scholarly journals Field performance of BARI urea super granule applicator

2016 ◽  
Vol 41 (1) ◽  
pp. 103-113
Author(s):  
MA Hoque ◽  
MR Karim ◽  
MS Miah ◽  
MA Rahman ◽  
MM Rahman
Keyword(s):  
Field Test ◽  
Field Performance ◽  
Field Capacity ◽  
Payback Period ◽  
Average Field ◽  
Net Income ◽  
Prilled Urea ◽  
Similar Yield

Field performance of BARI Urea Super Granule (USG) applicator was evaluated on BARI research stations (Gazipur, Pabna, and Barisal) and farmer’s field (Pabna, Barisal, Magura,Narshingdi,Jhenadah, Sirajgang, Rajbari and Jhalkathi) during the boro season of 2012-13. The applicator was tested with four treatments- application of USG by hand (165 kg/ha), application of USG by BARI USG applicator (165 kg/ha), application of prilled urea at USG rate (165 kg/ha) and application of prilled urea at farmers practice. In the farmer’s field, USG applicators were evaluated with the traditional broadcasting of granular urea. Similar yield of rice was obtained from machine and hand application of USG in all locations. Higher yield of rice was obtained from USG than granular urea. During field test, average field capacity and efficiency of the applicator were 0.138 ha/h and 81%, respectively. Considering custom hiring, the net income per year was Tk. 71750 and the payback period was 3 days. The price of the applicator is Tk. 3500.Bangladesh J. Agril. Res. 41(1): 103-113, March 2016

scholarly journals Field Performance Evaluation of Push Type Prilled Urea Applicator in Rice Cultivation

2016 ◽  
Vol 19 (2) ◽  
pp. 71-81 ◽  
Author(s):  
AKM Saiful Islam ◽  
MA Rahman ◽  
AKM Lutfor Rahman ◽  
MT Islam ◽  
MI Rahman
Keyword(s):  
Grain Yield ◽  
Block Design ◽  
Field Performance ◽  
Field Capacity ◽  
Rice Cultivation ◽  
Recommended Dose ◽  
Deep Placement ◽  
Urea Fertilizer ◽  
Ecological Zones ◽  
Prilled Urea

CORRECTION: Due to a number of formatting and layout issues, the PDF of this paper was replaced on 10th October 2016. The page numbers of this article have changed from 68-78 to 71-81.BRRI prilled urea applicator was designed and developed to facilitate deep placement of regular urea. Experiments were conducted to evaluate the performance of BRRI prilled urea applicator in the farmers’ fields at Gosaidanga in Shailkupaupazila under Jhenaidah district and at Rashidpur in Mithapukurupazila under Rangpur district during Boro 2015 season. Three treatments: hand broadcasting of urea (recommended dose) (HB), BRRI prilled urea applicator (70% of the recommended dose) (PUA) and BRRI USG applicator (70% of the recommended dose) (USGA) were compared in the experiments. The experiment was laid out in randomized complete block design (RCBD) and replicated in four farmers’ plots in each location using BRRI dhan28 as test crop both the locations. Prior to field experiment, prilled urea applicator was calibrated and urea dispensed was set to 14 gm in one revolution of drive wheel for Boro season. The field capacity of the PUA and USGA was almost similar (0.09-0.10 ha hr-1) in both the locations. Field efficiency of PUA and USGA had 64-65 and 68-69 percent, respectively. PUA and USGA saved 29-32 percent urea fertilizer compared to HB whereas labour requirement of HB (3.74-4.04 man-hr ha-1) in three splits showed similar to single application of urea by PUA (3.68-4.00 man-hr ha-1) and USGA (3.78-3.97 man-hr ha-1). Urea application cost in HB, PUA and USGA was Tk 4,624, 3,216-3,424 and 3,305-3,483 per hectare in both the locations. Prilled urea application method reduced the production cost. Urea application methods showed insignificant effect on grain yield. BRRI prilled urea safely dispensed urea fertilizer in subsurface, increased the efficacy of urea fertilizer and saved urea fertilizer without sacrificing grain yield. BRRI prilled urea applicator could be a viable technology in rice cultivation. Extensive dissemination works should be undertaken in different agro-ecological zones for wide spread adoption of the applicator.Bangladesh Rice j. 2015, 19(2): 71-81

Design and Field Test of a New Compact Self-Propelled Cabbage Harvester

2019 ◽  
Vol 62 (5) ◽  
pp. 1243-1250 ◽  
Author(s):  
Dongdong Du ◽  
Jun Wang ◽  
Luxin Xie ◽  
Fanfei Deng
Keyword(s):  
Field Test ◽  
Field Tests ◽  
Field Performance ◽  
Performance Tests ◽  
Cultivation Method ◽  
Compact Field ◽  
Cutting Rate ◽  
Traditional Fields ◽  
Mechanical Harvester

Abstract. As a labor-intensive operation, manual harvesting greatly affects cost and therefore profitability in the cabbage industry. A new compact self-propelled cabbage harvester for small, separate fields was designed and field tested. This harvester included a crawler chassis, a picking mechanism, a lifting mechanism, a cutting device, and a leaf separator. Results of preliminary field tests showed that the harvester had good flexibility and maneuverability. Results of field performance tests showed that the harvester could pick cabbages with diameters of 15 to 25 cm, providing a harvesting capacity of 0.21 hm2 h-1 and a harvest loss of 10.2%. Compared with experiments conducted in traditional fields, harvest quality showed an improvement in fields with an experimental cultivation method. The harvest loss was reduced by 5.0%, while the picking rate and accurate cutting rate were improved by 3.0% and 5.4%, respectively. Keywords: Cabbage, Compact, Field test, Mechanical harvester, Self-propelled.

scholarly journals In-Field Performance of Biomass Balers

2020 ◽  
Vol 2 (4) ◽  
pp. 568-580
Author(s):  
Robert “Bobby” Grisso ◽  
Erin G. Webb ◽  
John S. Cundiff
Keyword(s):  
Field Data ◽  
Field Performance ◽  
Field Capacity ◽  
Maximum Throughput ◽  
Machine Performance ◽  
Time Motion ◽  
Management Concepts ◽  
Global Positioning ◽  
Motion Studies ◽  
The Relationship

Herbaceous biomass will contribute significantly to meeting renewable energy goals. Harvesting equipment for hay is generally suitable for mowing, raking, and baling grasses such as switchgrass; however, there is a need for field data to better understand machine performance in energy crops. The purpose of this study was to collect field data to estimate baler field capacity, throughput, and speed. Data gathered with a Differential Global Positioning System (DGPS) unit during baling provided time-motion studies of baler productivity. Six fields were used to compare field capacity, speed, and throughput results from four round balers and one large-square baler. The results show that in-field performance of round balers is significantly affected by yield, but that the relationship can be represented with machinery management concepts, knowledge of maximum throughput, and wrap-eject time. Baler performance will be overestimated if the yield, maximum throughput, and wrap-eject time are not correctly accounted for.

On Test Uncertainties in Field Performance Tests

2015 ◽  
Author(s):  
Rainer Kurz ◽  
Klaus Brun
Keyword(s):  
Measurement Uncertainty ◽  
Gas Turbine ◽  
Field Test ◽  
Measurement Errors ◽  
Equations Of State ◽  
Accurate Determination ◽  
Field Performance ◽  
Significant Implication ◽  
Test Results

Field testing of gas turbine or electric motor driven compressor packages requires the accurate determination of efficiency, capacity, head, or power consumption in sometimes less than ideal working environments. Nonetheless, field test results have significant implication for the compressor and gas turbine manufacturers and their customers. Economic considerations demand that the performance and efficiency of an installation are verified to assure the return on investment for the project. Thus, for the compressor and gas turbine manufacturers, as well as for the end-user, an accurate determination of the field performance is of vital interest. This paper discusses a method to determine the measurement uncertainty and, thus, the accuracy, of test results under the typical constraints of a site performance test, for compressors capable of variable speed operation. Namely, a method is presented which can be employed to verify the validity of field test performance results. Results are compared with actual field test results, using redundant methods. Typical field test measurement uncertainties are presented for different sets of instrumentation. The effect of different equations of state on the calculated performance is also discussed. Test parameters that correlate to the most significant influence on the performance uncertainties are identified and suggestions are provided on how to minimize their measurement errors. Results show that compressor efficiency uncertainties can be unacceptably high when some basic rules for accurate testing are violated. However, by following some simple measurement rules and maintaining commonality of the gas equations of state, the overall compressor package performance measurement uncertainty can be limited and meaningful results can be achieved.

scholarly journals Energetics and Cost Economics of Laying Plastic Mulch in Vegetable Cultivation

2020 ◽  
pp. 20-25
Author(s):  
. Omprabha ◽  
V. M. Victor ◽  
A. K. Chandraker ◽  
Nawang Palden Bhutia
Keyword(s):  
Traditional Method ◽  
Energy Requirement ◽  
Field Capacity ◽  
Field Trials ◽  
Average Field ◽  
Plastic Mulch ◽  
Agricultural Engineering ◽  
Plastic Mulching ◽  
Black Plastic ◽  
Field Efficiency

The use of plastic mulch in agriculture is increasing day by day due for increasing crop yield. Mulch film are available in different types but plastic mulching requires less efforts. This paper highlights a new developed mulch laying machine for spreading of polyethylene black plastic mulch on soil. Animal drawn plastic mulch laying machine was developed at the SV College of Agricultural Engineering and Technology, IGKV, Raipur and was evaluated for its performance by conducting field trials. The average field capacity and average field efficiency was found to be 0.115 ha/h and 71% respectively. The average speed of operation was found 1.35 km/h for developed machine and 0.226 km/h for traditional method of mulch laying. The cost of operation was found to be Rs.1343/ha. Energy requirement of developed machine in mulch laying operation was found 187.34 MJ/ha it was found very less than the energy requirement 754.60 MJ/ha of traditional method of mulch laying. This machine will avoid the wages of labours used for laying plastic mulch and covers the plastic mulch with the soil on its either side edges. Using the mechanical system, the accuracy and ease during plastic laying was achieved.

scholarly journals Performance evaluation of different weeders in cotton

2020 ◽  
Vol 13 (2) ◽  
pp. 227-236
Author(s):  
Aman Mor ◽  
N.K. Bansal ◽  
Parveen ◽  
Nitin Karwasra ◽  
Sushil Kumar
Keyword(s):  
Field Capacity ◽  
Payback Period ◽  
Yield Data ◽  
Time Saving ◽  
Cotton Crop ◽  
Machine Performance ◽  
Labour Requirement ◽  
Efficient Machine ◽  
Three Stages ◽  
Time Of Harvest

The present study was carried out to predict the performance different type’s weeder in cotton crop so that efficient machine can be selected by farmer. The crop and machine performance parameter were recorded at three stages of cotton crop i.e. pre-square, square and flowering. The soil resistance was recorded before, just after weeding (3rd stage) and at the time of harvest. Yield data (g/plant) was recorded under all the treatments taken in both varieties. The weeding efficiency of different weeder was found between 74 to 89 per cent. The field capacity of tractor operated inter row rotary weeder was in the range of 0.54 to 0.59 ha/h whereas it was 0.8 ha/ h in tractor operated high clearance cultivator, 0.16 ha/h with engine operated power weeder and 0.05 ha/h with manual hand hoe. The per cent saving in cost of operation with mechanical weeder over manual hand hoe was in the range of 80 to 93. The B:C ratio of mechanical weeder selected for study was in the range of 1.57 to 4.4 and payback period was in the range of 0.44 to 1.7 years. Time saving over manual hand hoe in weeding operation with the use of tractor operated weeder was 90 to 93 per cent whereas in engine operated weeder it was 68.7 per cent over manual hand hoe. The per cent saving in labour requirement with the use of mechanical weeder was in the range of 96 to 99 per cent over manual hand hoe. From result obtained from the study tractor operated weeder (operating width= 1500mm) was found suitable for cotton crop.

scholarly journals Development and Performance Evaluation of a Hand-Pushed Tiger Nut Harvester

2021 ◽  
Vol 3 (2) ◽  
Author(s):  
A Saleh
Keyword(s):  
Agricultural Research ◽  
Field Capacity ◽  
Galvanized Steel ◽  
Average Field ◽  
Operating Speed ◽  
Materials Selection ◽  
Harvesting Method ◽  
Selection For ◽  
Field Efficiency ◽  
And Performance

Harvesting is one of the major problems encountered by tiger nut farmers in Nigeria. Manual harvesting system is the most commonly used method. This process is costly, labour intensive and time-consuming. The process does not also give farmers adequate returns to enable them to break even due to huge losses encountered. The objective of this study was to design, construct and evaluate a hand-pushed harvester that would eliminate the challenges being faced by small and medium tiger nut farmers during harvesting. Materials selection for constructing the harvester were based on their durability and availability, affordability and ease of replacement if damaged. They include mild steel (3 mm, 5 mm), 30 mm galvanized steel hollow pipe, 10 mm diameter steel rod, and 400 mm steel tyre. The developed harvester was evaluated at the experimental farm of the Institute for Agricultural Research (IAR). Results of the study show that the average field capacity ranges from 0.28 – 0.33 ha/h while the average field efficiency was between 77.78 – 80.49% depending on operating speed, moisture content and other properties of the soil. No field damage was recorded when the harvester was used as against an approximate 10.50% damage recorded in the manual harvesting method.

scholarly journals Severity assessment in mice subjected to carbon tetrachloride

2020 ◽  
Vol 10 (1) ◽  
Author(s):  
Lisa Ernst ◽  
Leonie Zieglowski ◽  
Mareike Schulz ◽  
Michaela Moss ◽  
Marco Meyer ◽  
...  
Keyword(s):  
Carbon Tetrachloride ◽  
Open Field ◽  
Field Test ◽  
Open Field Test ◽  
Field Performance ◽  
Principal Component ◽  
Laboratory Animals ◽  
Severity Assessment ◽  
Behavioral Tests ◽  
Significant Group

Abstract The Directive 2010/63 EU requires classifying burden and severity in all procedures using laboratory animals. This study evaluated the severity of liver fibrosis induction by intraperitoneal carbon tetrachloride (CCl4) injections in mice. 29 male C57BL/6N mice were treated three times per week for 4 weeks with an intraperitoneal injection (50 µl) of either 0.6 ml/kg body weight CCl4-vehicle solution, germ oil (vehicle-control) or handling only. Severity assessment was performed using serum analysis, behavioral tests (open field test, rotarod, burrowing and nesting behavior), fecal corticosterone metabolite (FCM) measurement, and survival. The most significant group differences were noticed in the second week of treatment when the highest AST (1463 ± 1404 vs. 123.8 ± 93 U/L, p < 0.0001) and nesting values were measured. In addition, respective animals showed lower moving distances (4622 ± 1577 vs. 6157 ± 2060 cm, p < 0.01) and velocity in the Open field, identified as main factors in principal component analysis (PCA). Overall, a 50% survival rate was observed within the treatment group, in which the open field performance was a good tracer parameter for survival. In summary, this study demonstrates the feasibility of assessing severity in mice using behavioral tests and highlight the open field test as a possible threshold parameter for risk assessment of mortality.

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