Growth and development
Buckwheat grows best in a cool moist climate such as is found in parts
of the Northeast. Although buckwheat can grow under a fairly wide range
of conditions, it is quite sensitive to climatic extremes.
The ideal growing temperature is about 70°F. It yields best
with
cool nights.
Buckwheat goes through its life cycle quickly, so there is
little time
to make up for delays in development. Seedlings emerge 3 to 5 days
after
sowing. Most of the leaf production occurs during the 3rd through 6th
week.
Buckwheat blooms and sets seed in the 6th and 7th week, with seed
filling
beginning in the 8th week. The grain is mature 10 to 12 weeks after
sowing.
Week by week of the buckwheat crop
| Week |
Growth stage |
Special concerns |
| 1 |
Germination |
Crusting |
| 2 |
Emergence |
Puddling |
| 3 |
Early vegetative growth |
|
| 4 |
Main vegetative growth |
|
| 5 |
Buds show |
Heat blasting |
| 6 |
Bloom and seed set |
Heat blasting |
| 7 |
Peak of flowering |
|
| 8 |
Seed fill |
|
| 9 |
Seeds start to brown |
|
| 10 |
Leaf yellowing |
Monitor maturity |
| 11 |
Maturing |
Windrow |
| 12 |
Mature |
Harvest, frost |
| 13 |
Drying straw |
Frost, Shattering |
Pictures
of the growth stages of buckwheat
What buckwheat doesn't like
-
Hard soil prevents the fine roots from growing.
-
Flooding and crusting before the first true leaves expand.
-
Light frost is lethal, therefore it is not usually sown in spring in
the
Northeast. A fall frost will kill the leaves and stems, so the crop
must
then be harvested immediately.
-
High temperatures during early flowering can prevent seed set (called
heat
blasting).
-
In dry weather, rapid transpiration causes the plants to wilt even if
soil
moisture is adequate.
-
Defoliation by deer, hail or mowing eliminates yield.
-
Most herbicides cause serious injury. None are registered for preplant
residual or post-emergence application on buckwheat in New York.