turmeric. With this background the experiment on effect of intercrops on growth and yield of turmeric was conducted at Agricultural Research Station, Bhavanisagar. Among the different intercrops, turmeric with cowpea recorded the maximum fresh rhizome yield per hectare (30.78 t ha-1) while turmeric + bhendi registered the maximum B:C ratio (2.68:1). Monocropping of turmeric recorded the lowest B:C ratio (1.67:1) among all the treatments.  

Influence of sowing dates on the incidence of powdery mildew of chilli

2017 ◽  
Vol 4 (2) ◽  
Author(s):  
SUDHEENDRA A. ASHTAPUTRE
Keyword(s):  
Powdery Mildew ◽  
Field Experiment ◽  
Disease Severity ◽  
Agricultural Research ◽  
Time Interval ◽  
Research Station ◽  
Inoculum Potential ◽  
Weather Factors ◽  
Agricultural Research Station ◽  
Sowing Dates

A field experiment was conducted during kharif, 2005 at Agricultural Research station, Devihosur, Haveri, Karnataka to assess the progress of powdery mildew at different time interval of sowing dates. Totally 20 different dates of sowings were imposed in the experiment at an interval of 10 days. The crop sown on last week of May to mid of June recorded minimum disease severity compared to rest of the date of sowings. This clearly indicated that crop sown during this period suffers less, which may be due to low inoculum potential, whereas late sown crop suffers more because of the readily available inoculum in the early sown crops. Low disease severity in last week of May to mid of June sowing may be attributed to the non-congenial weather factors for the development of the disease.

scholarly journals Validation of Target Yield based Fertilizer Prescription for Rabi Castor in Alfisol

2020 ◽  
pp. 166-173
Author(s):  
Kasthuri Rajamani ◽  
A. Madhavi ◽  
T. Srijaya ◽  
P. Surendra Babu ◽  
Pradip Dey
Keyword(s):  
Field Experiments ◽  
Agricultural Research ◽  
Organic Fertilizers ◽  
Research Station ◽  
Agricultural Research Station ◽  
Target Yield ◽  
Test Verification ◽  
Absolute Control ◽  
Inorganic And Organic

Field experiments were conducted from 2015-16 to 2017-18 on a Typic Rhodustalfs (Alfisol) soils of Telangana at Regional Agricultural Research Station, Palem, Nagarkurnool, Southern Telangana Zone, India to validate targeted yield based fertilizer prescription equations which developed for hybrid castor by adopting eight treatments viz., Blanket recommendation (100% RDF:80:40:30 kg N, P2O5 and K2O ha-1), Blanket+5 t ha-1 of vermin-compost (VC), STCR-Target yield with NPK alone at 25q ha-1, STCR-Target yield with IPNS at 25q ha-1, STCR-Target yield with NPK alone at 30q ha-1, STCR-Target yield with IPNS at 30q ha-1, Farmer’s practice (40:20:0kg N, P2O5 and K2O ha-1) and Absolute control (without inorganic and organic fertilizers). The findings of these test verification trials clearly revealed that the percent achievement of the aimed yield target was within + 10 percent variation confirming the validity of the equations. Using STCR-NPK@25 and 30q ha-1 recorded significantly higher seed (20.74 and 22.30q ha-1) and stalk (24.63 and 26.36q ha-1) yield over blanket recommendation (19.40 and 23.13 q ha-1), while STCR-IPNS at 25 and 30 q ha-1recorde relatively higher seed (20.98 and 22.69q ha-1) and stalk (25.88 and 27.13q ha-1) yield over STCR-NPK alone treatments. The magnitude of built-up was higher with STCR-IPNS treatments as compared to STCR-NPK alone, blanket recommendations, farmer’s practice and absolute control.

scholarly journals Effect of mulching method and planting time on the yield and yield attributes of tomato in hill slope

1970 ◽  
Vol 34 (2) ◽  
pp. 227-232
Author(s):  
ZA Firoz ◽  
MM Zaman ◽  
MS Uddin ◽  
MH Akand
Keyword(s):  
Key Words ◽  
Agricultural Research ◽  
Combined Effect ◽  
Research Station ◽  
Yield Attributes ◽  
Planting Time ◽  
Agricultural Research Station ◽  
Tomato Yield ◽  
Hill Slope ◽  
The Hill

An experiment was conducted at the Hill Agricultural Research Station, Khagrachari from September 2002 to February 2003 to find out the effect of mulching method (Mulching one month before planting, mulching just after planting and no mulching) and planting times (01 October, 16 October and 01 November) on the yield and yield attributes of tomato in hill slope. The highest yield (21.43 t/ha) was obtained from plant where mulch was given one month before planting. Among three planting times, the highest yield (15.27 t/ha) was obtained from 01 October planting. In case of combined effect, mulching one month before planting with 01 October planting produced the highest yield (28.06 t/ha) of tomato in hill slope. Key Words: Mulching; planting time; tomato yield; hill slope.  DOI: 10.3329/bjar.v34i2.5793Bangladesh J. Agril. Res. 34(2): 227-232, June 2009

Bartlett's Work on Agricultural Experiments

1975 ◽  
Vol 12 (S1) ◽  
pp. 9-16
Author(s):  
W. G. Cochran
Keyword(s):  
Treatment Effects ◽  
Agricultural Research ◽  
Experimental Designs ◽  
Research Station ◽  
Agricultural Research Station ◽  
Efficient Detection ◽  
Selection Of

A selection of Bartlett's work as an operating statistician in his first position as statistician 1934–38 at the I.C.I. agricultural research station at Jealott's Hill, Berks., is described. This illustrates some of the methods he used for the efficient detection of treatment effects and for an appraisal of the suitability of the experimental designs that were being used.

Insect pest complex of rose at Regional Agricultural Research Station, Ambalavayal, Wayanad

2017 ◽  
pp. 39-44
Author(s):  
R. Smitha ◽  
P. Rajendran ◽  
P.T. Sandhya ◽  
V.S. Aparna ◽  
P.C. Rajees
Keyword(s):  
Agricultural Research ◽  
Insect Pest ◽  
Research Station ◽  
Agricultural Research Station

Genetic Analysis of Pigeonpea [Cajanus cajan (L.) Millsp.] Hybrids for Yield and Yield Attributes

2020 ◽  
Author(s):  
Sandeep S. ◽  
Sujatha K. ◽  
Manikya Minnie C. ◽  
Sudha Rani C.
Keyword(s):  
Plant Height ◽  
Seed Yield ◽  
Agricultural Research ◽  
Test Weight ◽  
Research Station ◽  
High Genetic Diversity ◽  
Yield Attributes ◽  
Pod Length ◽  
Number Of Seeds ◽  
Number Of Branches

An experiment was carried-out with forty-eight hybrids of pigeonpea and two checks for nine characters at Agricultural Research Station, Tandur (Professor Jayashankar Telangana State Agricultural University). Analysis of variance revealed significant differences among the hybrids for all the nine characters studied. The results of genetic parameters revealed that, high genotypic (GCV) and phenotypic coefficients of variations (PCV) were observed for seed yield and number of pods per plant. Six characters viz., number of branches per plant, number of pods per plant, number of seeds per pod, pod length, test weight and seed yield exhibited high heritability estimates coupled with high genetic advance as per cent of mean which suggested that these traits were amenable for further improvement following simple selection methods. Character association revealed significant positive association of seed yield with plant height,number of branches per plant, number of pods per plant, number of seeds per pod and pod length. Based on divergence studies, the hybrids were grouped into nine clusters in Tocher’s method, cluster II (14 hybrids) was the largest followed by cluster I (13), cluster VI (9), cluster IV (6), cluster IX (4) and the remaining clusters were solitary (III, V, VII and VIII). Out of the nine characters studied, seed yield, days to 50% flowering, test weight and plant height contributed 85.62 per cent of the total divergence and these traits were found to be important factors for genetic differentiation in the hybrids. The overall results of the study revealed that, hybrids under cluster IV and VIII and cluster VII and VIII had maximum and minimum inter cluster distances respectively and possessing high genetic diversity for the characters viz. plant height, number of branches per plant, number of seeds per pod and yield.

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