Fertilisers and particle sizes. Flashcards
Open ground cultivation.
Mixed borders
Base dressing pre planting.
Top dressing to growing plant, applied seasonally.
Straight - one nutrient
Compound fertilisers - major and micro elements.
Granular or powder formulation.
Resin coated slow release type.
Eg.Vitax Q4
Calcifuges in high/neutral pH soil.
Chelated iron and trace elements as a nutrient source to supply iron and manganese in available form.
Compost in seed trays and short term containers.
Low levels of nutrients are required for seed sowing and pricking out.
Compound fertilisers, emphasis in phosphorus eg. Powdered superphosphate.
Short term resin coated slow release fertilisers, usually with complete range of nutrients. Designed with low nutrient content and short release period.
Inclusion of calcium bright as neutralising agent in media.
Magnesium sulphate used to supply magnesium
Eg. J I Base fertiliser
Long term container/nursery stock.
Longer term resin coated slow release fertilisers in media mix or top dressed at start of growing season.
Various formulations with different nutrient release periods eg 6 months, 12 months etc.
Lawn
Top dressing - applied seasonally.
Granular, powder or micro granules of resin coated slow release fertilisers.
Small prill size to fall below mowing height.
Fine grasses need acidic conditions.
Ammonium sulphate and iron sulphate often in lawn sand with herbicide.
Ammonium sulphate can be used as spring top dressing.
Autumn top dressing Phosphate and magnesium to harden and mature plant tissues against winter stress.
Hydroculture.
Particular type of hydroponic system used for plant propagation and displays of foliage and flowers indoors.
Based on Leica granules.
lewatit 500 - Ion exchange fertilisers, applied once a year
Fine granule applied to the surface of planter of Leica and water reservoir, washed down by hand irrigation.
Gravel
Size
More than 2mm
Coarse sand
Sand
0.2 -2mm
Fine sand size
0.02 - 0.2mm
Silt
Size
0.002 - 0.02
Clay
Size
Less than 0.002mm
