Maintaining the correct balance of plant nutrients is essential to producing a healthy crop. Whether this supply of nutrients is from a well maintained soil or from solution culture through NFT or substrate, it is important for growers and managers to be able to identify nutritional problems at the earliest stages so that
corrective action can be taken.
When sampling foliage for nutritional status you should remove the youngest fully expanded leaves from plants that you are concerned about – but also from healthy plants for comparison. The results can then be compared to the information given in this guide. Analysis of tissue, soil or solution can give an absolute indication when things go wrong – early indication can be given by changes in growth or foliage colour. This Crop Walkers’ Guide aims to provide that early indication.
Hard copies are free to AHDB Horticulture levy payers and dependent on your Associate package may be free or charged at a reduced rate. If you require a hard copy of this publication then please contact LPC.CRM@ahdb.org.uk