Call us: 01603 781 217
Email us: info@tandj.co.uk

Leaf Sampling Guide

 
 
 

Leaf Samples

 
Crop When to Sample Plant Part to Sample Number of Leaves in Sample
Alfalfa Early growth up to 1/10 Bloom stage Entire top 15 cm of plant 45-55
Apple Late summer just after the end of terminal growth Youngest fully expanded leaf from non-fruiting terminals 75-100
Apricot Late summer just after the end of terminal growth Youngest fully expanded leaf from non-fruiting terminals 75-100
Beans Seedling stage Entire above ground portion 25-30
Beans Before or during initial flowering Youngest mature leaves from the top of the plant 25-30
Beets Before root or bulb enlargement Centre mature leaves 25-35
Broccoli Before heading First mature leaves from centre of whorl 10-20
Cabbage Before heading First mature leaves from centre of whorl 10-20
Carnations Pinched plants 5th and 6th leaf pair from top of primary laterals 20-30
Carnations Unpinched plants 4th and 5th leaf pair from terminal of plant 20-30
Carrots Before root or bulb enlargement Centre mature leaves 25-35
Celery Early to mid-growth Petiole and leaf of youngest mature leaf 20-30
Cereal Grains Prior to heading First 4 leaf blades from top of plant 30-40
Cereal Grains Seedling stage (less than 30 cm) All the above ground portion of plant 50-75
Cherry Late summer just after the end of terminal growth Youngest fully expanded leaf from non-fruiting terminals 75-100
Chrysanthemums Before and during early flowering Youngest mature leaves on flowering stem 20-30
Clover and Other Legumes Prior to bloom Mature leaf blades about 1/3 of the way down the plant top 50-60
Coffee Early to mid-season Mature leaves of current year's growth 40-50
Confer In spring, when it has about 2 inches of new growth Collect 2 inches of new tip growth (entire tip including stem). Collect from the same side of the tree at the same height on each tree. approx. 30 tips
Corn Seedling stage (less than 30 cm tall) All the above ground portion 25-30
Corn Just before tasselling The fully developed leaf below the whorl 15-20
Corn Tasselling to silking The leaf at the ear node or the one above or below it 15-20
Cotton Early growth, at first bloom and when first squares appear Youngest fully mature leaves on main stem 30-35
Cucumber Early stage of growth prior to fruit set 4th to 6th leaf from terminal on main stem 20-25
Cucurbits (Cucumber, Melons, etc.) Early stage of growth prior to fruit set 4th to 6th leaf from terminal on main stem 20-25
Deciduous Fruit (Apple, Apricot, Almond, Cherry. Peach, Pear, Prune) Late summer just after the end of terminal growth Youngest fully expanded leaf from non-fruiting terminals 75-100
Forage and Pasture Grasses Before head emergence or at the stage of best quality The uppermost leaf blades 50-60
Grains(Small, Including Rice) Seedling stage(less than 30 cm) All the above ground portion of plant 50-75
Grains(Small, Including Rice) Prior to heading First 4 leaf blades from top of plant 30-40
Grapes During bloom period Leaves and petioles opposite the flower cluster 75-100
Head Crops(Cabbage, etc) Before heading First mature leaves from center of whorl 10-20
Leaf Crops (Lettuce, Spinach, etc.) Before mid-growth Youngest mature leaf 30-50
Lettuce Before mid-growth Youngest mature leaf 30-50
Lemon, Lime During autumn growth flush Mature leaves from last flush of growth on non-fruiting terminals 30-40
Melons Early stage of growth prior to fruit set 4th to 6th leaf from terminal on main stem 20-25
Milo-Sorghum Before or at heading 2nd leaf from top of plant 20-25
Onions Before root or bulb enlargement Centre mature leaves 25-35
Orange During autumn growth flush Spring cycle leaves, 4 to 7 months old from non-fruit-bearing terminals 25-30
Ornamental Trees and Shrubs Current year's growth Fully mature leaves 30-75
Peach Late summer just after the end of terminal growth Youngest fully expanded leaf from non-fruiting terminals 75-100
Peanuts Before or at bloom stage Youngest fully developed leaves from top of the plant 40-45
Pear Late summer just after the end of terminal growth Youngest fully expanded leaf from non-fruiting terminals 75-100
Peas Before or during initial flowering Leaves from the 3rd node down from the top of the plant 30-50
Pecans After the end of terminal growth Mature leaves from terminal shoots, taking the pairs from the middle of the leaf. 30-45
Plum Late summer just after the end of terminal growth Youngest fully expanded leaf from non-fruiting terminals 75-100
Potato During vegetative growth 3rd to 6th leaf back from growing tip 30-50
Pineapple During vegetative growth Young mature leaves 10-15
Poinsettias Before and during early flowering Most recently mature fully expanded leaf 15-20
Potato During vegetative growth 3rd to 6th leaf back from growing tip 30-50
Prune Late summer just after the end of terminal growth Youngest fully expanded leaf from non-fruiting terminals 75-100
Radish Before root or bulb enlargement Centre mature leaves 25-35
Raspberry From early growth through mid-season Youngest mature leaves on lateral or primary canes 25-40
Rice Prior to heading First 4 leaf blades from top of plant 30-40
Rice Seedling stage (less than 30 cm) All the above ground portion of plant 50-75
Root Crops (Carrots, Beets, Onions, etc.) Before root or bulb enlargement Center mature leaves 25-35
Roses Before and during early flowering Upper mature leaves on the flowering stem 25-30
Small Grains (Including Rice) Prior to heading First 4 leaf blades from top of plant 30-40
Small Grains (Including Rice) Seedling stage (less than 30 cm) All the above ground portion of plant 50-75
Soybeans Or prior to or during initial flowering Fully developed leaves at the top of the plant 20-30
Soybeans Seedling stage (less than 30 cm tall) All the above ground portion 20-30
Spinach Before mid-growth Youngest mature leaf 30-50
Squash Early stage of growth prior to fruit set 4th to 6th leaf from terminal on main stem 20-25
Strawberry From early vegetative growth to early fruiting state Youngest fully expanded mature leaves 50-70
Sugar Beets Before mid-season Fully mature leaves midway between the younger center leaves and the oldest leaf whorl on the outside. 30-35
Sugar Cane Up to 4 months old 4th fully developed leaf from the top of the plant. 25-30
Sweet Corn Before tasselling The entire fully mature leaf below the whorl 20-35
Tobacco Before bloom Uppermost fully developed leaf 8-12
Tomato (Field) Before early bloom stage 3rd to 4th leaf back from growing tip 20-35
Tomato (Greenhouse) Before bloom Young plants: Leaves from 2nd and 3rd clusters 20-35
Tomato (Greenhouse) Before bloom Older plants: Leaves from 4th to 6th clusters 20-35
Turf Anytime during growing season Leaf blades, avoid soil contamination 500 cc of material
Walnut After the end of terminal growth Middle leaflet pairs from mature shoots 30-40
 

Why choose us?

 
Experience...
 
Thomson & Joseph have over 68 years experience in customer service and the provision of agricultural, industrial chemical and pharmaceutical products. Over the years we have developed strong relations with international key producers including OCM, 5N Plus, Landus Cooperative, Albion Plant Nutrition and BioAg.
Qualifications...
 
Our team are highly qualified to provide support in the agricultural, chemical, pharmaceutical and biological fields. As a company we are accredited to ISO 9001:2015 quality assurance scheme, FACTS (Fertiliser Advisers Certification and Training Scheme) and FEMAS (Feed Materials Assurance Scheme). We have staff who are members of Society of Chemical Industry (SCI); British Society of Animal Science; British Nutritional Foundation; Nutrition Society; Society of Biology and the British Grassland Society.
Technical Support...
 
If you need to get in contact with us for technical support don't hesitate to call us on 01603 781217 or email us at info@tandj.co.uk.
Customer Care...
 
We are an independent business who pride ourserlves on our customer service, having been established in 1951 we have continued to maintain our strong and personal customer relationships. We have also been accredited to ISO 9001:2015 Quality Standard since 1994.

Latest News

 
Business As Usual
12/6/2020
Please note that we are open for business as usual. We have been able to maintain social distancing ...
Christmas Opening Hours
16/12/2019
It's been a busy year here at T&J and we're all looking forward to the festive period!...

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Address

PO Box 1428, 7 Parkland Close, Norwich, NR12 8UA
Phone: +44 (0)1603 781 217 
Fax: +44 (0)1603 781 149


Website: www.tandj.co.uk
Email: info@tandj.co.uk

   


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