scholarly journals Soil applied potassium improves productivity and fiber quality of cotton cultivars grown on potassium deficient soils

PLoS ONE ◽  
2021 ◽  
Vol 16 (4) ◽  
pp. e0250713
Author(s):  
Shabir Hussain ◽  
Hakoomat Ali ◽  
Syed Tahir Raza Gardezi
Keyword(s):  
Growth Parameters ◽  
Abiotic Factors ◽  
Fiber Quality ◽  
Bt Cotton ◽  
Cotton Yield ◽  
Seed Cotton ◽  
Seed Cotton Yield ◽  
K Fertilizer ◽  
Improper Use

Cotton (Gossypium hirsutum L.) is considered as the most valuable cash crop of Pakistan. During last decade, its yield has been declined due to various biotic and abiotic factors. Among abiotic factors, improper use of fertilizers is considered very important specially regarding plant defense and yield. This study was conducted to evaluate the effect of different levels (0, 40, 80 and 120 kg ha-1) of K fertilizer (K2O) on different growth parameters of two commercial Bt cotton cultivars (CYTO-301 and IUB-2013) and one non-Bt cultivar (CYTO-142) during 2016 and 2017. Maximum plant height (124–134 cm), dry matter contents (915–1005%), fruiting point (441–462), bolls per plant (96–139), average boll weight (4.2–5.2 g) and seed cotton yield (2524–3175 kg ha-1) and minimum shedding (43–73%) were observed in plots receiving highest dose of K (120 kg ha-1). The CYTO-103 cultivar was found more responsive to K fertilizer as compared to rest of cultivars (CYTO-142 and IUB-2013). Concluding, ideal dose of fertilizer is very important (120 kg ha-1 in our case) for optimum growth and production of good quality fiber with enhanced seed cotton yield.

scholarly journals Early maturing Bt cotton requires more potassium fertilizer under water deficiency to augment seed-cotton yield but not lint quality

2019 ◽  
Vol 9 (1) ◽  
Author(s):  
Ahmad Naeem Shahzad ◽  
Muhammad Rizwan ◽  
Malik Ghulam Asghar ◽  
Muhammad Kamran Qureshi ◽  
Syed Asad Hussain Bukhari ◽  
...  
Keyword(s):  
Bt Cotton ◽  
Cotton Yield ◽  
Water Deficiency ◽  
Seed Cotton ◽  
Potassium Fertilizer ◽  
Seed Cotton Yield ◽  
Early Maturing

scholarly journals Evaluation of yield, yield components and incidence of CLCV disease through planting times and varietal interaction in cotton in the Multan region

2019 ◽  
Vol 1 (1) ◽  
pp. 33
Author(s):  
Salma Naimatullah
Keyword(s):  
Plant Height ◽  
Yield Components ◽  
Bt Cotton ◽  
Cotton Yield ◽  
Seed Cotton ◽  
Sowing Time ◽  
Seed Cotton Yield ◽  
Boll Weight

Five Bt cotton varieties were evaluated for five different parameters (plant height, number of bolls per plant, boll weight, seed cotton yield and CLCV incidence after 105 days of planting) under six different sowing times (01 March, 15 March, 01 April, 15 April, 01 May and 15 May) at CCRI, Multan during the year 2018.Results revealed highly significant differences among the varieties, sowing times and their interaction for all the traits under study. Regarding sowing times, highest yield (3676 kg/ha) was produced when the sowing was done on 01 March followed by March 15 sowing (3496 kg/ha) with 4.3 and 6.1 CLCuV incidence% respectively after 105 days of sowing.However, lowest yield of 2483 kg/ha was achieved through 15 May planting with 96.7% CLCuV incidence. Regarding varietal performance, CYTO-313 excelled all other varieties by producing 3356 kg/ha seed cotton yield followed by CIM-343 (3195 kg/ha) with CLCuV percent incidence of 53.1 and 50.9 respectively at 105 days of planting.It was concluded from the present investigations that first March sowing is the optimum sowing time with zero percent CLCuV incidence for Multan region. Furthermore, variety CYTO-313 should be given primacy on other four varieties when farmer is going to adopt first March sowing.

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.

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