Influence of Different Plant Powders as Grain Protectants on Sitophilus oryzae (L.) (Coleoptera: Curculionidae) in Stored Wheat

2020 ◽  
Vol 83 (12) ◽  
pp. 2167-2172
Author(s):  
VASU MEHTA ◽  
SURJEET KUMAR

ABSTRACT Sitophilus oryzae (L.) is the most widespread and destructive insect of stored wheat throughout the world. The main aim of the study was to find ecofriendly alternatives to chemical fumigants and synthetic insecticides for the control of weevils in stored wheat. The leaf powder of Ageratum conyzoides proved to be the best treatment against the weevil that resulted in maximum mean cumulative mortality (96.67%), the lowest monthly population increase (18.33), and the least grain damage (12.61%) and weight loss (1.75%) during 6 months of storage. The next best treatments were the drupe powder of Melia azedarach, followed by Vitex negundo and Ocimum sanctum. A. conyzoides, Melia azedarach, and O. sanctum were found effective even 3 months after preparation. The leaf powder of Murraya koenigii resulted into the lowest mean cumulative adult mortality (14.23%), the highest monthly population increase (132.78), and the highest grain damage (47.50%) and weight loss (11.07%), thus proving to be the least effective. HIGHLIGHTS

2017 ◽  
Vol 9 (2) ◽  
pp. 736-743
Author(s):  
Usha Yadav ◽  
Ruchira Tiwari

he laboratory experiments were conducted to study the efficacy of some indigenous products such as plant products (chopped neem leaves ajwain seed powder, garlic capsules, saw dust), animal derivedproducts ( cow dung cake powder, cow urine) and inert materials ( ash powder, sand, talcum powder, salt) @ 2g/100g of wheat grains against rice weevil, Sitophilus oryzae (Linn.) and lesser grain borer, Rhyzoper thadominica (Fab.) on stored wheat by undertaking various parameters viz., percent adult emergence, percent seed damage, per cent weight loss and per cent germination after six months of storage during April to October 2015. After 180 days of treatments, the minimum number of adults weevils of S. oryzae( 4.00, 6.00,7.67, 9.00, 9.67 and 10.33) were emerged in wheat grains treated with ash powder, sand, cow dung powder, talcum powder, ajwain seed powder and neem leaf powder, respectively with minimum grain damage (7.33 %, 8.67 %,11.67 % and 12.00 %) was observed on ash powder, sand, ajwain seed powder and talcum powder, respectively, whereas minimum weight loss (2.67 %, 3.67 %, 5.67 % and 6.67 %) was recorded on ash powder, sand, cow dung powder, talcum powder and ajwain seed powder, respectively. Similarly, the minimum number of adult beetles of R. dominica were emerged (2.00,2.33, 6.67,7.00 and 8.33) in ash power, sand, talcum powder, cow dung cake powder and ajwain seed powder, respectively with minimum grain damage (4.00 %,8.00 %. 8.67 % and 12.67 % and weight loss (1.33 %, 4.00 %, 7.33 % and 11.67 %) in sand, ash powder, talcum powder and cow dung cake treated wheat grains, respectively. It has been clearly observed that seed germination was not affected adversely in any treatment during six months of storage. The present study clearly revealed that these naturally occurring indigenous products could be used to manage the storage insect pests in wheat.


2016 ◽  
Vol 8 (2) ◽  
pp. 910-918
Author(s):  
B. L. Meena ◽  
K. L. Jeengar ◽  
Bhim Singh ◽  
N. L. Meena

The present study was aimed to develop the eco-friendly and economic approaches to keep the stored food grains free from insect attack would be using the plant products as grain protectants. In the context of biological control as an alternative to chemical control, under laboratory conditions, different plant powders viz., dharakkernel and leaf (Melia azadirach L.), neem kernel and leaf (Azadirachta indica Adr. Juss), karanj kernel (Pongamia glabra), aak leaf (Calotropis procera Br.), datura leaf (Datura alba Nees.), citrus leaf (Citrus lemon L.), podina leaf (Mentha arvensis) and tulsi leaf (Ocimum sanctum L.) were compared, at three rate of application (1.0, 2.5 and 5.0 g per 100 g seeds), as protectants against infestation of sorghum (Sorghum bicolor (L.) Moench) seeds by the storage pest Corcyra cephalonica Stainton. The larval period of test insect got progressively increased with the increase in dose level of different plant powders. The maximum (77.83%) and minimum (37.83%) reduction in adult emergence was observed in dharak kernel powder and tulsi leaf powder, respectively. The test insect developed on seeds treated with dharak kernel powder laid significantly (P˃ 0.5) minimum number of eggs (80.33 eggs/ female) followed by neem kernel powder (85.66 eggs/female). The dharak and neem kernel powders were found most effective in reducing the longevity of male (3.96 and 5.13 days) and female adults (4.63 and 4.97 days), respectively. The results suggest that these materials tested have the potential in the development of post-harvest protection technology against, C. cephalonica, the major pest of stored grains.


Insects ◽  
2019 ◽  
Vol 10 (2) ◽  
pp. 50 ◽  
Author(s):  
Frank H. Arthur

Wheat, corn, and brown rice were treated with different combinations of a deltamethrin suspension concentrate (SC) formulation and a new emulsifiable concentrate (EC) formulation, at rates of either 0.5 or 1.0 ppm alone or in combination with 1.25 and 2.5 ppm methoprene (10 treatments in all, including an untreated control). Treated commodities were stored at ambient conditions on the floor of an empty grain bin in Manhattan, KS, USA, in 5-kg lots for individual replicates. The commodities were sampled and bio-assayed every three months for 15 months by exposing 10 mixed-sex parental adults of selected adult stored product insects on 70–80 g of the commodity. For all treatments, there was no regression of declining efficacy with respect to the month. Therefore, the data were combined for analysis. On wheat and brown rice, there was no reproduction of Rhyzopertha dominica (Fabricius) in any of the treatments, and there was no weight loss in either commodity that was caused by feeding of the parental adults or developing progeny. There was reproduction of Sitophilus oryzae (L.) on wheat but, for several combinations, the EC formulation gave better suppression of progeny compared to the standard SC. However, on brown rice, only the combination of 1.0 ppm deltamethrin EC and 2.5 ppm methoprene was different than other treatments with respect to progeny development, sample weight loss caused by feeding, and weight of the feeding damage itself. Progeny production was correlated with grain damage. No progeny of Tribolium castaneum (Herbst) developed on the treated corn, but there was some variation in insect damage, with less damage in those treatments involving the EC formulation. Progeny production of Sitophilus zeamais (Motschulsky) was at the lowest in the combination of 1.0 ppm deltamethrin EC and 2.5 ppm methoprene. The resulting insect damage was the lowest in this combination as well. Results of this study were used by the registrant (Central Life Sciences) in the United States (US) to modify the commercial formulation to replace the deltamethrin SC with the EC, at label rates of either 0.5 ppm EC+ 1.25 ppm methoprene, or 1.0 ppm EC + 2.5 ppm methoprene, on wheat, corn, and rice.


2015 ◽  
Vol 60 (4) ◽  
pp. 455-463 ◽  
Author(s):  
Abdulrasak Musa ◽  
Samuel Adewale

The aim of this study was to examine the insecticidal activities of powders of bitter leaf, cashew leaf, orange peel and pawpaw leaf against Callosobruchus maculatus (F.) (Coleoptera: Bruchidae). These were tested at 2.5%, 5.0% and 7.5% (w/w) for their insecticidal activities against the insect. Results showed that the ovicidal and adulticidal activities of the plant powders depended on dosages and exposure time. Mortalities of 16.28% and 18.75% were observed in bitter leaf powder applied at 7.5% (w/w) dosage within 24 and 48 hours post infestation (HPI), respectively. In grains treated with 7.5% orange peel powder, 12.50% and 16.28% mortalities were observed within 24 and 48 HPI, respectively. Each of bitter leaf and orange peel powders was significantly different (p<0.05) in causing adult mortality at the highest dosage compared with the control. Oviposition was inhibited at the highest dosage of the plant powders, but the percentage of oviposition in the lower dosages was three-fold lower than the control. The plant powders also significantly reduced progeny emergence and grain damaged by the beetle. No beetle emergence was recorded in grains treated with bitter leaf powder at 27 DPI. Adult beetles in grains treated with cashew and pawpaw leaf powders caused grain damage of 46.3-54.7% and 44.7-60.7%, respectively during the study period. There was a noteworthy decrease in insecticidal effects of the plant powders as indicated: bitter leaf > orange peel > cashew leaf > pawpaw leaf. It is recommended that incorporating these plant parts in pest management of stored products will guarantee user safety, reduce environmental pollution and suppress insect infestation.


2020 ◽  
Vol 2 (1) ◽  
pp. p184
Author(s):  
Md. Israfil Jahan ◽  
Masum Ahmad ◽  
Md. Sohanur Rahman ◽  
Fakhar Uddin Talukder

The pesticidal efficacy of four locally available leaves of botanicals like neem (Azadirachta indica), datura (Datura stramonium),  marigold (Tagetes erecta) and garlic (Allium sativum L.) tablet powders was assessed on pulse bettle (Callosobruchus chinensis L) through adult mortality and emergence, oviposition performance, seed damage, weight loss and germination  of chickpea (Cicer arietinum). The above test biopesticides were tested at three different rates (0.5 g, 1.0 g and 1.50 g powder/kg of chickpea seeds). All the tested powder showed significant effect on the above parameters. The highest adult mortality was recorded when chickpea seeds were treated with datura leaf powder at 1.50 g/kg, whereas marigold showed the least effect on adult mortality. The powders used in the experiment effectively controlled oviposition and adult emergence of pulse beetle. The lowest number of adult emergence was obtained from chickpea seeds treated with datura leaf powder at 1.50 g/kg. The highest weight loss was observed in control seeds followed by marigold leaf powder 0.5 g/kg gram seeds. Datura leaf powder treated seeds showed the lowest seed weight loss followed by neem, garlic and marigold. Plant powders had profound effect on seed germination. The highest germination was observed in treated seed with datura leaf powder at 1.50 g/kg and the lowest germination in control seed followed by marigold leaf powder at 1.5 g/kg treated seeds. The pesticidal effect on oviposition, adult mortality, adult emergence, and seed weight loss was directly proportional to leaf powder rates.


2021 ◽  
Vol 12 (6) ◽  
pp. 679-686
Author(s):  
Tumma Mounika ◽  
◽  
S. K. Sahoo ◽  
D. Chakraborty ◽  
◽  
...  

A study was carried out to evaluate the bio-efficacy of some botanicals against Callosobruchus chinensis L. in stored chickpea (Variety: Anuradha) in the year 2018–20. Different botanicals like Neem (Azadirachta indica), Melia (Melia azedarach), Datura (Datura stramonium) and Tulsi (Ocimum sanctum) were used. Among all the botanicals Neem leaf powder @ 6% performed better with minimum egg laying (64 eggs 5 females-1) compared to the other botanicals except the standard check with Deltamethrin @ 0.04%. Thereafter, 6% Melia leaf powder and 8% Datura leaf powder recorded 87.50 eggs 5 females-1 and 91.25 eggs 5 females-1, respectively. With regard to adult mortality, the best result was also obtained from the treatment Neem leaf powder @6% with 96.67% mortality in 5th day. Following the same trend, 6% Melia leaf powder and 8% Datura leaf powder exhibited 90% and 83.33% adult mortality, respectively, in 5th day. The estimation of total phenols and total antioxidants (IC-50) contents in Neem leaf powder (345.69 mg g-1 and 207.77 μg ml-1), Melia leaf powder (273.40 mg g-1 and 383.68 μg ml-1) and Datura Leaf Powder (213.62 mg g-1 and 405.77 μg ml-1) also confirms the findings of the bio-efficacy trial of the botanicals. Tulsi leaf powder @5% was least efficacious both in terms of egg laying by the females as well as adult mortality. These botanicals are locally available, economic, bio-degradable and safe to the environment. Therefore, they may be fitted in the Integrated Pest Management strategies against stored grain pests as seed protectants.


Author(s):  
Subash Singh ◽  
D.K. Sharma

Background: A number of storage pests viz., Rhyzopertha dominica (F.), rice weevil, Sitophilus oryzae (L.), granary weevil, Sitophilus granarius (L.) and Khapra beetle, Trogoderma granarium (Evert.) damage stored wheat. However, S. oryzae is considered a primary pest of stored wheat and has been reported to prefer soft textured wheat cultivars.Methods: The grains of three bread (soft textured) viz., HD2967, PDW314, PBW658 and three durum wheat (hard textured) cultivars viz., WHD943, PBW621, PDW291 were screened for feeding response by rice weevil, Sitophilus oryzae L. in the laboratory. Each cultivar seed was properly cleaned and disinfested before its use. A 100g seed sample of each cultivar was taken into the plastic jars. Of the pure culture, ten 1-2 week young one insects (1:1 sex ratio) were released into the jars each containing different cultivar grains. The jars were covered with white muslin as three separate storage sets, i.e., 30, 60 and 90 days after storage to record data observations. Result: Durum wheat cultivars being low in protein contents were comparatively less preferred for pest feeding and cultivar PDW291 was found highly resistant based on low insect emergence, grain damage and weight loss. The bread wheat cultivars due to high protein contents were highly preferred by the pest and cultivar HD2967 showed maximum preference. The biochemical properties like ash contents and crude fibres showed positive while crude fats and protein a negative correlation with the pest infestation. 


2015 ◽  
Vol 3 (2) ◽  
pp. 129 ◽  
Author(s):  
Kebebush Tesema ◽  
Henok Kurabachew ◽  
Teferra F. Tadesse

Callosobruchus chinensis is one of the major insect pest of chickpea and other stored legume which is known to cause significant yield loss both quantitatively and qualitatively. This investigation was done to study the efficacy of leaf powders of basil (Ocimu basilica L.) and neem (Azadirachta indica), cow dung ash and Malathion dust against bruchid on two chickpea varieties namely Desi (local) and Habru (improved Kabuli). Levels of infestation, weight loss, germination capacity (delete) and germination of the seeds were evaluated monthly up to six months. In the bruchid infested treatment (control), hundred seeds weight, seed germination decreased through time while levels of infestation and weight loss increased. All the tested locally available treatments (cow dung ash, leaf powder of neem and leaf powder of basil) were found to be effective in reducing the damage inflicted by bruchid compared to the control. Malathion dust was observed to be the most effective of all treatment in this study. However, looking in to the side effects of synthetic pesticides, we suggest that the locally available plant powders and cow dung ash which is cheap, ecologically friendly and non-hazardous to human health can play an important role in protection of chickpea during storage against invasion by bruchid. 


2014 ◽  
Vol 39 (1) ◽  
pp. 93-103
Author(s):  
MA Hossain ◽  
MAA Bachchu ◽  
KS Ahmed ◽  
MA Haque

The effectiveness of 17 indigenous plant powders as grain protectant were assessed against Callosobruchus chinensis (L.). The results indicated that among all the tested plant materials, tobacco leaf powder (TLP) had promising effects on inhibiting oviposition and reducing adult emergence, seed infestation, and weight loss by C. chinensis. Tobacco leaf powder offered complete protection of chickpea seeds applied at 20.0 g/kg seeds. Its lower doses exhibited efficacy in dose dependant manner. The lowest number of eggs (24.60), egg bearing seeds (23.40), adult emergence (23.20), seed infestation (8.28%), and weight loss (0.50%) were obtained from the TLP treated at 10.0 g/kg seeds, while the highest of these parameters were in untreated control. In the ovicidal test, TLP showed 100% inhibition at 20.0 g/kg seeds over control. The lowest number of adults (37.20) were emerged when larvae bearing seeds were treated with TLP at 20.0 g/kg seeds along with 59.39% retardation over the control and had no adverse effect on seed germination up to 3 months. DOI: http://dx.doi.org/10.3329/bjar.v39i1.20146 Bangladesh J. Agril. Res. 39(1): 93-103, March 2014


2018 ◽  
Vol 24 (1) ◽  
Author(s):  
MANOJ KUMAR TRIPATHI ◽  
DEO PRAKASH PATEL

A laboratory experiment was conducted to assess the efficacy of nine plant products namely neem, karanj, eucalyptus, lantana, custard apple, lemon grass and meetha neem using their leaf powder and turmeric and ginger using their rhizome powder against the rust red flour beetle. Tribolium castaneum in stored wheat. Among the different treatments of plant products were evaluated by treating 100 g of wheat grains with 2% of grain weight against T. castaneum up to 30 days. The grains treated with eucalyptus leaf powder were found to be most effective and 27.25% adult mortality and 0.09% weight loss was observed. The least effective treatment was custard apple leaf powder with 7.78 % mortality and lantana leaf powder where 0.37% weight loss was recorded.


Sign in / Sign up

Export Citation Format

Share Document