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- W2023137090 abstract "The farm gross margins resulting from different cultivation techniques with arable crop rotations of all-cereals or cereals and root crops are compared using a linear programming model. This determines the labour, machinery, crops and optimum times for harvesting, cultivating and planting which give the best farm gross margin for a given set of conditions. The gross margins achieved with other machinery are then compared with this optimum.The model shows the following (see the table below).Direct drilling gives the best gross margin whenever available labour restricts winter cultivations such as on an all-cereal heavy land farm.Irrespective of the primary cultivation system used, secondary cultivation by a linked spring tine/drill instead of a multi-pass harrow and drill produces a £15/ha greater gross margin on all-cereal heavy land. The difference is reduced by mixed cropping and on all cereal light land the difference is £6/ha. The linked system enables all winter wheat to be grown in all cases.Rotary digging and shallow ploughing are the primary cultivations which give the highest farm gross margins. Deep ploughing gives the lowest farm gross margin.Farm gross margins for some cultivation methods with four cropping systems, £/haMethodAll-cereal heavy landAll-cereal light landCereal/sugar beet heavy landCereal/potato heavy landDirect drilling140148Not applicableWith linked spring tine/drillRotary digging135157140114Shallow ploughing135157Not applicableChisel ploughing126152131111Deep ploughing114149120100With multipass-harrow and drillRotary digging121151129107Shallow ploughing120151Not applicableChisel ploughing111146119101Deep ploughing9914310989Full-size tableTable optionsView in workspaceDownload as CSV" @default.
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- W2023137090 date "1978-09-01" @default.
- W2023137090 modified "2023-09-27" @default.
- W2023137090 title "An economic comparison of methods of cultivating and planting cereals, sugar beet and potatoes and their interaction with harvesting, timeliness and available labour by linear programming" @default.
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- W2023137090 doi "https://doi.org/10.1016/0021-8634(78)90102-6" @default.
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