How Durable Are Ceramic Dishes

Pisum sativum Asch. et Gr

The pea is a plant that has limited needs for temperatures to grow and develop, but shuns the high heat and drought. Germinates with acceptable speed with soil temperatures around 4 ° C, while the optimum temperature for the completion of the life cycle is between 15 ° C and 18 ° C.

The cold resistance of pea is limited, but varies greatly with the degree di sviluppo della pianta e con la varietà. La fase di massima resistenza è lo stadio “4-5 foglie”, in cui sopporta senza danno temperature fino a -8 °C allo stadio di fioritura anche gelate leggere sono dannose.
Il pisello teme moltissimo i ristagni di umidità che rendono il terreno freddo e asfittico. Non ha esigenze particolari riguardo al terreno, tuttavia i terreni più adatti sono quelli piuttosto sciolti, ben areati, con moderato contenuto di calce e pH compreso tra 6,5 e 7,5, di buona capacità idrica.

È buona norma prevedere un intervallo di almeno 4 o 5 anni prima di far tornare il pisello sullo stesso terreno, a causa delle malattie.

L’epoca planting is more common in Northern Italy in October, November in central and southern Italy in the open field planting should be made to files on distant from 0.18 to 0.25 m. The seeds should be placed at a depth of 50-70 mm, in order to reduce predation by birds and rodents. The main adverse

where the pea is exposed are the following.
- Downy mildew, the disease occurs in cold weather and rain to form chlorotic spots on upper leaves and white mold first, then purple on the bottom;
- anthracnose, the disease usually appears on leaves and pods, on which causes grayish-white round spots with reddish brown margin.
- Fusarium, causing necrosis of the neck resulting in rapid yellowing and wilting of seedlings.

- green and black aphids, forming colonies on the leaves of plants carrying decay and spread the virus diseases of pea;
- weevil, the seeds are very subject to be attacked by the weevil at the end of flowering lays eggs on small pods in which seeds and larvae then move develop.