The effect of harmonic frequency and sound intensity on the opening of stomata growth and yield of soybean (Glycine max (L.) Merrill)


Citation

Pujiwati Istirochah, . and Aini Nurul, . and Sakti Setyawan P., . and Guritno Bambang, . The effect of harmonic frequency and sound intensity on the opening of stomata growth and yield of soybean (Glycine max (L.) Merrill). pp. 975-986. ISSN 1511-3701

Abstract

Seventy percent of Indonesias soybean demands and consumption are met from imports and therefore it is necessary to increase its local production. This study assessed the effects of harmonic frequency and sound intensity levels on the opening of stomata the growth and yield of soybean. Experiments were conducted in a split plot design with frequency harmony (F4: 4 kHz F8: 8 kHz F12: 12 kHz) being the main plots and sound intensity (A50: 50 decibels (dB) A80: 80 dB and A110: 110 dB) used as sub plots. The results showed there was no significant effect of frequency and intensity on the measured response (stomata opening). However if they were compared with those at 0 frequency and 0 intensity the stomata openings were significantly different based on t-test at p 0.05. This means the opening of stomata was affected by resonance. In general the sound level pressure attempted in the range of 50-110 dB had no effect on the width of stomata opening but it affected to the growth and yield of soybean. The best growth of the leaf area and relative growth rate were in the presence of sound waves at a frequency of 4 kHz. Likewise the best result of the average fresh weight of seed dry weight of seed and harvest index were at a frequency of 4 kHz sound waves. The leaf area seeds fresh and dry weight and harvest index were also significantly highest at sound intensity of 50 dB. Therefore to improve the productivity of soybean plants exposure at a frequency of 4 kHz and sound intensity of 50 dB followed by an application of leaf fertiliser according to recommended dosage is the best combination of treatment in growing soybean in Indonesia.


Download File

Full text available from:

Abstract

Seventy percent of Indonesias soybean demands and consumption are met from imports and therefore it is necessary to increase its local production. This study assessed the effects of harmonic frequency and sound intensity levels on the opening of stomata the growth and yield of soybean. Experiments were conducted in a split plot design with frequency harmony (F4: 4 kHz F8: 8 kHz F12: 12 kHz) being the main plots and sound intensity (A50: 50 decibels (dB) A80: 80 dB and A110: 110 dB) used as sub plots. The results showed there was no significant effect of frequency and intensity on the measured response (stomata opening). However if they were compared with those at 0 frequency and 0 intensity the stomata openings were significantly different based on t-test at p 0.05. This means the opening of stomata was affected by resonance. In general the sound level pressure attempted in the range of 50-110 dB had no effect on the width of stomata opening but it affected to the growth and yield of soybean. The best growth of the leaf area and relative growth rate were in the presence of sound waves at a frequency of 4 kHz. Likewise the best result of the average fresh weight of seed dry weight of seed and harvest index were at a frequency of 4 kHz sound waves. The leaf area seeds fresh and dry weight and harvest index were also significantly highest at sound intensity of 50 dB. Therefore to improve the productivity of soybean plants exposure at a frequency of 4 kHz and sound intensity of 50 dB followed by an application of leaf fertiliser according to recommended dosage is the best combination of treatment in growing soybean in Indonesia.

Additional Metadata

[error in script]
Item Type: Article
AGROVOC Term: Soybeans
AGROVOC Term: Glycine max
AGROVOC Term: Field experiments
AGROVOC Term: Experimental design
AGROVOC Term: Plot design
AGROVOC Term: Sound waves
AGROVOC Term: Stomata
AGROVOC Term: Growth
AGROVOC Term: Plant growth substances
AGROVOC Term: Fertilizer application
Depositing User: Ms. Suzila Mohamad Kasim
Last Modified: 24 Apr 2025 06:29
URI: http://webagris.upm.edu.my/id/eprint/24794

Actions (login required)

View Item View Item
Agris UPM is powered by EPrints 3 which is developed by the School of Electronics and Computer Science at the University of Southampton. More information and software credits.