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Phosphorus, Potassium and Phytohormones Promote Chlorophyll Production Differently in Two Cotton (Gossypium hirsutum) Varieties Grown in Hydroponic Nutrient Solution

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Listed:
  • Adebusoye Onanuga
  • Ping-an Jiang
  • Sina Adl

Abstract

The effectiveness of phosphorus (P), potassium (K), indole-3-acetic acid (IAA), gibberellic acid (GA3), zeatin (Z) and their combinations on chlorophyll a, b and total chlorophyll production was investigated in the hydroponic nutrient solution. The cotton plants were cropped without hormones application in different levels of P and K in the first cropping and with hormones application in the second cropping in high level of PK. In the first cropping, low K and high PK significantly influenced formation of chlorophyll a, b and ab from 83 to 91 days after planting (DAT) while the application of GA3, IAA, Z and IAA x GA3 x 2Z treatments significantly increased chlorophyll a, b and ab only at 80 DAT. However, two cotton varieties planted in two cropping seasons expressed different abilities in time to promote chlorophyll formation.

Suggested Citation

  • Adebusoye Onanuga & Ping-an Jiang & Sina Adl, 2012. "Phosphorus, Potassium and Phytohormones Promote Chlorophyll Production Differently in Two Cotton (Gossypium hirsutum) Varieties Grown in Hydroponic Nutrient Solution," Journal of Agricultural Science, Canadian Center of Science and Education, vol. 4(2), pages 157-157, February.
    • Handle: RePEc:ibn:jasjnl:v:4:y:2012:i:2:p:157
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    JEL classification:

    • R00 - Urban, Rural, Regional, Real Estate, and Transportation Economics - - General - - - General
    • Z0 - Other Special Topics - - General

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