Summary
This empirical study provides evidence that transient dynamic theory better explains observed variations in stem biomass allocation across crop species than classic allocation theories. Using four major crop species in single and mixed systems, the authors show that stem mass fractions are shaped by developmental stage and competitive conditions, with strong interspecific competition reducing variation and larger plants displaying more stable allocation patterns. These findings offer a theoretical foundation for predicting and potentially stabilising crop yield outcomes.
UK applicability
The findings are potentially relevant to UK cereal and pulse production (wheat, oats, beans), particularly in understanding how intercropping or mixed cropping systems affect plant architecture and resource allocation. However, the study was conducted in China and may require local validation under UK soil, climate and management conditions.
Key measures
Stem mass fraction (proportion of total biomass allocated to stems); plant ontogeny stages; intraspecific and interspecific competition intensity; total plant biomass
Outcomes reported
The study quantified transient variations in stem mass fractions across four crop species (corn, soybean, flax, wheat) in single and mixed cropping systems. It demonstrated how plant ontogeny, intraspecific and interspecific competition influence stem biomass allocation patterns.
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