scholarly journals Effect of biopesticides against stem borer (Lophobaris piperis) and Thrips sp. on pepper (Piper nigrum)

2021 ◽  
Vol 306 ◽  
pp. 01022
Author(s):  
Agus Kardinan ◽  
Paramita Maris

One of the pepper crop production obstacles is the presence of pests. Several pests that often attack pepper plants in the Sukamulya Experimental Station is pepper stem borer (Lophobaris piperis) and Thrips sp. We studied the effect of biopesticides of botanical pesticides and biological pesticides at the Sukamulya Experimental Station, Sukabumi – West Java in 2020 against the pepper stem borer L. piperis and Thrips sp. in pepper plantation. The research was designed in a randomized block with three treatments, namely (1) botanical pesticides, (2) biological pesticides and (3) control (water), and nine replications. The treatment application is carried out once a month, done immediately after observing the intensity of the pest attack. The results showed that the attack of pepper stem borer was low (below 10%), so the effect of the treatment could not be seen significantly. The Thrips attack was high enough, it was seen that there was the ability of botanical pesticides to reduce the intensity of the attack. Meanwhile, the biological pesticide had not yet shown its ability to reduce the intensity of Thrips sp.

2018 ◽  
Vol 7 (1) ◽  
pp. 1
Author(s):  
Akhmad Sopian ◽  
Zainudin Zainudin

Farmers generally plant pepper on ultisol soil. Ultisol soil is classified as acid mineral soil which has a wide distribution, but has the potential to develop agricultural land including pepper plantations. The tendency of land used for agricultural activities shows a decrease in soil fertility, indicated by the occurrence of erosion, imbalance of nutrients present in the soil and stronger soil dependence on fertilizer, as well as lower crop production. The research aims to find out the characteristics of pepper land, productivity, potential land for the development of pepper plants in Muara Badak District. This research was carried out using survey methods with stages including; overlaying land maps, interviews, secondary data inventory, in the form of data on the number of farmers, land area, production and cultivation techniques, and analysis of soil samples in the laboratory. The results showed that the population / ha of pepper plants was different for each farmer, where the spacing was 110 x 110 cm, 120 x 120 cm, 130 x 130 cm and 140 x 140 cm with a population between 1300 - 4500 staples / ha. Farmers generally use lodrin organic fertilizer, but are not carried out intensively, and the land management system does not pay attention to the aspect of soil conservation, farmers' land has been cultivated for generations without using terraces and soil cover. The tendency of nutrient loss on the land is quite high because the land is located on a hill and is quite steep at 16-40% slope. Pepper productivity in the study area is quite high, with an average of 1,437 kg / ha. The highest productivity in Salo Palai village reached 1970 kg / ha, while the lowest in Batu Batu village was 830 kg / ha. The results of soil analysis in the two study locations that the content of the element N was classified as medium, the total K was classified as high to very high. pH and CEC are low, this can affect nutrient absorption, so that lime is needed and the addition of organic matter if fertilization is carried out.


Author(s):  
E.V. Shishkina ◽  
S.V. Zharkova ◽  
O.V. Malykhina

Представлены результаты работы селекционеров Западно-Сибирской ООС – филиала ФГБНУ ФНЦО по культуре лука алтайского. Из 18 образцов были выделены перспективные, из которых в 2008 году отобран образец № 11. Дальнейший клоновый отбор позволил отобрать образец № 61/98, который по ряду показателей превосходит районированный сорт. В 2017 году этот образец передан на испытание в ГСИ, как сорт Виктор.The accomplishments of the plant breeders of the West Siberian Vegetable Experimental Station, the Branch of the Federal Scientific Centre of Vegetable Crop Production, regarding Altai onion cultivation are discussed. Eighteen candidate varieties were examined, promising ones were selected, and the candidate variety No. 11 was selected in 2008. Further clone selection made it possible to select the candidate variety No. 61/98 which exceeded the released variety in terms of a number of indices. In 2017, this candidate variety was submitted for State Variety Testing as Viktor variety.


2021 ◽  
Vol 12 (1) ◽  
pp. 696-698
Author(s):  
Asha Renjith ◽  
Payal Lodha

Piper nigrum Linn. (Black pepper)  belongs to the family Piperaceae and an economically and medicinally important spice and is a native of Southern India. Leaf marginal gall is transmitted by Liothrips karnyi belonging to family Phlaeothripidae of order Thysanoptera (Thrips). Insect induced galls arise due to growth reaction of plants due to the attack of cecidozoa, also known as zoocecidia. The growth and development of the host plant alter due to the infestation of the insect, which involves certain complex phenomena. The different groups of cecidozoa influence the plants in such a way as to produce galls at different stages in their life history. Most of the cecidozoa cause galls only in their developmental stages, but some of them are capable of inducing galls both in larval as well as adult stages. The crop production in India has been adversely affected due to the infestation of pests. And it is necessary to use different approaches of disease management to curb the infestation, and significant researchers have shown progress to protect the crops in an eco-friendly manner. Piperine exhibits diverse pharmacological activities like antihypertensive, antiplatelets, antioxidant, antitumor, antipyretic, analgesic, anti-inflammatory, anti-diarrheal, antibacterial, antifungal, anti-reproductive, insecticidal activities. In the present investigation, the biological method of disease management of marginal leaf gall transmitted by Liothrips karnyi has been undertaken. The biological control of leaf diseases has been significant on the increased reflection of environmental problems over pesticide uses.


2020 ◽  
Vol 8 (1) ◽  
pp. 7
Author(s):  
RODIAH BALFAS ◽  
SUPRIADI SUPRIADI ◽  
T. L. MARDININGSIH ◽  
ENDANG SUGANDI

The cause of stunting disease of black pepper (Piper nigrum) in Indonesia has not yet been confirmed cither due o a virus or mycoplaam. However, similar disease found on black pepper plants in the Southeast Asia is caused by Piper yellow mottle virus (PYMV) which is transmitted by Planococcus citri. This expeiments was aimed o examine the cause of the stunting disease and its insect vectors. The expeiment were conducted from October 1998 to May 2001. Diseased vegetative materials of black pepper plants showing stunting disease were collected from Sukamulya, Sukabumi. The potential insect vectors were collected from black pepper plants in Bogor, IP Sukamulya (Sukabumi), Lampung and Bangka. The insects were fed on the diseased plants obtained from Lampung, Bogor and IP Sukamulya, then transferred o the healthy plants. The healthy plants were produced rom true seeds and cutings oiginated rom Bogor and IP Sukamulya. The tested plants were incubated at the green house and examined for disease development. Diseased leaf samples collected rom black pepper plant rom IP. Sukamulya and the transmitted plants were sent to the University of Minnesota, USA for Ihe virus (PYMV) by using ISEM (immunosorbent electron microscope). The result snowed that the leaves samples rom IP. Sukamulya were infected by PYMV. The morphology and size of the virus were similar to those caused stunting disease in the South East Asia. Potential insects vectors found on the diseased black <br /><br />pepper plants were two mealybugs, P. minor and Ferrisia virgata (Hemiptera; Coccoidca: PaaidbcoccidaeX aa well as an aphid Toxoptera aurantii (Hemiptera: Aphidoidea: Aphididae). The first tial on disease transmission by using P. minor, previously reared on the potato tubers, showed one out of ten tested plants produced disease sympom. The subsequent trial using P minor, bred on healthy black pepper seedlings, showed thee out often tested plants developed disease symptoms. None of the aphid transmitted plants developed Ihe disease. This study confirmed thai PYMV b the cause of stunting disease on black pepper in IP Sukamulya and Lampung and P. minor as the insect vecor of the disease.<br /><br />


1996 ◽  
Vol 15 (4) ◽  
pp. 327-333 ◽  
Author(s):  
E.G. Rubia ◽  
A.A. Lazaro ◽  
K.L. Heong ◽  
Diah ◽  
Nurhasyim ◽  
...  
Keyword(s):  

Agriculture ◽  
2020 ◽  
Vol 10 (9) ◽  
pp. 381
Author(s):  
Israel Macias-Bobadilla ◽  
Marcela Vargas-Hernandez ◽  
Ramon G. Guevara-Gonzalez ◽  
Enrique Rico-Garcia ◽  
Rosalia V. Ocampo-Velazquez ◽  
...  

Chili pepper (Capsicum spp.) is one of the most economically important horticultural crops in the world; its production for the food and pharmaceutical industries has been increasing worldwide. The economic importance of this crop is due, in part, to the nutraceutical properties derived from its secondary metabolism. Drought is the main environmental factor that affects crop production. Nevertheless, studies involving water deficit have considered short-term responses to sharp water deficit rather than long-term acclimation processes through moderate and gradually increasing water deficits, which omitted the dynamics and profile of the secondary metabolism that are part of the plant’s defence system against this stress factor. The present study aimed to identify the different mechanisms that chili pepper plants use to cope with drought stress using a progressive decrease and increase of water availability, conditions that commonly occur for crops in open fields. Four treatments were applied as follows: gradual water deficit (GWD), initial waterlogging with gradual water deficit (IWGD), sudden water deficit with gradual recovery (SWDR), and no deficit of water (NDW). These conditions should represent a more real situation similar to that faced by plants in the agricultural environment. In order to evaluate the response mechanisms associated with these water deficits, changes in phenological variables, proline accumulation, and the gene expression of phenylalanine ammonia-lyase (PAL), chalcone synthase (CHS), peroxidase (POD), and superoxide dismutase (SOD) were measured in chili pepper plants growing on land under different irrigation regimes in two contrasting soil types in areas where chili pepper plants are cultivated in central Mexico. The variables evaluated showed a differentiated response of the mechanisms in plants growing under different levels of water deficit. Given the differential response observed for the gene expression and morphological and biochemical variables studied in chili pepper plants against different water regimes, in this work, this may have implications for more efficient use of water in crops with high nutraceutical content, in addition to prospects for using products derived from secondary metabolism in the pharmaceutical industry.


Zuriat ◽  
2015 ◽  
Vol 18 (2) ◽  
Author(s):  
D. Ruswandi ◽  
Dwi Wirawan ◽  
S. Ruswandi ◽  
F. Kasim ◽  
M. Rachmadi

Thirty-two TWC QPM hybrids were selected based on genotype × environment (G × E) interaction and stability. The experiment was conducted in three locations with differing conditions. TWC QPM hybrids were tested under nitrogen deficient and nitrogen sufficient fertilization at the Padjadjaran University Faculty of Agriculture Experimental Station, Jatinangor, Sumedang from March until July 2004. Another set of TWC QPM hybrids was tested under sufficient nitrogen fertilization at a high altitude location in Pangalengan from June until October 2004. Each experiment was arranged in a randomized block design with two replications with 32 TWC QPM hybrids and two check cultivars, i.e. Bisi-2 and Pioneer-7. Bartlett’s homogeneity test was applied to error derived from analyses of variances of every location. Combined analysis was done since error was homogenous for all observed characters. The combined analysis showed that there was G × E interaction for seed weight per 10 plants. Preliminary METs in West Java successfully selected newly developed TWC QPM hybrids based on stability and interaction between G × E. These hybrids are QPDMR-8-BCP1 and QPDMR-8-BCP2 for wide adaptive cultivars and QPDMR-35-BCP1, QPDMR-26-BCP1, QPDMR-8-BCP1, QPDMR-1-BCP2, QPDMR-8-BCP2, QPDMR-10-BCP2 and QPDMR-15-BCP2 specific adaptive cultivars.


2018 ◽  
Vol 22 (1) ◽  
pp. 115
Author(s):  
Trisnani Alif ◽  
Sedyo Hartono ◽  
Sri Sulandari

Mottle disease is an important disease in pepper plants caused by Piper yellow mottle virus (PYMoV). This study aims to determine the characterization of PYMoV biologically and molecularly. The pepper plant samples were obtained from pepper farmland in Kleben, Putat (Yogyakarta), and Air Buluh (Bangka). Virus particles are measured by electron microscopy. Virus transmission studies include mechanical transmission, vector, cuttings, grafting, and seeds. The molecular detection was done by using Polymerase chain reaction (PCR) method with PYMoV-F and PYMoV-R specific primers. The result, virus particles were found to be ± 30×130 nm in shape. Virus transmission studies indicate that PYMoV can be transmitted by Ferrisia virgata vectors, cuttings, grafts and seeds but cannot be transmitted through mechanical inoculation. Molecular test results showed that samples of Kleben, Putat and Air Buluh pepper plants were positively detected to contain PYMoV and amplified at 400 bp. The result of nucleotide base sequence analysis showed the isolates of Putat and Air Buluh had the highest homology with PYMoV of India 2 about 95% while Kleben isolate had 96% homology with PYMoV of India 1. IntisariPenyakit belang merupakan salah satu penyakit penting pada tanaman lada yang disebabkan oleh Piper yellow mottle virus (PYMoV). Penelitian ini bertujuan untuk mengetahui karakterisasi PYMoV secara biologi dan molekuler. Sampel tanaman lada diperoleh dari lahan petani lada di Desa Kleben, Putat (Yogyakarta), dan Air Buluh (Bangka). Partikel virus diukur dengan mikroskop elektron. Kajian penularan virus meliputi penularan mekanik, vektor, stek, penyambungan, dan biji. Deteksi secara molekuler dengan metode Polymerase chain reaction (PCR) dengan pasangan primer spesifik PYMoV-F dan PYMoV-R. Partikel virus yang ditemukan berukuran ± 30×130 nm berbentuk batang. Kajian penularan virus menunjukkan bahwa PYMoV dapat ditularkan melalui vektor Ferrisia virgata, stek, penyambungan dan biji namun tidak dapat ditularkan melalui inokulasi mekanik. Hasil uji molekuler menunjukkan bahwa sampel tanaman lada Kleben, Putat dan Air Buluh positif terdeteksi PYMoV dan teramplifikasi pada 400 bp. Hasil analisis sekuen basa nukleotida menunjukkan isolat Putat dan Air Buluh memiliki homologi tertinggi dengan PYMoV India 2 sekitar 95% sedangkan isolat Kleben memiliki homologi 96% dengan PYMoV India 1.


2021 ◽  
Vol 8 (2) ◽  
pp. 194
Author(s):  
Idha Kusumawati ◽  
Syailendra Mahatmaputra ◽  
Rohman Hadi ◽  
Rohmania Rohmania ◽  
Subhan Rullyansyah ◽  
...  

Background: Pepper plants belong to the Piperaceae family with many pharmacological activities. The fruits of these plants have been widely used traditionally for various therapies, one of which is an aphrodisiac. Objective: The purpose of this study was to determine the aphrodisiac activity of the fruits of three pepper plants, Piper nigrum, Piper retrofractum, and Piper cubeba to prove their traditional use. Methods: The level of piperin, the active compound of plants from the family Piperaceae, was also determined in the ethanolic extract of those three fruits of the pepper plant. The aphrodisiac activity was determined by counting the number of introducing and mounting mice. The acute toxicity test of the extract was carried out according to the OECD-423 guidelines. Results: The ethanolic extract of Piper nigrum fruits had the highest piperin concentration, while the ethanolic extract of Piper retrofractum fruits had the highest aphrodisiac activity, according to the findings. During the entire duration of the acute toxicity study, no signs of toxicity or mortality were discovered.Conclusion: This study proves that all fruits of three species of pepper plants exhibit aphrodisiac activity. Furthermore, this study also shows that not only piperin is responsible for the aphrodisiac effect.


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