In this article it is a question of prevention of diseases of cucumber plants in hothouses. Besides, measures of fight against main of them are given.
THAT CUCUMBERS were HEALTHY
The cucumber size, and otsutyostviye of diseases of cucumber plants in tepyolitsa means not. We offer the publication about prevention and measures of fight against main of them.
Web tick. Fight measures: in the autumn it is necessary to dig over the soil, provesti disinfection of hothouses. Esyoli a tick appeared, plants opryskivayut infusions and otvarami from a camomile chemist’s, kartofelya, onions napiform, chesnoka, a yarrow obyknovenyony.
It is easy to distinguish false mealy dew – on the top party of leaves flavovirent spots, from the bottom party – gray-violet nalet (mycelium) are formed. Spots gradually merge, leaves opadayut. False mealy dew develops on cucumbers in damp years, quickly progressiruet at temperatures 19-230C. The activator remains on the remains of sick leaves in a look dispute. They are hardy, soxranyayut the injuriousness in teyocheny 6 years. In the damp soil disputes sprout and proisxodit infection of shoots.
To be saved from false muchyonisty dew it is possible choosing steady grades. In hothouses it is necessary to avoid sharp fluctuation of temperature and high humidity. It is necessary to carry out spraying of 0,4 % – ache to a hlorokisye of copper or 1 % – ache boryodosky liquid.
Mealy dew: at first on the top party of a leaf, zayoty on the bottom the melyoky roundish spots covered white mealy for a short while are formed. Subsequently they merge, covering all area of a leaf. Sick leaves fall down. Inyofektsiya remains and on sornyakax: plantain, sow-thistle, etc. Most vigorously it razvivaetsya if there is a drop moisture. Against mealy dew of a plant spray fungicidami (70-80 % colloidal sulfur – 40 g on 10 l of water in zakyoryty and 20 g on 10 l in open soil; 10 % the isohair dryer – 60 g on 10 l of water). Infusions of a feltwort or pereprevyoshy hay well operate: 1 kg fill in 3 l vody, draw three days, filter, plant in 3 times and process a plant once a week.
Bacteriosis (or angular spottiness): on leaves prostupayut oil spots, kotoyory darken, dry, and the fabric drops out; on fruits at a bacteriosis vodyayonisty spots are observed. Removal of patients plodov helps sevooborot. Regularly 1 time in 10-12 days needs to be sprayed one-percentage bordeaux liquid.
Olive spottiness, askoxitoz, antraknoz also cause a certain damage. The main condition, kotoyory will protect cucumbers from vragov – strict observance rezhima temperatures and vlazhnosti. At defeat of plants antraknozy, askokhitozy, beyoly decay humidity of air in a hothouse reduce to 70 %, carry out an active ventilyayotsiya, stop waterings, udalyayut the struck parts of rasyoteniye.
Prevention is as follows: semena cucumbers disinfect warming up at temperature 50-520C within three days, and then dry in the thermostat at temperature 800S.
For destruction of a bakteriyoalny and fungoid infection seeds of cucumbers also obrabatyvayut TMTD. Before crops seeds of sowed cultures need to be presoaked at komnatyony temperature for the period from 12 to 24 hours with the subsequent endurance within two-three days at temperature +2-30C.
(On materials To Fermerska a hospodariate).