Effect of different organic sources and PGR on growth and chlorophyll content in organic cotton under rainfed condition

Abstract

Field experiment was carried out during 2016 and 2017 to study the effect of organic sources on growth parameter of organic cotton under rainfed condition at Cotton Research Unit, Dr. Panjabrao Deshmukh Krishi Vidyapeeth, Akola during kharif season. The treatments consist of Absolute control (no organic/ Inorganics), recommended dose of nutrient through organics on P equivalent basis (FYM @12.5t ha-1), seed treatment (ST) of biofertilizer + foliar application of pink pigmented facultative metylobacterium (PPFM) @1 % at flowering (FL) & boll development (BD), Neem cake (NC) @ 250 kgha-1, green manuring of sunhemp (GMS) in between cotton rows (1:1), intercrop with blackgram (1:1), ST + PPFM @1 % at FL & BD+ NC, ST + PPFM @1 % at FL & BD + cotton+ sunhemp (GMS) (1:1), ST+ PPFM @1 % at FL & BD+ NC + cotton+ sunhemp (GMS) (1:1) and ST + PPFM @1 % at FL & BD+ NC + Intercrop with blackgram (1:1). The experimental soil was vertisol with clay loam in texture, low in available nitrogen (175.6 kg ha-1), medium in available phosphorus (15.10 kg ha-1) and very high in potassium content (375.4 kg ha-1). The soil pH, EC and organic carbon were 8.08, 0.34 dSm-1 and 3.80 g kg-1, respectively. The results revealed that among the different nutrient management through organic sources, the growth attributing characters viz. plant height, number of functional leaves and drymatter accumulation plant-1 at different growth stages were observed significantly highest with application of recommended dose of nutrient through organics on P equivalent basis (FYM @ 12.5 t ha-1). However, the chlorophyll content was more in ST+ PPFM @1 % at FL & BD+ NC + cotton + sunhemp (GMS) being statistically at par with application of RD of nutrient through organics on P equivalent basis (FYM @ 12.5 t ha-1).

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Claims 2

Intervention effectobservedoriginal resultpositivesignificant (as stated)measured

Claim · model-written summary

FYM at 12.5 t ha-1 gave the highest plant height, functional leaf number and dry matter accumulation.

Taxon: organic cottont0
Organ / stage: different growth stagese0
Treatment: recommended dose of nutrient through organics on P equivalent basis (FYM @ 12.5 t ha-1)e0
Outcome: plant height, number of functional leaves and drymatter accumulation plant-1e0
Direction: higheste0

Not reportedComparator

Verbatim

t0
“organic cotton”
✓ located verbatim in the source · title, characters 81–95 · show in text ↑

e0
“the growth attributing characters viz. plant height, number of functional leaves and drymatter accumulation plant-1 at different growth stages were observed significantly highest with application of recommended dose of nutrient through organics on P equivalent basis (FYM @ 12.5 t ha-1)”
✓ located verbatim in the source · abstract, characters 1286–1572 · show in text ↑

Intervention effectobservedoriginal resultpositivenot significant (as stated)measured

Claim · model-written summary

The combined seed treatment, PPFM, neem cake and sunhemp treatment had more chlorophyll and was statistically at par with FYM.

Taxon: organic cottont0
Treatment: ST+ PPFM @1 % at FL & BD+ NC + cotton + sunhemp (GMS)e0
Outcome: chlorophyll contente0
Direction: moree0
Comparator: RD of nutrient through organics on P equivalent basis (FYM @ 12.5 t ha-1)e0

Verbatim

t0
“organic cotton”
✓ located verbatim in the source · title, characters 81–95 · show in text ↑

e0
“the chlorophyll content was more in ST+ PPFM @1 % at FL & BD+ NC + cotton + sunhemp (GMS) being statistically at par with application of RD of nutrient through organics on P equivalent basis (FYM @ 12.5 t ha-1)”
✓ located verbatim in the source · abstract, characters 1583–1793 · show in text ↑

botanical · physiology: pigments · Gossypium hirsutum (cotton)Positive and negative results

3 papers: 2 positive, 1 negative or no effect

1 paper in the same direction as this paper · 1 in the opposite direction

negative
Extract in hydroponic culture reduced cotton chlorophyll content.
Allelopathy and Chemical Constituents of Decomposing Products from Cotton Stalk · 2009
Opposite direction
positive
Integrated vermicompost and cyanobacteria extract significantly increased chlorophyll a and b and carotenoid content in cotton compared with the control.
Mitigating Osmotic Stress and Enhancing Developmental Productivity Processes in Cotton through Integrative Use of Vermicompost and Cyanobacteria · 2023 · compared with the studied control
Same direction

See all 3 papers →

fertilization · physiology: pigments · Gossypium hirsutum (cotton)Positive and negative results

31 papers: 30 positive, 1 negative or no effect

29 papers in the same direction as this paper · 1 in the opposite direction

negative
Potassium deficiency reduced cotton leaf chlorophyll and carotenoid content.
How potassium deficiency alters flower bud retention on cotton (Gossypium hirsutum L.) · 2018 · compared with normal K
Opposite direction
positive
CRU increased leaf SPAD values.
Controlled‐release urea decreased ammonia volatilization and increased nitrogen use efficiency of cotton · 2017
Same direction
positive
Integrated vermicompost and cyanobacteria extract significantly increased chlorophyll a and b and carotenoid content in cotton compared with the control.
Mitigating Osmotic Stress and Enhancing Developmental Productivity Processes in Cotton through Integrative Use of Vermicompost and Cyanobacteria · 2023 · compared with the studied control
Same direction

27 papers more in this group

See all 31 papers →

fertilization · growth · Gossypium hirsutum (cotton)Positive and negative results

202 papers: 177 positive, 25 negative or no effect

176 papers in the same direction as this paper · 23 in the opposite direction · 2 reporting no difference from an alternative

positive
Site-specific 100% NPK significantly increased plant height and branch counts.
Impact of different nutrient management strategies on growth, yield components and yield of coloured cotton (Gossypium hirsutum L.) cv. Vaidehi 1 · 2025
Same directionCites this paper
negative
Higher nitrogen rates increased cotton plant height by up to 3.2 inches.
Nitrogen and Mepiquat Chloride Effects on the Production of Nonrank, Irrigated, Short‐Season Cotton · 1994
Opposite direction
no effect
Phosphorus fertilizer essentially did not affect root elongation under drought.
Simultaneously maximizing root/mycorrhizal growth and phosphorus uptake by cotton plants by optimizing water and phosphorus management · 2018
Opposite direction

198 papers more in this group

See all 202 papers →

stage · physiology: pigments · Gossypium hirsutum (cotton)Results agree

3 papers: 3 positive, 0 negative or no effect

2 papers in the same direction as this paper

See all 3 papers →

seed treatment · physiology: pigments · Gossypium hirsutum (cotton)Results agree

4 papers: 4 positive, 0 negative or no effect

3 papers in the same direction as this paper

positive
Seed treatment with thiamethoxam increased chlorophyll content during the development of cotton plants.
Physiological response of cotton seeds treated with thiamethoxam under heat stress · 2016
Same direction
positive
Seed coating with living S. globisporus Act7 increased leaf greenness of cotton seedlings relative to the control.
Effects of Seed-Coating Preparations of Living Streptomyces globisporus on Plant Growth Promotion and Disease Control against Verticillium Wilt in Cotton · 2021 · compared with the control
Same direction
positive
Imidacloprid seed treatment followed by spray gave higher chlorophyll content.
Effect of Seed Treatment and Sprays Formulations on Morpho-Physiological Traits of Bt Cotton and their Impact on Dynamics of Sucking Pests · 2018
Same direction

See all 4 papers →

Claims are grouped by organism, treatment and what was measured or targeted. A paper counts as positive when any of its claims in the group is positive.