scholarly journals Soil Nutrients Status and Cotton Yield as Influenced by Split Application of Nitrogen and Potassium in Vertisol

2021 ◽  
pp. 68-75
Author(s):  
Komal A. Gade ◽  
D. V. Mali ◽  
B. A. Sonune ◽  
S. D. Jadhao ◽  
S. M. Bhoyar ◽  
...  
Keyword(s):  
Nutrient Status ◽  
Growth Stages ◽  
Cotton Yield ◽  
Split Application ◽  
Seed Cotton ◽  
Available N ◽  
Exchangeable Ca ◽  
Exchangeable Magnesium ◽  
Stalk Yield ◽  
Different Growth Stages

The present investigation was conducted during 2018-19 with a view to study the effect of split application of nitrogen and potassium on yield of cotton and soil nutrient status at Dr. Panjabrao Deshmukh Krishi Vidyapeeth, Akola. The experiment comprised of eight different treatments and their combination with foliar spray of 1 per cent MgSO4 at two different growth stages viz. flowering and boll development in randomized block design with three replications. The results of the present experiment revealed that, available nutrient status of soil was slightly increased with increase in the splits of N and K fertilizer. Available N, P, K, S and exchangeable Ca in soil were significantly increased with the split application of fertilizer. The fertilizer split did not show significant effect on the exchangeable magnesium status of soil. Foliar sprays of 1 per cent MgSO4 at two different growth stages viz. flowering and boll development irrespective of fertility levels showed slightly higher exchangeable magnesium status of soil. The lowest available N, P, K, S and exchangeable Ca and Mg was recorded in treatment of absolute control. The fertilizer splits show a consistent increase in the seed cotton yield and stalk yield of Bt cotton. Hence, it can be concluded that, application of 60:30:30 N, P2O5 and K2O kg ha-1 with splits of nitrogen at basal, 30, 60 and 90 DAS, 100 per cent P2O5 as basal and K2O in two equal splits at basal and 60 DAS recorded significantly higher seed cotton and cotton stalk yield. The seed cotton (R2 = 0.913**) and stalk yield (R2 = 0.935**) was significantly and positively correlated with the soil organic carbon status.

scholarly journals Response of Cotton Varieties to the Stage of Topping under Rainfed Condition of Bardiya, Nepal

2006 ◽  
Vol 27 ◽  
pp. 165-168 ◽  
Author(s):  
KB Basnet
Keyword(s):  
Block Design ◽  
Growth Stages ◽  
Cotton Yield ◽  
Seed Cotton ◽  
Rainfed Condition ◽  
Seed Cotton Yield ◽  
Significant Difference ◽  
The Difference ◽  
The Impact ◽  
Different Growth Stages

A field experiment was conducted to study the impact of topping at different growth stages (3-4, 6-7, 9-10 and 12-13 sympodial branches) on productivity of two (Tamcot SP-37 and H-777) cotton varieties under rainfed condition at the Kumbher Farm (Bardiya district) of Cotton Development Board in 1995. The experiment was laid out in a Randomized Complete Block Design with four replications. The interaction effect between variety and stages of topping showed that significantly higher yield (1.23 t/ha) was produced by topping plants at the stage of 12-13 sympodial banches of the variety Tamcot SP-37 as compared to all other treatments. At all stages of topping the yield produced by Tamcot SP-37 was significantly higher than H-777. The average seed cotton yield (1.03 t/ha) of Tamcot SP-37 was significantly higher than that of H- 777 (0.71 t/ha) and the difference in yield was 45.0%. The seed-cotton yield increased from 0.75 to 1.00 t/ ha with the postponed of topping from 3-4 to 12-13 sympodial branches, but significant difference was recorded between late (12-13 sympodial branches) and early (3-4 and 6-7 sympodial branches) stages of topping. Thus, for rainfed condition of Bardiya Tamcot SP-37 was a suitable variety with 12-13 sympodial branches as an appropriate stage of topping for sustainable production of cotton. Key words: Variety, topping, sympodial branches. J. Inst. Agric. Anim. Sci. 27:165-168 (2006)

scholarly journals Diagnosis and Recommendation Integrated System (DRIS) in Determining Mineral Status of Cotton in the Cotton Zones of Benin

2019 ◽  
pp. 1-13
Author(s):  
Isidore Amonmidé ◽  
Gustave D. Dagbénonbakin ◽  
P. B. Irénikatché Akponikpè ◽  
Emile C. Agbangba ◽  
Pierre G. Tovihoudji
Keyword(s):  
Nutrient Status ◽  
Nutrient Content ◽  
Integrated System ◽  
The Other ◽  
Chemical Characteristics ◽  
Cotton Yield ◽  
Seed Cotton ◽  
Seed Cotton Yield ◽  
Physical And Chemical ◽  
Made In

This study aimed at developing parameters of the Diagnosis and Recommendation Integrated System (DRIS) model for the assessment nutrient status for cotton grown in Benin.. Soil physical and chemical characteristics, leaves nutrient content (N, P, K, Ca, Mg) and seed-cotton yield were assessed on samples gathered from 150 farmers’ fields in 2018. Nutrient indices were computed using standard DRIS procedures. Results showed that phosphorus was in excess in the petiole and the whole leaves but in deficit in the limb. Potassium content was adequate according in the petiole and leaves but deficient in the limb. Ca content was limiting in the limb or the whole leaves and adequate in the petiole. Based on the diagnosis made in the petioles, Mg was deficient while adequate in the limbs and leaves. In the limb, the order of the macronutrients is as follows: K> P> N. On the other side, in the petiole and the whole leaves, the order of the macronutrients becomes: P> K> N. In the whole leaves and limb, the order of the secondary elements is as follows: Mg> Ca, whereas in the petiole the order of the secondary elements becomes: Ca> Mg.

Interactions of Single Mepiquat Chloride Application at Different Growth Stages with Climate, Cultivar, and Plant Population for Cotton Yield

Crop Science ◽  
2017 ◽  
Vol 57 (3) ◽  
pp. 1713-1724 ◽  
Author(s):  
Wenchao Zhao ◽  
Mingwei Du ◽  
Dongyong Xu ◽  
Huaiyu Lu ◽  
Xiaoli Tian ◽  
...  
Keyword(s):  
Plant Population ◽  
Growth Stages ◽  
Cotton Yield ◽  
Mepiquat Chloride ◽  
Different Growth Stages

Cotton (Gossypium Hirsutum) Response to DPX-PE350 Applied Postemergence

1993 ◽  
Vol 7 (1) ◽  
pp. 159-162 ◽  
Author(s):  
David L. Jordan ◽  
Robert E. Frans ◽  
Marilyn R. McClelland
Keyword(s):  
Adverse Effect ◽  
Gossypium Hirsutum ◽  
Fiber Length ◽  
Field Experiments ◽  
Fiber Strength ◽  
Fiber Quality ◽  
Growth Stages ◽  
Cotton Yield ◽  
Seed Cotton ◽  
Over The Top

Field experiments were conducted from 1989 through 1991 to determine the effect of DPX-PE350 applied postemergence over-the-top on cotton yield and fiber quality. DPX-PE350, at rates ranging from 50 to 280 g ae ha−1applied to cotton in the VC to R6 growth stages, had no adverse effect on seed cotton yield, micronaire, fiber length, fiber length uniformity, or fiber strength. Cotton injury was 10% or less in all experiments.

Glyphosate Tolerance in Enhanced Glyphosate-Resistant Cotton (Gossypium hirsutum)

2010 ◽  
Vol 24 (3) ◽  
pp. 289-294 ◽  
Author(s):  
Jonathan A. Huff ◽  
Daniel B. Reynolds ◽  
Darrin M. Dodds ◽  
J. Trenton Irby
Keyword(s):  
Gossypium Hirsutum ◽  
Cotton Plant ◽  
Yield Loss ◽  
Growth Stages ◽  
Cotton Yield ◽  
Seed Cotton ◽  
Roundup Ready ◽  
Application Timing ◽  
Late Season ◽  
Commercial Use

Glyphosate applied to glyphosate-resistant (RR) cotton varieties after the four-leaf stage can decrease boll retention resulting in severe yield reductions. Enhanced glyphosate-resistant cotton (RR Flex), released for commercial use in 2006, offers a wider window of glyphosate applications without the risk of yield loss. However, no data exist regarding the effect of glyphosate application, especially late season applications, on fruit partitioning in RR Flex cotton. The objective of this research was to determine the effect of glyphosate rate and application timing on RR Flex cotton yield and fruit partitioning compared with current RR cotton. Studies were conducted during a 3-yr period (2004 to 2006), throughout the cotton growing regions of Mississippi. Roundup Ready (ST 4892 Bollgard/Roundup Ready [BR]) and Roundup Ready Flex (Mon 171 Enhanced Roundup Ready and ST 4554 Bollgard II/Roundup Ready Flex [B2RF]) cotton was planted, and glyphosate was applied at various rates and cotton growth stages. Data were collected using box mapping, a technique designed to depict yield partitioning on a cotton plant. RR Flex cotton yields were unaffected by glyphosate application timing or rate. Yields for ST 4892 BR were affected by application timings after the sixth leaf. ST 4892 BR had increased yield partitioning to position-three bolls and upper nodes with later application timings of glyphosate. Increases in seed cotton partitioned to higher nodes and outer fruiting positions were unable to compensate for fruit shed from innermost, lower fruiting sites. These data indicate that RR Flex cotton has excellent tolerance to late-season glyphosate applications.

scholarly journals ASSESSING THE IMPACTS OF CLIMATIC FACTORS ON COTTON YIELD AND ITS ECONOMIC INDICATORS

2021 ◽  
Vol 186 (2) ◽  
pp. 166-182
Author(s):  
Assem MOHAMED ◽  
Mona MAZE ◽  
Mohamed ABDELAZIZ ◽  
Alaa KHALIL
Keyword(s):  
Wind Speed ◽  
Relative Humidity ◽  
Solar Radiation ◽  
Climatic Factors ◽  
Economic Benefits ◽  
Economic Indicators ◽  
Growth Stages ◽  
Cotton Yield ◽  
Maximum Minimum ◽  
Different Growth Stages

Cotton is one of the strategic crops in Egypt. This article investigates the impacts of climatic factors and their variations on the cotton yield and its economic benefits during the period from 1998 to 2019. We chose the Kafr El-Sheikh Governorate, where cotton is one of the major planted crops, was chosen for the analysis. The climatic factors utilized were the maximum, minimum and average temperatures; relative humidity; solar radiation and wind speed. Precipitation was excluded, as Egypt depends mainly on irrigation. The climatic factors utilized influenced yield during different growth stages: wind speed showed an influence only on the germination stage, whereas temperature had a major impact before and at the maturity stages. The latter correlation was positive in July and negative in August and September. Relative humidity and solar radiation impacted on yield at different growth stages, with an almost positive correlation with solar radiation and both a positive and a negative correlation with relative humidity. For the study of the economic indicators of cotton, cotton data were taken for the whole Egyptian Governorate during the period 2005-2019. The study showed a decrease in the net return during the period from 2005 to 2015 that reached a loss (minus value) of 195 Egyptian pounds (LE) in 2015, followed by an increase during the period from 2016 to 2019 due to the increase in farm gate prices.

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