 |
 |
 |
| Case Study 11 - Plough and reduced cultivation
systems |
 |
 |
 |
Location |
 |
Suffolk |
 |
 |
 |
 |
 |
Size, average field size and spread |
|
938ha |
 |
 |
 |
 |
 |
Soils and landscape |
 |
On Chalky Boulder Clay with predominantly dense soils
that are slowly
permeable and seasonally waterlogged. Clay loam or sandy clay loam
soils over clay (Beccles association) are widespread, mixed with better-structured
calcareous clays (Hanslope association). This case study
comprises several farms within a 12km (8 mile) radius. Fields are
predominantly flat with some gradual slopes. |
 |
 |
 |
 |
 |
Cropping |
 |
Apart from 89ha of sugar beet, 51ha of vining peas
and 128ha set aside,
the crops are all combinable with 523ha winter wheat, 73ha winter
oilseed rape, 37ha winter barley and 37ha spring barley. |
 |
 |
 |
 |
 |
Workforce |
 |
Two working partners and 2 full time tractor drivers’
plus causal help at
harvest manage the farm. |
 |
 |
 |
 |
 |
Equipment and cultivation machinery |
 |
2 x Caterpillar 55 - 270 hp, 400 hp 4 years old
(second-hand 2000); 2 x
12 5 hp wheeled tractors; 100 hp runabout tractor; 80 hp runabout
tractor; 24m Amazone pneumatic fertiliser spreader; 24 m Sands 2000l
Self Propelled Sprayer with Airtec nozzles; Claas Lexion 480 combine with
a Horsch trailer. For cultivation a 10- and 5-furrow plough, 8m Vaderstad
Press, 8m Vaderstad cultivator with Crosskill rolls’; 6m Simba Solo,
6m
Vaderstad Rapid drill with front tines, 12m rolls.
|
 |
 |
 |
 |
 |
 |
Cultivation Policy |
 |
 |
 |
Until recently the farm
has almost exclusively ploughed, having reduced ploughing time and cost
to a minimum with
high output machinery. Part of the decision for further change was due
to the expansion in the area farmed, often
taking in land with a blackgrass weed problem. Ploughing is seen as a
very complete operation, but the farm size is
now such that alternatives to the plough on part of the hectarage needs
to be and is being considered. The farm is
changing the 6m Vaderstad Rapide drill, bought second-hand and now 7 years
old, for an 8m System Disc version.
The farm anticipates it will bring advantages of added mixing with more
straw on the surface and open up
enhanced opportunities for a much-reduced scratch and drill cultivation,
especially to establish the oilseed rape.
Realising the increased cost and resulting times of continuing to plough
set against the plans for expansion when
land becomes available at a sensible price, the farm decided they needed
to have a quicker and alternative
establishment method. The wheat yields are regularly above 10 tonnes per
ha with the resulting high volumes of
straw. The concerns of discing and smearing in wet conditions were allayed
with the incorporation of subsoil tines in
the Simba Solo. Less hectares were established with the Solo in the wet
autumn of 2000 than had been expected. |
 |
 |
 |
 |
| |
| |
Crop sequence |
|
|
|
|
 |
 |
 |
 |
Operation |
New Crop (2001 season) |
Plough or solo |
Approximate Cost (£/ha) |
Approximate overall time taken (min/ha) |
 |
 |
 |
 |
 |
 |
 |
1st winter wheat |
2nd winter wheat |
Plough |
£96 |
94 |
 |
 |
 |
 |
 |
 |
 |
1st winter wheat |
2nd winter wheat |
Solo |
£76 |
47 |
 |
 |
 |
 |
 |
 |
 |
Winter wheat |
Winter barley |
Solo |
£76 |
47 |
 |
 |
 |
 |
 |
 |
 |
Winter wheat |
Winter barley |
Plough |
£96 |
94 |
 |
 |
 |
 |
 |
 |
 |
Winter barley |
Oilseed rape |
Solo |
£76 |
47 |
 |
 |
 |
 |
 |
 |
 |
Winter barley |
Oilseed rape |
Plough |
£96 |
94 |
 |
 |
 |
 |
 |
 |
 |
Sugar beet |
Winter wheat |
Plough |
£79 |
79 |
 |
 |
 |
 |
 |
 |
 |
Winter wheat |
Winter beans |
Plough |
£79 |
79 |
 |
 |
 |
 |
 |
 |
 |
Winter wheat |
Sugar beet |
Anticipated solo but will plough |
£76 |
47 |
 |
*No glyphosate spray has
been used to date to kill off any weed growth. Where a second pass has been
necessary behind the Solo a further 15 minutes per ha and a cost of £15
per ha needs to be added. |
 |
 |
 |
 |
 |
 |
| |
 |
 |
SMI COMMENT |
 |
 |
 |
 |
 |
Traditional and well respected
farm; can just about manage with all-plough situation.
With the intention to farm more land, alternatives to the plough must be
sought. However,
this reduced plough system saves 50min/ha, equivalent to 67 man-days in
autumn and
19 man-days in spring. In future, weeds should be sprayed out before drilling. |
 |
 |
 |
 |
| |
 |
Soil Group |
 |
Type of Year |
M.W.D.s' |
 |
|
M.W.D.s' |
 |
 |
 |
 |
 |
 |
 |
 |
 |
Beccles
H anslope |
 |
Normal
Wet |
77
60 |
 |
|
24
3 |
 |
 |
 |
 |
 |
 |
 |
|
|