Ep. 145 - Kitchen Waste as Plant Food: Egg Shells, Banana Peels, and Tea Bags, Oh My!

The gardening "advice" we get may not always be accurate. Bury a whole egg under your tomato plants? Make a tea from banana peels? What advice is legit and what is bogus? Let's look at the scientific research behind common kitchen scraps that might also be used as garden amendments: banana peels, eggshells, teas leaves and spent coffee grounds.

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RESOURCES

Comparative Study of Various Organic Fertilizers Effect on Growth and Yield of Two Economically Important Crops, Potato and Pea (scirp.org)

Effects of banana peel compost rates on Swiss chard growth performance and yield in Shirka district, Oromia, Ethiopia - ScienceDirect

Preparation of nano-fertilizer blend from banana peels | SpringerLink

BIO-ORGANIC LIQUID FERTILIZER PRODUCTION FROM CHICKEN MANURE AND BANANA PEELS AND EVALUATING ITS EFFECTIVENESS ON LETTUCE (Lactuca sativa L.) UNDER HYDROPONIC CONDITION. (haramaya.edu.et)

HEN EGGSHELL WASTE AS FERTILIZER FOR THE GROWTH OF PHASEOLUS VULGARIS (COW PEA SEEDS)

Chicken eggshells as a soil amendment and their relationship with the morphological response of mustard plants (Brassica juncea, L.) - IOPscience

The use of spent coffee grounds in growing media for the production of Brassica seedlings in nurseries | SpringerLink

Agriculture | Free Full-Text | Spent Coffee Grounds Applied as a Top-Dressing or Incorporated into the Soil Can Improve Plant Growth While Reducing Slug Herbivory (mdpi.com)

Acute Toxicity of Experimental Fertilizers Made of Spent Coffee Grounds | SpringerLink

Impact of spent coffee grounds as organic amendment on soil fertility and lettuce growth in two Mediterranean agricultural soils: Archives of Agronomy and Soil Science: Vol 64, No 6 (tandfonline.com)

Biblioteca Digital do IPB: Effect of fresh and composted spent coffee grounds on lettuce growth, photosynthetic pigments and mineral composition

Use of Spent Coffee Ground Compost in Peat-Based Growing Media for the Production of Basil and Tomato Potting Plants: Communications in Soil Science and Plant Analysis: Vol 47, No 3 (tandfonline.com)

Applying spent coffee grounds directly to urban agriculture soils greatly reduces plant growth - ScienceDirect

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