Titlebook: Systems approaches for agricultural development; Proceedings of the I Frits Penning de Vries,Paul Teng,Klaas Metselaar Conference proceedin

Veneer

Conference proceedings 1993ility and climate change are keyissues for agricultural institutes. The best solutions will be foundby integrating disciplines. Organized thinking about future farmingrequires forecasting of the implications of alternative ways to farmand to develop agriculture. Systems thinking and systems simulati

轻率看法

Designing improved plant types: a breeder’s viewpointharacteristics. They thus constitute a useful addition to the array of tools used by plant breeders when deciding on parents and crosses. Their use in this arena, however, is likely to be limited, partly because of scepticism stemming from previous experience with ‘ideotype’ concepts. They may have

强有力

Improvement of rice plant type concepts: systems research enables interaction of physiology and breeut during later stages, the leaf area appeared to be excessive, the leaf nitrogen content low and growth limiting, particularly for direct seeded rice where a dense population and the absence of a transplanting shock led to a large vegetative biomass. Simulated yields increased if initialleaf growth

cancellous-bone

Designing improved plant types for the semiarid tropics: agronomists’ viewpointsultivars and site, simulated earlier maturity tended to improve yield in the lower yielding years and increased yield stability, in sorghum and maize, but not in kenaf. In all species, higher yield potential was advantageous, both in terms of yield and risk, despite the severe water limitation. Howe

现实

ovation

Sleep-Paralysis

HEPA-filter

严峻考验

Optimising harvest operations against weather riskmers to maximise profits by altering their management practices according to seasonal variations in rainfall..This paper examines the interactions between weather, crop, machinery selection and management practices during wheat harvesting in northern Australia. A simulation model was used to investi

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