Article | 04. 2016 Vol. 34, Issue. 2
The Effect of Expanded Rice Hulls as a Root Substrate on the Suppression of Anthracnose Crown Rot in Strawberry

Buyeo-gun Agriculture Technology Center1
Nonsan Strawberry Experiment Station, Fruit Vegetable Research Institute, Chungnam ARES2
Department of Horticultural Sciences, College of Agriculture and Life Sciences, Chungnam National University3

2016.04. 242:248


This research was conducted to determine the effects of four different substrates, expanded rice hulls (ERH), commercial substrates for strawberries (CSS), clay sand (CS), and loamy sand (LS), on the inhibition of anthracnose crown rot (ACR) in strawberry. Mother plants of ‘Seolhyang’ strawberry were transplanted into an elevated bed in March, 2013 and March, 2014 and the runners connecting mother plants and daughter plants were cut in early August of both years. After separation, growth characteristics of the daughter plants were measured and then each daughter plant was inoculated with conidial suspensions of Colletotrichum fructicola, one of several species of Colletotrichum that causes ACR in strawberries. The incidence of ACR as influenced by the different substrates was investigated in both years. The daughter plants grown on CSS had the highest values for shoot height, leaf area, and fresh weight. Those grown on ERH and LS substrates also displayed good above-ground growth characteristics except for fresh weight, but the daughter plants grown on CS had the poorest above-ground growth characteristics. The ERH and CS treatments resulted in the highest number of primary roots and the greatest root weight. The CSS-grown daughter plants had the highest ACR disease index, followed by the CS and LS treatments, but there were no significant differences among the three substrates. However, the ERH-grown daughter plants had a markedly lower ACR disease index on October 11, 2013 and October 7, 2014. The CSS-grown daughter plants had high nitrogen and potassium contents and low calcium content, whereas the ERH-grown daughter plants had low nitrogen levels and high silicon levels. The results of this study provide basic information on the ability of the different substrates tested to provide disease suppression of ACR in the propagation of strawberry transplants.

1. Bélanger RR, Bowen PA, Ehret DL, Menzies JG (1995) Soluble silicon: its role in crop and disease management of greenhouse crops.Plant Dis 79:329-336. doi:10.1094/PD-79-0329  

2. Hwang IT, Cho KC, Lee JH, Chung SJ, Kim KS, Kim JG (2003) Effect of substrate kind and depth on growth and development of hydroponically-grown Chrysanthemum grandiflorum cv. Chungwoon. J Kor Soc Hort Sci 44:107-113 (In Korean)  

3. Jeong SK (2007). Characterization of symptom and determination of tissue critical concentration for diagnostic criteria in 'Maehyang'Strawberry. PhD Diss., Pai Chai Univ., Daejeon, Korea (In Korean)  

4. Jun HJ, Hwang JG, Son MJ, Choi MH, Yoon HS (2006) Effect of silicon on albinism of strawberry in elevated hydroponic system. J Bio-Environ Control 15:322-326 (In Korean)  

5. Kim DY, Kim S, Kang YI, Yun HK, Yoon MK, Kim TI, Choi JM (2012) Effect of runner cutting time on growth and yield during nursery of strawberry (cv. Maehyang and Seolhyang). J Bio-Environ Control 21:385-391. doi:10.12791/KSBEC.2012.21.4.385  

6. Kim KH, Lim SH, Kim SI, Yoo KC (2001) Improvement of method for supplying the nutrient solution at expanded rice hull substrates during hydroponic culture of tomato plants. J Bio-Environ Control 10:101-105 (In Korean)  

7. Korea Rural Economic Institute (KREI) (2014) 2014 Agricultural out-look KREI, Seoul, Korea (In Korean)  

8. Lee JW, Lee BY, Kim KY, Son JE (2000) Growth of vegetable seedlings in decomposed expanded rice hull-based substrates. J Kor Soc Hort Sci 41:249-253 (In Korean)  

9. Long DH, Lee FN, Tebeest DO (2000) Effect of nitrogen fertilization on disease progress of rice blast on susceptible and resistant cultivars. Plant Dis 84:403-409. doi:10.1094/PDIS.2000.84.4.403  

10. Marschner P (2012) Marschner’s mineral nutrition of higher plants. 3rd ed, Elsvier, NY, USA, pp 165-170  

11. Nam MH, Jung SK, Yoo SJ, Seo KS, Kim HG (1998) Cultural and pathogenic characteristics between Colletotrichum gloeosporioides and Glomerella cingulata isolated from strawberry in Korea. Korean J Plant Pathol 14:654-660 (In Korean)  

12. Nam MH, Jung SK, Lee YS, Choi JM, Kim HG (2006) Effects of nitrogen, phosphorus, potassium and calcium nutrition on strawberry anthracnose. Plant Pathol 55:246-249. doi:10.1111/j.1365-3059.2006.01322.x  

13. Nam MH, Kim TI, Gleason ML, Song JY, Kim HG (2008) First report of anthracnose fruit rot caused by Colletotrichum acutatum on strawberry in Korea. Plant Dis 92:1247  

14. Nam MH, Kim HS, Nam YG, Peres NA, Kim HG (2011) Fungicide spray program to reduce application in anthracnose of strawberry.Res Plant Dis 17:295-301. doi:10.5423/RPD.2011.17.3.295  

15. Nam MH, Park MS, Lee HD, Yu SH (2013) Taxonomic revaluation of Colletotrichum gloeosporioides isolated from strawberry in Korea.Plant Pathol J 29:317-322. doi:10.5423/PPJ.NT.12.2012.0188  

16. Nam MH, Kim TL, Kim HS, Lee IH, Lee HC, Jang WS (2014) Compendium of strawberry diseases and pests. 2nd ed. Rural Development Administration, Korea, pp 234 (In Korean)  

17. Park GS, Kim YC, Ann SW, Kang HK, Choi JM (2015). Influence of various root media in pot growth of ‘Seolhyang’ strawberry on the growth of daughter plants and early yield after transplant. Korean J Hortic Sci Technol 33:219-226 (In Korean)  

18. Rural Development Administration (RDA) (2003) Agricultural science technique research investigation and analysis standard. 4th ed,RDA, Suwon, Korea (In Korean)  

19. Seebold KW, Kucharek TA, Datnoff LE, Correa-victoria FJ, Marchetti MA (2001) The influence of silicon on components of resistance to blast in susceptible, partially resistant, and resistant cultivars of rice. Phytopathology 91:63-69. doi:10.1094/PHYTO.2001.91.1.63  

20. Son MJ (2009) Relationships between silicate and NH4-N application and the albinism of strawberry in hydroponic system. PhD Diss.,Daegu Univ., Gyeonsan, Korea (In Korean)  

21. Yun SY (1996) Study on composting of the potted rice hull. J Korean Soc Soil Sci Fert 29:124-129 (In Korean)