23678 Effect of Sodium Hypochlorite as a Disease Control Against Violet Root Rot Caused by Helicobasidium mompa on Apple Trees

Wednesday, August 10, 2016
Georgia Ballroom (Sheraton Hotel Atlanta)
Sung-Hee Lee , Chungcheongbuk-do Agricultural Research and Extension Service, Cheongju, Korea, The Republic of
Yeuseok Kwon , Chungcheongbuk-do Agricultural Research and Extension Service, Cheongju, Korea, The Republic of
Hyun-Man Shin , Chungcheongbuk-do Agricultural Research and Extension Service, Cheongju, Korea, The Republic of
Ik-Jei Kim , Chungcheongbuk-do Agricultural Research and Extension Service, Cheongju, Korea, The Republic of
Sang-Yeong Nam , Chungcheongbuk-do Agricultural Research and Extension Service, Cheongju, Korea, The Republic of
Eui Yon Hong , Chungcheongbuk-do Agricultural Research and Extension Service, Cheongju, Korea, The Republic of
Daeil Kim , Chungbuk National University, Cheongju, Korea, The Republic of
Jae-Soon Cha , Chungbuk National University, Cheongju, Korea, The Republic of
Poster Presentations
  • Effect of Sodium Hypochlorite as a Disease Control against Violet Root Rot Caused by Helicobasidium mompa on Apple Trees (899.0 kB)
    • This study was performed to control disease, enhance vigor through rhizospheric rooting and then recover tree growth using sodium hypochlorite (NaClO) against violet root rot disease on apple trees in Chungbuk province. From the experimental results in a field that drenched NaClO according to concentration on an apple cultivar ‘Sansa’ seriously infected to violet root rot, 0.5% NaClO treatment showed significant difference at the range of both 5~10 cm and above 30 cm for shoot length and induction of rooting on root stock in subsoil. Also, 0.25% and 0.5% NaClO treatments improved 51.4% and 58.4% for relative crown density that based on the number of leaves and average leaf area, respectively. Moreover, the two treatments were different significantly on both fruit weight and total soluble solid from the analysis for fruit characteristics as well as much about 2 times from the analysis of starch content for fruiting shoots. In conclusion, our results suggest that one time drenching to 10L per a tree of 0.25~0.5% NaClO in mid-May could be effective to control the violet root rot caused by H. mompa and also, improve the vigor recovery with rooting on rhizosphere on apple trees.

     Additional key words: Apple tree, violet root rot, Helicobasidium mompa, sodium hypochlorite, disease control

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