scholarly journals Efficacy of commercial insecticides for cowpea pod borer (Maruca vitrata F.) management in Pokhara, Nepal

2021 ◽  
Vol 4 (1) ◽  
pp. 165-175
Author(s):  
Lok Nath Aryal ◽  
Rajendra Regmi ◽  
Santosh Lohani ◽  
Yubaraj Bhusal
Keyword(s):  
Field Experiments ◽  
Block Design ◽  
Insect Pest ◽  
Grain Legume ◽  
Cost Ratio ◽  
Research Station ◽  
Emamectin Benzoate ◽  
Benefit Cost Ratio ◽  
Randomized Block Design ◽  
Pod Borer

Cowpea (Vigna unguiculata Walp.) is a major grain legume used as vegetables and pulses. Among the several insect pest of cowpea, spotted pod borer is one of the most destructive pest. To evaluate the available chemical pesticides for pod borer management, a set of field experiments on cowpea variety Malepatan-1 were conducted at Horticulture Research Station, Malepatan, Pokhara in years 2019 and 2020. The experiments were laid out in Completely Randomized Block Design (RCBD) having seven  treatments viz.Flubendiamide 39.35 % SC @ 0.3 mL/L, Chlorantraniliprole 18.5 % SC @ 0.2 mL/L, Emamectin benzoate 5 % SG @0.3 g/L, Spinosad 45 % SC @0.3 mL/L, Bacillus thuringiensis Kurstaki @2g/L, Azadirechtin 0.03%@ 5mL/L and Control with four replications. Flubendiamide 39.35 % SC @ 0.3 mL/L and Emamectin benzoate 5 % SG @0.3 g/L were found the most effective insecticides in lowering cowpea flower and pod damage with highest benefit cost ratio; however, considering environment, Chlorantraniliprole 18.5 % SC @ 0.2 mL/L and Spinosad 45 % SC @0.3 mL/L being next effective treatments could be viable option to manage spotted pod borer in cowpea production.   

Nitrogen Requirement of Potato for Eastern Indo-Gangatic Plain of India

2020 ◽  
Vol 7 (03) ◽  
Author(s):  
S. K. YADAV ◽  
R. K. SINGH ◽  
V. K. DUA ◽  
S SINGH ◽  
SARALA YADAV ◽  
...  
Keyword(s):  
Tuber Yield ◽  
Potato Crop ◽  
Block Design ◽  
Nitrogen Level ◽  
Cost Ratio ◽  
Research Station ◽  
Net Benefit ◽  
Marketable Tuber ◽  
Benefit Cost Ratio ◽  
Significant Difference

A field experiment was carried out during 2015-16 and 2016-17 at ICAR-Central Potato Research Station, Patna, Bihar, in randomized block design with four replications with objective to quantity the optimum requirement of nitrogen to potato crop. Significantly the highest plant height was recorded with nitrogen level of 300 kg/ha. Distributions of the smallest size of tuber yield of potato were decreasing with increasing the level of nitrogen. There was about 26.0% more yield of the smallest size tuber of potato was recorded with zero nitrogen as compare to the highest level of nitrogen i.e. 300 kg/ha. Increasing the nitrogen over the level of 150 to 225 kg per hectare, increasing the yield of tuber gradually slower rate than nitrogen level from 0 to 150 kg/ha. Total and marketable tuber yield of potato were increasing significantly with increasing level of nitrogen up to 150 kg/ha. There was no significant difference in marketable tuber yield was found for nitrogen level between 150 and 225 kg/ha. Highest (1.66) net benefit cost ratio was also recorded with level of nitrogen @ 150 kg/ha in potato. Hence, application of nitrogen @ 150 kg/ha was found statistically and economically more beneficial for potato cultivation in Eastern Indo-Gangatic plain of India.

scholarly journals Effect of spacing and fertilizer management on the yield and yield attributes of mukhikachu (Colocasia esculenta Schott.)

2016 ◽  
Vol 41 (4) ◽  
pp. 713-723
Author(s):  
S Akther ◽  
F Ahmed ◽  
MR Islam ◽  
MA Hossen ◽  
AHMM Rahman Talukder
Keyword(s):  
Field Experiments ◽  
Block Design ◽  
Recommended Dose ◽  
Cost Ratio ◽  
Plant Spacing ◽  
Yield Attributes ◽  
Benefit Cost Ratio ◽  
Maximum Benefit ◽  
Randomized Complete Block Design ◽  
Benefit Cost

Field experiments were carried out in the Agronomy field of BARI, Joydebpur, RARS, Jamalpur and RARS, Ishurdi during two consecutive kharif seasons of 2012 and 2013 to determine the suitable plant spacing and optimum fertilizer dose for higher yield of mukhikachu. Three levels of spacing viz., 60 cm x 60 cm, 60 cm x 45 cm and 60 cm x 30 cm and three levels of fertilizer dose viz., recommended dose (3000-96-27-81-18 kg ha-1 of CD-N-P-K-S), 25% less than the recommended dose and 25% higher than the recommended dose were used as treatment variables. The experiments were laid out in factorial randomized complete block design with three replications. Results revealed that the closer spacing (60 cm x 30 cm) in combination with 25% higher than the recommended fertilizer dose gave the maximum edible yield of mukhikachu (two years average) at all locations (20.04 t ha-1, 20.75 t ha-1 and 16.63 t ha-1 at Joydebpur, Jamalpur and Ishurdi, respectively). The wider spacing (60 cm x 60 cm) coupled with 25% less than the recommended fertilizer dose produced the lowest yield (two years average). The maximum benefit- cost ratio (two years average) was obtained from the combination of the recommended fertilizer dose and 60 cm x 30 cm spacing, that were 2.93 at Joydebpur and 3.42 at Ishurdi, while at Jamalpur the maximum benefit-cost ratio (two years average) was found maximum from 60 cm x 30 cm spacing with 25% higher than the recommended fertilizer dose (3.12).Bangladesh J. Agril. Res. 41(4): 713-723, December 2016

Establishment Techniques on Yield and Economics of Pigeon Pea [Cajanus cajan (L.)] in North Western Zone of Tamil Nadu

2020 ◽  
Author(s):  
C. Sivakumar ◽  
A. Krishnaveni ◽  
M. Pandiyan ◽  
N. Tamilselvan
Keyword(s):  
Cajanus Cajan ◽  
Tamil Nadu ◽  
Field Experiments ◽  
Block Design ◽  
Pigeon Pea ◽  
Research Station ◽  
Net Income ◽  
Randomized Block Design ◽  
Western Zone ◽  
North Western

Field experiments were conducted to study the effect of establishment techniques on yield and economics of red gram [Cajanus cajan (L.)] under irrigated condition at Regional Research Station, Tamil Nadu Agricultural University, Paiyur - 635 112,Tamil Nadu, India during Kharif season of 2013-14 and 2014-15 respectively in randomized block design with four replications. The treatments are line sowing/dibbling of seeds, sowing behind the country plough, sowing in polybag and transplanting at 25 and 40 DAS, sowing in portrays and transplanting in 25 and 40 DAS. The redgram variety LRG 41 was used for study. The results revealed that, dibbling of seeds in lines recorded higher grain yield of 2351 kg ha-1, net income of Rs.99495/- and B:C ratio of 3.39. Thus, dibbling of seeds in lines recorded 6% higher over sowing in poly bag and transplanting at 25 DAS and 27% higher yield over sowing behind the country plough. Considering yield and economics, line sowing seems to better option for the farmers followed by sowing in polybags and transplanted in 25 DAS. Under transplanted situation, transplanting of seedlings at 30 DAS was more suitable where the monsoon was delayed for 30 to 45 days under rainfed situation. 

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).

Mechanized and profitable intercropping of legumesin autumn planted sugarcane

2016 ◽  
Author(s):  
Anil Khippal ◽  
Samar Singh ◽  
Meharchand ◽  
Rajender Sheokand ◽  
Jasbir Singh ◽  
...  
Keyword(s):  
Field Experiments ◽  
Threshold Level ◽  
Cane Yield ◽  
Variable Cost ◽  
Cost Ratio ◽  
Research Station ◽  
Equivalent Ratio ◽  
Benefit Cost Ratio ◽  
Pink Borer ◽  
Sole Cropping

To increase the area, production and productivity of sugarcane and legumes/oilseeds for increasing the profit of the farmers’, field experiments were conducted at Chaudhary Charan Singh Haryana Agricultural University, Regional Research Station, Karnal during 2005-06 and 2006-07 followed by demonstrations on intercropping of legumes/oilseed with sugarcane at farmers’ field in Kaithal district during 2009-10 and 2010-11. Cane yield did not reduce significantly due to intercropping except raya during 2005-06. The percent incidence of pink borer, shoot borer, top borer and root borer remained below economical threshold level (ETL). In all intercropping systems, total land equivalent ratio (LERt) was greater than unity, indicated yield advantage for the intercropped plots. Land equivalent coefficient (LEC) followed the same pattern as LERt. Total area time equivalent ratio (ATERt) values showed an advantage (22-28 %) with all intercropping systems than sole cropping with maximum advantage from sugarcane + chickpea. Sugarcane was more competitive than pea and lentil intercrops, whereas, raya and chickpea were more competitive than sugarcane. Higher competitive ratio values for the intercrops (CRi) indicated that all the intercrops were more competitive than sugarcane. Total values of actual yield loss (AYL) showed an advantage of 22-38% from intercropping compared to sole cropping. Highest monetary advantage index (MAI) value was obtained from sugarcane + pea intercropping system (75779). However, the minimum MAI was obtained from sugarcane + lentil intercropping system (62382). Demonstrations on intercropping at farmers’ field also resulted in higher gross returns, returns over variable cost and benefit: cost ratio.

scholarly journals Management Practices for Whitefly and Thrips in Mungbean

2021 ◽  
Vol 0 (0) ◽  
Author(s):  
M. S. Alam ◽  
M. Ali ◽  
M. M. Hossain ◽  
M.S. Hossain ◽  
M. A. Islam ◽  
...  
Keyword(s):  
Management Practices ◽  
Block Design ◽  
Reproductive Stage ◽  
Vegetative Stage ◽  
Cost Ratio ◽  
Emamectin Benzoate ◽  
Benefit Cost Ratio ◽  
Randomized Complete Block Design ◽  
Pest Incidence ◽  
Benefit Cost

Abstract This experiment was conducted at the central farm of Sher-e-Bangla Agricultural University, [23.740 N latitude and 90.350 E longitude] Sher-e-Bangla Nagar, Dhaka, Bangladesh, during the period of March to May, 2014 to study the Whitefly and Thrips pest incidence in mungbean and their management practices BARI Mung-5 was used as the test crop for this experiment. The experiment consists of the following treatments: T1: Nitro 505EC (Chloropyrifos+Cypermethrin) @ 2 ml/L of water at 10 days interval; T2: Casper 5 SG (Emamectin Benzoate) @ 2gm/L; T3: Voliam Flexi (Thiamethoxam+Chlorantraniliprole) @ 0.25 ml/L; T4: Tapnor 40 EC (Dimethoate) @ 2.0 ml/L; T5: Allion 2.5 EC (Lamda-Cyhalothrin) @; T6: Admire 200SL (Imidachorpid) @ 0.25 ml/Land T7: Control. The experiment was laid out in Randomized Complete Block Design (RCBD) with three replications. The lowest number of whitefly infestation per plant in the vegetative stage (4.18) and reproductive stage (2.13) was recorded from T6 treatment, whereas the highest (14.44) and (8.10) was recorded from T7 treatment in respective stage. Thrips infestation was higher (6.32) per 5 flower was recorded from T7 treatment whereas lower infestation (1.88) per 10 flower was recorded from T6. The lowest yield per hectare (1.27 ton) was found in T7 and lowest benefit cost ratio (4.16) was found in T5 whereas highest yield per hectare (1.53 ton) was found in T6 and highest benefit cost ratio (12.81) was found in T3 treatment. Among the management practices for controlling whitefly and thrips of mungbean Admire 200SL @ 0.25 ml/L of water was more effective which was followed by Voliam Flexi (Thiamethoxam+Chlorantraniliprole) @ 0.25 ml/L of water Farmers should use Admire 200SL(Imidachorpid) @ 0.25 ml/L of water at 10 days interval for controlling whitefly and thrips in mungbean.

scholarly journals Assessment of Selected Yellow Vein Mosaic Virus Resistant Varieties of Okra in Rabi Season of Chatra District in Jharkhand, India

2020 ◽  
pp. 112-115
Author(s):  
Dharma Oraon ◽  
Anjani Kumar ◽  
Ranjay Kumar Singh ◽  
U. K. Singh ◽  
Zunaid Alam
Keyword(s):  
Mosaic Virus ◽  
Block Design ◽  
Yellow Vein ◽  
Cost Ratio ◽  
Local Market ◽  
Net Income ◽  
Resistance Level ◽  
Benefit Cost Ratio ◽  
Yellow Vein Mosaic Virus ◽  
Randomized Block Design

An On-Farm Trial (OFT) was conducted in the year 2016-17 and 2017-18 to assess the resistance level of different okra varieties against yellow vein mosaic virus in Kharif season of Chatra district of Jharkhand. The experiment was conducted in vegetable growing village Gidhour in Gidhour block of Chatra district in Jharkhand. The trial was designed in randomized block design consisting of 20 replications with three technological option i.e. TO-I Arka Abhay (N100P60K50), TO-II Arka Anamika (N100P60K50) and-III Pusa Makhmali (N100P60K50). For assessment related to yellow vein mosaic, percentage infestation in 5sqm and yield q/ha and economic was considered. The lowest infestation of yellow vein mosaic virus was observed in Pusa Makhmali variety i.e. (3.8%) with yield of 132.5 q/ha. It was also found superior in terms of Gross Income, Net Income and Benefit: Cost Ratio followed by Arka Anamika and Arka Abhay, respectively. Farmers’ response was also positive in all respects except the availability of varieties in local market.

scholarly journals Bioefficacy and Economics of Certain Novel Generation Insecticides against Spotted Pod Borer, Maruca vitrata (Geyer) in Greengram (Vigna radiata L.)

2021 ◽  
Author(s):  
Elluru Sireesha ◽  
Gaje Singh ◽  
Rajendra Singh ◽  
Bhupendra Singh
Keyword(s):  
Grain Yield ◽  
Block Design ◽  
Cost Benefit ◽  
Maruca Vitrata ◽  
Emamectin Benzoate ◽  
Randomized Block Design ◽  
Pod Borer ◽  
Cost Benefit Ratio ◽  
And Control ◽  
Crop Research

Background: Spotted pod borer, Maruca vitrata, cause greater damage by attacking flowers, pods in greengram plants. This study investigates the efficacy and economics of certain novel insecticides when sprayed against spotted pod borer in green gram. Methods: The experiment was conducted at Crop Research Center, Sardar Vallabhbhai Patel University of Agriculture and Technology, Meerut, during kharif 2019 in randomized block design with eight treatments (Emamectin benzoate, Spinosad, Chlorantroniliprole, Indoxacarb, Novaluron, Profenophos, Triazophos and control) and three replications on variety SML668. Observations were taken at three, seven and eleven days after the first and second spray and the data thus recorded were analyzed. Result: The insecticide Chlorantraniliprole 20SC @ 0.025 ml/ lit has shown the highest efficacy with low per cent pod damage (7.33) and maximum grain yield (8.61q/ ha) against M. vitrata from the first day of application followed by Spinosad 45SC @ 0.25 ml/ lit with pod damage of 10.67 per cent and grain yield of 5.08 q/ ha. The highest cost-benefit ratio was obtained in Emamectin benzoate treatment (1:8.54), followed by chlorantraniliprole (1: 6.76).

scholarly journals Management Of Thrips And Pod Borers Using Chemicals, Botanicals And Biopesticides In Mungbean

2020 ◽  
Vol 17 (2) ◽  
pp. 79-91
Author(s):  
KN Islam ◽  
MMH Khan ◽  
MA Latif ◽  
MM Uddin ◽  
MM Islam
Keyword(s):  
Control Measure ◽  
Block Design ◽  
Maximum Yield ◽  
Effective Control ◽  
Cost Ratio ◽  
Marginal Benefit ◽  
Benefit Cost Ratio ◽  
Pod Borer ◽  
Legume Pod Borer ◽  
Benefit Cost

The experiment was conducted to find out effective control measure against thrips and pod borers of mungbean by various means, including chemicals, botanicals and biopesticide. The mungbean variety, BARI Mung-6 was grown in the field and six treatments viz., T1 [Azadirachtin (Bioneem plus 1EC)], T2 [Bacillus thuringiensis (Bt. powder)], T3 [Spinosad (Tracer 45SC)], T4 [Chlorpyrifos + Cypermethrin (Nitro 505EC)], T5 [Thiamethoxam + Chlorantraniliprole (Voliam flexi 300SC)] and T0 [Untreated control (water spray)] were set in randomized complete block design (RCBD) with three replications. The insecticidal treatment options showed significantly different performance against thrips (Megalurothrips distalis), gram pod borer (Helicoverpa armigera) and legume pod borer (Maruca vitrata) on mungbean. The lowest population of thrips, gram pod borer and legume pod borer was found in Voliam flexi 300SC treated plot which showed maximum percent reduction of these pests. The lowest percent pod infestation by pod borers observed by the same treatment. Bioneem plus showed the intermediate results considering all the parameters. The maximum yield (1254.50 kg ha-1) and the highest marginal benefit cost ratio (MBCR) (6.68) were obtained from Voliam flexi 300SC. Considering effectiveness and marginal benefit cost ratio, Voliam flexi 300SC was more effective among treatments for controlling thrips and pod borers of mungbean followed by Nitro 505EC. SAARC J. Agri., 17(2): 79-91 (2019)

Evaluation of Pearl millet varieties under rainfed region of eastern India

2018 ◽  
Vol 5 (04) ◽  
Author(s):  
MK SINGH ◽  
VINOD KUMAR
Keyword(s):  
Pearl Millet ◽  
Field Experiments ◽  
Sandy Loam ◽  
Block Design ◽  
Yield Potential ◽  
Research Station ◽  
Dry Matter Accumulation ◽  
Dry Land ◽  
Available N ◽  
Randomized Block Design

Field experiments were carried out at Dry land research station, KVK Munger during kharif seasons of 2013 and 2014 to evaluate the yield potential and economics of pearl millet varieties under the rainfed condition of sub-humid sub-tropical environment of South Bihar. The sandy-loam soil of the experimental field was low in organic carbon (0.26%), available N (182.5 kg ha-1), and available P2 O5 (19.5 kg ha-1) and medium in K2O (168.kg ha-1) content, having pH 6.8. Experiment was laid out in randomized block design and replicated thrice with nine pearl millet varieties viz. Pusa hybrid 1201, Pusa hybrid 1202, Pusa composit 443, Pusa composit 612, Proagro 9444, Proagro 9444 GOLD, Proagro 9330+, Proagro Tejas and Proagro 9450. The highest plant dry matter accumulation (126.68g plant-1) at harvest stage was noticed with hybrid 'Proagro 9444' which was atpar to 'Pusa hybrid 1201', 'Pusa hybrid 1202' and 'Proagro 9450'. Significantly higher grain yield (33.87 q ha-1) was in hybrid 'Proagro 9450' which was comparable to 'Proagro 9444' (32.09 q ha-1) and 'Pusa hybrid 1201' (30.67 q ha-1) but superior over other varieties. The significantly more net return (Rs 67815 ha-1) and B:C ratio(3.41) was with Proagro 9450 but at par to Proagro 9444.(Rs 66188 and 3.33)

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