ISA STUDY GUIDE 2026 ACCURATE
QUESTION SET AND CORRECT ANSWERS
◉ With sprinkler irrigation:.
Answer: Less frequent waterings of longer duration will reduce the
likelihood of salt buildup, water hitting the soil surface can lead to
crusting, application rates that exceed absorption can lead to runoff.
◉ In sites where poor drainage can be a problem, which of the
following WILL NOT help ensure plant survival?.
Answer: Placing gravel in the bottom of the planting hole and
backfilling with a sandy soil.
◉ 8 pounds of nitrogen.
Answer: 80 pound bag of 10-6-4 fertilizer contains how many
pounds of actual nitrogen?
◉ Nitrogen, phosphorus, potassium.
Answer: A complete fertilizer contains?
◉ A tree may not respond immediately to a fertilizer application if:.
Answer: A slow release fertilizer was applied, inadequate soil
moisture, and a tree is suffering from collar rot
, ◉ A soil test may not identify a nutrient deficiency problem in a
plant because:.
Answer: The soil may have adequate nutrients but something may
be inhibiting uptake.
◉ Sulfur-coated urea/ or ureaformaldehyde is sometimes included
in nitrogen fertilizers because:.
Answer: Slow-release forms of nitrogen are sometimes desired.
◉ The climate factor that determines hardiness zones is:.
Answer: Low temperature extremes
◉ Trees planted under utility lines should be:.
Answer: Low growing to remain below the lines.
◉ Some trees acclimate to shade conditions by:.
Answer: Developing larger and thinner leaves, and variegated foliage
losing variegation, or colored foliage tending to be greener.
◉ Fastigiate trees have a growth form that is:.
Answer: Upright
QUESTION SET AND CORRECT ANSWERS
◉ With sprinkler irrigation:.
Answer: Less frequent waterings of longer duration will reduce the
likelihood of salt buildup, water hitting the soil surface can lead to
crusting, application rates that exceed absorption can lead to runoff.
◉ In sites where poor drainage can be a problem, which of the
following WILL NOT help ensure plant survival?.
Answer: Placing gravel in the bottom of the planting hole and
backfilling with a sandy soil.
◉ 8 pounds of nitrogen.
Answer: 80 pound bag of 10-6-4 fertilizer contains how many
pounds of actual nitrogen?
◉ Nitrogen, phosphorus, potassium.
Answer: A complete fertilizer contains?
◉ A tree may not respond immediately to a fertilizer application if:.
Answer: A slow release fertilizer was applied, inadequate soil
moisture, and a tree is suffering from collar rot
, ◉ A soil test may not identify a nutrient deficiency problem in a
plant because:.
Answer: The soil may have adequate nutrients but something may
be inhibiting uptake.
◉ Sulfur-coated urea/ or ureaformaldehyde is sometimes included
in nitrogen fertilizers because:.
Answer: Slow-release forms of nitrogen are sometimes desired.
◉ The climate factor that determines hardiness zones is:.
Answer: Low temperature extremes
◉ Trees planted under utility lines should be:.
Answer: Low growing to remain below the lines.
◉ Some trees acclimate to shade conditions by:.
Answer: Developing larger and thinner leaves, and variegated foliage
losing variegation, or colored foliage tending to be greener.
◉ Fastigiate trees have a growth form that is:.
Answer: Upright
