Summer green manure plants: which seeds to use for summer green manure and all the practical tips to fertilize the soil with the green manure technique.
Thegreen manureit is strongly recommended with sowing in autumn and mowing in spring, just before the flowering of green manure plants. The autumn green manure is very convenient because it protects the land in winter rest. Plus, in the fall, green manure plants don't have to compete with too many weeds.
The autumn green manure is typically used during the rest of the ground or for the green manure in the vineyard, to be sown at the end of the harvest. The summer green manure and spring is mainly used for the preparation of the seedbed and takes place in shorter times.
Sowing of summer and spring green manure
On the contrary, thesummer green manureand thatspring, they see more competition. For this reason, the broadcasting of green manure mixtures must be carried out in a dense way and as uniformly as possible.
In general, the green manure plants they have a good ability to compete with the spontaneous weeds typical of the summer period, however a more uniform sowing will help you to carry on the cultivation of only the botanical species useful for the soil.
List of summer green manure plants
Given that almost all the plants chosen for green manure belong to three well-known families in the vegetable garden, legumes, crucifers and grasses, we show you a small useful list of the most suitable plants forsummer green manure.
List of plants useful to use in summer green manure:
- Panic or Setaria italica
- Better pearled or Pennisetum glaucum
- Gentle sorghum or Sudanese sorghum, needs two cuttings
- Hybrid sorghum, can require 3 - 4 cuts
- Sugary sorghum
- Mung bean
- Persian clover
Starting from these botanical species belonging to the Graminaceae and Leguminosae family, we can obtain excellent combinations to perform thesummer green manure. Among the matching summer green manure plants, we point out:
- Mung bean and pearl millet
- Persian clover and pearl millet
- Climbing bean and Panic
- Climbing bean and hybrid sorghum
- Soy and buckwheat
- Panic and mung bean
- Pearl millet, panic and Alexandrian clover
- Buckwheat, pearl millet, soy and gentle sorghum
- Mung bean, pearl millet, panic and soy
- Mung bean, buckwheat, pearl millet and Persian clover
- Creeper bean, buckwheat, panic and sorghum
It is possible to obtain mixtures for thesummer green manurealso by combining more species and botanical varieties. A mixture of green manure seeds useful in summer is given by 9 different species: Sudanese sorghum (or gentle sorghum), pearl millet, soybean, buckwheat, panic, mung bean, Persian clover, Alexandrine clover and phacelia. The proportions to be respected to obtain a good blend see the use of:
- 4 kilograms of gentle sorghum seeds
- 6 kilograms of pearl millet
- 9 kilograms of soy
- 7 kilograms of buckwheat
- 6 kilograms of panic
- 6 kilograms of mung bean
- 3 kilograms of Persian clover
- 4 kilograms of Alexandrian clover
- 4 kilograms of facelia
Quantity expressed for one hectare of land. Remember that one hectare corresponds to 10,000 square meters of land.
Spring green manure plants
A mixture of seeds of spring green manure plants could include Alexandrian clover, sweet clover officinalis, sainfoin, incarnate clover, alfalfa, resupinated trifolium, buckwheat, horseradish, facela, vicia villosa, and minimal percentages of calendula, serradella, coriander, kornardo, cumin, fennel, dill and rocket salad.
Bury the green manure plants
To get the maximum benefit from green manure and to better incorporate the plant mass into the soil, the best time to bury the plant mass occurs when the green manure plants are about to bloom. With fast-growing plants such as summer ones (buckwheat is an example), it could take as little as 30 days from sowing to planting.
The vegetable mass should not be buried deeply: it is sufficient to incorporate the grass clippings to a depth of 10 - 15 cm. If buried deeper, due to poor oxygenation of the deeper layers of the soil, there may be problems with decomposition with insufficient humus formation.
Bury the green manure with the rotary hoe
To bury the plant part, agricultural tools such as the disc harrow, spading machine or rotary hoe can be used.
The rotary hoe is an indispensable tool for garden care. Excellent for the preparation of the seedbed, for working the soil, for burying organic matter and for the green manure technique.
Among the various products on the market I would like to point out the Einhell GC-RT rotary hoe. 1440 with electric power supply. In the purchase package there are six different cutters, for the green manure technique you will have to use the disc ones shown in the photo above.
This tool in garden centers is offered at a price of about 150 euros. Yes Amazon is bought with 133.89 euros and free shipping costs. Of course, it is a small investment but it is definitely useful for facilitating the cleaning and maintenance of the garden.