Level II Agricultural Business Operations
Understand and identify the key crop production targets Be able to state performance targets for individual crop types Gain understanding of factors affecting crop performance
Lets us see what is happening To compare different crop types or enterprises Alerts us to problems Identifies areas for improvement Required to assess profitability
Grain yieldStraw yield Grain moisture content Potato % marketable yield % damage /greens/cracks Harvest DateDrilling date Germination percentage Plant populations Specific weight Oil content percentage Oat kernel content
Spring Barley Spring Oats Spring Beans Winter Barley Winter Wheat WOSR Maincrop Ware Potatoes
Spring Barley t/ha Spring Oats - 5.5t/ha Spring Beans - 4.5t/ha Winter Barley- 7.0t/ha Winter Wheat- 8.5t/ha WOSR- 4.0t/ha Maincrop Ware Potatoes - 40t/ha
Spring Barley - 20,491ha Wheat- 7,968 ha Winter Barley- 5,266 ha Potatoes- 4,325 ha Oats ha OSR- 473 ha Other crops - 1,286 ha
Spring Barley Winter Spring Summer Autumn JanuaryFebruaryMarchAprilMayJuneJulyAugustSeptember Operation/ Growth stage Soil Testing Ploughing/Cultivation Sowing Harvest Nutrition Lime Manganese Seedbed N P K+Sulphur Apply N balance Diseases T0 mildew T1 Fungicide T2 Fungicide Winter Spring Summer Autumn
Key targets to achieve good yields? Sowing Date March – April Earlier - Better? Inputs Seed rate Fertiliser Sprays Harvest Harvest late August onwards Yield = 6t/ha Moisture content =14.5% Specific weight = 62-65kg/hl Timeliness!!!
Sowing Date Mid September to mid October Inputs Seed rate Fertiliser Sprays Harvest From late July Yield = 7t/ha Moisture content =14.5% Specific weight = 65-68kg/hl
World Record t/ha Sowing Date September to November Inputs Seed rate Fertiliser Sprays Harvest End August onwards Yield = 8.5t/ha Moisture content =14.5% Specific weight =70-74kg/hl
Spring OSRWinter OSR Sown mid Aug to early Sept Harvest Early August Yield - 4.0t/ha World record 6.14t/ha Break Crop Sown March-April Harvest Mid September Yield - 2.5t/ha Moisture - 9% Oil Content – 42-45%
Break crop for wheat Winter or spring sown Yields ◦ Winter 7.5t/ha ◦ Spring 6.0t/ha Expanding milling market ◦ Moisture – 13.5 % ◦ Specific weight - > 50kg/hl ◦ Free from odour ◦ High Kernel content
Market dictates Variety which determines yield ◦ Earlies ◦ Processing/packing ◦ Locally marketed Planting - ◦ Seed rate affects tuber size ◦ Planting date Harvesting ◦ Depends on market ◦ Handling at harvest has big effect on potato quality
Setting seed rate & crop establishment
Grain Yield = Grain number X Grain weight
6 site/seasons , 4 varieties, 5 seedrates,UK, (HGCA, 2003)
Grains per ear Tillers per plant Plants (m 2 )
To calculate Seed Rate (kg/ha) we need to know Target plant population Expected establishment % Thousand grain weight
Target plant population will vary with: Establishment % depends on: Variety Sowing date Seed Germination % Sowing conditions Soil type Location
Use Certified seedGermination Test Home Saved seed Adjust seed rates by date for autumn sown crops Use nutrition and growth regulator to manipulate shoot numbers
Target Crop Yields Output/performance targets cereals Importance of Timeliness Target Sowing dates Target Harvest dates Potato quality parameters Components of Grain Yield