질소 시비 수준별 금잔디의 생육과 질소 시비량 설정
Establishment of a Standard Nitrogen Application Rate for Zoysia matrella Using Growth Responses to Various Fertilization Level
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BACKGROUND: Nitrogen (N) is an important element for turfgrass (Zoysia matrella) growth; however, standard N application rate for turfgrass is not established yet. This study was conducted to evaluate the effect of N applica-tion rates on the growth and quality of turfgrass for estab-lishment of standard N application rate. METHODS AND RESULTS: Treatments were as fol-lows; control (0 N g/m2/month), 1N (1 N g/m2/month), 2N (2 N g/m2/month), 3N (3 N g/m2/month), 4N (4 N g/m2/ month), and 5N (5 N g/m2/month). N application im-proved visual turfgrass quality. Compared with the con-trol, clipping yield of all N treatments increased by 90~ 194%. The grass shoot weight of 3N, 4N, and 5N treat-ments increased by 52%, 43%, and 111%, respectively, and the stolon weight of 4N and 5N treatments increased by 412% and 201%, respectively, compared to the control. The N uptake amount and N recovery rate were estimated to be 4.10~6.28 g/m2 and 14~58%, respectively. CONCLUSION(S): These results indicate that consider-ing visual quality, clipping yield, N uptake amount, and N recovery, the application rate of 2~3 N g/m2/month was suggested to be suitable for Z. matrella production.
Abstract
BACKGROUND: Nitrogen (N) is an important element for turfgrass (Zoysia matrella) growth; however, standard N application rate for turfgrass is not established yet. This study was conducted to evaluate the effect of N applica-tion rates on the growth and quality of turfgrass for estab-lishment of standard N application rate. METHODS AND RESULTS: Treatments were as fol-lows; control (0 N g/m2/month), 1N (1 N g/m2/month), 2N (2 N g/m2/month), 3N (3 N g/m2/month), 4N (4 N g/m2/ month), and 5N (5 N g/m2/month). N application im-proved visual turfgrass quality. Compared with the con-trol, clipping yield of all N treatments increased by 90~ 194%. The grass shoot weight of 3N, 4N, and 5N treat-ments increased by 52%, 43%, and 111%, respectively, and the stolon weight of 4N and 5N treatments increased by 412% and 201%, respectively, compared to the control. The N uptake amount and N recovery rate were estimated to be 4.10~6.28 g/m2 and 14~58%, respectively. CONCLUSION(S): These results indicate that consider-ing visual quality, clipping yield, N uptake amount, and N recovery, the application rate of 2~3 N g/m2/month was suggested to be suitable for Z. matrella production.
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