scholarly journals Population Incidence and Efficacy of Chemical Control against Rice Leaffolder (Cnaphnalocrocis medinalis Guenee) (Pyralidae: Lepidoptera)

2019 ◽  
pp. 1-7
Author(s):  
Muhammad Bilal ◽  
Mubashar Hussain ◽  
Muhammad Umer ◽  
Numan Ejaz ◽  
Hamza Armghan Noushahi ◽  
...  
Keyword(s):  
Field Experiment ◽  
Chemical Control ◽  
Leaf Damage ◽  
Yield Losses ◽  
Kharif Season ◽  
Population Incidence ◽  
Lambda Cyhalothrin ◽  
Percent Increase ◽  
Rice Leaffolder ◽  
Research Institute

Rice leaffolder has become a serious pest in the last two decades. It causes up to 50 to 70 percent leaf damage and consequently up to 46 percent yield losses in case of severe infestation. A field experiment was conducted at Rice Research Institute, Kala Shah Kaku Punjab Pakistan in which population incidence of rice leaffolder and efficacy of different insecticides evaluated. Population observed form end August to termination of Kharif season. Highest population of rice leaffolder was recorded in September and October. Insecticides, proved, viz., Karate 2.5EC (Lambda cyhalothrin) @ 160ml 86.65%, Pravo 10EC (fipronil +lambda cyhalothrin) @ 300 ml 85.25%, Hoopoe 4G (cartap hydrochloride) @ 9 kg 85.85, Oncol 3G (Benfuracarb) @8 Kg 89.53%, Mover Plus 4.3G (cartap hydrochloride) @ 4.5 Kg 82.77%, Star 4G (cartap hydrochloride) @ 9 kg 78.40%, Padan 4G(cartap hydrochloride) @ 9 kg 86.83%, Virtako 0.6G (thiamethoxam + chlorantraniliprole) @ 4 kg 72.05%, Ferterra 0.4G (Chlorantraniliprole) @ 4 kg 91.21%, Paidan 8G (Cartap hydrochloride) 8 kg 84.18% effective. Insecticide treatedplots yielded higher than the control. Highest 3.62 t/ha was recorded with Hoopoe 4G and lowest with Star 4G 2.99 t/ha as compared to 1.95 t/ha of control. All treatments were statistically at par with each other but significantly different from control. In case of yield benefits, 34.78 percent to 46.27 percent increase was recorded. All the treatments were proved statistically at par against beneficial fauna.

scholarly journals Seed yield, nutrient balance and economics of mungbean cultivation as influenced by different nutrients management under AEZ-28

2015 ◽  
Vol 40 (1) ◽  
pp. 77-93 ◽  
Author(s):  
MAH S Jahan ◽  
MAR Sarkar ◽  
NCD Barma ◽  
MNA Mondal ◽  
MNS Ferdousi
Keyword(s):  
Field Experiment ◽  
Seed Yield ◽  
Nutrient Management ◽  
Agricultural Research ◽  
Management Practice ◽  
Nutrient Balance ◽  
Research Centre ◽  
Agricultural Research Institute ◽  
Research Institute

A field experiment was conducted at Regional Wheat Research Centre of the Bangladesh Agricultural Research Institute, Joydebpur, Gazipur, Bangladesh for 2 consecutive years during 2007 and 2008 to find out the optimum nutrient management practice for seed yield, nutrient balance and economics of mungbean. Twelve nutrient management treatments were tested in RCBD with 3 replications. Treatments were without CRI T1=HYG (0-24-40-48-24-3-1.2), T2=MYG (0-20-36-40-20-2-1), T3=IPNS (5000-9-37-36-21-3-1.2), T4=STB (0- 20-36-40-22-2-1), T5=FP (0-6-5-4-0-0-0), T6=CON (0-0-0-0-0-0-0) and with CRI T7=HYG+CRI, T8=MYG+CRI, T9=IPNS+CRI, T10=STB+CRI, T11=FP+CRI, T12=CON+CRI kg ha-1 CDNPKSZnB for mungbean. The maximum seed yield of mungbean was obtained from STB+CRI (1.57 t ha-1) followed by IPNS+CRI (1.54 t ha-1), STB (1.54 t ha-1), IPNS (1.52 t ha-1), HYG+CRI (1.44 t ha-1) and HYG (1.41 t ha-1) in 2007. Similar trend was found in 2008. Numerically higher yield and yield contributing parameters were noticed in CRI plots than without CRI. N and K balance were found negative in all the treatments. P, S, Zn and B balance were found positive in case of HYG, MYG, IPNS and STB along with or without CRI nutrient managements. While in case of FP and CON, the balance was shown almost negative. The maximum gross return and margin was obtained from STB+CRI followed by STB. Slightly higher BCR (3.00) was recorded from STB followed by STB+CRI (2.91).Bangladesh J. Agril. Res. 40(1): 77-93, March 2015

scholarly journals INSECTICIDE APPLICATION SPEED IN THE CONTROL OF LEPIDOPTERAN PESTS IN SOYBEAN1

2020 ◽  
Vol 33 (1) ◽  
pp. 72-80
Author(s):  
LENIO CESAR MORAES DE CAMARGO ◽  
DANILO DE BRITO GARCIA ◽  
OTÁVIO JORGE GRÍGOLI ABI SAAB ◽  
AMARILDO PASINI ◽  
DANILO AUGUSTO SARTI ◽  
...  
Keyword(s):  
Chemical Control ◽  
General Rule ◽  
Leaf Damage ◽  
Application Technology ◽  
Spray Volume ◽  
The Difference ◽  
Soybean Plants ◽  
Efficacy Parameters ◽  
Great Damage ◽  
Chrysodeixis Includens

ABSTRACT During the chemical control of pests, diseases and weeds, great importance is given to the phytosanitary product and little attention to the application technology. The control of soybean pests did not escape the general rule and, therefore, some pests known as secondary, and even nonexistent, became responsible for great damage to the soybean crop. The objective of this work was to test the application of insecticide at different speeds (5 and 16 km h-1) by varying the rates of application in 108 to 110 and 199 to 216 L ha-1 to quantify the difference in the coverage percentage of the applied insecticide in the canopy of soybean plants, and to verify the interaction of these factors with efficacy parameters for the control of caterpillars (Helicoverpa armigera and Chrysodeixis includens). In general, the highest leaf coverage by the insecticide was observed in the upper part of the canopy, regardless of the rate and speed of application, resulting in lower leaf damage. For the middle and lower thirds of the plant, the decrease in speed influenced more the decrease in leaf damage by the caterpillars than the increase in the spray volume.

scholarly journals Factor Influencing the Resurgence of Brown Planthopper in Bangladesh

2020 ◽  
Vol 18 (1) ◽  
pp. 117-128
Author(s):  
ABMA Uddin ◽  
KS Islam ◽  
M Jahan ◽  
A Ara ◽  
MAI Khan
Keyword(s):  
Brown Planthopper ◽  
Lethal Dose ◽  
Reproductive Physiology ◽  
Recommended Dose ◽  
Insecticide Treatment ◽  
Lambda Cyhalothrin ◽  
Brown Plant Hopper ◽  
Research Institute

Possible causes of brown plant hopper resurgence were determined at the net-house of Entomology Division of Bangladesh Rice Research Institute (BRRI) during 2015. Causes of resurgence in the form of resurgence ratios were higher with acetamiprid, acephate, chlorpyrifos, cypermethrin, deltamethrin, fenvalerate, lambda cyhalothrin, thiamethoxam insecticides compared to imidacloprid, cartap, dinotefuran, isoprocarb /MIPC, phenthoate, pymetrozine when even applied at recommended dose. However, thiamethoxam, imidacloprid, isoprocarb / MIPC and cartap applied at sub-lethal dose produced higher resurgence ratio of BPH than others. Isoprocarb / MIPC, a commonly used recommended insecticide was found to have a higher resurgence ratio with the insecticide treatment at the egg stage (1.71) and combination of all stages (0.82). These insecticides influenced on the growth and reproductive physiology of rice brown planthopper and consequently resurgence ratio ranged increased. SAARC J. Agri., 18(1): 117-128 (2020)

scholarly journals CHEMICAL CONTROL OF SEED-BORNE FUNGAL PATHOGENS OF SUNFLOWER / CONTROL QUÍMICO DE PATÓGENOS DE SEMILLAS EN GIRASOL / MESURES DE DÉFENSE CONTRE LES CHAMPIGNONS PATHOGÈNES DU TOURNESOL TRANSMIS PAR LA SEMENCE

Helia ◽  
2001 ◽  
Vol 24 (35) ◽  
pp. 67-72
Author(s):  
A Rauf Bhutta ◽  
M.M. Rahber Bhatti ◽  
Iftikhar Ahmad ◽  
Ishrat Sultana
Keyword(s):  
Seed Germination ◽  
Chemical Control ◽  
Sunflower Seed ◽  
Fungal Pathogens ◽  
Considerable Improvement ◽  
Complete Elimination ◽  
Fungal Population ◽  
Percent Increase ◽  
And Control

SUMMARYFive fungicides, namely Tecto, Benlate, Bayton, Topsin and Derosal, were evaluated for their effect on seed germination and control of major seed-borne pathogens of sunflower. Two sunflower cultivars, HO-1 and NK-212, naturally infected with important seed-borne fungi were treated with these fungicides at 1.5, 2.0, 2.5, 3.0 g/kg. All the fungicides under study controlled the seed-borne fungi and increased the germination of sunflower seed to various levels. Tecto and Benlate in both cultivars gave better performance in reducing the fungal population and increasing seed germination. Topsin and Derosal also reduced the fungal population at higher dosage but there was no considerable improvement in germination. The use of fungicides at 2.5 g/kg provided almost complete elimination of fungi and 8-10 percent increase in seed germination as compared to the use of fungicides at 2 g/kg.

Effects of seed-gall nematode, Anguina tritici, on bread wheat grain characteristics and yields in Turkey

Nematology ◽  
2015 ◽  
Vol 17 (9) ◽  
pp. 1099-1104 ◽  
Author(s):  
Adnan Tulek ◽  
Ilker Kepenekci ◽  
Tugba Hilal Cifticigil ◽  
Irfan Ozturk ◽  
Kemal Akin ◽  
...  
Keyword(s):  
Bread Wheat ◽  
Agricultural Research ◽  
Seed Infection ◽  
Yield Losses ◽  
Wheat Grain ◽  
Agricultural Research Institute ◽  
Growing Seasons ◽  
Significant Yield ◽  
Research Institute

The effects of Anguina tritici on wheat yields and agronomic components were investigated at Thrace Agricultural Research Institute, Turkey, during the 2013 and 2014 growing seasons. Evaluations during 2013 focused on the wheat cv. Pehlivan, which is widely cultivated in Turkey. In this cultivar, A. tritici led to a grain infection in infected spikes of 0-100%, with an average of 61.8%. In 2014, yield losses caused by A. tritici were investigated in four wheat cvs, Pehlivan, Selimiye, Gelibolu and Kate-A. Results indicated that there were significant yield losses averaging 55% in plots infested with A. tritici (average yields = 3.74 t ha−1), as compared to control plots (average yields = 8.38 t ha−1). Yield losses in the four wheat cvs Kate-A, Pehlivan, Selimiye and Gelibolu were estimated as 51.3, 53.2, 56.6 and 59.6%, respectively, with seed infection levels by A. tritici of 21.4, 20.9, 24.4 and 18.3%, respectively.

scholarly journals Bioefficacy of entomopathogenic mycoformulations and effect of adjuvants against nymphs of cabbage aphid, Brevicornye brassicae (Linnaeus)

2021 ◽  
Vol 13 (2) ◽  
pp. 530-536
Author(s):  
Karuna Thakur ◽  
Neelam Joshi ◽  
Sudhendu Sharma
Keyword(s):  
Pest Management ◽  
Chemical Control ◽  
Insect Pests ◽  
Management Program ◽  
Environmentally Benign ◽  
Laboratory Studies ◽  
Percent Reduction ◽  
Cabbage Aphid ◽  
Percent Increase ◽  
Cent Mortality

Cabbage aphid, Brevicornye brassicae (Linnaeus) is one of the major insect pests of cabbage. Chemical control is mostly used to manage this pest. The present investigation was conducted to evaluate an environmentally benign approach for the pest management through different entomopathogenic mycoformulations against nymphs of B. brassicae to identify effective mycoformulation. The effect of mycoformulations supplemented with different adjuvants against nymphs of B. Brassicae was also evaluated under laboratory conditions. The bioassay studies of fungal bioformulation against nymphs of B. brassicae recorded maximum cumulative per cent mortality (53.33%) in talc formulation of L. lecanii MTCC 956 and commercial L. Lecanii formulation @12g L-1 and these were at par with each other. Maximum percent reduction of nymphal population over control 54.66 and 51.33 per cent was recorded @12 g L-1in talc formulation of L. lecanii (MTCC 956) and commercial L. Lecanii formulation ten days after treatment respectively. Laboratory studies undertaken to evaluate talc formulation of L. lecanii MTCC 956 lecanii with and without adjuvants against the nymphs of B. brassicae recorded maximum percent increase in mortality over control (7.89%) in L. lecanii formulation + tween80@1%. Results of this study signified that L. lecanii formulation, when supplemented with adjuvants enhanced the growth of L. lecanii and increased mortality of nymphs of B. brassicae and could be used as a part of the integrated pest management program.

scholarly journals NEW WAY OF CONTROLLING Oryctes monoceros (COLEOPTERA, DYNASTIDAE), A COCONUT PEST IN GHANA

CORD ◽  
2004 ◽  
Vol 20 (01) ◽  
pp. 34
Author(s):  
René Philippe ◽  
S.K. Dery
Keyword(s):  
West Africa ◽  
Oil Palm ◽  
Cover Crop ◽  
Chemical Control ◽  
Low Level ◽  
Physical Control ◽  
Frequent Monitoring ◽  
Lambda Cyhalothrin ◽  
Highly Effective

  Oryctes monoceros is one of the most dangerous pests in young coconut and oil palm plantings throughout West Africa. This species is controlled using different methods that can be applied in combination as part of IPM. The first naturally involves eliminating all larva sites, consisting of dead or felled coconut or oil palm stems. Rapidly covering felled stems with a cover crop can keep the populations of this pest down to a very low level. When adults attack, frequent monitoring of young plantings is recommended, as is the removal of adults from their galleries using a metal mini-harpoon. Chemical control with Lambda-Cyhalothrin reduces damage to seedlings, particularly as that product has good repellent properties. It remains effective for around a month. Physical control has been developed, using old fishing nets rolled into balls and inserted in the axils of young fronds. This method is highly effective, cheaper than other types of control, does not pollute and is not toxic for handlers. Adults trapped by the rolled up fishing nets, which eventually die, attract other adults that are trapped in turn, thereby increasing the efficiency of the method.

Comparative efficacies of insecticides and botanicals against rice gall midge, Orseolia oryzae (Wood-Mason) and their effect on the parasitoid Platygaster oryzae in rice ecosystem of Odisha, India

ENTOMON ◽  
2021 ◽  
Vol 46 (3) ◽  
pp. 263-268
Author(s):  
Atanu Seni ◽  
Rini Pal
Keyword(s):  
Field Experiment ◽  
Grain Yield ◽  
Gall Midge ◽  
Botanical Insecticides ◽  
Comparative Efficacy ◽  
Orseolia Oryzae ◽  
Lambda Cyhalothrin ◽  
Rice Gall Midge ◽  
Rice Ecosystem

A field experiment was carried out to determine the comparative efficacy of newer insecticides with botanical insecticides, viz., Chlorantraniliprole 0.4G @ 10 kg ha-1, Fipronil 5 SC @ 1500 ml ha-1, Acephate 95 SG @ 750 g ha-1, Lambda cyhalothrin 4.9 CS @ 550 ml ha-1, Thiamethoxam 25 WG @ 150 g ha-1 @ Carbofuran 3 CG @ 30 kg ha-1, Carbosulfan 25 EC @ 875 ml ha-1, Cedarwood oil @ 1000 ml ha-1, Azadirachtin 0.03 EC @ 2500 ml ha-1, applied at 20 and 35 DAT, against rice gall midge, Orseolia oryzae (Wood-Mason) in rice during kharif, 2019 and 2020. All the treatments were effective for gall midge. Lambda cyhalothrin 4.9 CS @ 550 ml ha-1 was significantly superior (>80% reduction over control) for gall midge management and grain yield was 4.75 t ha-1. Both botanical and untreated plots had more number of parasitized gall midge (40- 53.3%) than other chemical treated plots.

Efficacy of new molecules of insecticides against white fly Bemisia tabaci (Gennadius) and aphid Aphis craccivora (Koch) in Urdbean (Vigna mungo L.)

2017 ◽  
Vol 51 (05) ◽  
Author(s):  
Indrajeet Singh Rajawat ◽  
M. A. Alam ◽  
Akhilesh Kumar ◽  
R. K. Tiwari ◽  
Sachin Kumar Jaiswal
Keyword(s):  
Field Experiment ◽  
Bemisia Tabaci ◽  
Vigna Mungo ◽  
Aphis Craccivora ◽  
Emamectin Benzoate ◽  
Kharif Season ◽  
Aphis Craccivora Koch

Field experiment were carried out during Kharif season 2016-17 to evaluate the efficacy of Flubendiamide 24 % + Thiacloprid 24% SC 200 ml/ha, Flubendiamide 39.35% SC 125 ml/ha, Thiacloprid 21.7% SC 250 ml/ha, Chlorantraniliprole18.5% SC 160 ml/ha, Flubendiamide 24 % + Thiacloprid 24% SC 250 ml/ha, Quinalphos 25% EC 1500 ml/ha, Thiomethoxam 25% WG 125 g/ha and Emamectin benzoate 5% SG 220 g/ha against the Bemisia tabaci and Aphis craccivora. Thiacloprid 21.7% SC was found significantly most effective against white fly followed by Thiomethoxam 25% WG. While, Thiomethoxam 25% WG was found significantly most effective against aphid followed by Thiacloprid 21.7% SC whereas, Flubendiamide 39.35% SC was the least effective against both the pest.

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