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Positive Allelopathy  RSS feed

 
Posts: 166
Location: Yucatan Puebla Ontario BC
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Garlic: The antibiotic and fungicidal compounds may reduce disease in crops like peppers or tomatoes (crops prone to bacterial and viral infections).

Abstract
By the method of tissue culture under sterilized condition, this paper studied the allelopathy of garlic root exudates on lettuce, hot pepper, radish, cucumber, Chinese cabbage, and tomato. The results showed that garlic root exudates had no evident effects on the germination rate, germination index, shoot height, and protective enzyme system of test crops, but significantly increased the root length, aboveground fresh mass, and root fresh mass of lettuce, with the RIs being +0.163, +0.106, +0.318, respectively. The exudates also increased the root length of Chinese cabbage, with a RI of +0.120. For other test crops, no significant difference was observed between the treatments and the control. Garlic root exudates significantly increased the chlorophyll content and root activity of the receiver vegetables. The strongest promotion effects were found on chlorophyll content in radish, with RI being +0.282, and on root activity of cucumber, with RI being +0.184. The exudates promoted the nutrient absorption of all the receiver vegetables.

Note: Dense stands of Garlic can have a noticeable negative effect on nearby plants due to competition for nutrients. Garlic can become largely monolithic in a permanent polyculture if left unchecked.
 
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Location: Zone 4b
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Neem tree, cinnamon, ginger, lavender to name a few.
 
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