[PDF]Permaculture: Bonfils Winter Wheat

How to grow winter wheat?
The Fukuoka-Bonfils method


Winter wheat is normally sown in
September-November and
grows just a little before going
dormant in winter. The winter cold trig-
gers flowering. After the floral initiation in
January, the plants develop a number of
tillers and are finally harvested in August.

There are a number of drawbacks in
growing winter wheat the conventional
way. As the plants are still small at the onset
of winter, soil erosion is high. Tillering
takes place in February-March when tem-
peratures are sub-optimal for this physio-
logical stage of plant growth. The plants are
vulnerable and require numerous treat-
ments against weeds and fungi. The fre-
quent tractor passes over the land lead to
compaction and bad aeration of the topsoil.

Marc Bonfils' method

Is there an alternative? Can we regenerate
our soils and still grow the food we need?
Marc Bonfils has experimented with alter-
native cultural measures in the region of
Beauce, France, for many years and has
developed a system that embraces the gen-
eral principles of permaculture. Although
Bonfil's method is primarily for wheat, it is
easily adaptable to other cereals. Bonfils
found a way of growing food without


ploughing in the European climate, as
Masanobu Fukuoka did in Japan.

At the end of June - much earlier than
in the traditional way - wheat is sown, or
rather pressed into the soil at a spacing of
60cm, through the carpet of spreading per-
ennial clover, previously sown in April. The
clover cover assures Nitrogen fixation, bet-
ter bacterial life, and development of algae
that are also capable of fixing Nitrogen.
During its long vegetative period the wheat
plant makes deep roots before winter sets
in, thanks to better availability of nutrients
and greater bacterial activity. This gives the
plants a head start for the next summer.
Yields of over 1 5 tons per hectare (6 tons
per acre) have been obtained in this man-
ner. A comparison of some parameters:


Conventional Bonfils

Plants/m 350 1.5-4

Ears/plant 0-3 100-150

Earlets/plant 1 2-1 5 35

Grains/ear 20-30 40-60

We ight of grai n s Low High


Even before harvesting of the ears, the new
wheat crop is already pressed in through
the clover carpet amongst the maturing



'bushes' of wheat. Clover is a perennial: it is
not sown each year but simply cut down at
the beginning of the season, at a height that
does not damage the wheat plants.

After harvesting in August, the straw
and chaff are returned to the field. In this
method, tillage is reduced to a bare
minimum, avoiding practices like
ploughing and compaction that retard the
process of revitalising the soil.

Advantages

The optimal temperature for tillering is
20-25°c. In Bonfils' method, unlike in the
conventional, tillering starts already in
August of the year of sowing, when temper-
atures are closer to the optimal. A better
root system develops and a better plant
stand is obtained, reducing leaching of
nutrients in winter. These bigger plants
appear to resist the cold better than young
seedlings. With a wider stand, much more
tillers are produced, each tiller leading to an
ear. The tillering period starting in August is
much longer than with the conventional
winter wheat growing method.

Problems

The main danger lies in the wrong choice
of variety: if a strictly winter variety is not
used, then the plants will go to grain before
winter, producing less than the standard
methods. Most modern varieties, being
hybrids between winter and spring or
warm-climate types, have this tendency.
Therefore, one should seek long-straw,
traditional varieties, with strong vegetative
vigour that gives plenty of side-shoots and
dense foliage.

Mechanical harvesting constitutes a
problem in the Bonfils method, as harvest-
ing takes place amidst young, vulnerable
seedlings. Cutting should be at least 5 cm
above the soil.

A problem of the wheat-clover associa-
tion is that the wheat grows too tall
because of the richness in soil Nitrogen.
Sowing wide, permitting maximum sun-
shine and thus reducing the risk of lodging
of the wheat, can counteract this.


Adapted from

- Marc Bonfils. Le ble d'hiver et sa physiologie
vegetate selon la methode Fukuoka-Bonfils .
Permaculture Pyrenees. Association las Encantadas.
B.P. 217. F-11300 Limoux, France.

- Marc Bonfils. The harmonious wheatsmlth: can we
regenerate our soils and still grow the food we
need? Permaculture Association, Old Cuming Farm,
Buckfastleigh, Devon TQ11 OLP, UK.

Similar experiences are presented in:

- Sayre KD, Moreno Ramos OH. 1997. Applications of
raised-bed planting systems to wheat. Mexico, DF

(Mexico): CIMMYT. 36 p. Series: CIMMYT Wheat
Special Report (WPSR) No. 31.

I t E I A NEWSLETTER* DECEMBER 2000 1 3