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DOI:

https://doi.org/10.56612/ijaaeb.v3i1.61

Effect of foliar application of naphthalene acetic acid on physio-morphological attributes and green biomass production of sorghum [Sorghum bicolor (L.) Moench.]

Authors

  • Iqtidar Hussain Department of Agronomy, Faculty of Agriculture, Gomal University, Dera Ismail Khan,Khyber Pakhtunkhwa, Pakistan

  • Muzafar Ali Department of Agronomy, Faculty of Agriculture, Gomal University, Dera Ismail Khan, Khyber Pakhtunkhwa, Pakistan

  • Midrar Ullah Department of Biotechnology, Shaheed Benazir Bhutto University, Sheringal Dir Upper, KP, Pakistan

Keywords:

Bioregulators, Fodder, Plant productivity, Growth promoters, Photosynthetic efficiency

Abstract

The present study was aimed to evaluate the impact of foliar application of naphthalene acetic acid (NAA) on the physio-morphological attributes and green biomass production of sorghum under field conditions at the Agronomic Research Field, Gomal University, Dera Ismail Khan, Pakistan. Varying concentrations of NAA (0, 45, 90, 135, and 180 mL ha-1) were applied to sorghum seedlings at different intervals [30 and 90 days after emergence (AE)]. All plots equally received recommended agronomic practices and crop protection measures. The NAA foliar application in different levels caused a significant influence on the growth and biomass production of sorghum. The maximum plant tallness (434.3 cm), plant leaf area (419 cm2), number of nodes (17.01 plant-1), number of tillers (19.03 m-2), and chlorophyll contents (56.97 µg cm-2) were observed due to NAA supplementation at 90 days AE, while, the stem thickness (8.82 cm), photosynthetic efficiency (2.56%) and green biomass (34.72 t ha-1) were observed in the plots which received the foliar spray of 180 mL ha-1 NAA followed by 135 mL ha-1, that showed improvement in plant tallness (423.1 cm), plant leaf area (402.07 cm2), number of nodes/plant (16.71), tiller numbers (189.81 m-2), chlorophyll contents (56.59 µg cm-2), stem thickness (8.69 cm), photosynthetic efficiency (2.56%) and green biomass (36.10 t ha-1) compared to those in the control treatment. The findings of the study clearly depict that foliar application of NAA as 120 mL ha-1 at 90 days AE showed promising results in terms of enhanced production of green biomass of sorghum under arid agro-ecological conditions of Pakistan.

Author Biographies

Iqtidar Hussain, Department of Agronomy, Faculty of Agriculture, Gomal University, Dera Ismail Khan,Khyber Pakhtunkhwa, Pakistan

The research activities were carried out under the supervision of Dr. Iqtidar Hussain. Data analysis, and manuscript draft preparation were carried out by Dr. Iqtidar Hussain

Muzafar Ali, Department of Agronomy, Faculty of Agriculture, Gomal University, Dera Ismail Khan, Khyber Pakhtunkhwa, Pakistan

Mr. Muzafar Ali was an MPhil Scholar and has conducted research under the supervision of DR. IQTIDAR HUSSAIN at the Department of Agronomy, Faculty of Agriculture, Gomal University, Dera Ismail Khan, Khyber Pakhtunkhwa, Pakistan.

Midrar Ullah, Department of Biotechnology, Shaheed Benazir Bhutto University, Sheringal Dir Upper, KP, Pakistan

Dr. Midrarullah helped in the preparation of the manuscript and data analysis

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Published

2024-01-02

How to Cite

Hussain, I., Ali, M., & Ullah, M. (2024). Effect of foliar application of naphthalene acetic acid on physio-morphological attributes and green biomass production of sorghum [Sorghum bicolor (L.) Moench.]. International Journal of Applied and Experimental Biology, 3(1), 75–82. https://doi.org/10.56612/ijaaeb.v3i1.61

Issue

Section

Plant Biology