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Greenhouse Management Final Exam 2025/2026 – 120 Q&A on Substrates, Fertilizers, DLI, Environmental Control & Nutrient Disorders

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This comprehensive document includes 120 final exam questions and correct answers for the Greenhouse Management course, designed for the 2025/2026 academic year at Albany Technical College and applicable horticulture or plant production programs. The material emphasizes both theoretical understanding and practical application in managing controlled growing environments using soilless media, light optimization, fertilization strategies, and plant physiology. Key topics explored include detailed criteria for substrate selection (e.g., CEC, AEC, bulk density, pH, air and water holding capacity), with breakdowns of commonly used materials such as peat, perlite, vermiculite, and coir. Students are tested on calculations and interpretation of electrical conductivity (EC), saturated media extract (SME), pour-through methods, and understanding salt stress symptoms and salinity management . The exam also covers DLI (Daily Light Integral) requirements by crop type, photosynthetically active radiation (PAR), and how to manage light intensity, shading, and temperature. There are specific sections on nutrient deficiency symptoms, including chlorosis, necrosis, stunting, purpling, and principles of 4R Nutrient Stewardship (Right Source, Right Rate, Right Time, Right Place). Additional focus areas include leaching, container capacity, humidity control (RH, AH, SMC), water stress signs, and environmental controls that influence greenhouse efficiency. This study guide is ideal for students in greenhouse operations, plant science, controlled environment agriculture (CEA), sustainable horticulture, and floriculture, and serves as an excellent preparation tool for course exams, certifications, or hands-on production roles. Keywords: greenhouse management, soilless substrates, peat, coir, perlite, vermiculite, bulk density, EC, pour-through, SME, container capacity, water stress, nutrient deficiency, DLI, PAR, light management, RH, SMC, chlorosis, stunting, 4R nutrient stewardship, fertilizer salts, air-water ratio, salt injury, leaching, environmental control, Albany Technical College

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Greenhouse Management Final Exam
2025/2026 Exam Questions and Verified
Answers | Already Graded A+



Be able to discuss how figure 1-3 in the text book relates to choosing an

appropriate greenhouse production area. - 🧠ANSWER ✔✔Crop production

areas often can be

evaluated on the basis of three factors: production cost, quality, and

transportation cost. If all three factors are ideal, then the area is safe from

competition. If conditions are less than ideal, as is usually the case,

weakness of any one factor must be offset by strengthening one or both of

the others in order for the production area to meet outside competition.

,Understand what the major floriculture crop groups are, and their relative

importance in the US greenhouse industry (ie. Cut-flowers, green plants,

flowering pot plants, and bedding plants) - 🧠ANSWER ✔✔Cut-Flowers -

flowers or flower buds (often with some stem and leaf) that have been cut

from the plant bearing it. It is usually removed from the plant for decorative

use. Typical uses are in vase displays, wreaths, and garlands. Many

gardeners harvest their own cut flowers from domestic gardens, but there is

a significant floral industry for cut flowers in most countries.




Green Plants -




Flowering Pot Plants -




Bedding Plants - Short plants that bloom for a long time and are packed

with flowers. It makes up 49% of the industry.

What is plug technology, and what are its benefits? - 🧠ANSWER

✔✔Revolutionizing the bedding plant industry


Lower overhead (seedlings can be held at

,high densities for long periods of time)

-

Ideal cultural conditions during germ and early

growth

-

Less transplanting shock

-

Faster finished plant production

-

Reduction in sowing and transplanting labor

-

Savings passed on to consumers



Producers must adopt this technology to

remain competitive




3
COPYRIGHT©JOSHCLAY 2025/2026. YEAR PUBLISHED 2025. COMPANY REGISTRATION NUMBER: 619652435. TERMS OF USE. PRIVACY
STATEMENT. ALL RIGHTS RESERVED

, Where did the greenhouse industry originate? - 🧠ANSWER ✔✔The

greenhouse industry in the western

world appears to have originated in Holland

during its "Golden Age," the 1600s.

-

The stage was set during the first half of the 17

th

century when The Netherlands became the

world's foremost sea power.

-

Its merchant fleet tripled during this period to the

point where The Netherlands provided half the

world's shipping, and Amsterdam became the

world's leading commercial city


What is a crop schedule? - 🧠ANSWER ✔✔Production Schedules



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