Mathematical Description of Seedling Emergence of Riceand Echinochloa species as Influenced by Soil burial depth

• 발행기관: 한국작물학회
• 저자명: Do-Soon Kim 이변우(Lee Byun Woo) Yong Woong Kwon
• 간행물 정보: 『한국작물학회지』제51권 제4호, 362~368쪽, 전체 7쪽
• 주제분류: 농수해양 > 기타농수해양
• 파일형태: PDF
• 발행일자: 2006.09.30

영문 초록

A pot experiment was conducted to investigate the effects of soil burial depth on seedling emergences of rice (Oryza sativa) and Echinochloa spp. and to model such effects for mathematical prediction of seedling emergences. When the Gompertz curve was fitted at each soil depth, the parameter C decreased in a logistic form with increasing soil depth, while the parameter M increased in an exponential form and the parameter B appeared to be constant. The Gompertz curve was combined by incorporating the logistic model for the parameter C, the exponential model for the parameter M, and the constant for the parameter B. This combined model well described seedling emergence of rice and Echinochloa species as influenced by soil burial depth and predicted seedling emergence at a given time after sowing and a soil burial depth. Thus, the combined model can be used to simulate seedling emergence of crop sown in different soil depths and weeds present in various soil depths.

목차

MATERIALS AND METHODS

RESULTS AND DISCUSSION

REFERENCES

키워드

Echinochloa emergence Gompertz curve modelling rice (Oryza sativa) soil depth