scholarly journals Effect of intercropping on the incidence of Jassid (Amrasca biguttula biguttula Ish.) and Whitefly (Bemesia tabaci Guen.) in Okra (Abelmoschus esculentus L. Moench)

2018 ◽  
Vol 1 (1) ◽  
pp. 179-188 ◽  
Author(s):  
Aasma Sharma ◽  
Khem Raj Neupane ◽  
Rajendra Regmi ◽  
Ram Chandra Neupane
Keyword(s):  
Petroselinum Crispum ◽  
Cost Ratio ◽  
Asian Countries ◽  
Foeniculum Vulgare ◽  
Benefit Cost Ratio ◽  
Yield Parameters ◽  
Benefit Cost ◽  
And Control ◽  
Pod Length ◽  
Daucas Carota

Okra is one of the most important summer vegetables in South Asian countries including Nepal. However, the damage by insects like Jassid (Amrasca biguttula Ish.) and whitefly (Bemisia tabaci Guen) has resulted in significant reduction of its production. An experiment was conducted based on intercropping taking okra (Abelmoschus exculentus L. Moench) as the main crop in Arghau, Lekhnath-27, Kaski, Nepal from March 4 to May 24, 2018. The intercrops used were coriander (Corriander sativum), carrot (Daucas carota), fennel (Foeniculum vulgare) and parsley (Petroselinum crispum). The population of jassid and whitefly was recorded from three leaves representing the different strata (bottom, middle and top) of the vegetative parts; and related yield parameters were also observed to correlate with the level of population incidence of these pests. Least numbers of jassids (5.50±0.29, 6.94±0.43, 8.00±0.41 and 3.69±0.76) were observed respectively at 30, 40, 50 and 60 days after sowing (DAS) in okra+ coriander. Likewise, okra + coriander intercropping was effective in inhibiting the population of whitefly (7.50±0.59, 8.56±0.19, 10.25±0.66 and 7.06±0.42) at 30, 40, 50 and 60 days after sowing (DAS) respectively. In contrary, the highest number of jassids and whiteflies were observed in okra + parsley and control (okra only). Both pod length (cm) and yield (t/ha) were the highest (17.92±0.57 and 28.20±0.49 respectively) in okra + coriander and were the lowest (16.42±0.21 and 27.58±0.39 respectively) in okra + carrot. The benefit-cost ratio was in order okra + coriander > okra + carrot > okra + fennel > okra + parsley > control (okra only). Among the different intercrop combinations, the okra + coriander was found most effective that could be suggested as one of the alternative strategies to limit the population of pests; jassid and whitefly in okra.

scholarly journals Development of integrated multi-trophic aquaculture (IMTA) for tropical brackishwater species in Sindhudurg District, Maharashtra, west coast of India

2018 ◽  
Vol 65 (1) ◽  
Author(s):  
C. P. Balasubramanian ◽  
Shailesh S. Mhaskar ◽  
Krishna Sukumaran ◽  
A. Panigrahi ◽  
Kurmaraguru Vasagam ◽  
...  
Keyword(s):  
Experimental System ◽  
Open Water ◽  
Trophic Levels ◽  
Cost Ratio ◽  
Benefit Cost Ratio ◽  
System A ◽  
Etroplus Suratensis ◽  
Penaeus Indicus ◽  
Benefit Cost ◽  
And Control

Integrated multi-trophic aquaculture (IMTA), farming of species from different trophic levels and with complimentary ecosystem function, is regarded as a suitable approach to develop a sustainable aquaculture system. In order to establish an IMTA system, a study was carried out in Sindhudurg District, Maharashtra, India for selected tropical brackish-water species. Two equal sized pens (250 m2) were constructed for IMTA and control respectively in each land based system and open water cages were set in the estuary. Different combinations of fed species (Chanos chanos, Etroplus suratensis, Mugil cephalus, Penaeus indicus) and an extractive crop (Crassostrea madrasensis) were stocked in IMTA experimental system whereas monoculture of P. indicus served as control. Water quality characteristics were found to be within the admissible limits. Soil organic carbon was found to be lesser in the IMTA system compared to control. The productivity of IMTA system was higher than control: 3250 kg h-1 vs 2000 kg ha-1. Further, income and benefit-cost ratio was found to be higher in IMTA pens. The present study concludes that IMTA is a possible option for system diversification as well as species diversification without compromising economic profitability of culture.

scholarly journals Comparative Analysis of Rice Performance and Profitability with the System of Rice Intensification (SRI) and Traditional Practices (TP) in Ziguinchor District, Senegal

2021 ◽  
Vol 2 (1) ◽  
pp. 22-36
Author(s):  
Pierre C. C. DIEDHIOU ◽  
Antoine SAMBOU ◽  
Ousmane NDIAYE, NGor NDOUR ◽  
Seydou K. DIEDHIOU
Keyword(s):  
Comparative Analysis ◽  
Rice Production ◽  
System Of Rice Intensification ◽  
Cost Ratio ◽  
Traditional Practices ◽  
Traditional System ◽  
Benefit Cost Ratio ◽  
Yield Parameters ◽  
Rice Intensification ◽  
Benefit Cost

The "System of Rice Intensification"(SRI) represents a sustainable alternative to improve household yields and incomes. This study aimed to evaluate the yields and the profitability of the SRI and the Traditional Practices (TP) in Ziguinchor district, Senegal. A directed sampling based on criteria for selecting the system used and the cultivated varieties common to both systems was applied to collect the yield parameters and yields of paddy rice. Thus, 18 producers in the Badiate, Essyl, and Fanda sites were selected, nine per system and four 1 m2 yield squares were installed in each selected producer plot. A total of 72 yield squares, 36 per system, were installed, and an individual questionnaire was randomly administered to 55 producers using at least one of the systems to collect data on rice production and costs. The yield parameters including the number of fertile tillers per m2, the number of spikes, the weight of the 1000 grains are significantly higher (p<0.05) in the SRI including yield compared to the traditional system. Transplanting density and plant duration are higher in TP (26±5.6 plants/m2 and 26 days) than in SRI (16±0.4 plants/m2 and 16 days). The lower the transplanting density, the higher the yield parameters and the yield. The economic profitability, determined based on the benefit/cost ratio, is higher in SRI (1.5) than in TP (1.2). The SRI required a lot of technicality in its implementation and generated more cost of production. However, SRI was more productive and economically more profitable than the traditional system.

scholarly journals Influence of Mother Rhizome Retrieval and Organic Treatment of the Retrieved Plants on Economic Yield of Ginger at Salyan, Nepal

2018 ◽  
Vol 35 (1) ◽  
pp. 203-209
Author(s):  
M. Basnet ◽  
H. Gurung
Keyword(s):  
Plant Height ◽  
Applied Field ◽  
Block Design ◽  
Tiller Number ◽  
Cost Ratio ◽  
Benefit Cost Ratio ◽  
Randomized Block Design ◽  
Retrieval Factor ◽  
Benefit Cost ◽  
And Control

An experiment was conducted at Salyan, Nepal to assess the mother rhizome retrieval and organic treatment of the same retrieved plant on economic yield of ginger during 2015/16.‘ Kapurkot Aduwa-1’, a superior Nepalese variety was used for this experiment. Two dates i.e. 1 September and 7 September were used as a time of retrieval factor and seven organic treatments i.e. Trichoderma, Jeevatu, Bordeaux paste, mixture of neem and timur dust, vermicompost, jholmal and control as second factor and these 14 treatment combinations were laid out in factorial randomized block design with three replications. The plant height, leaf number, tiller number was found to be significantly highest with vermicompost treatment on all days 5 days interval after harvesting of the mother rhizome whereas the lowest was observed at control. The mother rhizome yield and fresh rhizome was found to be significantly highest on vermicompost applied field with 1.7 t/ha and 22.8 mt/ha respectively and lowest fresh rhizome yield (15.5. t/ha) was found with control. The disease yield was significantly lowest (0 t/ha) and highest (0.2 t/ha) with the control. Benefit cost ratio was found to be significantly highest (1.74) and lowest at control (1.32).

Research on Hardware-in-the-Loop Simulation System for Terminally Guided Projectile Guidance and Control System

2013 ◽  
Vol 655-657 ◽  
pp. 1479-1483
Author(s):  
Jiu Hui Ding ◽  
Bai Wei Guo ◽  
Shuang Wei
Keyword(s):  
Control System ◽  
Cost Ratio ◽  
Hardware In The Loop ◽  
Benefit Cost Ratio ◽  
Guidance And Control ◽  
Comparison Results ◽  
Simulation Results ◽  
High Benefit ◽  
Benefit Cost ◽  
And Control

one hardware-in-the-loop simulation (referred to HILS) system for terminally guided projectile guidance and control system has been built, based on the analysis to the demand of HILS for the guidance and control system of the terminally guided projectile. The running process and the comparison results of the HILS & mathematical simulation have been given. The simulation results show that the movement of the terminally guided projectile could be simulated by the HILS system, which has a high benefit-cost ratio and confidence.

scholarly journals Root-shoot characteristics, yield and economics of mungbean (Vigna radiata L.) under variable rates of phosphorus and nitrogen

2020 ◽  
Vol 49 (1) ◽  
pp. 13-19
Author(s):  
Abdul Hadi Omran ◽  
Anchal Dass ◽  
GA Rajanna ◽  
Shiva Dhar ◽  
Anil K Choudhary ◽  
...  
Keyword(s):  
Grain Yield ◽  
Harvest Index ◽  
Production Efficiency ◽  
Growth Yield ◽  
Cost Ratio ◽  
Area Index ◽  
Benefit Cost Ratio ◽  
Net Returns ◽  
Benefit Cost ◽  
Pod Length

A field experiment was conducted to study the effect of nitrogen (N) and phosphorus (P) nutrition on growth, yield, economics, production efficiency (PE) and monetary efficiency (ME) of mungbean. Application of 55 kg N/ha caused improvement in root- and shoot-dry weight, leaf area index and biological yield. However, 40 kg N/ha recorded the highest pod length (8.2 cm), grains/plant (284), grain yield (2.1 t/ha), harvest index (29.4%), net returns (1,28,651 AFN/ha), benefit: cost ratio (2.6), PE (24 kg/ha/day) and ME (1,429 AFN/ha/day). Use of 60 kg P2O5 /ha resulted in the highest pod length (8.3 cm), seeds/plant (285), grain yield (2.0 t/ha), harvest index (30.5%), net returns (1,161,22.9 AFN/ha), benefit: cost ratio (2.4), PE (22.4 kg/ha/day) and ME (1,290 AFN/ha/day). The combination of 40 kg N/ha and 60 kg P2O5 /ha recorded the highest yield, net returns, benefit: cost ratio, PE and ME. Hence, mungbean grown field should be treated with 40 kg N/ha and 60 kg P2O5/ha fertilizers for its higher productivity and profitability.

scholarly journals Yield and economics of chilli hybrid Sitara with the use of different nutrient management practices and organic amendments

2018 ◽  
Author(s):  
B. M. Ranjitha ◽  
T. B. Allolli ◽  
D. R. Jhanavi ◽  
N. Kavyashree ◽  
S. Gururaj ◽  
...  
Keyword(s):  
Field Experiment ◽  
Management Practices ◽  
Nutrient Management ◽  
Maximum Yield ◽  
Organic Amendments ◽  
Cost Ratio ◽  
Benefit Cost Ratio ◽  
Yield Parameters ◽  
High Benefit ◽  
Benefit Cost

A field experiment was conducted in Dharwad district, Karnataka during kharif season of 2015-2016, with an objective to assess the effectiveness of nutrient management practices and organic amendments on yield and economics of chilli (Capsicum annuum L.) hybrid Sitara. The results revealed that the maximum yield parameters were recorded due to adoption of INM practices (among nutrient management practices) and Panchagavya (among organic amendments). INM practices and Panchagavya recorded high Benefit: cost ratio of 2.7 and 2.6 respectively.

scholarly journals Characterization of cowpea to harvest rainwater for wheat in semiarid conditions

2021 ◽  
Vol 19 (3) ◽  
pp. e1201-e1201
Author(s):  
Muhammad R. Sajjad ◽  
Keyword(s):  
Green Manure ◽  
Rainwater Harvesting ◽  
Triticum Aestivum L ◽  
Conventional Tillage ◽  
Wheat Crop ◽  
Cost Ratio ◽  
Net Income ◽  
Benefit Cost Ratio ◽  
Benefit Cost ◽  
And Control

Aim of study: A field experiment was executed, under rainfed conditions from 2014-15 to 2017-18, to study the role of cowpea (Vigna unguiculata L.) in rainwater harvesting to enhance the wheat (Triticum aestivum L.) yield. Area of study: Rain-fed area of Pothwar region Punjab Pakistan. Material and methods: We designed three treatments (T1: control; T2: cowpea grown after conventional tillage and incorporated into soil to act as “green manure”; and T3: grown without any tillage practice, cut with sickle and spread as “mulch”). The effect of these treatments on soil moisture conservation was studied against conventional farmer’s practice, wherein no host crop is grown before wheat sowing. Main results: Available soil water remained highest in T2 during first three years when sufficient rainfall was received contrary to fourth year with low rainfall. The results revealed that cowpea biomass of 15.2 t/ha and 13.72 t/ha, from T3 and control respectively, were produced during 2015 corresponding to 213 mm rainfall. Whereas, these quantities increased to 25.69 t/ha and 24.29 t/ha during 2017 with 390 mm of rainfall. The study revealed that net income from wheat crop under T2 was Rs. 6000 and Rs. 17000 per hectare higher than that of control during the first two years respectively. Contrarily, net income from T2 was found negative and benefit-cost ratio reduced to 0.79 when very low rainfall was received during the last year. Research highlights: Use of cowpea as green manure gave maximum net return if sufficient rainfall is received during decomposition of cowpea and hence recommended for in-situ rainwater harvesting.

scholarly journals Effect of Nitrogen on Weed Infestation and Performance of Boro Rice Under Two Selected Herbicides

2016 ◽  
Vol 18 (2) ◽  
pp. 53-63 ◽  
Author(s):  
MM Morshed ◽  
MN Bari ◽  
QA Khaliq ◽  
MS Alam
Keyword(s):  
Grain Yield ◽  
Cost Ratio ◽  
Weed Species ◽  
Control Efficiency ◽  
Benefit Cost Ratio ◽  
Weed Infestation ◽  
And Performance ◽  
Benefit Cost ◽  
And Control ◽  
Boro Rice

A field experiment was conducted at the experimental farm of Bangabandhu Sheikh Mujibur Rahman Agricultural University (BSMRAU), Salna, Gazipur from November 2013 to May 2014 to determine the effect of nitrogen and herbicide on weed infestation and performance of Boro rice (cv. BRRIdhan28). Five nitrogen doses i.e. 0 , 50.6 , 101.2 , 151.8 and 202.4 kg ha-1 under selected pre-emergence and post-emergence herbicides along with one weed free and control (unweeded) treatment were imposed in the experiment. Nine weed species was found to dominate in the experimental plots where Scirpus maritimus L. showed the maximum visual abundance (58%) followed by Leersia hexandra sw., Paspalam distichum L. and Fimbristylis miliacea L. Post-emergence herbicide contributed to higher control efficiency than that in pre-emergence herbicide. Post-emergence herbicide without receiving nitrogen showed the highest weed control efficiency (97.39) at 60 days after transplanting. Treatment receiving N @ 200.4 kg ha-1 under post-emergence herbicide showed the highest number of tiller per hill (13.00), total dry matter (1568.6 g m-2), panicles per hill (10.60), filled grains per panicle (125.20) and grain yield (6.46 t/ha). N-dose 151.8 kg ha-1 under postemergence herbicide contributed to the second highest grain yield (6.41 t ha-1) with the highest benefit cost ratio of 1.60 but 50.6 kg N ha-1 under post-emergence herbicide showed the maximum Nitrogen use efficiency of 0.49. The study revealed that nitrogen dose up to 151.8 kg ha-1 might be increased above the recommended dose under coverage of a suitable post-emergence herbicide for profitable rice production.Bangladesh Agron. J. 2015, 18(2): 53-63

Comparative Effectiveness Of Seed Treating And Foliar Insecticides Against Sucking Pests Of Cotton And Impact On Their Natural Enemies

2013 ◽  
Vol 38 (1) ◽  
pp. 61-70 ◽  
Author(s):  
SMA Hossain ◽  
MA Baque ◽  
MR Amin
Keyword(s):  
Natural Enemies ◽  
Untreated Control ◽  
Seed Treatment ◽  
Foliar Spray ◽  
Cost Ratio ◽  
Research Station ◽  
Benefit Cost Ratio ◽  
Benefit Cost ◽  
Thrips Population ◽  
Cotton Cultivar

The Imidacloprid insecticide, Gaucho 70 WS at 1.5, 2.5, 3.5, 4.5 and 5.5 g/kg seed was used as seed treatment and monocrotophos 40 WSC at 1120 ml/ha was applied as foliar spray on CB9 cotton cultivar to suppress aphid, whitefly and thrips, and impact on their natural enemies during 2008-2011 at the Regional Cotton Research Station, Dinajpur, Bangladesh. The activity of natural enemies, such as ladybird beetle, lacewing, syrphid, and spider population on the sucking pests attacking cotton cultivar CB9 and yield of cotton were recorded. Imidacloprid significantly reduced aphid, whitefly, and thrips population on cotton crops compared to untreated control or foliar spray of monocrotophos 40 WSC at 1120 ml/ha. Ladybird beetles, lacewings, syrphids, and spiders were abundant in the field but their population decreased in the treated plots compared to untreated control. The CB9 cotton cultivar produced significantly higher yield (1.73 t/ha) with a benefit cost ratio 12.47 when seeds were treated with Imidacloprid at 5.5 g/kg fuzzy seed. This study indicated that Imidacloprid (Gaucho 70 WS) used as a seed treatment may be suggested to the cotton growers for controlling sucking pests. Bangladesh J. Agril. Res. 38(1): 61-70, March 2013 DOI: http://dx.doi.org/10.3329/bjar.v38i1.15190

EVALUASI TERHADAP PENGELOLAAN SAMPAH DALAM MENINGKATKAN PELAYANAN ASET DI KOTA PEMATANGSIANTAR

2017 ◽  
Vol 13 (3) ◽  
pp. 240
Author(s):  
Novdin M Sianturi
Keyword(s):  
Net Present Value ◽  
Payback Period ◽  
Rate Of Return ◽  
Cost Ratio ◽  
Internal Rate Of Return ◽  
Present Value ◽  
Benefit Cost Ratio ◽  
Internal Rate ◽  
Benefit Cost

Abstrak: Pengelolaan sampah di Kota Pematangsiantar masih bertumpu pada pendekatan akhir (kumpul-angkut-buang), dengan tingkat pelayanan yang rendah, sehingga untuk meningkatkan pelayanan sampah, perlu dilakukan pemilahan di tempat penampungan sementara (TPS). Penelitian ini bertujuan untuk mengkaji sistem pengelolaan sampah dengan melakukan pemilihan di TPS dapat meningkatkan pelayanan aset persampahan sampai tahun  2015 secara teknis operasional dan dari aspek keuangan. Analisa teknis operasional aset pengelolaan sampah mulai dari pewadahan, pengumpulan dan pengangkutan sedangkan analisa keuangan dan analisa kelayakan menggunakan Net Present Value, Internal Rate of Return, Benefit/Cost Ratio, dan Payback Period. Dari hasil analisa tersebut diperoleh suatu sistem pengelolaan sampah dengan pemilihan di TPS berdasarkan zona pelayanan dengan skala prioritas secara bertahap daritahun 2013-2017, dapat meningkatkan cakupan pelayanan sampah eksisting rata-rata 6,69 %, cakupan pelayanan TPS eksisting rata-rata 8,29 %, dan cakupan pelayanan truk pengangkut sampah eksisting rata-rata 12,03 %. Investasinya layak, diperoleh Net Cashflow pada tahun 2020 sebesar Rp 1.720.242.284,-, NPV suku bunga 15 % bernilai positif, IRR > MARR 15 %,  B/C Ratio > 1, dan PP 4,7 tahun, lebih pendek dari periode investasi 10 tahun. Dari Metode penelitian ini maka pengumpulan data, observasi lapangan dan pengukuran contoh timbulan sampah dengan sampel 4 TPS perumahan yang terlayani pengangkutan.

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