AEBI 421 Final: Lecture-2 Review
27 Jan 2016
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June 3rd: define the following and give a few examples for each: Climacteric fruit: burst of respiration- ethylene produced- softening occurs. Climacteric fruit will ripen after harvest once mature. Non-climacteric fruit: non-climacteric fruit do not ripen after harvest: name and describe the different quality components of fresh fruits and vegetables. Appearance and condition: size & shape, compactness (heads/inflorescence), uniformity (presentation in market), Freshness/ripeness: color (uniformity), size, gloss (waxed/polished/turgidity), texture (firmness/juciness) Safety: natural toxicants (nitrates/nitrites in leafy veg, oxalates), non-biotic contaminants (herbicides, insecticides), mycotoxins (e. coli, salmonella, clostridium botulinum), Flavor/taste/aroma: sweetness sourness bitterness (acidity/astringency) volatiles. Physiological : problems related to nutrient absorption, sunlight, temperature, etc. Pathological: diseases related problems: define the following: Hydroponic: technique that involves growing plants on a support/substrate (without soil) in water containing dissolved nutrients. Fertigation: fertigation is the injection of fertilizers, soil amendments, and other water- soluble products into an irrigation system.
