scholarly journals EVALUATION OF FOUR INTEGRATED PEST MANAGEMENT PACKAGES FOR CONTROLLING MAIN PESTS OF COTTON IN RAINFED FIELDS

2014 ◽  
Vol 15 (1) ◽  
pp. 1
Author(s):  
Nurindah Nurindah ◽  
Dwi Adi Sunarto

Cotton production nationally is low due to various constraints, including pests. Two main pests commonly found in cotton plantation in rain fed fields are cotton leafhopper (Amrasca biguttula) and cotton bollworm (Helicoverpa armigera). The study aimed to evaluate four packages of integrated pest management (IPM) techniques to control cotton leafhopper and cotton bollworm in rain fed fields. The experiment was conducted in farmers’ fields at Asembagus, East Java, between January and July 2012. Four packages of IPM evaluated were cotton varieties, i.e. Kanesia 10 or Kanesia 13, and seed treatment with synthetic insecticide (imidacloprid) before sowing or spraying molasses (10 ml L-1 water) as food for natural enemies. The cotton plants were intercropped with groundnut and sprayed with neem seed extract (NSE) at the action threshold level for pest control. These packages were compared among themselves and also with the methods usually used by farmers, i.e. planting cotton variety Kanesia 8 intercropped with groundnut and pest control using synthetic chemical insecticides. Twenty five plants were sampled randomly per plot and measured for their growth, leafhopper and  bollworm populations, as well as cotton seed yield per plot. Observations were made weekly, starting at 30 days after planting (DAP) until 120 DAP. The results showed that the use of Kanesia 10 or Kanesia 13 intercropped with groundnut and spraying molasses to conserve natural enemies was the best  pest management practice and superior to farmers’ practices. Conserving natural enemies is not only profitable (saving production cost of IDR1,150,000 to IDR1,500,000 ha-1 season-1), but also safe for the environment (no need to spray chemical insecticides).

2014 ◽  
Vol 15 (1) ◽  
pp. 1
Author(s):  
Nurindah Nurindah ◽  
Dwi Adi Sunarto

Cotton production nationally is low due to various constraints, including pests. Two main pests commonly found in cotton plantation in rain fed fields are cotton leafhopper (Amrasca biguttula) and cotton bollworm (Helicoverpa armigera). The study aimed to evaluate four packages of integrated pest management (IPM) techniques to control cotton leafhopper and cotton bollworm in rain fed fields. The experiment was conducted in farmers’ fields at Asembagus, East Java, between January and July 2012. Four packages of IPM evaluated were cotton varieties, i.e. Kanesia 10 or Kanesia 13, and seed treatment with synthetic insecticide (imidacloprid) before sowing or spraying molasses (10 ml L-1 water) as food for natural enemies. The cotton plants were intercropped with groundnut and sprayed with neem seed extract (NSE) at the action threshold level for pest control. These packages were compared among themselves and also with the methods usually used by farmers, i.e. planting cotton variety Kanesia 8 intercropped with groundnut and pest control using synthetic chemical insecticides. Twenty five plants were sampled randomly per plot and measured for their growth, leafhopper and  bollworm populations, as well as cotton seed yield per plot. Observations were made weekly, starting at 30 days after planting (DAP) until 120 DAP. The results showed that the use of Kanesia 10 or Kanesia 13 intercropped with groundnut and spraying molasses to conserve natural enemies was the best  pest management practice and superior to farmers’ practices. Conserving natural enemies is not only profitable (saving production cost of IDR1,150,000 to IDR1,500,000 ha-1 season-1), but also safe for the environment (no need to spray chemical insecticides).


2020 ◽  
Vol 14 (2) ◽  
pp. 72
Author(s):  
NURINDAH NURINDAH ◽  
DWI ADI SUNARTO

ABSTRAK<br />Helicoverpa armigera adalah salah satu hama utama pada kapas,<br />sehingga perlu dikendalikan. Konsep ambang kendali sebagai salah satu<br />komponen dalam PHT telah dikembangkan untuk H. armigera, namun<br />hanya berdasarkan populasi hama dan belum mempertimbangkan<br />keberadaan musuh alami. Penelitian ini bertujuan untuk menguji ambang<br />kendali H. armigera dengan mempertimbangkan keberadaan musuh alami<br />pada skala luas di daerah pengembangan dengan menggunakan lahan<br />petani. Penelitian ini dilakukan pada pertanaman kapas tumpangsari<br />dengan kedelai yang ditanam sesudah padi di Kecamatan Mantup dan<br />Kembangbau, Lamongan, Jawa Timur pada Maret-Oktober 2005. Lahan<br />yang digunakan seluas 15 hektar, di bawah pengelolaan 36 petani.<br />Pengujian ambang kendali H. armigera dilakukan dengan menerapkan dua<br />perlakuan konsep ambang kendali yang merupakan bagian dari PHT<br />kapas, yaitu: (1) AKH: 4 tanaman terinfestasi/25 tanaman contoh; dan (2)<br />AKH+MA: 4 tanaman terinfestasi/25 tanaman contoh; jumlah tanaman<br />yang terinfestasi yang teramati dikurangi 1 jika ditemukan 8 ekor predator<br />dan kelipatannya. Jika populasi pada petak perlakuan mencapai ambang<br />kendali, dilakukan penyemprotan dengan Ekstrak Biji Mimba (EBM).<br />Setiap lahan petani dibagi dua, setiap bagian menerapkan satu perlakuan<br />(n=36). Pengamatan dilakukan pada 25 unit pengamatan per 1,0 ha yang<br />diambil secara W sampling, setiap 7 hari sejak 50 hari setelah tanam (hst)<br />hingga 90 hst. Satu unit pengamatan adalah 1 m 2 . Parameter yang diamati<br />secara periodik adalah populasi H. armigera (telur dan larva); kerusakan<br />buah, hasil kapas berbiji, serta penggunaan saprodi dan tenaga kerja untuk<br />pengendalian hama. Data yang diperoleh dianalisa dengan menggunakan<br />uji t. Hasil penelitian menunjukkan bahwa populasi H. armigera pada<br />kapas + kedelai dapat ditekan oleh musuh alaminya, khususnya kompleks<br />predator yang terdiri atas laba-laba, kumbang kubah dan kepik mirid.<br />Populasi kompleks predator dapat mencapai 40-80 ekor/25 tanaman.<br />Dengan demikian, penerapan ambang kendali H. armigera pada kapas +<br />kedelai dengan memperhitungkan keberadaan predator menyebabkan tidak<br />perlu dilakukannya penyemprotan insektisida sama sekali, sehingga<br />terdapat keuntungan ekonomis, yaitu penghematan biaya saprodi sebesar<br />Rp 259.000 per hektar dan keuntungan ekologis, yaitu tidak tercemarnya<br />lingkungan oleh senyawa toksik.<br />Kata kunci : Kapas, Gossypium hirsutum L., ambang kendali, Helicoverpa<br />armigera, Jawa Timur<br />ABSTRACT<br />Action  threshold  for  Helicoverpa  armigera  by<br />considering the presence of predators on cotton<br />Helicoverpa armigera on cotton was considered as the main pest,<br />therefore it always be a focus of pest control. Action threshold concept as<br />an IPM component had been developed for H. armigera on cotton;<br />however it has not considered the presence of natural enemies. The<br />objective of this research is to test the action threshold of H. armigera by<br />considering the presence of natural enemies on cotton intercropped with<br />soybean in farmers’ fields. The test involved 15 hectares of farmers’<br />fields (involving 36 farmers) in Lamongan, East Java in March-October<br />2005. The action thresholds for H. armigera tested were: (1) AKH: 4<br />infested plants/25 sample plants; and (2) AKH+MA: 4 infested plants/25<br />sample plants, and the number of infested plants observed was subtracted<br />by 1 when 8 predators, and it’s folded up, were found in the sample plants.<br />Spray of neem seed extract (NSE) was applied when the pest population<br />reached action threshold level. Each farmer field was divided into two<br />parts to accommodate the treatments. The observations were made<br />periodically on 25 units per 1,0 hectare in 7-days interval on 50 – 90 days<br />after planting (dap). The size of observation unit was 1 m 2 . Parameters<br />observed included H. armigera population (egg and larva); damage bolls,<br />seed cotton production and the cost of pest control. Data were analysed by<br />using t-test. The results showed that H. armigera population on cotton<br />intercropped with soybean could be repress by its natural enemies,<br />especially by the complex predator (consisted of spiders, lady bird beetles<br />and predatory mirid bugs) to be always under action threshold level. The<br />application of action threshold by considering the presence of predator in<br />cotton + soybean fields would lead to unsprayed cultivation. Resulted<br />economical benefit by saving of the production cost Rp 259.000 per<br />hectare as well as ecological advantage by avoiding of sprays of toxic<br />materials in the environment.<br />Key words : Cotton,  Gossypium  hirsutum  L.,  action  threshold,<br />Helicoverpa armigera, East Java


Insects ◽  
2021 ◽  
Vol 12 (1) ◽  
pp. 74
Author(s):  
Xiao-wei Li ◽  
Xin-xin Lu ◽  
Zhi-jun Zhang ◽  
Jun Huang ◽  
Jin-ming Zhang ◽  
...  

Intercropping of aromatic plants provides an environmentally benign route to reducing pest damage in agroecosystems. However, the effect of intercropping on natural enemies, another element which may be vital to the success of an integrated pest management approach, varies in different intercropping systems. Rosemary, Rosmarinus officinalis L. (Lamiaceae), has been reported to be repellent to many insect species. In this study, the impact of sweet pepper/rosemary intercropping on pest population suppression was evaluated under greenhouse conditions and the effect of rosemary intercropping on natural enemy population dynamics was investigated. The results showed that intercropping rosemary with sweet pepper significantly reduced the population densities of three major pest species on sweet pepper, Frankliniella intonsa, Myzus persicae, and Bemisia tabaci, but did not affect the population densities of their natural enemies, the predatory bug, Orius sauteri, or parasitoid, Encarsia formosa. Significant pest population suppression with no adverse effect on released natural enemy populations in the sweet pepper/rosemary intercropping system suggests this could be an approach for integrated pest management of greenhouse-cultivated sweet pepper. Our results highlight the potential of the integration of alternative pest control strategies to optimize sustainable pest control.


2005 ◽  
Vol 35 (1) ◽  
pp. 204-208 ◽  
Author(s):  
Moacyr Mascarenhas Motta Miranda ◽  
Marcelo Coutinho Picanço ◽  
José Cola Zanuncio ◽  
Leandro Bacci ◽  
Ézio Marques da Silva

The objective of this work was to evaluate the impact of integrated pest management (IPM) in the productivity of the tomato and in the populations of leafminers, fruit borers, and natural enemies in tomato crops. The treatments were calendar (spraying twice weekly with insecticides and fungicides), IPM (spraying when action thresholds were achieved), and control (no pesticide was applied). IPM was the most efficient system of pest control due to presenting similar productivity and 65.6% less pesticide applications than in the calendar. The attack of Tuta absoluta (Meyrick) (Lepidoptera: Gelechiidae) and Liriomyza spp. (Diptera: Agromyzidae) to the leaves only achieved the action threshold in the final phase of the cultivation. The main fruit borer was Neoleucinoides elegantalis (Guen.) (Lepidoptera: Crambidae), followed by T. absoluta and Spodoptera eridania (Cr.) (Lepidoptera: Noctuidae). The natural enemy populations were severely reduced by excessive pesticide applications. Predators were more abundant than parasitoids. The most abundant predators were Araneidae, Anthicus sp. (Coleoptera: Anthicidae), Cycloneda sanguinea larva (L.) (Coleoptera: Coccinellidae), Staphylinidae adults (Coleoptera), Orius sp. and Xylocoris sp. (Hemiptera: Anthocoridae), Formicidae (Hymenoptera), and Phlaeothripidae (Thysanoptera). The most abundant parasitoids were Hymenoptera of the families Eulophidae, Braconidae (Bracon sp. and Chelonus sp.), Trichogrammatidae [Trichogramma pretiosum (Riley)] and Bethylidae (Goniozus nigrifemur Ashmead), besides Tachinidae (Diptera).


2018 ◽  
Vol 85 (0) ◽  
Author(s):  
Gabriella Aparecida Salis de Carvalho ◽  
Daniel Júnior Martins ◽  
Isadora Mileny Costa de Brito ◽  
Sebastião Lourenço de Assis Júnior ◽  
Marcus Alvarenga Soares ◽  
...  

ABSTRACT: The entomopathogen Bacillus thuringiensis (Bt) is widely used as one of the ingredients in pest control formulations, but researches conducted on its effect on non-target organisms are still in the nascent stage. This investigation aimed to uncover if Bt treated with Tenebrio molitor (Coleoptera: Tenebrionidae) larvae and pupae could affect the biological variables of Podisus nigrispinus (Hemiptera: Pentatomidae) and Palmistichus elaeisis (Hymenoptera: Eulophidae), all of which established natural enemies of leaf defoliator caterpillars in the eucalyptus culture. Larvae of T. molitor were fed on wheat bran containing different concentrations of B. thuringiensis (0.00; 0.25; 0.50; 1.00; 2.00 and 4.00 g Agree/kg bran). When the larvae attained size of about 2 cm, they were used as prey for P. nigrispinus (Bioassay I), and their pupae used as hosts for P. elaeisis (Bioassay II). Only the biological variables oviposition period and egg numbers by posture of the predator P. nigrispinus were altered. The biological variables of P. elaeisis were not altered, since it was possible to use these control methods within the integrated pest management.


2017 ◽  
Vol 2017 ◽  
pp. 1-12 ◽  
Author(s):  
Xia Wang ◽  
Yuan Tian ◽  
Sanyi Tang

Resource limitations and density dependent releasing of natural enemies during the pest control and integrated pest management will undoubtedly result in nonlinear impulsive control. In order to investigate the effects of those nonlinear control strategies on the successful pest control, we have proposed a pest-natural enemy system concerning integrated pest management with density dependent instant killing rate and releasing rate. In particular, the releasing rate depicts how the number of natural enemy populations released was guided by their current density at the fixed moment. The threshold condition which ensures the existence and global stability of pest-free periodic solution has been discussed first, and the effects of key parameters on the threshold condition reveal that reducing the pulse period does not always benefit pest control; that is, frequent releasing of natural enemies may not be beneficial to the eradication of pests when the density dependent releasing method has been implemented. Moreover, the forward and backward bifurcations could occur once the pest-free periodic solution becomes unstable, and the system could exist with very complex dynamics. All those results confirm that the control actions should be carefully designed once the nonlinear impulsive control measures have been taken for pest management.


2016 ◽  
Vol 6 (1) ◽  
pp. 42 ◽  
Author(s):  
Dwi Adi Sunarto ◽  
Nurindah Nurindah

Natural Enemies Conservation: The Role of Neem-seed Extracts for Natural Enemies Conservation Used of Cotton Insect Pest Control. Insects associated with cotton plant are numerous, as the plant bears extrafloral nectar. More than 90 species of natural enemies are reported and identified. They could manage the cotton pest, keeping the pest population is under action threshold level when their presence is considered in scouting and action threshold concept. However, most of cotton farmers are insecticide-spray-minded people who think that insecticide sprays is a must in cotton cultivation. This behavior is unfavorable for the natural enemies in building their population so they can act as an effective mortality factor for the pest. Neem seed extract (NSE) is toxic to herbivores but relatively safe for natural enemies, so that it could be used as a substitute for synthetic chemical insecticides. Therefore, NSE is recommended to be used for conserving natural enemies in cotton agro ecosystem.


2016 ◽  
Vol 3 (1) ◽  
pp. 38
Author(s):  
Dwi Adi Sunarto ◽  
Anastasia Siti Murdiyati ◽  
. Nurindah

<p>Penerapan komponen teknologi pengendalian hama ramah lingkungan dilaksanakan di daerah pengembang-an kapas di Kecamatan Jati, Kabupaten Blora, Jawa Tengah di lahan petani seluas ± 5 hektar yang dimiliki oleh 20 petani pada bulan Maret sampai dengan Oktober 2009. Komponen teknologi pengendalian hama ra-mah lingkungan diharapkan menjadi solusi yang tepat untuk mengatasi masalah serangga hama pada tanam-an kapas dan dapat diterima oleh petani. Pengendalian serangga hama kapas yang diterapkan adalah pengen-dalian serangga hama ramah lingkungan dengan komponen pengendalian yang terdiri atas seed treatment dengan insektisida imidakloprit dan penyemprotan insektisida botani ekstrak biji mimba berdasarkan ambang kendali yang mempertimbangkan keberadaan musuh alami dibandingkan dengan pengendalian serangga ha-ma konvensional (pengendalian hama menggunakan insektisida kimiawi sintetis seperti yang biasa diterap-kan oleh petani). Hasil penelitian menunjukkan bahwa penerapan komponen teknologi pengendalian hama ra-mah lingkungan yang terdiri atas seed treatment, insektisida botani ekstrak biji mimba, dan ambang kendali dengan mempertimbangkan keberadaan musuh alami, terbukti dapat menekan populasi serangga hama ka-pas selalu di bawah batas ambang kendali dan tidak berbeda dengan pengendalian hama secara konvensio-nal. Pengendalian hama ramah lingkungan lebih aman terhadap musuh alami dengan pendapatan usaha tani kapas Rp621.250,00 lebih tinggi dibanding pengendalian hama secara konvensional. Teknologi pengendalian hama ramah lingkungan dapat diterima oleh petani, kecuali teknologi ambang kendali yang secara konsep da-pat diterima, tetapi petani masih enggan untuk melaksanakannya.</p><p> </p><p>Application of environmentally friendly pest control technology is expected to be the best solution to over-come insect pest problem on cotton crops and can be accepted by farmers. The research was conducted in the area of cotton development in Jati District, Blora Regency, Central Java on farmers' land area of 5 hectares owned by 20 farmers from March to October 2009. The applied treatments were: application of environmen-tally friendly pest insect control components, ie: seed treatment and botanical neem seed extracts insecticide sprayed based on an action threshold that considers the presence of natural enemies took in to account, compared with conventional pest control (pest control using synthetic chemical insecticides commonly used by the cotton farmers). The results showed that the application of environmentally friendly pest control tech-nology suppressed cotton insect pest population with no negative effect on natural enemies, and retained seed cotton production, increased the income of cotton farming as much as Rp621.250,00. Components of en-vironmentally friendly pest control technology can be accepted by cotton farmers, including the action thres-hold concept. However, the farmers were mind to implement the action threshold as it is too complicated for them.</p>


2020 ◽  
Vol 2020 (1) ◽  
Author(s):  
Changtong Li ◽  
Sanyi Tang ◽  
Robert A. Cheke

Abstract An expectation for optimal integrated pest management is that the instantaneous numbers of natural enemies released should depend on the densities of both pest and natural enemy in the field. For this, a generalised predator–prey model with nonlinear impulsive control tactics is proposed and its dynamics is investigated. The threshold conditions for the global stability of the pest-free periodic solution are obtained based on the Floquet theorem and analytic methods. Also, the sufficient conditions for permanence are given. Additionally, the problem of finding a nontrivial periodic solution is confirmed by showing the existence of a nontrivial fixed point of the model’s stroboscopic map determined by a time snapshot equal to the common impulsive period. In order to address the effects of nonlinear pulse control on the dynamics and success of pest control, a predator–prey model incorporating the Holling type II functional response function as an example is investigated. Finally, numerical simulations show that the proposed model has very complex dynamical behaviour, including period-doubling bifurcation, chaotic solutions, chaos crisis, period-halving bifurcations and periodic windows. Moreover, there exists an interesting phenomenon whereby period-doubling bifurcation and period-halving bifurcation always coexist when nonlinear impulsive controls are adopted, which makes the dynamical behaviour of the model more complicated, resulting in difficulties when designing successful pest control strategies.


Author(s):  
A. A. Oso ◽  
G. O. Awe

Aim: Information on the influence of water availability during different seasons of rainfed or irrigated agriculture as it relates to insect pest population build-up in crops could assist in the development of integrated pest management. A study was therefore conducted to investigate effects of spacing, pest infestation and control on cucumber under rainfed and irrigated conditions. Place and Duration of Study: At the Teaching and Research Farm, Ekiti State University, Ado Ekiti, Nigeria during the 2016/2017 rainy and dry seasons. Methodology: The experiment was laid out using randomized complete block design (RCBD) in a split-plot arrangement in five replications, with spacing (60 x 60 cm, 60 x 90 cm and 60 x 120 cm) as the main plot treatments and the sub-plot treatments were different pest control strategies. The pest control strategies include synthetic insecticide (Lambda-cyhalothrin), botanical insecticide (Anogeissus leiocarpus) and control. Growth parameters and yield attributes were recorded. Insect pest occurrence, their build-up and percentage infestation on cucumber and the efficacy of the management strategies were monitored. Results: The results showed that yield was enhanced in irrigated system with the widest spacing of 60 x 120 cm botanical treatment interaction. Bemisia tabaci was the most prominent insect pest attacking cucumber under irrigated system. Conclusion: Other cultural control practices such as the use of trap crops with little or no financial implication should also be added to botanical pesticides as an integrated pest management tactic for effective management and control of the pest.


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