Light interception and yield response of cotton varieties to high density planting and fertilizers in sub-tropical India

Ajayakumar, M. Y.; Umesh, M.R.; Shivaleela, Shivaleela; Nidagundi, J. M.

doi:10.31018/jans.v9i3.1448

Cited by 9 publications

(10 citation statements)

References 6 publications

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“…This difference might be due to genetic potential of the plant. Similar result was reported by Ajayakumar et al (2017). Comparing plant spacings, the higher number of bolls per plant of 13.18 was significantly registered with 100 x 10 cm.…”

Section: Number Of Bolls Plant -1supporting

confidence: 89%

Effect of Cotton Varieties and Plant Spacing on Yield and Yield Components of Compact Type Cotton Under HDPS.

Anbarasan,

Ramesh,

Sudhakar

et al. 2023

SFS

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To improve productivity and profitability, it is important to investigate new strategies for cotton production. In April 2020, a field experiment was conducted to study the effect of different plant varieties and spacing on the growth and yield of compact-type cotton. The experiment followed a split-plot design with three replications, with four levels of cotton varieties (Suraj, Supriya, CO 15 and CO 17) in the main plots and seven levels of plant spacing (60 cm x 10 cm, 60 cm x 15 cm, 80 cm x 10 cm, 80 cm x 15 cm, 100 cm x 10 cm, 100 cm x 15 cm, and 75 cm x 30 cm) in the subplots. The results revealed that cotton variety CO 17 had been recorded significantly the highest yield and yield attributes, highest number of sympodial branches per plant and number of squares per plant counted higher when compared to other varieties. However, relative parameters the significantly highest number of bolls per plant counted and higher boll weight was recorded and maximum seed cotton yield harvested with CO 17 variety than others. Results revealed that the 100 x 10 cm plant spacing recorded the highest yield contributing characteristics, such as number of sympodial branches per plant, number of squares per plant and number of bolls per plant. Closer spacing has recorded a significantly higher number of bolls per plant; the highest single boll weight and maximum seed cotton yield were recorded. Among the interaction varieties, CO 17 with a 100 x 10 cm plant spacing registered higher number of sympodial branches per plant, number of squares per plant and number of bolls per plant for yield parameters, comparing to the yield CO 17 with 100 x 10 cm recorded higher seed cotton yield, higher number of bolls per plant and boll weight.

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Section: Number Of Bolls Plant -1supporting

confidence: 89%

Effect of Cotton Varieties and Plant Spacing on Yield and Yield Components of Compact Type Cotton Under HDPS.

Anbarasan,

Ramesh,

Sudhakar

et al. 2023

SFS

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“…Plant density is an important abiotic factor affecting cotton production [104] and has been evaluated in a number of studies [105][106][107][108]. According to Ajayakumar et al [109], an appropriate spacing between plants is an essential agronomic factor that influences optimal use of resources for increased crop productivity. In Venezuela, Guzman et al [105] assessed four sowing densities (62,500; 83,333; 100,000; and 142,857 plants per ha) on yield and its components of two cotton varieties and discovered high lint yield for "SN-2900" (4216.2 kg ha −1 ) at 100,000 plants per ha and for "Delta Pine 160" (3917.3 kg ha −1 ) at 83,333 plant per ha.…”

Section: Cotton Yield and Yield Components In Response To Plant Densitymentioning

confidence: 99%

Irrigation-Water Management and Productivity of Cotton: A Review

et al. 2021

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A decrease in water resources, as well as changing environmental conditions, calls for efficient irrigation-water management in cotton-production systems. Cotton (Gossypium sp.) is an important cash crop in many countries, and it is used more than any other fiber in the world. With water shortages occurring more frequently nowadays, researchers have developed many approaches for irrigation-water management to optimize yield and water-use efficiency. This review covers different irrigation methods and their effects on cotton yield. The review first considers the cotton crop coefficient (Kc) and shows that the FAO-56 values are not appropriate for all regions, hence local Kc values need to be determined. Second, cotton water use and evapotranspiration are reviewed. Cotton is sensitive to limited water, especially during the flowering stage, and irrigation scheduling should match the crop evapotranspiration. Water use depends upon location, climatic conditions, and irrigation methods and regimes. Third, cotton water-use efficiency is reviewed, and it varies widely depending upon location, irrigation method, and cotton variety. Fourth, the effect of different irrigation methods on cotton yield and yield components is reviewed. Although yields and physiological measurements, such as photosynthetic rate, usually decrease with water stress for most crops, cotton has proven to be drought resistant and deficit irrigation can serve as an effective management practice. Fifth, the effect of plant density on cotton yield and yield components is reviewed. Yield is decreased at high and low plant populations, and an optimum population must be determined for each location. Finally, the timing of irrigation termination (IT) is reviewed. Early IT can conserve water but may not result in maximum yields, while late IT can induce yield losses due to increased damage from pests. Extra water applied with late IT may adversely affect the yield and its quality and eventually compromise the profitability of the cotton production system. The optimum time for IT needs to be determined for each geographic location. The review compiles water-management studies dealing with cotton production in different parts of the world, and it provides information for sustainable cotton production.

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“…Lint% was calculated from lint yield of 100 bolls divided by seed cotton weight of 100 bolls. Boll retention rate (%) was calculated from the 10 tagged plants at node (1)(2)(3)(4)(5)(6)(7)(8)(9)(10)(11)(12)(13)(14)(15)(16) and fruiting position (1)(2)(3)(4) and then average of each point were taken.…”

Section: Yield and Yield Componentsmentioning

confidence: 99%

“…Proper spacing between plants is an important agronomic factor which affect optimal use of resources and increase crop productivity [6]. Plant density is a key factor for optimizing structure and increasing the photosynthetic capacity of the cotton canopy.…”

Section: Introductionmentioning

confidence: 99%

Plant Density Influences Reproductive Growth, Lint Yield and Boll Spatial Distribution of Cotton

et al. 2019

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The number of cotton plants grown per unit of ground area has gained attention due to the high prices of inputs and lower production. Cotton yield per unit of area in Henan province has been stagnant in the last few years. The objectives of this study were to investigate cotton growth, yield, boll spatial distribution and biomass accumulation using different plant densities at cultivation and to find out the optimal plant density. A 2-year field experiment was conducted in a randomized complete block design under six plant densities (D1, 15,000; D2, 33,000; D3, 51,000; D4, 69,000; D5, 87,000 and D6, 105,000 ha−1). Cotton grown at lower plant density produced taller plants and high number of leaves per plant while greater number of branches, fruiting nodes and high number of bolls per unit of ground area were produced under high plant density. Boll retention rate decreased as plant population increased and at nodes 1–8 the rate decreased slowly and then increased dramatically. The highest seed cotton yield (4546 kg ha−1) and lint yield (1682 kg ha−1) was produced by D5. The seed cotton and lint yield produced by D5 were 51–55%, 40–37%, 22–26%, 11–15%, 12–15%, 28–30%, 21–24%, 15–20%, 7–13% and 13–17% higher than D1, D2, D3, D4 and D6 during both years of experimentation, respectively. The increase in seed yield was due to higher biomass accumulation in reproductive organs under D5 plant density. The highest average (110.4 VA kg ha−1 d−1) and maximum (126 VM kg ha−1 d−1) rate of reproductive organs biomass was also accumulated by D5 as compared to other plant densities. The results suggest that D5 is the optimal plant density for high reproductive biomass accumulation and high yield for the area of Henan province.

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Light interception and yield response of cotton varieties to high density planting and fertilizers in sub-tropical India

Cited by 9 publications

References 6 publications

Effect of Cotton Varieties and Plant Spacing on Yield and Yield Components of Compact Type Cotton Under HDPS.

Effect of Cotton Varieties and Plant Spacing on Yield and Yield Components of Compact Type Cotton Under HDPS.

Irrigation-Water Management and Productivity of Cotton: A Review

Plant Density Influences Reproductive Growth, Lint Yield and Boll Spatial Distribution of Cotton

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