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close this bookSoil and Water Conservation (SWC) Technologies and Agroforestry Systems (IIRR, 1992, 171 p.)
close this folderOrganic fertilizer sources:
View the document1. Basket Composting
View the document2. Fertilizer from Livestock and Farm Wastes
View the document3. Liquid Fertilizer from Leguminous Trees
View the document4. Use of Green Manures

3. Liquid Fertilizer from Leguminous Trees


Green leaves and water

Liquid fertilizer supplements can be made from leaves of leguminous trees and water. (Traditionally, only fresh manure has been used.) Liquid fertilizers are used in small gardens to boost up the growth of young seedlings or as a remedy for plants suffering from nutrient deficiencies.

TABLE 8. NUTRIENT CONTENT OF LIQUID FERTILIZER.


ORGANIC

TOTAL

TREE

NH4-N

N

N

ppm

ppm

SPECIES

ppm

ppm

ppm

p

K

1. Glincidia septum

169.0

12.0

1810

1.8

218.5

2. Leucaena leucocephala compare

97.5

35 5

133.0

11.1

234.0

Cow manure

26.7

4.9

31.6

2.6

158.5

Note: Very significant readings for iron, calcium, magnesium and zinc were also noticed.

· You may test leaves of other leguminous trees in your area. If leguminous leaves are not available, any green plant material may be used (e.g., Cassia siamea, Cassia spectabilis).

· Keep the drum always covered If a drum is not available, then a pit lined with clay or plastic sheeting or even a large earthen pot may be used.

· Replace the leaves with fresh ones when the liquid fertilizer has been exhausted.

· It is possible to raise a reasonable vegetable plot in well-dug soil (12" - 18" deep at least), using liquid fertilizer alone.

· Liquid fertilizer is a critical component of a bio intensive garden in the tropics, especially in the rainy season when leaching is common.