Green manure technique, practical advice

Green manure technique, practical advice

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Thegreen manureit is a practice designed to improve soil fertility. Theregreen manure techniqueconsists in sowing and letting one or more species of herbarium plants grow up to a certain stage of development (generally, until flowering), after which the vegetation is chopped or mowed and buried with thetotal green manure. With thegreen manure techniquepartial, mown vegetation is left on the ground or partially removed.

Green manure technique, the advantages
Theregreen manure techniqueis a great opportunity to regenerate tired soils in the family garden: with thegreen manureimproves chemical fertility and soil structure. Theregreen manure techniqueit must be alternated with the use of organic fertilizers.

Very popular is thegreen manure technique with legumes. Thegreen manure of legumes (pea, common vetch, clover, field bean ...) enriches the soil with nitrogen and other essential microelements: thanks to the radical symbiosis with the rhizobia (nitrogen-fixing bacteria), thelegumes, leave large quantities of nitrogen as a result of the decomposition of stems, leaves and roots. With thegreen manure of legumesthe soil is also enriched with phosphorus.

Based on the herbaceous plant species chosen for thegreen manure, you will have certain advantages for the soil. If with thegreen manure of legumes the soil acquires nitrogen and phosphorus, with thegreen manure of buckwheatpotassium can be returned to the soil while crucifers such as mustard and horseradish enrich the soil with sulfur.

The effectiveness of the green manure technique:chemical, biological and physical fertility
Nitrogen, phosphorus, potassium, sulfur… these are all elements already present in the soil but are found at a certain depth. Thanks to the particular characteristics of the root systems of herbaceous species, these microelements are absorbed by the plants entering tissues such as leaves, stems or flowers. Following the burial of the herbarium plants, the microelements are moved and concentrated in the first 20 cm of soil, right in the area affected by the greatest development of the root system of the plantsvegetable garden.

An additional advantage of thegreen manureit is given by biological fertility. By burying plant matter, the presence of life in the soil increases both at the level of fauna with earthworms, insects, millipedes ... and at the level of microbes. The structural / physical characteristics of the soil also improve. The soil becomes softer, permeable to air and water. Most of the crop residues are transformed into humus and perfect nutrients to protect the roots of the garden plants from parasites.

Autumn and spring green manure
We bring you a series of mixtures to sow thegreen manurein spring or autumn. The mixtures reported protect the soil from the formation of crusts, erosion, loss of nutrients and increase the fertility of the soil.

The indicated doses refer togreen manureof 100 m2 of mechanically sown land. With broadcast sowing it will be necessary to increase the doses by 50 percent.

1) Blend for green manure in spring or autumn:
-800 grams of oats (or barley or wheat) + 200 grams of common vetch + 500 grams of forage pea (or edible pea in half a branch)

2) Blend for spring or autumn green manuring:
-1.3 kg of barley + 450 grams of common vetch (or 900 grams of pea)

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