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Plant Nutrition Revision

Implement a Plant Nutrition program
Across
A form of N which may accumulate in soils and is toxic to plants (7)
May be applied to lower pH (7)
Often shows up as burnt patches on leaves and fruits (7)
Potassium is involved in the opening and closing of these (7)
Toxicities occur more frequently in this plant production industry (11)
These types of nutrients show deficiencies in the older leaves first (6)
A deficiency may cause yellowing from leaf margins while veins remain green (9)
Too much of one or more nutrients (8)
High salinity may cause plants to do this (4)
Loss of green colouration in leaves (9)
These are needed in small amounts by plants (14)
Nutrients vary in their ___________ at different pH levels (10)
May be added to increase pH (4)
Less micronutrient availability in this pH range (8)
An ion has gained or lost one or more of these (9)
Has a low cation exchange capacity (4)
A deficiency of this nutrient may result in Blossom End Rot in tomatoes (7)
Bacteria which can fix atmospheric nitrogen (9)
A fertiliser high in nitrogen (4)
May be applied to fix dispersive soils (6)
The concentration of sodium in a soil (8)
Down
A charged atom (3)
Important in producing quality flowers and fruit (9)
The process by which ammonium is converted into nitrate (13)
Has the atomic number 15 (10)
Becomes soluble at a low pH and is toxic to most plants (9)
Special roots found in Proteaceae species (8)
Fungi which develop a symbiotic relationship with plant roots (11)
Deficiency of this nutrient results in yellowing of leaves, beginning in the new growth (4)
May be applied to fix nutrient deficiencies (10)
A positively charged ion (6)
Clay particles often have this charge (8)
Microorganisms convert organic matter into this form (9)
A form of nitrogen which may be taken up by plants (8)
Death of cells (8)
Movement of water from a low to higher solute concentration (7)
You can get blue hydrangeas in these soils (4)