scholarly journals Bio-efficacy of Certain Insecticides Sequence on Cotton Sucking Pests and Pink Bollworm

2021 ◽  
Vol 12 (6) ◽  
pp. 766-773
Author(s):  
B. Ram Prasad ◽  
◽  
D. Ashwini ◽  
Keyword(s):  
Agricultural Research ◽  
Experimental Period ◽  
Field Trials ◽  
Pink Bollworm ◽  
Cost Ratio ◽  
Research Station ◽  
Cotton Yield ◽  
Neem Oil ◽  
Seed Cotton ◽  
Seed Cotton Yield

The field trials were conducted for two consecutive years during kharif, 2018 and 2019 seasons in the Regional Agricultural Research Station, Warangal, Telangana, India. The susceptible hybrid RCH-2 was grown during both the years of study. Among the treatments, significant (25.4%) reduction of aphids was recorded in neem oil, clothianidin and flonicamid sequential spray. The sequence chlorpyriphos, flonicamid and clothianidin achieved superior efficacy against jassids with 32.3% reduction over control during the two seasons. The highest reduction (25.2%) of thrips was observed in neem oil, clothianidin, flonicamid sequential spray. The incidence of whitefly was low during the experimental period, however, the highest white fly reduction (15.0%) was observed in chlorpyriphos, flonicamid, clothianidin spray. The lowest number of PBW larvae per 10 green bolls was observed in profenophos, spinetoram, chlorpyriphos+cypermethrin sequential spray that reduces up to 61.9% incidence. The lowest number of (38.5) damaged locules per 100 fully opened bolls were observed in profenophos, spinetoram, chlorpyriphos+cypermethrin sequential spray. But, the highest seed cotton yield (1414 kg ha-1) as well as benefit cost ratio (1.02) was recorded in chlorpyriphos, flonicamid, emamectin benzoate, clothianidin, indoxacarb+acetamiprid sequential spray. The study further revealed that, initial control of sucking pests menace especially jassid was crucial in deciding the cotton yield as compared to later stage pink bollworm menace. During both the years, it was noticed that during peak incidence of jassid, the treated plot with flonicamid against jassid in first instance had given highest seed cotton yield.

scholarly journals Genetic variability and association between oil and economic traits for some new Egyptian cotton genotypes

2021 ◽  
Vol 45 (1) ◽  
Author(s):  
Sara E. I. Eldessouky ◽  
A. B. A. El-Fesheikawy ◽  
K. M. A. Baker
Keyword(s):  
Oil Content ◽  
Agricultural Research ◽  
Research Station ◽  
Cotton Yield ◽  
Seed Cotton ◽  
Breeding Programs ◽  
Seed Cotton Yield ◽  
Boll Weight ◽  
Cotton Genotypes ◽  
Seed Index

Abstract Background Cotton breeding programs mainly focus on improving cotton fibers, but less attention has been paid by breeders to cottonseed oil improvement. Breeding cottonseed for oil content has mainly depended on phenotypic information used to select varieties with high seed oil content. The purpose of this study was to evaluate some cotton genotypes regarding their oil content and other characters related to fiber yield, in order to select genotypes with high oil content and acceptable levels of the other characters. Seventeen different genotypes of cotton were used in this study. A two-year experiment was carried out at Sids Agricultural Research Station, Beni Suef, Egypt, during 2017 and 2018, using a randomized complete block design with six replications. Seed cotton yield, lint cotton yield, boll weight, seed index, embryo index, oil % and embryo oil index characters were recorded. Results The analysis of variance results showed highly significant differences among the genotypes for all the studied traits except boll weight in season 2017. The overall cotton embryo oil % ranged from 33.40 to 40.28 among the genotypes, while the overall cotton embryo oil index ranged from 1.79 to 2.47. Maximum cotton embryo oil % was noted by the genotypes 15 [{(G83 × G80) × G89} × Australian] and 8 [(G 91 × G90) × (G 85 × G 83)], while maximum cotton embryo oil index was noted by the genotype 13 [(G 91 × G 90) × G80]. The results showed positive correlations between seed cotton yield and lint cotton yield, seed index and embryo index, seed index and embryo index oil %, embryo index and embryo index oil %, and oil % and embryo index oil %. Conclusions It could be concluded that using seed or embryo oil percentages as criteria for differentiating genotypes according to their oil content is misleading and the best efficient measure is using the seed or embryo oil indices because they depend on weight basis. Also, Genotypes 13, 15 and 8 were the best genotypes regarding oil % and they could be used in breeding programs for cotton oil improvement.

scholarly journals Genetic Variability Estimation and Frequency of Superior Progenies in Advance Breeding lines in desi cotton at two locations

2015 ◽  
Vol 10 (1) ◽  
pp. 313-317
Author(s):  
Bangaremma Wadeyar ◽  
T Kajjidoni
Keyword(s):  
Genetic Variability ◽  
Plant Height ◽  
Coefficient Of Variation ◽  
Agricultural Research ◽  
Research Station ◽  
Cotton Yield ◽  
Seed Cotton ◽  
Seed Cotton Yield ◽  
Boll Weight ◽  
Seed Index

Two hundred and two progenies were evaluated at two locations viz., Agricultural Research Station, Annigeri and Main Agricultural Research Station, Dharwad to estimate genetic variability and to identify superior progenies for seed cotton yield, yield contributing and fibre quality traits. The analysis of variance revealed presence of sufficient variability in the material for seven traits at both locations. High phenotypic coefficient of variation (PCV) and genotypic coefficient of variation (GCV) were recorded for number of bolls per plant and seed cotton yield per plant, while, moderate variability estimate was recorded for plant height and low PCV and GCV were noticed for boll weight, ginning out turn, seed index and lint index traits at both the locations. High heritability was observed for seed index exhibited 97 per cent with moderate genetic advance as percent mean (GAM) at both the locations. High GAM was observed for number of bolls per plant, seed cotton yield and plant height. Moderate GAM was noticed for boll weight and seed index traits at both locations. An attempt was made to identify superior progenies, maximum number of superior progenies were observed for seed cotton yield at Dharwad (33 progenies) followed by Annigeri (24 progenies).

scholarly journals Gene Action Studies in the Inheritance of Yield and Quality Attributing Traits in Diallel Cross of Cotton (Gossypium hirsutum L.)

2021 ◽  
Vol 9 (3) ◽  
pp. 105-109
Author(s):  
V. J. Zapadiya ◽  
Keyword(s):  
Plant Height ◽  
Block Design ◽  
F1 Hybrids ◽  
Research Station ◽  
Cotton Yield ◽  
Seed Cotton ◽  
Gene Effects ◽  
Partial Dominance ◽  
Seed Cotton Yield ◽  
Genetic Components

A field experiment was conducted to evaluate the 45 F1 hybrids derived from 10×10 half diallel fashion along with ten parents and one standard check GN.Cot.Hy-14 were sown in randomized block design with three replications during kharif -2017 at Cotton Research Station, Junagadh Agricultural University, Junagadh. The genetic components of variation were determined for 12 characters viz., days to 50% flowering, days to 50% boll opening, plant height (cm), number of monopodia per plant, number of sympodia per plant, number of bolls per plant, boll weight (g), seed cotton yield per plant (g), ginning percentage (%), seed index (g), lint index (g) and oil percentage (%).The estimate of the components of variation revealed significant results for both additive (D) as well as dominance effects (H1 and H2) for all the characters except plant height non-significant H2 component, but in majority of traits (except plant height, lint index) H1 was higher than D indicating dominance components were important in the inheritance of seed cotton yield and its components. The average degree of dominance (H1/D)1/2 was found to be more than unity for all the traits (except plant height, number of monopodia per plant and lint index indicating partial dominance) indicating over dominance. Asymmetrical distribution of positive and negative genes in the parents was observed for all the traits. High estimates of heritability in narrow sense was observed for days to 50% flowering, days to 50 % boll bursting, number of monopodia per plant, ginning percentage (%), lint index (g) and oil content (%) suggesting that selection based on these attribute would lead to rapid improvement. Due to preponderance of non-additive gene effects of seed cotton yield per plant and most of its component traits, heterosis breeding would also be practically feasible in cotton.

scholarly journals Yield and some agronomic parameters of upland cotton as affected by planting dates

2020 ◽  
Vol 2 (1) ◽  
pp. 37
Author(s):  
Waqas Ahmed Lashari ◽  
Salma Naimatullah ◽  
Hamza Afzal
Keyword(s):  
Plant Height ◽  
Upland Cotton ◽  
Planting Date ◽  
Research Station ◽  
Cotton Yield ◽  
Seed Cotton ◽  
Planting Dates ◽  
Seed Cotton Yield ◽  
Average Maximum ◽  
Boll Weight

A field experiment was conducted at ICI Research Farm, Multan to evaluate the effect of different sowing dates on plant height, number of monopodia, number of sympodia, number of bolls per plant, boll weight, seed cotton yield kg/ha of two upland cotton varieties (ICI-2121 and ICI-2424) developed by ICI Pakistan Limited, Multan against a standard check variety IUB-2013 during 2019, and 2020 years.  These varieties were planted on 1st April, 15th April, 1st May, 15th May, 1st June, and 15th June, at ICI Cotton Research Station, 19-Kasi Vehari Road, Multan.  Results revealed that statistically highly significant differences in planting dates were observed for all the parameters studied except number of monopodial branches and boll weight which depicted non-significant differences. Regarding varieties and interaction between varieties and planting times, similar trend of statistical differences was observed. As regards to planting dates, generally, all the parameters under study showed their maximum performance when crop was planted on 1st May followed by 1st April planting date, whereas, minimum performance of the parameters was recorded when the crop was planted on 15th June followed by 1st June. Regarding varietal performance, on an average, maximum plant height (146cm) was observed in ICI-2121 followed by IUB-2013. Same trend of performance of varieties regarding number of monopodia and sympodia per plant was observed.  Regarding average number of bolls per plant in different varieties, it was observed that ICI-2121 produced maximum (32 bolls) followed by ICI-2424 (31 bolls) and IUB-2013 (28 bolls) irrespective of planting dates. The same trend of varietal performance regarding boll weight was recorded. When seed cotton yield (kg/ha) was evaluated, on an average of varieties, ICI-2121 produced maximum seed cotton yield (1228 kg/ha) followed by ICI-2424 and IUB-2013 which produced 1147 and 1046 kg/ha seed cotton yield respectively irrespective of planting dates. It was concluded that under agro-climatic conditions of Multan, 1st May planting date was evaluated as optimum cotton sowing time. Before or after 1st May, this study does not recommend growing cotton in this particular zone.  Among cotton varieties, ICI-2121 is recommended for sowing under this planting time being producing higher yields.

scholarly journals Caractérisation Agro-Morphologique De Variétés De Cotonnier (Gossypium Hirsutum) Pour Une Régionalisation Economique Pour La Production Du Coton Au Bénin

2016 ◽  
Vol 12 (36) ◽  
pp. 210
Author(s):  
Hougni Alexis ◽  
Imorou Lucien ◽  
Dagoudo Augustin ◽  
Zoumarou-Wallis Nouhoun
Keyword(s):  
Agricultural Policy ◽  
Agricultural Research ◽  
Cotton Fibers ◽  
Cotton Yield ◽  
Seed Cotton ◽  
Ecological Zones ◽  
Seed Cotton Yield ◽  
Cotton Farmers ◽  
Agroecological Zone ◽  
Agro Ecological Zones

To take more account of the terroir effect in varietal choice and address the concerns of cotton farmers who disapprove the agricultural policy of single variety, research on varietal regionalization was initiated during four campaigns, by the Agricultural Research Center for Cotton Fibers. This idea is reinforced by the diversity of agro-ecological zones of the country. The nonrenewal of the variety in extension since the 2002-2003 campaign is also an element of justification concerns of industry players. This study aims to exploit the terroir effect to identify the most suitable varieties for each agroecological zone and meet the needs of industry players including producers and ginners. The experiment was conducted in 2011-2012 on Angaradébou sites, Okpara, Savalou and Ketou respectively representing the zones 1 (Alibori / Atakora); 2 (Borgou / Donga); 3 (Hills) and 4 (Zou / Ouemé Plateau / Mono-Couffo). The adopted experimental device is a Fisher block with four replicate and eight treatments or varieties H 279-1 in extension witness. Other varieties include E 944-2; E 956-2; H 769-5; H 782-3; I 875-3; K 768-3 and K 787-2.The measured parameters are the earliness of production, seed cotton yield in the field, the weight of 100 seeds and the fiber ginning outturn. Data analysis revealed significant differences between and inside sites for most measured parameters. The results showed that varieties E 956-2 (1983.85 kg / ha), H 769-5 (1820.49 kg / ha), K 768-3 (1735.42 kg / ha) and H 782-3 (1533.59 kg / ha) in terms of seed cotton yield in the field and compared their performance to shattering were the best respectively in zones 1, 2, 3 and 4.

Comparison of Lygus elisus Van Duzee and Lygus hesperus Knight (Hemiptera: Miridae) Feeding Injury to Pre-bloom Cotton

2005 ◽  
Vol 40 (2) ◽  
pp. 143-148 ◽  
Author(s):  
J. Scott Armstrong ◽  
Leonardo D. A. Camelo ◽  
Harlan G. Thorvilson ◽  
Leslie D. Thompson
Keyword(s):  
Surface Area ◽  
Field Trials ◽  
High Plains ◽  
Cotton Yield ◽  
Laboratory Studies ◽  
Seed Cotton ◽  
Lygus Hesperus ◽  
Seed Cotton Yield ◽  
Texas High Plains ◽  
Significant Difference

Feeding injury and abscission of 6th, 9th and 11th node, first-position cotton squares exposed to Lygus hesperus Knight and L. elisus Van Duzee for 24 h were investigated in field and laboratory studies in 2001 and 2002. Square abscission was not significantly different for L. elisus or L. hesperus in six separate field trials over 2 yrs; however, the control was significantly lower in abscission in two of the six trials. Final square abscission averaged across the 2 yrs was 82.5% for the control, 90.0% for L. hesperus, and 86.3% for L. elisus. Square injury, as measured by estimating the surface area affected by Lygus feeding, was significantly higher for L. elisus compared with L. hesperus in three of the six of trials (6th node in 2002, 11th node for 2001 and 2002) indicating that, in some cases, L. elisus damage is higher than L. hesperus. However, when seed-cotton yield was obtained from squares that did not abcise, there was no significant difference for the control or the two Lygus species. This result was similar to other published studies of infesting cotton with L. lineolaris (Palisot de Beauvois) where yield compensation negated any differences in yield when infested cotton was compared to the control. Lygus elisus, a little known and often misidentified plant bug pest of Texas High Plains cotton, should be considered as damaging as L. hesperus.

scholarly journals Growth and Yield of Bt Cotton Influence by Land Configuration and Nutrient Levels Under Rainfed Situation

2019 ◽  
pp. 1-7
Author(s):  
V. Ambika ◽  
G. S. Yadahalli ◽  
B. M. Chittapur ◽  
Shamrao Kulkarni ◽  
Vidhyavathi G. Yadahalli ◽  
...  
Keyword(s):  
Reproductive Organs ◽  
Growth And Yield ◽  
Research Station ◽  
Bt Cotton ◽  
Dry Matter Accumulation ◽  
Cotton Yield ◽  
Seed Cotton ◽  
Seed Cotton Yield ◽  
Plant Parts ◽  
Net Returns

A field experiment was conducted at main agriculture research station, Raichur (Karnataka, India) during Kharif 2016 to enhance the yield of Bt cotton and improve the economy of farmers under the rainfed situation. The experiment was laid out in split plot design with three land configuration practices as main plots and four different combinations of an organic and inorganic source of nutrients as subplots replicated thrice. The results showed that, significantly higher seed cotton yield (2834 kg ha-1) were recorded with land configuration practice of Ridges and Furrow method in conjunction with application of 90:45:45 NPK kg ha-1 (50% N through organic) when compared to Broad Bed and Furrow method and Flat Bed methods and their respective combination with different source of nutrients. This trend was also reflected in dry matter accumulation in various plant parts (leaves, stem and reproductive organs). The combined effect of Ridges and Furrow method and application of 90:45:45 NPK kg ha-1 (50% N through organic) also resulted in recording higher gross (Rs.1,53,018 ha-1) and net returns (Rs.1,07,67 ha-1) when compared to other treatment combinations. Therefore it was concluded that, land configuration practice of Ridges and Furrow method in combination with the application of 90:45:45 NPK kg ha-1 (50% N through organic) was found to be the best option to realise higher seed cotton yield and more economical.

scholarly journals Effect of Recycling of Cotton Stalks on Yield and Yield Attributes of Cotton under Dry Farming Condition

2019 ◽  
pp. 1-4
Author(s):  
V. D. Vora ◽  
S. C. Kaneriya ◽  
A. D. Parmar ◽  
N. Desai ◽  
P. D. Vekariya ◽  
...  
Keyword(s):  
Clayey Soil ◽  
Management Practice ◽  
Ex Situ ◽  
Research Station ◽  
Cotton Yield ◽  
Seed Cotton ◽  
Yield Attributes ◽  
Seed Cotton Yield ◽  
Cotton Stalks ◽  
Dry Farming

An experiment was under taken on “Effect of recycling of cotton stalks on yield and yield attributes of cotton under dry farming condition”on medium black clayey soil at Dry Farming Research Station, Junagadh Agricultural University, Targhadia (Rajkot) during Kharif 2017-19. The experiment was laid out in strip plot design with three replications. The experiment consist of five main plot treatments viz.; S1- Removal of cotton stalks from plot, S2- Surface burning of cotton stalks, S3- Incorporation of cotton stalks using rotavator, S4- Incorporation cotton stalks using mobile chopper and S5- Ex-situ composting of cotton stalks using shredderand three sub plot treatments viz.; D1- One irrigation for decomposting, D2- One irrigation + addition  of N @10 kg/ha through urea + compost culture @ 5 kg/ha, D3 - Addition of  N@ 10 kg/ha through urea + compost culture @ 5 kg/ha at sowing,thus, fifteen treatment combinations. The stalks management practice S5 (Ex-situ composting of cotton stalks using shredder) recorded maximum seed cotton yield (1875 kg/ha). Whereas, effect of de-composting practices on yield attributes and seed cotton yield was found non-significant. However, the maximum seed cotton yield (1823 kg/ha) was recorded under de-composting practice D1 (one irrigation for decomposting).

scholarly journals Sensitivity analysis of CROPGRO- cotton model to intra-seasonal climatic variability in middle Gujarat

2021 ◽  
Vol 21 (2) ◽  
pp. 148-153
Author(s):  
D. D. PATIL ◽  
VYAS PANDEY ◽  
VIPUL KAPADIA ◽  
A. C. SADHU
Keyword(s):  
Sensitivity Analysis ◽  
Temperature Variation ◽  
Minimum Temperature ◽  
Climatic Variability ◽  
Maximum Effect ◽  
Research Station ◽  
Cotton Yield ◽  
Seed Cotton ◽  
Seed Cotton Yield ◽  
Incremental Change

The CROPGRO-Cotton model was first calibrated and validated with the six years (2011-12 to 2016-17) of experimental data collected at Regional Research Station, A.A.U., Anand for two cultivars of cotton (DCH 32 and G. Cot. Hy. 102) to study the effect of intra-seasonal climatic variability on seed cotton yield. The model sensitivity analysis was carried out by incremental change in climatic parameters (maximum and minimum temperature from -30 to +30C) and rainfall (-25% to +25%). Results revealed that elevated temperature had negative effect on seed cotton yield and reduced temperature had positive effect on seed cotton yield. The varieties DCH 32 was slightly less affected by the temperature variation than G. Cot. Hy. 102. Temperature variation during October to December was found to have maximum effect on cotton crop. The effect of minimum temperature on seed cotton yield was more than that observed with maximum temperature.Cotton crop was affected more by variation in rainfall during September in comparison to that of July and August.

scholarly journals Susceptibility of several cotton varieties to the cotton flea beetle, Podagrica puncticollis Weise (Coleoptera: Chrysomelidae), in a hot dry tropical environment of Ethiopia

2021 ◽  
Vol 30 (1) ◽  
pp. 1
Author(s):  
Eshetu Agegnehu Abebe ◽  
Mulatu BAYEH ◽  
TEBKEW TEBKEW ◽  
Wakgari MULATU
Keyword(s):  
Leaf Area ◽  
Block Design ◽  
Flea Beetle ◽  
Field Trials ◽  
Cotton Yield ◽  
Adult Beetle ◽  
Seed Cotton ◽  
Seed Cotton Yield ◽  
Randomized Complete Block Design ◽  
Cotton Plants

Field trials were conducted to determine the reaction of cotton varieties to cotton flea beetle infestation. The experiment was laid out in a Randomized Complete Block Design with three replications comprising twelve cotton varieties. The results showed significant (P < 0.01) differences among varieties in the populations of adult beetle they hosted and the injury they sustained at 15, 22, 29, 36 and 43 days after sowing (DAS). At 15 DAS, the highest numbers of adult beetle per plant (6.3), percent leaf area damaged (60.32 %) and number of shot-holes per attacked leaf (53.4) was recorded in Cucurova variety, whereas the lowest in Bulk-202 (2.05 beetles, 26.15% leaf area damaged and 23.16 shot-holes). The rate of incidence and damages decreased with the increase of the age of the cotton plants. Significant differences were also observed among cotton varieties in some agronomic characteristics i.e. in number of plants counted per plot at harvest and seed cotton yield in terms of kilogram per hectare. Seed cotton yield obtained from all cotton varieties varied from 602.36 to 1644.71 kilogram per hectare and the highest was obtained from Bulk-202, while the lowest from Local variety. Based on these findings, Cucurova, Local, Ionia and Acala SJ-2 varieties showed highly susceptible response, while Candia, Sille-91 and Deltapine-90 were moderately susceptible to cotton flea beetle. However, Bulk-202, Delcero and Claudia were relatively more tolerant varieties followed by CCRI-12 and Cuokra. These results will be important for the most proper management of cotton flea beetle.

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