[Objective] This study was conducted to select a batch of new high-effi- cient low-toxicity high-selectivity pesticides for the application in tea gardens. [Method] This experiment was designed with 12 treatments incl...[Objective] This study was conducted to select a batch of new high-effi- cient low-toxicity high-selectivity pesticides for the application in tea gardens. [Method] This experiment was designed with 12 treatments including clear water as the CK, in randomized block arrangement, with 4 replications, and each plot had an area of 30 m2. The pesticides were sprayed in the high occurrence period of larvae of tea lesser leafhopper when tea shoots grew vigorously. [Result] In the 11 pesti- cides, 100 g/L bifenthrin EC , 70% imidacloprid WDG and 150 g/L indoxacarb EC were the best pesticides with efficacies above 90%; and in the bio-pesticides, 0.5% azadirachtin SC showed an efficacy over 87.97%. [Conclusions] Among the tested pesticides, 100 g/L bifenthrin EC , 70% imidacloprid WDG and 150 g/L indoxacarb EC could effectively control tea lesser leafhopper during the outbreak of tea lesser leafhopper, and when the occurrence degree of tea lesser leafhopper is below the medium level, environment-friendly 0.5% azadirachtin SC, 0.5% veratrine SC, 0.3% matrine SC and 4.0×10^10 spores/g Beauveria bassiana OD could be selected.展开更多
Apolygus lucorum（Meyer-Dür.） and Erythroneura apicalis（Nawa） are important pests that affect the quality and the yield of grapevine and cause huge economic losses. This paper focuses on the selection of effec...Apolygus lucorum（Meyer-Dür.） and Erythroneura apicalis（Nawa） are important pests that affect the quality and the yield of grapevine and cause huge economic losses. This paper focuses on the selection of effective botanical pesticides to control A. lucorum and E. apicalis. This experiment explores the effect of several botanical pesticides for A. lucorum and E. apicalis, including the 0.5% veratrine, the0.6% Oxygen·Lactone agent, the 5% natural pyrethrin, the composite neem pesticide, the rotenone and the composite nicotine. The 0.5% veratrine shows a stable control efficacy, which is higher than 60% in Chengdu, while the composite nicotine shows the highest efficacy against A. lucorum, which is above 70%. In Yinchuan,the 0.5% veratrine shows the highest efficacy, against the first generation adults and the second generation larvae of E. apicalis, while the 5% natural pyrethrin shows 100% control efficacy against E. apicalis in Nanjiang. The 0.5% veratrine and the composite neem could be used as effective pesticides to control A. lucorum and the 5% natural pyrethrin can be used to control E. apicalis. They could be widely used in the production of pollution-free grapes.展开更多
Safflower （Carthamus tinctorius） has its own limited factors, especially insect pests. There are several injurious insect pests reported from various safflower growing areas in Iran, causing severe and economical lo...Safflower （Carthamus tinctorius） has its own limited factors, especially insect pests. There are several injurious insect pests reported from various safflower growing areas in Iran, causing severe and economical losses on various parts of safflower plants. They are safflower Budfly and capsulfly （Acanthiophilus helianthi）, aphid （Uroleucon carthami）, green leafhopper （Empoasca decipiens）, ground bug （Oxycarneus pallens）, grampod borer and capsule borer or bordered straw （Heliothis （and or Heliocaverpa） peltigera）, red spider mite and two spotted spider mite （Tetranychus urtica）, beet armyworm （Spodoptera exigua）, scarab beetle （Tropinota （and or Epicometis） hirta）, Egyptian cotton leaf （Spodoptera littoralis）, cotton boll worm （Heliothi absouleta） and so on. The other reported safflower insect pests from other countries are wireworms （Limonius spp.）, lygus bugs （Lygus hesperus）, flower thrips （Eastern or Western） or onion thrips （Thrips tabaci）, and seed corn maggots （Delia platura）, sunflower moths （Helianthus annuus） and Caterpillar （Perigaea capensis） are the serious pests of this crop. The other reports showed that some stored-product insects are capable of establishing infestations in safflower seeds and seed meal under suitable conditions. Only Lasiaderma serricorne, Stegobium penliceum, and the four species of Trogodema were to be as the infectious pests. Safflower is also attractive to several beneficial insects, including lady beetles and lacewings that may provide insect control in surrounding fields.展开更多
基金Supported by Project from Anhui Academy of Agricultural Sciences(16A1133)
文摘[Objective] This study was conducted to select a batch of new high-effi- cient low-toxicity high-selectivity pesticides for the application in tea gardens. [Method] This experiment was designed with 12 treatments including clear water as the CK, in randomized block arrangement, with 4 replications, and each plot had an area of 30 m2. The pesticides were sprayed in the high occurrence period of larvae of tea lesser leafhopper when tea shoots grew vigorously. [Result] In the 11 pesti- cides, 100 g/L bifenthrin EC , 70% imidacloprid WDG and 150 g/L indoxacarb EC were the best pesticides with efficacies above 90%; and in the bio-pesticides, 0.5% azadirachtin SC showed an efficacy over 87.97%. [Conclusions] Among the tested pesticides, 100 g/L bifenthrin EC , 70% imidacloprid WDG and 150 g/L indoxacarb EC could effectively control tea lesser leafhopper during the outbreak of tea lesser leafhopper, and when the occurrence degree of tea lesser leafhopper is below the medium level, environment-friendly 0.5% azadirachtin SC, 0.5% veratrine SC, 0.3% matrine SC and 4.0×10^10 spores/g Beauveria bassiana OD could be selected.
基金Supported by the Special Program for the Construction of Modern Agricultural Industrial Technological System(CARS-30-bc)~~
文摘Apolygus lucorum（Meyer-Dür.） and Erythroneura apicalis（Nawa） are important pests that affect the quality and the yield of grapevine and cause huge economic losses. This paper focuses on the selection of effective botanical pesticides to control A. lucorum and E. apicalis. This experiment explores the effect of several botanical pesticides for A. lucorum and E. apicalis, including the 0.5% veratrine, the0.6% Oxygen·Lactone agent, the 5% natural pyrethrin, the composite neem pesticide, the rotenone and the composite nicotine. The 0.5% veratrine shows a stable control efficacy, which is higher than 60% in Chengdu, while the composite nicotine shows the highest efficacy against A. lucorum, which is above 70%. In Yinchuan,the 0.5% veratrine shows the highest efficacy, against the first generation adults and the second generation larvae of E. apicalis, while the 5% natural pyrethrin shows 100% control efficacy against E. apicalis in Nanjiang. The 0.5% veratrine and the composite neem could be used as effective pesticides to control A. lucorum and the 5% natural pyrethrin can be used to control E. apicalis. They could be widely used in the production of pollution-free grapes.
文摘Safflower （Carthamus tinctorius） has its own limited factors, especially insect pests. There are several injurious insect pests reported from various safflower growing areas in Iran, causing severe and economical losses on various parts of safflower plants. They are safflower Budfly and capsulfly （Acanthiophilus helianthi）, aphid （Uroleucon carthami）, green leafhopper （Empoasca decipiens）, ground bug （Oxycarneus pallens）, grampod borer and capsule borer or bordered straw （Heliothis （and or Heliocaverpa） peltigera）, red spider mite and two spotted spider mite （Tetranychus urtica）, beet armyworm （Spodoptera exigua）, scarab beetle （Tropinota （and or Epicometis） hirta）, Egyptian cotton leaf （Spodoptera littoralis）, cotton boll worm （Heliothi absouleta） and so on. The other reported safflower insect pests from other countries are wireworms （Limonius spp.）, lygus bugs （Lygus hesperus）, flower thrips （Eastern or Western） or onion thrips （Thrips tabaci）, and seed corn maggots （Delia platura）, sunflower moths （Helianthus annuus） and Caterpillar （Perigaea capensis） are the serious pests of this crop. The other reports showed that some stored-product insects are capable of establishing infestations in safflower seeds and seed meal under suitable conditions. Only Lasiaderma serricorne, Stegobium penliceum, and the four species of Trogodema were to be as the infectious pests. Safflower is also attractive to several beneficial insects, including lady beetles and lacewings that may provide insect control in surrounding fields.
