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Establishment of a logistic equation for crop biomass and analysis of interspecific interaction in wheat and faba bean intercropping |
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| รหัสดีโอไอ | |
| Title | Establishment of a logistic equation for crop biomass and analysis of interspecific interaction in wheat and faba bean intercropping |
| Creator | Wenlian Bai |
| Contributor | Jingxiu Xiao, Yi Zheng |
| Publisher | Mahasarakham University |
| Publication Year | 2561 |
| Keyword | wheat and faba bean intercropping, growth pattern, species interaction, P fertilizer |
| Abstract | 1. Competition between intercropped species is important for yield advantage, but little attention has been given to interspecific competitive dynamics in intercropping. Two factors involving in planting patterns (wheat monocropped, faba bean monocropped, and wheat and faba bean intercropping) and P rates (P0, 0 kg P ha?1 (the control) 2. P1, 45 kg P ha?1 3. P2, 90 kg P ha?1, respecively) were investigated. Wheat and faba bean were sampled at 10 and 11 times during the growing season each of two years, respectively and data were fitted to a logistic growth model. The results showed that the growth curve of wheat and faba bean almost overlapped for the different phosphorus levels, and there was no difference between monocropping and intercropping in the early growth stage of wheat and faba bean. Interspecific competition was dominant in wheat and faba bean intercropping, and intercropping did not result in biomass advantage (LER<1, K<1). Wheat growth rate was frequently stimulated and the intraspecific competition pressure of wheat was decreased after faba bean had attained its maximum growth rate (Tmax) at all P rates. Intercropping showed biomass and yield dominance (LER>1, K>1). In conclusion, because of the different competitive pressures of wheat and faba bean at different growth stages, the final crop growth performance was also different. Phosphorus level can maximize system productivity by regulating crop interspecific interactions. |
| Language | English |
