Seed potatoes, whole and cut, are often dusted or sprayed with a pencycuron containing fungicide to protect against black scurf caused by .

In subsistence farming and in a developing seed system where there is no official certification scheme operating, growers use the small tubers of the.

The provenance of seed for potato planting is situation-dependent. In temperate climates with cool summers, certified seed is usually grown in the.

In rapid multiplication schemes, plants are multiplied by in vitro or in vivo (not in closed tubes or containers) techniques. Cuttings are rooted to.

The seed tuber as propagation material of the potato plant is determined by, amongst other things, its size and age. The amount of seed planted per.

Like insects, potatoes have four distinct appearances. A butterfly deposits its eggs on a leaf, that generate a caterpillar that grows during a few.

There are several tillage methods in mechanized production systems. Ploughing is the most common method, especially with a moldboard plough that.

The knowledge that crops need nutrients (not just organic soil amendments) and the invention and application of fertilizers started with the.

Of all arable crops, potato needs the most extensive tillage and is not suitable for no (zero), low or minimum tillage. The latter are two systems.