Ultra-low Dose Spray of Small Plant Protection UAV: Control Effect on Wheat Powdery Mildew in Desert Oasis Wheat Region

doi:10.11924/j.issn.1000-6850.casb2021-1030

Abstract

Abstract:

The control effect of ultra-low dose spray of small plant protection UAV on wheat powdery mildew was studied in order to provide guidance for the scientific use of small plant protection UAV to prevent and control wheat diseases. The random block method was used to investigate the occurrence of wheat powdery mildew in each treatment, and the control effects of fungicides on wheat powdery mildew were evaluated. The results showed that 240 g/L Mefentrifluconazole·pyraclostrobin SC with the rate of 180 g/hm², 19% Picoxystrobin·propiconazole SC with the rate of 199.50 g/hm² and 23% Epoxiconazole·kresoxim-methyl SC with the rate of 103.50 g/hm² added with synergist Maifei had good control effects on wheat powdery mildew, and the control effects were 77.88%, 74.23% and 73.26%, respectively. The control effects of 42% Metrafenone SC with the rate of 189.00 g/hm², 430 g/L Tebuconazole SC with the rate of 129.00 g/hm², 75% Trifloxystrobin·tebuconazole WG with the rate of 202.50 g/hm² and 40% Myclobutanil WP with the rate of 120.00 g/hm² added with synergist Maifei on wheat powdery mildew were between 60.90% and 65.72%. The seven kinds of fungicides can all be used for ultra-low dose spray of small plant protection UAV to control wheat powdery mildew, and can be used alternately in production to slow down the emergence of drug resistance.

Key words: desert oasis wheat region, plant protection UAV, fungicide, Blumeria graminis f.sp.tritici, control effect, food production safety

CLC Number:

S482.2+99

CUI Yanhua, ZHOU Tingting, SHEN Yuyang, CHEN Li, LIN Guocang, YANG Anpei, ZHANG Hang, LEI Junjie, LI Guangkuo, GAO Haifeng. Ultra-low Dose Spray of Small Plant Protection UAV: Control Effect on Wheat Powdery Mildew in Desert Oasis Wheat Region[J]. Chinese Agricultural Science Bulletin, 2022, 38(27): 147-150.

Figures/Tables 2

References 21

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处理	药剂	有效成分用量/(g/hm²)
1	19%啶氧·丙环唑悬浮剂+增效剂迈飞乳油	199.50+300.00
2	23%醚菌·氟环唑悬浮剂+增效剂迈飞乳油	103.50+300.00
3	240 g/L氯氟醚·吡唑酯悬浮剂+增效剂迈飞乳油	180.00+300.00
4	42%苯菌酮悬浮剂+增效剂迈飞乳油	189.00+300.00
5	430 g/L戊唑醇悬浮剂+增效剂迈飞乳油	129.00+300.00
6	75%肟菌·戊唑醇水分散粒剂+增效剂迈飞乳油	202.50+300.00
7	40%腈菌唑可湿性粉剂+增效剂迈飞乳油	120.00+300.00
8	空白对照(CK)	-

处理	药剂	有效成分用量/(g/hm²)
1	19%啶氧·丙环唑悬浮剂+增效剂迈飞乳油	199.50+300.00
2	23%醚菌·氟环唑悬浮剂+增效剂迈飞乳油	103.50+300.00
3	240 g/L氯氟醚·吡唑酯悬浮剂+增效剂迈飞乳油	180.00+300.00
4	42%苯菌酮悬浮剂+增效剂迈飞乳油	189.00+300.00
5	430 g/L戊唑醇悬浮剂+增效剂迈飞乳油	129.00+300.00
6	75%肟菌·戊唑醇水分散粒剂+增效剂迈飞乳油	202.50+300.00
7	40%腈菌唑可湿性粉剂+增效剂迈飞乳油	120.00+300.00
8	空白对照(CK)	-

处理	药前病情指数	药后7 d		药后10 d		药后14 d
处理	药前病情指数	病情指数	防效/%	病情指数	防效/%	病情指数	防效/%
1	2.51±0.32	1.73±0.27	60.84±3.56 ab	1.42±0.22	74.23±3.05 ab	1.91±0.22	70.28±1.33 ab
2	2.84±0.12	2.04±0.11	59.11±2.63 ab	1.67±0.19	73.26±3.67 abc	2.22±0.19	69.61±2.25 ab
3	4.16±0.90	2.47±0.65	66.50±3.99 a	2.10±0.73	77.88±4.35 a	2.41±0.65	77.70±2.34 a
4	6.03±2.48	4.94±2.15	53.36±3.06 b	4.63±2.10	65.72±3.12 abc	5.31±2.10	63.76±2.97 bc
5	5.88±0.77	4.88±0.71	52.75±3.93 b	4.57±0.71	64.42±4.30 bc	5.49±0.61	63.33±3.06 bc
6	9.38±1.25	8.02±1.05	51.04±3.97 b	7.65±1.33	62.99±4.93 bc	8.95±1.33	62.77±3.66 bc
7	6.75±1.32	5.86±1.23	50.84±3.03 b	5.80±1.12	60.90±3.07 c	6.91±1.28	59.99±2.31 c
8	13.09±1.36	22.78±0.59	--	28.64±0.59	--	33.33±0.95	--

处理	药前病情指数	药后7 d		药后10 d		药后14 d
处理	药前病情指数	病情指数	防效/%	病情指数	防效/%	病情指数	防效/%
1	2.51±0.32	1.73±0.27	60.84±3.56 ab	1.42±0.22	74.23±3.05 ab	1.91±0.22	70.28±1.33 ab
2	2.84±0.12	2.04±0.11	59.11±2.63 ab	1.67±0.19	73.26±3.67 abc	2.22±0.19	69.61±2.25 ab
3	4.16±0.90	2.47±0.65	66.50±3.99 a	2.10±0.73	77.88±4.35 a	2.41±0.65	77.70±2.34 a
4	6.03±2.48	4.94±2.15	53.36±3.06 b	4.63±2.10	65.72±3.12 abc	5.31±2.10	63.76±2.97 bc
5	5.88±0.77	4.88±0.71	52.75±3.93 b	4.57±0.71	64.42±4.30 bc	5.49±0.61	63.33±3.06 bc
6	9.38±1.25	8.02±1.05	51.04±3.97 b	7.65±1.33	62.99±4.93 bc	8.95±1.33	62.77±3.66 bc
7	6.75±1.32	5.86±1.23	50.84±3.03 b	5.80±1.12	60.90±3.07 c	6.91±1.28	59.99±2.31 c
8	13.09±1.36	22.78±0.59	--	28.64±0.59	--	33.33±0.95	--