SACE Stage 2 Agricultural Production case studies
SACE Stage 2 Agricultural Production · Put your knowledge to work in context.
Agricultural Production is a Stage 2 subject within the South Australian Certificate of Education (SACE), the senior secondary qualification administered by the SACE Board of South Australia. The SACE Board lists Agricultural Production alongside Agricultural Systems under the Agriculture subject area on its Stage 2 subjects page. The SACE Stage 2 Agricultural Production case studies are 5 cases and about 2,706 words.
1Irrigation Scheduling in a Drying Vineyard Block
A 4.2 ha Shiraz block on sandy loam is irrigated by drip at 4 L/h per emitter, 1.5 m vine spacing and 2.8 m row spacing. Mid-January, the grower notes midday leaf curling and a soil probe reading of 18% volumetric water content at 30 cm, falling to 12% at 60 cm.
514 words, about 3 min2Feedlot Ration Decision Under Rising Grain Price
A 600-head feedlot finishes steers from 320 kg to 480 kg liveweight over 110 days. The current ration is 70% barley, 20% hay, 10% protein-mineral supplement, delivering 12.5 MJ ME/kg DM and 13% crude protein.
533 words, about 3 min3Cover Crop Termination Before a Summer Vegetable Crop
A grower drilled a mixed cover crop (cereal rye plus vetch) in late autumn on a 3 ha paddock scheduled for transplanted capsicum in early November. By mid-October the rye is 1.2 m tall and the vetch is flowering.
539 words, about 3 min4Breeding Selection with Conflicting Objectives
A 400-ewe prime-lamb flock is selecting replacement rams. The stud offers two rams with Australian Sheep Breeding Values: Ram A has a post-weaning weight ASBV of +8 kg and a worm egg count ASBV of +40% (higher is worse); Ram B has +3 kg post-weaning weight and −25% worm egg count.
577 words, about 3 min5Post-Harvest Grain Storage and Aeration
A grower harvests 800 t of wheat at 13.5% moisture and stores it in a 1,000 t silo. Two weeks later, a probe near the silo wall reads 15.8% moisture and 31 °C grain temperature, and a musty smell is detected at the surface.
543 words, about 3 min