Productivity of BT and Non BT Cotton (Gossypium hirsutum L.)  Cultivars as Influenced by Plant Geometry and Fertilizer Levels

Nagender, T.; Reddy, D. Sreekantha; Rani, Pooja; Sreenivas, G.; Surekha, K.; Gupta, Akhilesh; Sreekanth, P. D.

doi:10.20546/ijcmas.2017.609.395

Cited by 3 publications

(5 citation statements)

References 5 publications

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“…However, closer plants spacing of 90x45cm compensate per plant yield losses and recorded significantly higher seed cotton yield over wider spacing of 90x60cm. Similar result was also reported by Munir et al (2015) [27] and Nagender et al (2017) [28] . The application of 75:37.5:37.5kg NPK ha-1 recorded significantly higher seed cotton yield per plant and per ha over 50:25:25kg NPK ha-1 but was found to be at par with 62.5:31.25:31.25kg NPK ha-1.…”

Section: Seed Cotton Yieldsupporting

confidence: 91%

“…This indicates that narrow spaced cotton plant produced maximum leaf area per unit land area over wider spaced cotton plant. Nagender et al (2017) [28] also reported significantly highest LAI under closest plant spacing than wider. Each increase in the NPK level resulted in significant increase in LAI over its preceding lower level at all the stages of observations.…”

Section: Leaf Area Index (Lai)mentioning

confidence: 92%

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Square formation, boll retention, yield and quality parameters of Bt and non-Bt cotton in relation to plant density and NPK levels

Thakur¹

2020

Int. J. Chem. Stud.

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A Two year experiment was conducted to study the effect of plant densities and NPK levels on Bt and non-Bt cotton in split plot with four replications. The result shows that non-Bt cotton produced taller plant, more monopodia and sympodia, higher leaf area index (LAI). Whereas, Bt cotton had maximum specific leaf weight (SLW), net assimilation rate (NAR), square formation rate (SFR), fruit production efficiency (FPE), boll retention efficiency (BRE), boll growth rate, yield attributes and thus produced higher seed cotton yield than non-Bt. Bt cotton minimized the boll maturation period and impart earliness in cotton. The Bt cotton enhanced ginning out turn whereas, staple length and micronaire value remained higher in non-Bt. As regards plant density, spacing of 90x60cm recorded more monopodia and sympodia, maximum SLW, NAR, SFR, BRE, picked bolls and seed cotton yield per plant than 90x45cm. On contrary higher plant density under 90x45cm spacing increased plant height, LAI, FPE and seed cotton yield per ha. Each increased level of NPK significantly increased plant height, number of monopodia, sympodia and LAI over lower level. The application of 75:37.5:37.5kg NPK ha -1 significantly increased SLW, NAR, SFR, FPE, BRE, boll growth rate, boll weight, picked bolls, seed cotton yield per ha and augment the lint quality traits like uniformity ratio and micronaire value over lowest level of NPK i.e. 50:25:25kg NPK ha -1 . However, lowest level of NPK improved the lint elongation.

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Section: Seed Cotton Yieldsupporting

confidence: 91%

Section: Leaf Area Index (Lai)mentioning

confidence: 92%

Square formation, boll retention, yield and quality parameters of Bt and non-Bt cotton in relation to plant density and NPK levels

Thakur¹

2020

Int. J. Chem. Stud.

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“…These findings can be beneficial to formulation of a scientific and rational package for usage of nutrients in sustainable cotton production in line with Luo et al (2018). Cost of cultivation has been remarkably escalated with each successive increase in nutrient levels, though gross and net returns remained at par is in agreement with Nagender et al (2017) who could not achieve significant effect of varied nutrition levels on gross and net returns. Contrarily, Biradar et al (2010) observed better monetary returns in cotton grown under elevated level of nutrition (150%) than 100% recommended level which strengthens the fact that response varies with soil fertility status, irrigation and cultivation practices.…”

mentioning

confidence: 89%

“…For a crop like cotton, nutrition and plant population assumes greater importance (Dong et al, 2012). Bt cotton hybrids being exhaustive, require ample soil nutrients (Nagender et al, 2017). Moreover, attention for nutrient management is crucial since continuous cropping system is prevalent in northwestern India (Brar et al, 2008).…”

Section: Introductionmentioning

confidence: 99%

Planting geometry and nutrient levels affecting seed cotton yield, productivity indices and economic parameters of Bt cotton (Gossypium hirsutum L.)

Singh¹,

Rathore²

2020

JEB

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Aim: Lack of location specific information on nutrition requirement and planting geometry needs of Bt cotton hybrids is creating confusion among farmers. Growing Bt hybrids with traditional knowledge or to try different combinations of nutrition and planting geometries is often non-remunerative. Therefore, studies were initiated to find out the optimum combination of planting geometry and nutritional level for better yield to be advocated among farmers. Methodology: A field experiment comprising of 4 planting geometries (PG1 :67.5 cm x 60 cm, PG2: 67.5 cm x 75 cm, PG3:100 cm x 45 cm and PG4: 100 cm x 60 cm) in main and 3 nutrient levels {NL1 :150:30:50:25 (N: P :K :Zn in kg ha-1), NL2:150:40:20:24 and NL3 :175:60:60:25} in sub plots of split plot design was conducted during 2016 and 2017 at Faridkot. Results: Among planting geometries, PG3 (3303 kg ha-1) recorded the highest seed cotton yield (SCY), while PG4 (2728 kg ha-1) recorded least despite highest bolls per plant. Though nutrition levels varied non-significantly for SCY, yet NL2 exhibited better fertilizer use efficiency (FUE), i.e., 13.64, indicative of its advantages over NL1 (11.93) and NL3 (9.77). Interpretation: Thus, based on the present study a PG of 67.5x75 cm and NL of 150:40:20:24 ( N: P :K :Zn in kg ha-1) is recommended. Productivity indices as well as economic parameters elucidate that nutrition rates could be further reduced by 86 kg ha-1 (i.e., 25:20:40:1 kg of N, P, K and Zn) which amount to 33 $ ha-1 from what farmers (NL3) are applying, without any yield loss. Present findings can reduce fertilizer cost and could save 0.13 million ton of fertilizer in ~1.54 million ha of north India alone.

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“…, Biradar et al[14], Manjunatha et al[15], Devraj et al[16], Shukla et al[17], Malavath et al[18], Basavaraj et al[19], Charjan et al[20], Kumar et al[21], Madavi et al[22], Nagender et al[23], Udikeri and Shashidhara[24], Hargilas and Saini[25], Hiwale et al[26] and Malavth et al[27].…”

mentioning

confidence: 99%

Sowing Time and Spacing Influenced Yield, Quality and Economics of Bt Cotton (Gossypium hirsutum L.)

Patel,

Patel

2023

IJECC

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A field study was conducted in the 2019 kharif season at the Agronomy Instructional Farm, SDAU, SKNagar, Gujarat, India. To investigate that the sowing time and spacing influenced yield, quality and economics of Bt cotton (Gossypium hirsutum L.) in loamy sand soil. Twelve treatment combinations were examined, involving three sowing times (T1: 3rd week of May, T2: 1st week of June, T3: 3rd week of June) and four plant spacings (S1: 90 cm × 60 cm, S2: 90 cm × 45 cm, S3: 60 cm × 60 cm, S4: 60 cm × 45 cm). Four replications of a split plot design were used for the experiment. The third week of May was consistently the best time to sow cotton, according to the results, producing the maximum yields of seed cotton and stalk cotton. The quantity of monopodial branches/plant, harvest index and plant population as well as quality parameters such as oil content and ginning percentage were not significantly impacted by sowing time. The 3rd week of May sowing also yielded the highest benefit cost ratio and net realization. In terms of plant spacing, the spacing of 60 cm × 45 cm promoted highest plant population, taller plants and increased yield attributes like the bolls/plant, boll weight and seed cotton yield/plant. The highest seed cotton yield and stalk yield were achieved with this spacing. Harvest index and quality parameters were unaffected by plant spacing. The narrow spacing of 60 cm × 45 cm also resulted in the highest benefit cost ratio and net realization. The interaction effect between sowing time and plant spacing did not significantly influence growth, yield, yield attributes and quality parameters of Bt cotton.

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Productivity of BT and Non BT Cotton (Gossypium hirsutum L.) Cultivars as Influenced by Plant Geometry and Fertilizer Levels

Cited by 3 publications

References 5 publications

Square formation, boll retention, yield and quality parameters of Bt and non-Bt cotton in relation to plant density and NPK levels

Square formation, boll retention, yield and quality parameters of Bt and non-Bt cotton in relation to plant density and NPK levels

Planting geometry and nutrient levels affecting seed cotton yield, productivity indices and economic parameters of Bt cotton (Gossypium hirsutum L.)

Sowing Time and Spacing Influenced Yield, Quality and Economics of Bt Cotton (Gossypium hirsutum L.)

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