Your SlideShare is downloading. ×
0
Rhs level 2 certificate  year 1 week 18 2012
Rhs level 2 certificate  year 1 week 18 2012
Rhs level 2 certificate  year 1 week 18 2012
Rhs level 2 certificate  year 1 week 18 2012
Rhs level 2 certificate  year 1 week 18 2012
Rhs level 2 certificate  year 1 week 18 2012
Rhs level 2 certificate  year 1 week 18 2012
Rhs level 2 certificate  year 1 week 18 2012
Rhs level 2 certificate  year 1 week 18 2012
Rhs level 2 certificate  year 1 week 18 2012
Rhs level 2 certificate  year 1 week 18 2012
Rhs level 2 certificate  year 1 week 18 2012
Upcoming SlideShare
Loading in...5
×

Thanks for flagging this SlideShare!

Oops! An error has occurred.

×
Saving this for later? Get the SlideShare app to save on your phone or tablet. Read anywhere, anytime – even offline.
Text the download link to your phone
Standard text messaging rates apply

Rhs level 2 certificate year 1 week 18 2012

3,447

Published on

seed sowing techniques for vegetables, extending the season, catch and intercropping

seed sowing techniques for vegetables, extending the season, catch and intercropping

0 Comments
1 Like
Statistics
Notes
  • Be the first to comment

No Downloads
Views
Total Views
3,447
On Slideshare
0
From Embeds
0
Number of Embeds
0
Actions
Shares
0
Downloads
47
Comments
0
Likes
1
Embeds 0
No embeds

Report content
Flagged as inappropriate Flag as inappropriate
Flag as inappropriate

Select your reason for flagging this presentation as inappropriate.

Cancel
No notes for slide

Transcript

  • 1. RHS Level 2 Certificate Week 18 – Outdoor food production. Vegetables – crop rotation, intercropping and successional cropping
  • 2. Learning objective <ul><li>1. Cultivation techniques (2) </li></ul><ul><li>1.1 Describe the methods used to advance and extend the productive season of outdoor food crops; including the use of polythene, mulches, fleece, ‘enviromesh’, low tunnels, cloches and cold frames. </li></ul><ul><li>1.2 Describe propagation methods used in the production of vegetable crops, including direct sowing and raising plants in seed beds, blocks and modules </li></ul><ul><li>2. Crop rotation etc </li></ul><ul><li>2.1 State the benefits and limitations of using crop rotation. </li></ul><ul><li>2.2 Describe a four-bed system of crop rotation. </li></ul><ul><li>2.3 Explain how successional cropping can be achieved for a NAMED crop by using sowing and planting dates, choice of cultivars and environmental protection. </li></ul><ul><li>2.4 Explain how intercropping can be used to maximise production. </li></ul><ul><li>2.5 Describe the effect of plant spacing on a named crop. </li></ul><ul><li>2.6 Describe what is meant by ‘cut and come again’ vegetables </li></ul>
  • 3. Propagation methods for vegetables <ul><li>Seed – sown outside or sown in pots under cover </li></ul><ul><li>Plants – young vegetable plants at planting out stage can be purchased from mail order suppliers who will deliver in the correct week for planting. </li></ul><ul><li>Roots, slips and sets – Asparagus ( Asparagus officinalis ) is supplied as a root, Sweet potatoes ( Ipomoea batatas ) as slips (shoots with part of the root tuber – a bit like propagating Dahlia) and onions ( Allium sativum ) as sets (juvenile bulbs). </li></ul>
  • 4. Seed Sowing - outdoors <ul><li>Direct sowing – into the ground where they will mature. Used for root vegetables which resent disturbance (carrots, parsnips, onions and leeks from seed) and for salads. Can be used for legumes – but watch out for mice! </li></ul><ul><li>Seed bed – a separate seed bed used to germinate and bring the plants on. Then transplanted – used for Brassicas. </li></ul>
  • 5. Seed sowing under cover <ul><li>Seed trays followed by pricking out. </li></ul><ul><li>Individual pots, modules or root trainers. Less work but needs more space. </li></ul><ul><li>Compost blocks – use of a blocking tool and compost mix to make compressed squares of compost. Advantages – no pots to wash, no transplant shock. Disadvantages – mixes use peat, equipment is quite expensive (but no pots to buy), not suitable for all vegetables. </li></ul>
  • 6. Crop rotation <ul><li>Vegetables divided into five groups – permanent planting (perennials like Asparagus); Brassicas; Legumes; Alliums; root crops. </li></ul><ul><li>Salad crops and some others like Sweet Corn do not fall into a rotation group </li></ul><ul><li>The principle is not to grow the same group on the same soil two years running. </li></ul>
  • 7. Crop Rotation – benefits and limitations Inflexible – intercropping, catch cropping or mixed cropping do not fit well Planning the rotation also enables planning succession Personal taste is vital on a small scale – the grower might like brassicas but not carrots. One crop can benefit the next in the rotation – nitrogen fixing legumes; potatoes suppress weeds Most pests and diseases are mobile or have long persistence Minimises plant problems – pests, diseases and deficiencies Limitations Benefits
  • 8. Extending the season for food crops <ul><li>Using protection – cloches, greenhouse, poly-tunnel - at the beginning and end of the season. </li></ul><ul><li>Using varieties that are suited to the stage of the growing season. For example Peas ( Pisum sativum ) can be picked from May to September if the right varieties are chosen. </li></ul><ul><li>Sow in succession – so that there are new plants ready to harvest as one batch finishes. </li></ul>
  • 9. Successional cropping <ul><li>Sowing different varieties – early, mid-season and late </li></ul><ul><li>Sowing a few seeds at regular intervals so that the plants do not all reach maturity at the same time. For example, hearting lettuce (such as Cos) take 8 -14 weeks to reach maturity. Sowing half a row each week-10 days from late March until late July gives continuity of harvest May to October. </li></ul>
  • 10. Intercropping and other intensive cropping approaches <ul><li>Intercropping – growing rows or plants of a quickly maturing vegetable between those of a slow growing one. </li></ul><ul><li>Catch cropping – growing a quickly maturing crop on soil left vacant by a harvested crop or set aside to be planted later. </li></ul><ul><li>Mixed cropping – growing several vegetables together that benefit each other and are harvested at the same time (e.g. ’the Three Sisters’: sweet corn, beans and squash). </li></ul>
  • 11. Crop spacings and ‘cut and come again’ <ul><li>Spacings are vital in vegetable growing – but the classic spacings given in most books aim to obtain the largest vegetables at picking. </li></ul><ul><li>Closer spacings – particularly for brassicas – can enable ‘baby’ vegetables to be grown which reach maturity more quickly and are more tender. </li></ul><ul><li>Cut and come again crops enable a harvest and then re-grow from the base to enable a further crop. For example Cos lettuces like ‘Crisp Mint’ and some cabbages. </li></ul>
  • 12. Learning outcomes <ul><li>1. Cultivation techniques (2) </li></ul><ul><li>1.1 Describe the methods used to advance and extend the productive season of outdoor food crops. </li></ul><ul><li>1.2 Identify a range of propagation methods used in the production of a range of outdoor food crops. </li></ul><ul><li>2. Crop rotation etc </li></ul><ul><li>2.1 State the benefits and limitations of using crop rotation. </li></ul><ul><li>2.2 Describe how crop rotation can be used in the vegetable garden. </li></ul><ul><li>2.3 Describe two methods by which successional cropping can be achieved in the production of a range of vegetable crops. </li></ul><ul><li>2.4 Define the term: ‘intercropping’. </li></ul><ul><li>2.5 Explain how intercropping can be used to maximise production. </li></ul>

×