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- Scott C. Chapman; Graeme L. Hammer; Holger Meinke
- Agronomy journal 1993 v.85 no.3 pp. 725-735
- simulation models; Helianthus annuus; plant development; dry environmental conditions; phenology; dry matter accumulation; growth models; crop yield; decision making; prediction
- ... In dryland farming systems, opportunities to improve sunflower (Helianthus annuus L.) yields are mostly associated with management decisions made at planting. Dynamic crop simulation models can assist in making such decisions. This study reports the structure of QSUN, a simple and mechanistic crop model for sunflower, and how it accounts for the dynamic interaction of the crop with the soil and ae ...
- J. R. Kiniry
- Agronomy journal 1993 v.85 no.4 pp. 844-849
- filling period; inflorescences; stems; artificial shade; dry environmental conditions; stress response; dry matter accumulation; maturity stage; shade; Triticum aestivum; crop yield; grains; photosynthesis; light; leaves; Texas
- ... Wheat (Triticum aestivum L.) is commonly grown in dryland conditions, where environmental stress during grain filling can increase the dependency on stored assimilate. The objective of this study was to quantify the loss of total nonstructural carbohydrates (TNC) from wheat leaves and stems and the increase in seed dry mass when severe shading stress occurred after anthesis. Beginning 10 to 11 d a ...