Articles
INFLUENCE OF IRRIGATION REGIME ON SOME GROWTH CHARACTERISTICS AND WATER USE EFFICIENCY OF NATIVE COMMON BERMUDA GRASS (CYNODON DACTYLON) MAINTAINED AS TURFGRASS
Article number
1025_24
Pages
163 – 172
Language
English
Abstract
The effect of irrigation regime on some growth characteristics and water use efficiency (WUE) of the native common Bermuda grass was evaluated during dry season from January to May 2011 at the Horticultural Section, Faculty of Agriculture, Khon Kaen University, Thailand.
Rhizomes of native common Bermuda grass were planted in 4×1 m concrete blocks with open bottoms.
Four daily irrigation levels were applied as follows; 50, 75, 100 (control) and 125% of evaporation pan (Epan) or 0.50, 0.75, 1.00 and 1.25 Epan, respectively.
The randomized complete block design with four replications was used.
The results showed that 0.50 Epan irrigation had the lowest relative water content, fresh clip and dry clip biomasses, whereas it had the highest dry root biomass at soil profile 0-10 cm.
Moreover, the clip/root ratio at soil profile 0-10 cm and total soil profiles 0-30 cm exposed the lowest value in 0.50 Epan irrigation.
In addition, the relationship between dry clip biomass, irrigation amount (IR) and ratio IR/Epan (IE) were polynomial which had the highest biomass at 0.75 Epan irrigation, while the relationship between dry root biomass, IR and ratio IE showed a decreasing tendency with an increase in irrigation amount.
The WUE was found to be highest at 0.75 Epan irrigation level.
Rhizomes of native common Bermuda grass were planted in 4×1 m concrete blocks with open bottoms.
Four daily irrigation levels were applied as follows; 50, 75, 100 (control) and 125% of evaporation pan (Epan) or 0.50, 0.75, 1.00 and 1.25 Epan, respectively.
The randomized complete block design with four replications was used.
The results showed that 0.50 Epan irrigation had the lowest relative water content, fresh clip and dry clip biomasses, whereas it had the highest dry root biomass at soil profile 0-10 cm.
Moreover, the clip/root ratio at soil profile 0-10 cm and total soil profiles 0-30 cm exposed the lowest value in 0.50 Epan irrigation.
In addition, the relationship between dry clip biomass, irrigation amount (IR) and ratio IR/Epan (IE) were polynomial which had the highest biomass at 0.75 Epan irrigation, while the relationship between dry root biomass, IR and ratio IE showed a decreasing tendency with an increase in irrigation amount.
The WUE was found to be highest at 0.75 Epan irrigation level.
Authors
T. Mathowa, W. Chinachit, P. Yangyuen, S. Isarangkool Na Ayutthaya
Keywords
evaporation pan, evapotranspiration, soil moisture, crop coefficient
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