Preliminary communication

Root rot in hydroponic cultivation with reference to Thielaviopsis basicola and Pythium sp.

Bogdan Cvjetković ; Sveučilište u Zagrebu, Agronomski fakultet
Zdravka Sever ; Hrvatski centar za poljoprivredu hranu i selo, Zavod za zaštitu bilja
Sanja Fabek ; Sveučilište u Zagrebu, Agronomski fakultet

Abstract

The paper lists causal agents of diseases that have so far been established in hydroponic cultivation (Botrytis cinerea, Passalora fulva, Sclerotinia sclerotiorum, Erysiphe cichoracearum, Pseudomonas corugata, Phytophthora parasitica, Fusarium oxysporum, Pythium spp.) on mineral wool in Croatia. With the introduction of some new techniques of cultivation, such as cultivation on the floating containers and aquaponics, some new diseases previously undetected in Croatia have emerged. Thus, in the cultivation on the floating containers, in 2011 on lettuce (Lactuca sativa) and in 2012 on lamb’s lettuce (Valerianella olitoria), root rot were observed. Also the same changes on roots were observed on lettuce in aquaponics in 2016. In this paper symptoms of these diseases were described and their causal agents determined. Fungus Thielaviopsis basicola was found on roots of lamb’s lettuce while a Pythium species, regardless of the method of cultivation, was found on lettuce. The advantages and disadvantages of vegetable production in hydroponics were discussed and protection measures were proposed. These are the first reports of Thielaviopsis basicola on lamb’s lettuce and Pythium on lettuce in hydroponic cultivation in Croatia.

Keywords

hydroponics; lettuce; lamb’s lettuce; Thielaviopsis basicola; Pythium

Hrčak ID:

174784

URI

https://hrcak.srce.hr/174784

Publication date:

1.11.2016.

Article data in other languages: croatian

Visits: 2.408 *