scholarly journals Effects of foliar application of nutrients on growth and yield of Bt cotton (Gossypium hirsutum L.)

2015 ◽  
Vol 44 (1) ◽  
pp. 9-14
Author(s):  
Kulvir Singh ◽  
Pankaj Rathore ◽  
RK Gumber
Keyword(s):  
Field Experiments ◽  
Foliar Application ◽  
Growth And Yield ◽  
Bt Cotton ◽  
Cotton Yield ◽  
Seed Cotton ◽  
Gossypium Hirsutum L ◽  
Pooled Data ◽  
Net Returns ◽  
Yield Parameters

Field experiments were conducted for three years during Kharif 2009-2011 to study the effect of foliar application of nutrients (N, Mg, Fe, Zn, Mn and B) on growth and yield parameters of Bt cotton. Pooled data indicated highest seed cotton yield (3421.4 kg/ha) with application of MgSO4 1.0%+ ZnSO4 0.5%. Better net returns ( 100760/ha) and improved B:C (4.06) ratio for MgSO4 1.0% + ZnSO4 0.5% clearly supported its application benefits to realize higher yield . DOI: http://dx.doi.org/10.3329/bjb.v44i1.22717 Bangladesh J. Bot. 44(1): 9-14, 2015 (March)

scholarly journals Cotton phenology and production response to sowing time, row orientation and plant spacing using CROPGRO-cotton model

MAUSAM ◽  
2021 ◽  
Vol 72 (3) ◽  
pp. 627-634
Author(s):  
ABHISHEK DHIR ◽  
R. K. PAL ◽  
P. K. KINGRA ◽  
S. K. MISHRA ◽  
S. S. SANDHU
Keyword(s):  
Field Experiments ◽  
Growth And Yield ◽  
Yield Response ◽  
Bt Cotton ◽  
Plant Spacing ◽  
Cotton Yield ◽  
Seed Cotton ◽  
Sowing Time ◽  
Seed Cotton Yield ◽  
East West

The DSSAT module for cotton crop has been evaluated as a tool to predict the crop growth and yield response to microclimatic modifications. In this context, multi-location field experiments were laid out at Bathinda and Faridkot, districts of Punjab during Kharif 2018 with Bt-cotton hybrid RCH 773 BGII and sown at three times, i.e., April 30, May 15 and May 30 with two row orientations (North-South : N-S and East-West : E-W) and three plant spacing’s (67.5 cm × 45.0 cm, 67.5 cm × 60.0 cm and 67.5 cm × 75.0 cm) in factorial split plot design and replicated by three times. The model output in terms of simulated phenology showed close proximity over observed value having R2 of 0.51 and 0.61 at Bathinda and 0.43 and 0.87 at Faridkot anthesis and maturity, respectively. Among study locations, observed and simulated LAI ranged from 2.7 to 3.7 and 1.8 to 3.0. Simulated seed cotton yield was found significantly higher with the crop sown on 30th April (3053 and 3274 kg ha-1) than 30th May sowing (2392 and 2511 kg ha-1) at Bathinda and Faridkot, respectively, which was in good agreement with observed yield having higher value of d-stat (0.84 for Bathinda and 0.89 for Faridkot) and R2 (0.75 for Bathinda and 0.83 for Faridkot). Moreover, higher seed cotton yield was simulated under East-West row direction along with wider plant spacing (67.5 × 75 cm) at both locations. Overall, CROPGRO-cotton model can be used as research tool for the prediction of cotton phenology and yield and to explore site-specific adoption strategies such as appropriate sowing time, row orientation and plant spacing to sustain cotton productivity under changing climatic conditions.

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.

Economic Analysis of Parawilt Management in Bt-Cotton (Gossypium hirsutum L.) in Mansa District of South-western Punjab, India

2022 ◽  
Vol 58 (1) ◽  
pp. 93-96
Author(s):  
Gurdeep Singh ◽  
Pritpal Singh ◽  
Kulwant Singh ◽  
Gurjinder Pal Singh Sodhi ◽  
Bhallan Singh Sekhon
Keyword(s):  
Gossypium Hirsutum ◽  
Cobalt Chloride ◽  
Foliar Application ◽  
Bt Cotton ◽  
Cotton Yield ◽  
Seed Cotton ◽  
Economic Returns ◽  
Gossypium Hirsutum L ◽  
Physiological Disorder ◽  
Seed Cotton Yield

Parawilt characterized by a sudden drooping of leaves followed by death of plants withinfew hours after rainfall or heavy irrigation has been the major physiological disorder affectingproductivity of Bt-Cotton (Gossypium hirsutum L.). We studied the effect of foliarapplication of cobalt chloride (@10 mg L-1 water) within 24-36 hours after appearance ofsymptoms on recovery rate, seed cotton yield and economics at farmers’ fields in Mansadistrict of south-western Punjab. The results of front line demonstrations revealed thatfoliar application of cobalt chloride resulted in significantly (p<0.05) higher seed cottonyield by ~9.1 per cent, compared with the control (no-spray). The mean gross returns(MGRs) increased significantly by Rs. 9620/- ha-1 in the demonstration plots. The higherbenefit-cost (B:C) ratio of 2.38 was observed for the demonstration plots, against 2.15 forthe control (no-spray). The foliar application of cobalt chloride resulted in higher averageproduction efficiency of 1.1 kg seed cotton yield ha-1 d-1 and average economic efficiencyof Rs. 65.7 ha-1 d-1, compared with the control. These results therefore, revealed that farmerscan effectively manage parawilt in Bt-cotton using foliar application of cobalt chloride andmay increase seed cotton yield and economic returns.

Growth Analysis of Cotton in Competition with Velvetleaf (Abutilon theophrasti)

2016 ◽  
Vol 30 (1) ◽  
pp. 123-136 ◽  
Author(s):  
Xiaoyan Ma ◽  
Jinyan Yang ◽  
Hanwen Wu ◽  
Weili Jiang ◽  
Yajie Ma ◽  
...  
Keyword(s):  
Field Experiments ◽  
Fiber Quality ◽  
Dry Weight ◽  
Growth And Yield ◽  
Effective Management ◽  
Cotton Yield ◽  
Seed Cotton ◽  
Weed Density ◽  
Seed Cotton Yield ◽  
The Relationship

Field experiments were conducted in 2013 and 2014 to determine the influence of velvetleaf densities of 0, 0.125, 0.25, 0.5, 1, 2, 4, and 8 plants m−1of row on cotton growth and yield. The relationship between velvetleaf density and seed cotton yield was described by the hyperbolic decay regression model, which estimated that a density of 0.44 to 0.48 velvetleaf m−1of row would result in a seed cotton yield loss of 50%. Velvetleaf remained taller and thicker than cotton throughout the growing season. Both cotton height and stem diameter reduced with increasing velvetleaf density. Moreover, velvetleaf interference delayed cotton maturity, especially at velvetleaf densities of 1 to 8 plants m−1of row, and cotton boll number and weight, seed numbers per boll, and lint percentage were also reduced. Fiber quality was not influenced by weed density when analyzed over 2 yr; however, fiber length uniformity and micronaire were adversely affected in 2014. Velvetleaf intraspecific competition resulted in density-dependent effects on weed biomass, ranging from 97 to 204 g plant−1dry weight. Velvetleaf seed production per plant or per square meter was indicated by a logarithmic response. At a density of 1 plant m−1of cotton row, velvetleaf produced approximately 20,000 seeds m−2. The adverse impact of velvetleaf on cotton growth and development identified in this study have indicated the need for effective management of this species when the weed density is greater than 0.25 to 0.5 plant m−1of row and before the weed seed maturity.

scholarly journals Exogenously Applied Bio-Stimulant and Synthetic Fertilizers to Improve the Growth, Yield and Fiber Quality of Cotton

2019 ◽  
Vol 11 (7) ◽  
pp. 2171 ◽  
Author(s):  
Muhammad Arif ◽  
Shadia Kareem ◽  
Nariman Ahmad ◽  
Nazim Hussain ◽  
Azra Yasmeen ◽  
...  
Keyword(s):  
Foliar Application ◽  
Field Trials ◽  
Quality Parameters ◽  
Bt Cotton ◽  
Cotton Yield ◽  
Seed Cotton ◽  
Exogenous Application ◽  
Synthetic Fertilizers ◽  
Cotton Cultivar

The effects of exogenously applied Moringa oleifera leaf extract (MLE), nitrogen and potassium were studied on the productivity and quality of two cotton cultivars (CIM-573) and transgenic Bt cotton (CIM-598). The Randomized Complete Block Design (RCBD) factorial experiment was conducted at Bahauddin Zakariya University, Multan, Pakistan (30.2639 °N, 71.5101 °E; 123 m asl), during 2016 and 2017, with three replications. The analysis of variance revealed the significance of cotton cultivars and foliar applications for the majority of traits studied, in both years. The CIM-573 had superiority for most of the traits studied in 2016 and 2017 trials, while the CIM-598 cultivar had significantly higher record for chlorophyll content, seed cotton yield, mean boll weight, and seed index in 2016 and sympodial branches per plant in 2017. Foliar application of Moringa Leaf Extract (MLE) and synthetic fertilizers showed significant differences for the traits studied compared to the distilled water. Exogenous application of MLE has a positive effect on photosynthetic and enzymatic activities that improve the efficiency of nutrients that are utilized, thereby improving the growth, seed cotton yield and quality of cotton cultivars tested. All the interaction effects had a significant influence on the traits studied, except ginning percentage in 2016. The interaction between the conventional cotton cultivar (CIM 573) and exogenous application of MLE + nitrogen + potassium had significantly higher effect on plant height, cotton yield, staple length, fiber maturity, and fiber strength for the 2017 trial and was superior for the quality parameters in 2017. The interaction of the Bt cotton cultivar (CIM 598) and the foliar application of MLE + nitrogen + potassium had superiority in cotton yield, yield components and the quality parameters in the 2017 trial. Both the CIM 573 and CIM 598 cotton cultivars had consistent expressions for all quality traits studied, although they did fluctuate in their expression to these agronomic traits between the field trials of 2016 and 2017. Additive gene effects could be the explanation for the unstable effects of yield and the related traits in the different environmental conditions of the field trials in the two years. Our results suggest that the exogenous application of MLE alone and in combination with nitrogen and potassium could be used to improve the productivity and the quality of these cotton cultivars. The correlation coefficients indicate strong associations between the agronomic and quality traits, indicating that one or more yield parameters could be used as selection criteria to improve the productivity and quality of cotton.

scholarly journals Response of different Bt cotton (Gossypium hirsutum L.) hybrids to canopy modification practices

2016 ◽  
Vol 8 (3) ◽  
pp. 1188-1197
Author(s):  
Amit Kaul ◽  
J. S. Deol ◽  
A. S. Brar
Keyword(s):  
Plant Height ◽  
Growth Regulation ◽  
Foliar Application ◽  
Field Investigation ◽  
Bt Cotton ◽  
Cotton Yield ◽  
Seed Cotton ◽  
Area Index ◽  
Seed Cotton Yield ◽  
Verse Effect

A field investigation was carried out to characterize the growth and development of Bt cotton hybrids by detopping and use of plant growth retardants during the rainy (kharif) season of 2011 and 2012. The experimental site had loamy sand soils with normal in reaction. The experiment (split plot) involved three Bt cotton hybrids (MRC 7017, MRC 7031 and RCH 314) in main plots and growth regulation treatments (Mepiquat chloride (MC) @ 300 ppm, 2, 3, 5-tri iodo benzoic acid (TIBA) @ 100 ppm and Maelic hydrazide (MH) @ 250 ppm) in sub plots with four replications. Hybrid MRC 7017 produced significantly higher (p<0.01) seed cotton yield which was attributed to the maximum number of sympodial branches plant-1, total number of flowers and picked bolls plant-1. Application of MC @ 300 ppm, TIBA @ 100 ppm and MH @ 250 ppm reduced plant height, leaf area index and total dry matter accu-mulation than control. Detopping treatment significantly (p<0.01) reduced plant height than control but attained more plant height than all the PGRs. MC @ 300 ppm, TIBA @ 100 ppm and MH @ 250 ppm at 80 days after sowing had beneficial effect on seed cotton yield. Detopping done at 80 days after sowing failed to influence the seed cotton yield dur-ing both the years. The results revealed that foliar application of MC @ 300 ppm yielded more seed cotton by improv-ing the setting percentage and therefore, increased number of picked (open) bolls plant-1 without exhibiting any ad-verse effect on quality traits.

scholarly journals Effect of biovita granules and liquid on growth and yield of cotton (Gossypium hirsutum L.)

2017 ◽  
Vol 9 (3) ◽  
pp. 1871-1876
Author(s):  
Y. M. Ramesha ◽  
Bhanuvally Manjunatha ◽  
Ashok Kumar Gaddi ◽  
D. Krishna Murthy
Keyword(s):  
Gossypium Hirsutum ◽  
Biomass Yield ◽  
Black Soil ◽  
Growth And Yield ◽  
Cotton Yield ◽  
Gossypium Hirsutum L ◽  
Pooled Data ◽  
Treat Ment ◽  
Agricultural Sciences

A study was conducted on effect of biovita granules and liquid on growth and yield of cotton during Kharif 2014 and 2015 in deep black soil at ARS, Dhadesugr, University of Agricultural Sciences, Raichur, Karnataka. Pooled data revealed that, cotton yield and green biomass yield were significantly (p=0.05) higher in the treatment with the application of biovita granule at 12.5 kg per hectare at one month after sowing followed by first spray of biovita liquid at 500 ml per hectare at square formation followed by second spray of biovita liquid at 750 ml per hectare at flowering and followed by third spray of biovita liquid at 750 ml per hectare at boll formation (1450 kg/ha and 1463 g/plant, respectively) and which was on par with the application of biovita granule at 10.0 kg per hectare at one month after sowing followed by first spray of biovita liquid at 500 ml per hectare at square formation followed by second spray of biovita liquid at 750 ml per hectare at flowering and followed by third spray of biovita liquid at 750 ml per hectare at boll formation (1377 kg/ha and 1439 g/plant, respectively). Whereas, application of only recommend-ed dose of fertilizer recorded significantly less cotton and green biomass yield compared to other treatments. The average per cent of increase in yield in biovita applied treatments (T1 to T8) over the no application of biovita treat-ment (T9) was 7.13 %.

scholarly journals Crop Geometry and Nitrogen Levels Influence on Growth, Yield and Economics of Compact Cotton (Gossypium hirsutum L.) in Rainfed Vertisols

2021 ◽  
pp. 28-37
Author(s):  
B. B. Nayak ◽  
S. Bharathi ◽  
M. Sree Rekha ◽  
K. Jayalalitha
Keyword(s):  
Growth And Yield ◽  
Research Station ◽  
Dry Matter Accumulation ◽  
Cotton Yield ◽  
Seed Cotton ◽  
Area Index ◽  
Seed Cotton Yield ◽  
Nitrogen Levels ◽  
Net Returns ◽  
Crop Geometry

Aims: To study the effect of crop geometry and nitrogen levels on compact cotton genotype in rainfed vertisols condition. Study Design: The experiment was laid out in a randomized block design with a factorial concept with 3 levels of crop geometry and four levels of nitrogen with 12 treatment combinations and replicated thrice. Place and Duration of Study: A field experiment was conducted on vertisols under rainfed conditions at Regional Agricultural Research Station Lam, Guntur during the year 2018 – 2019. Methodology: The treatments consisted of three crop geometries S1 – 60 cm × 10 cm, S2- 75 cm × 10 cm, S3- 90 cm × 45 cm in combination with four nitrogen levels N1- 45kg N ha-1, N2- 90kg N ha-1, N3- 135 kg N ha-1, N4- 180 kg ha-1. Results: Closer crop geometry of 60 cm × 10 cm recorded taller plants and maximum dry matter accumulation, functional leaves per square meter, leaf area index, maximum chlorophyll content, number of bolls per square meter and seed cotton yield per ha-1, net returns and returns per rupee. However, the number of sympodial branches per plant and sympodial length was highest with wider crop geometry of 90 cm × 45 cm. All the growth and yield parameters recorded were maximum with the application of 180Kg N ha-1 than all the other levels of nitrogen tested. Conclusion: Overall, the results showed that the Crop geometry of 60cm × 10 cm  with application of 135 kg N ha-1  was found to be optimum to realize of maximum seed cotton yield and net returns.

Cover Crops Suppression of Palmer Amaranth (Amaranthus palmeri) in Cotton

2017 ◽  
Vol 32 (1) ◽  
pp. 60-65 ◽  
Author(s):  
Matheus G. Palhano ◽  
Jason K. Norsworthy ◽  
Tom Barber
Keyword(s):  
Cover Crops ◽  
Cover Crop ◽  
Field Experiments ◽  
Palmer Amaranth ◽  
Cotton Yield ◽  
Cotton Production ◽  
Seed Cotton ◽  
Cereal Rye ◽  
Seed Cotton Yield ◽  
Weed Emergence

AbstractWith the recent confirmation of protoporphyrinogen oxidase (PPO)-resistant Palmer amaranth in the US South, concern is increasing about the sustainability of weed management in cotton production systems. Cover crops can help to alleviate this problem, as they can suppress weed emergence via allelochemicals and/or a physical residue barrier. Field experiments were conducted in 2014 and 2015 at the Arkansas Agricultural Research and Extension Center to evaluate various cover crops for suppressing weed emergence and protecting cotton yield. In both years, cereal rye and wheat had the highest biomass production, whereas the amount of biomass present in spring did not differ among the remaining cover crops. All cover crops initially diminished Palmer amaranth emergence. However, cereal rye provided the greatest suppression, with 83% less emergence than in no cover crop plots. Physical suppression of Palmer amaranth and other weeds with cereal residues is probably the greatest contributor to reducing weed emergence. Seed cotton yield in the legume and rapeseed cover crop plots were similar when compared with the no cover crop treatment. The seed cotton yield collected from cereal cover crop plots was lower than from other treatments due to decreased cotton stand.

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