재배년도별 벼 키다리병 방제를 위한 농가의 종자소독방법 현황

이순계^1＊이광한, 황홍연, 임채룡, 최병준, 변종영²

충남농업기술원¹, 충남대학교 식물자원학부²

Sun Gye Lee¹*, Gang Han Lee¹, Hong Hun Hang¹, Chae Yong Lim¹, Byung Jun Choi¹, 

and Jong Yeong Pyon²

1^{Chungnam Agricultural Research & Extension Service and}2^{Chungnam National University}

실험목적

최근 벼 키다리병의 발생면적이 급증하여 농가의 민원발생에 따라 농민교육시 벼 키다리병방제에 대한 농가 실천현황, 발생 양상을 조사하여 농민교육에 활용하고자 본 조사를 수행하였다. 

재료 및 방법

○ 본 실험은 2007년과 2008년에 걸쳐 충남의  11개 시‧군을 대상으로 키다리병 방제를 위한 재배기술의 변화과정을 구명하고자 2007년은 45농가, 2008년은 50농가를 대상으로 조사하였다.

○ 조사는 농가를 방문하여 실시하였으며 정부보급종 분양농가와 자가채취 농가를 대상으로 하였는데 2008년 자가채취 농가는 선도농가를 중심으로 종자소독, 최아 방법 및 키다리병 발생 등을 조사하였다.

실험결과

○ 벼 키다리병 방제를 위한 종자소독제는 2007년도는 prochloraz 처리가 89% 사용되었으나, 2008년에서 prochloraz+fludioxonil의 사용이 급격히 증가하였다.

○ 종자소독 약제별 육묘단계별 벼 키다리병 발생은 prochloraz 약제처리에서는 못자리와 본답에서 동일하게 발생이 되었으나, prochloraz+fludioxonil 약제처리에서는 못자리에서 키다리병의 발생이 없었다.

○ 품종별 벼 키다리병의 발생비율은 2007년도에는 주남벼가 65%이었고, 2008년도는 주남벼

43%, 호품벼 33%로 밀양 165호 계통에서 발생이 많았다. 

○ 종자소독을 위한 방법으로 최아기를 이용하는 농가비율은 2007년 45%에서 2008년 54%로 증대되었고, 종자소독 시간도 2007년 67%에서 2008년 84%로 길어졌다. 

󰠏󰠏󰠏󰠏󰠏󰠏󰠏󰠏󰠏󰠏󰠏󰠏󰠏󰠏󰠏󰠏󰠏󰠏󰠏󰠏󰠏󰠏󰠏󰠏󰠏󰠏󰠏󰠏󰠏󰠏󰠏󰠏󰠏󰠏󰠏󰠏󰠏󰠏󰠏󰠏󰠏󰠏󰠏󰠏󰠏󰠏󰠏󰠏󰠏󰠏󰠏󰠏󰠏󰠏󰠏󰠏󰠏󰠏󰠏󰠏󰠏󰠏󰠏󰠏󰠏󰠏󰠏󰠏󰠏󰠏󰠏󰠏󰠏󰠏󰠏󰠏󰠏󰠏󰠏󰠏󰠏󰠏

연락처 : 이순계  E- mail : Isoong4@hanmail.net  전화 : 041- 732- 7008

Table 1. Farmers for the survey of bakanae disease occurrence in rice

Total	2007			2008
	Sutotal	Government supplying seed	Farmer own collection seed	Sutotal	Government supplying seed	Farmer own collection seed
95	45	30	15	50	30	20

Table 2. Seed disinfection methods by farmers for control of bakanae disease

Total	2007				2008
	Sutotal	Prochloraz	Carpropamid+ Fludioxonil+ Imidacloprid	Other	Sutotal	Prochloraz	Prochloraz+ Fludioxonil	Other
95	45 (100%)	40 (89)	1 (2)	4 (9)	50 (100%)	24 (48)	25 (50)	1 (2)

Table 3. Occurrence of bakanae disease by rice growing stages after fungicide seed treatments.

구분	2007				2008
	Sutotal	Prochloraz	Carpropamid+ Fludioxonil+ Imidacloprid	Other	Sutotal	Prochloraz	Prochloraz+ Fludioxonil	Other
Rice seed	18 (100%)	18 (100)	0 (0)	0 (0)	14 (100%)	14 (100)	0 (0)	0 (0)
Paddy	18 (100%)	18 (100)	0 (0)	0 (0)	21 (100%)	14 (67)	7 (33)	0 (0)

Table 4. Occurrence degree of bakanae disease by seed disinfection methods of bakanae disease

Degree (%)	Total	2007				2008
		Subtotal	Prochloraz	Carpropamid+ Fludioxonil+ Imidacloprid	Other	Subtotal	Prochloraz	Prochloraz+ Fludioxonil	Other
0	55	27	22	1	4	28	8	19	1
0.1～1%	29	15	15	0	0	14	8	6	0
1～5%	8	2	2	0	0	6	5	1	0
5～10%	0	0	0	0	0	0	0	0	0
10～30	3	1	1	0	0	2	2	0	0

Table 5. Occurrence of bakanae disease by rice cultivars. 

Number of cultivars	2007						2008
	Subtotal	Junam	Dongjin #1	Onnuri	Ilpum	Nam- pyung	Subtotal	Junam	Hopum	Pyungan	Dami	Ilmi
21 (100%)	18 (100%)	12 (67)	3 (16.5)	1 (5.5)	1 (5.5)	1 (5.5)	21 (100%)	9 (43)	7 (33)	2 (9.5)	2 (9.5)	1 (5)

Number of farmers	2007						2008
	Subtotal	Seed soaking		Conventional		Other	Subtotal	Seed soaking		Conventional		Other
		24hr	48hr	24hr	48hr	10min		24hr	48hr	2hr	48hr	10min
95 (100%)	45 (100%)	3 (6)	18 (40)	8 (18)	12 (27)	4 (9)	50 (100%)	1 (2)	26 (52)	6 (12)	16 (32)	1 (2)