Mepiquat chloride effects on cotton yield and biomass accumulation under late sowing and high density

2018 ◽  
Vol 215 ◽  
pp. 59-65 ◽  
Author(s):  
Shahbaz Atta Tung ◽  
Ying Huang ◽  
Abdul Hafeez ◽  
Saif Ali ◽  
Aziz Khan ◽  
...  
Keyword(s):  
Biomass Accumulation ◽  
High Density ◽  
Cotton Yield ◽  
Mepiquat Chloride ◽  
Late Sowing

scholarly journals Cotton N rate could be reduced further under the planting model of late sowing and high-density in Yangtze River Valley

2020 ◽  
Author(s):  
xinghu song ◽  
Ying Huang ◽  
Yuan Yuan ◽  
Shahbaz Atta Tung ◽  
Biangkham Souliyanonh ◽  
...  
Keyword(s):  
Yangtze River ◽  
Growth Process ◽  
Biomass Accumulation ◽  
Yangtze River Valley ◽  
River Valley ◽  
High Density ◽  
Cropping Pattern ◽  
Cotton Yield ◽  
Process Yield ◽  
Late Sowing

Abstract Background: An optimal N rate is one of the basic determinants for high cotton yield. The purpose of this study was to determine the optimal N rate on a new cotton cropping pattern with late-sowing, high density and one-time fertilization at first flower in Yangtze River Valley China. A 2-year experiment was conducted in 2015 and 2016 with a randomized complete blocks design, and cotton growth process, yield and biomass accumulation were examined. Results: The results showed that N rate had no effect on cotton growing progress or periods. Cotton yield was increased with N rate increasing from 120-180 kg·hm-2, while the yield was not increased when N was beyond 180 kg·hm-2, or even decreased (9-29%). Cotton had the highest biomass at N180 due to its highest accumulation speed during the fast accumulation period (FAP). Conclusions: The result suggests that cotton N rate could be reduced further to be 180 kg·hm-2 under the new cropping pattern in Yangtze River Valley China.

scholarly journals Cotton N rate could be reduced further under the planting model of late sowing and high-density in Yangtze River Valley

2020 ◽  
Author(s):  
xinghu song ◽  
Ying Huang ◽  
Yuan Yuan ◽  
Shahbaz Atta Tung ◽  
Biangkham Souliyanonh ◽  
...  
Keyword(s):  
Yangtze River ◽  
Growth Process ◽  
Biomass Accumulation ◽  
Yangtze River Valley ◽  
River Valley ◽  
High Density ◽  
Cropping Pattern ◽  
Cotton Yield ◽  
Process Yield ◽  
Late Sowing

Abstract Background An optimal N rate is one of the basic determinants for high cotton yield. The purpose of this study was to determine the optimal N rate on a new cotton cropping pattern with late-sowing, high density and one-time fertilization at first flower in Yangtze River Valley China. A 2-year experiment was conducted in 2015 and 2016 with a randomized complete blocks design, and cotton growth process, yield and biomass accumulation were examined. Results The results showed that N rate had no effect on cotton growing progress or periods. Cotton yield was increased with N rate increasing from 120–180 kg ha− 1, while the yield was not increased when N was beyond 180 kg ha− 1, or even decreased (9–29%). Cotton had the highest biomass at N180 due to its highest accumulation speed during the fast accumulation period (FAP). Conclusions The result suggests that cotton N rate could be reduced further to be 180 kg ha− 1 under the new cropping pattern in Yangtze River Valley China.

scholarly journals Cotton N rate could be reduced further under the planting model of late sowing and high-density in the Yangtze River valley

2020 ◽  
Vol 3 (1) ◽  
Author(s):  
Xinghu SONG ◽  
Ying HUANG ◽  
Yuan YUAN ◽  
Atta Tung SHAHBAZ ◽  
Souliyanonh BIANGKHAM ◽  
...  
Keyword(s):  
Yangtze River ◽  
Block Design ◽  
Yangtze River Valley ◽  
River Valley ◽  
High Density ◽  
Cropping Pattern ◽  
The Yangtze River ◽  
Cotton Yield ◽  
N Rates ◽  
Late Sowing

Abstract Background An optimal N rate is one of the basic determinants for high cotton yield. The purpose of this study was to determine the optimal N rate on a new cotton cropping pattern with late-sowing, high density and one-time fertilization at the first flower period in Yangtze River Valley, China. A 2-year experiment was conducted in 2015 and 2016 with a randomized complete block design. The cotton growth process, yield, and biomass accumulation were examined. Results The results showed that N rates had no effect on cotton growing progress or periods. Cotton yield was increased with N rates increasing from 120 to 180 kg·hm−2, while the yield was not increased when the N rate was beyond 180 kg·hm−2, or even decreased (9∼29%). Cotton had the highest biomass at the N rate of 180 kg·hm−2 is due to its highest accumulation speed during the fast accumulation period. Conclusions The result suggests that the N rate for cotton could be reduced further to be 180 kg·hm− 2 under the new cropping pattern in the Yangtze River Valley, China.

scholarly journals High density cultivation for efficient sesquiterpenoid biosynthesis in Synechocystis sp. PCC 6803

2020 ◽  
Vol 10 (1) ◽  
Author(s):  
Dennis Dienst ◽  
Julian Wichmann ◽  
Oliver Mantovani ◽  
João S. Rodrigues ◽  
Pia Lindberg
Keyword(s):  
Reference Conditions ◽  
Value Added ◽  
Biomass Accumulation ◽  
High Density ◽  
Specific Productivity ◽  
Batch Mode ◽  
Process Characteristics ◽  
Sustainable Cultivation ◽  
Pcc 6803

AbstractCyanobacteria and microalgae are attractive photoautotrophic host systems for climate-friendly production of fuels and other value-added biochemicals. However, for economic applications further development and implementation of efficient and sustainable cultivation strategies are essential. Here, we present a comparative study on cyanobacterial sesquiterpenoid biosynthesis in Synechocystis sp. PCC 6803 using a commercial lab-scale High Density Cultivation (HDC) platform in the presence of dodecane as in-situ extractant. Operating in a two-step semi-batch mode over a period of eight days, volumetric yields of (E)-α-bisabolene were more than two orders of magnitude higher than previously reported for cyanobacteria, with final titers of 179.4 ± 20.7 mg * L−1. Likewise, yields of the sesquiterpene alcohols (−)-patchoulol and (−)-α-bisabolol were many times higher than under reference conditions, with final titers of 17.3 ± 1.85 mg * L−1 and 96.3 ± 2.2 mg * L−1, respectively. While specific productivity was compromised particularly for (E)-α-bisabolene in the HDC system during phases of high biomass accumulation rates, volumetric productivity enhancements during linear growth at high densities were more pronounced for (E)-α-bisabolene than for the hydroxylated terpenoids. Together, this study provides additional insights into cell density-related process characteristics, introducing HDC as highly efficient strategy for phototrophic terpenoid production in cyanobacteria.

Effect of fertilization frequency on cotton yield and biomass accumulation

2012 ◽  
Vol 125 ◽  
pp. 161-166 ◽  
Author(s):  
Guozheng Yang ◽  
Haoyue Tang ◽  
Jun Tong ◽  
Yichun Nie ◽  
Xianlong Zhang
Keyword(s):  
Biomass Accumulation ◽  
Cotton Yield

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

scholarly journals Foliar Application of Organic Compounds Stimulate Cotton (Gossypium barbadense L.) to Survive Late Sown Condition

2018 ◽  
Vol 3 (1) ◽  
pp. 684-697 ◽  
Author(s):  
Ayman El Sabagh ◽  
Abdelhamid M. Omar ◽  
Mohamed El Menshawi ◽  
Samir El Okkiah
Keyword(s):  
Organic Compounds ◽  
Foliar Application ◽  
Dry Weight ◽  
Sowing Date ◽  
Cotton Yield ◽  
Seed Cotton ◽  
Quality Properties ◽  
Seed Cotton Yield ◽  
Sowing Dates ◽  
Late Sowing

Abstract Application of organic compounds in cotton balances its vegetative and reproductive growth, as well as to improve the seed cotton yield and lint quality properties. Field experiments were conducted with some organic compounds to determine their effects on cotton yield and quality properties of cotton under two sowing times.The experiment was conducted at Sakha Agricultural Research Station, Cotton Research Institute, Egypt in 2015 and 2016. In these studies, two sowing times viz. optimum and delay sowing and two levels (200 and 400 ppm) of organic compounds viz. ascorbic, ascobine and salicylic acids were used. The results indicated that the optimum sowing date gave the largest area of single leaf at 90 and 120 DAS, as well as it induced an increase in dry weight (g) of plant organs at 120 DAS, while, the late sowing significantly reduced the leaves dry weight both at 90 and 120 DAS. Both seed cotton yield and lint cotton yield (kentar feddan-1) were significantly increased in optimum sowing condition and sharply declined as delayed sowing date. The number of opened bolls plant-1 were also significantly reduced in late sowing. Lint percentage, seed index and seed cotton weight boll-1 were also significantly affected by sowing dates. Leaf pigment (total chlorophyll) was significantly affected by sowing date recorded at 90 and 120 DAS, while lower values of total chlorophyll was recorded in late sown plants. Also, sowing dates had no significant effect on both oil and protein seed content. This study has shown that timely sowing of cotton seed and foliar application of ascorbic acid, ascobine or salicylic acid with concentration of 200 or 400 ppm at flower initiation stage and peak of flowering stage had significant positive effects on seed cotton yield and lint quality properties. According to these results it can be suggested that usage of organic compounds to improve the yield and quality properties, especially in late sowing for ‘Giza 94' cotton cultivar at Kafr- Elsheikh district, Egypt.

scholarly journals Nitrogen and mepiquat chloride can affect fiber quality and cotton yield

2020 ◽  
Vol 24 (4) ◽  
pp. 238-243
Author(s):  
Aguinaldo J. F. Leal ◽  
Gabriel L. Piati ◽  
Rafael C. Leite ◽  
Mayara S. Zanella ◽  
Christian R. W. S. Osorio ◽  
...  
Keyword(s):  
Color Index ◽  
Fiber Quality ◽  
Short Fiber ◽  
Harvest Time ◽  
Cotton Yield ◽  
Gossypium Hirsutum L ◽  
Mepiquat Chloride ◽  
Green Color ◽  
N Dose ◽  
Lower Height

ABSTRACT The use of mepiquat chloride (MC) in cotton (Gossypium hirsutum L.) cultivation has increased significantly in recent years. The use of MC, a growth regulator, results in higher precocity and lower height and consequently increases yield and reduces crop costs. The objective of this study was to evaluate the effects of nitrogen (N) and MC doses on fiber quality and cotton yield. This study was conducted during the 2012/13 and 2013/14 harvests in the experimental area of the Fundação de Apoio à Pesquisa Agropecuária de Chapadão, located in the municipality of Chapadão do Sul, MS, Brazil, at 18° 48’ 45.9” S, 52° 36’ 3” W, having an altitude of 820 m. The experimental design was a randomized blocks in a 5 × 4 factorial scheme comprised of five N doses (0, 40, 80, 120, 160 kg ha-1) and four MC doses (0, 50, 100, 150 mL ha-1) with four repetitions. Analyses of fiber quality included: length, uniformity, elongation, strength, micronaire index, reflectance, yellowing degrees and short fiber content. Regarding cotton yield, green color index (GCI), plant height at harvest time, and cotton seed yield were determined. The best results for fiber quality and productivity occurr with the application of 76.8 mL ha-1 of MC to the cotton crops when the N dose is greater than 80 kg ha-1. Increasing N doses causes an increase in cotton yield and micronaire index, but there is a decrease in fiber uniformity.

scholarly journals Impact of harvest-aid defoliants on yield and economics of high density cotton

2019 ◽  
Author(s):  
Kancheti Mrunalini ◽  
M. Sree Rekha ◽  
V.R.K Murthy ◽  
K. Jayalalitha
Keyword(s):  
Field Experiment ◽  
Growth Parameters ◽  
High Density ◽  
Cotton Yield ◽  
Seed Cotton ◽  
Seed Cotton Yield ◽  
Harvest Aid

A field experiment was conducted to study the effect of chemical defoliation on growth parameters, seed cotton yield and economics of cotton under high density planting during kharif, 2016. Defoliation with Etherel @ 2000 ppm at 60 boll opening percentage resulted in higher number of picked bolls plant-1 and boll opening percentage and seed cotton yield (2359 kg ha-1). At harvest, significantly highest drymatter accumulation was recorded with Urea @ 15% (T6) (22692 kg ha-1). Dropp Ultra 560 SC (Thidiazuron 360 + Diuron 180) @ 200 ml/ha recorded significantly higher leaf defoliation (99.7 %) and was superior over other defoliants tried. Application of defoliants i.e., Dropp Ultra and Etherel at 60 BOP resulted in reduction of crop duration by 20 days.

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