Interactive Hydroponics Textbook

Summary

Unverified entry — flagged for the gaps log. After multiple targeted searches (quoted title searches, OER/Pressbooks directories, university extension catalogs), no resource with the exact name "Interactive Hydroponics Textbook" could be confirmed as a distinct, locatable publication, so the key fields of this entry are marked unknown rather than fabricated.

The closest verified candidate is the University of Arkansas "Greenhouse Management Online" interactive learning center (https://greenhouse.hosted.uark.edu/), which describes itself as "a college-level interactive learning center for greenhouse management" containing text, figures, images, video, and self-tests across 12 units — including Unit 12: Hydroponic Systems and supporting units on mineral nutrition, irrigation and water quality, substrates, and lighting. If the vault's source list intended a web-native interactive hydroponics text, this is the most plausible referent found. Another adjacent resource is the University of Arizona Controlled Environment Agriculture Center's "Introduction to Hydroponics and Controlled Environment Agriculture" manual (Rorabaugh, rev. 2015), which is a downloadable course text but not explicitly "interactive." A QA pass should confirm with the requester which resource was meant, then either repoint this entry's primary_source or replace it.

Guiding Principles

• STEM Integration: Any interactive hydroponics text of this kind anchors plant science and water chemistry instruction in an explorable digital format; the candidate resource integrates horticultural science, engineering of controlled environments, and quantitative problem sets.

(Additional principle mappings deferred until the resource identity is confirmed.)

Learning Outcomes & Transferable Skills

Unknown pending verification. Based on the closest candidate, expected outcomes would include Water Chemistry (fertilizer solution and pH/EC calculations), Biology (plant growth under controlled environments), and Data Literacy (self-test driven, calculation-heavy units).

How to Replicate or Build On It

1. Confirm the intended resource with the course/source-list owner.
2. If the University of Arkansas resource is the intended one, start at https://greenhouse.hosted.uark.edu/ and work through Unit 12 (Hydroponic Systems) together with Units 8–9 (mineral nutrition; irrigation and water quality).
3. Alternatively, evaluate the University of Arizona CEAC manual (https://ceac.arizona.edu/) as a companion text.
4. Record the confirmed URL and license in primary_source and update this entry.

Considerations & Constraints

• Cost: Unknown (candidate resource appears free to access).
• Skill Level: Unknown (candidate is college-level).
• Space/Climate: Classroom or greenhouse-oriented content; climate not determinable.
• Tools Required: Web browser; the candidate resource requires no login for unit content.
• Ongoing Maintenance: Unknown.
• Access Barriers: The unverified identity itself is the barrier — risk of dead or renamed links; no confirmed license or language information.

Prerequisites

Unknown.

Primary Source

unknown — not locatable after reasonable searching. Closest candidate: University of Arkansas, Greenhouse Management Online, https://greenhouse.hosted.uark.edu/ (unconfirmed match). See _gaps.md for follow-up.