scholarly journals UJI PERFORMANSI RICE TRANSPLANTER TIPE WALKING MODEL PF48 (2 ZS-4A) DI DESA TANJUNG KECAMATAN TANJUNG KABUPATEN LOMBOK UTARA-NTB

2017 ◽  
Vol 5 (2) ◽  
pp. 395-407
Author(s):  
Ni Luh Tri Dewi Lestari ◽  
Murad ◽  
Asih Priyati
Keyword(s):  
Rice Field ◽  
Field Research ◽  
Field Capacity ◽  
Effective Field ◽  
Land Condition ◽  
Effectiveness And Efficiency ◽  
The Government ◽  
Field Efficiency ◽  
Efficiency Data ◽  
Planting System

In order to improve the performance of workers and crops, especially rice, the government provides agricultural technology, in the form of rice transplanter machine, to groups of farmer in Tanjung Village, Tanjung Subdistrict, North Lombok Regency. Rice transplanter is a machine used to distribute the plant rice evenly. In this research, the performance of walking type rice transplanter machine PF48 (2 ZS-4A) model was carried out on rice field in Tanjung Village, Tanjung Subdistrict, North Lombok Regency, with the aim to conduct performance testand to determine effectiveness and efficiency of the rice transplanter machine, at various area of paddy fields andvarious planting systems. Method used was experimental by conducting on field research. Research parameters consist of land condition during planting, crops condition, planting line distance, number of clumps per hole, depth of planting, total planting time, tool speed, effective field capacity, theoretical field capacity, and field efficiency. Data analysis in this research were conducted from the measurement at the beginning of the operation of rice transplanter machine on different area, i.e. the smallest (400 m2), moderate (700 m2), and the biggest (1,000 m2), and using different planting system (elongated and shortened). In the terms of area, this study showed field efficiency on the largest plot (1,000 m2) is more efficient (83%) compared to other plots. Whereas field efficiency based on planting system showed that the elongated system is more efficient than shortened system. The field efficiency obtained on the elongated system is above 50%, i.e. 68% for the smallest area, 75% for moderate area, and 83% for the largest one. While the efficiency on the shortened system is 24% for the smallest area, 35% for moderate area, and 45% for the largest area.   Keywords: effectiveness, efficiency, rice transplanter, planting system, rice plan   ABSTRAK   Dalam meningkatkan kinerja pekerja dan hasil panen khususnya padi, pemerintah memberikan teknologi pertanian berupa mesin rice transplanter kepada kelompok tani di Desa Tanjung, Kecamatan Tanjung, Kabupaten Lombok Utara. Mesin rice transplanter merupakan mesin yang digunakan untuk menanam padi secara merata. Pada penelitian ini dilakukan uji performansi mesin rice transplanter tipe walking model PF48 (2 ZS-4A) pada lahan persawahan di Desa Tanjung Kecamatan Tanjung Kabupaten Lombok Utara dengan tujuan untuk melakukan uji performansi mesin rice transplanter serta mengetahui efektivitas dan efisiensi mesin rice transplanter terhadap berbagai luas petakan sawah dan sistem tanam. Metode yang digunakan adalah eksperimental dengan penelitian dilakukan dilapangan. Parameter penelitian dari kondisi lahan saat penanaman, keadaan hasil tanam, jarak baris tanam, jumlah rumpun per lubang, kedalaman tanam, total waktu tanam, kecepatan maju alat, kapasitas lapang efektif, kapasitas lapang teoritis dan efisiensi lapang. Analisis data pada penelitian ini adalah pengukuran dari awal pengoperasian mesin rice transplanter pada luasan yang berbeda, yaitu terkecil (400 m2), sedang (700 m2) dan terbesar (1.000 m2) serta penggunaan sistem tanam yang berbeda (memanjang dan memendek) pada setiap petakan. Pada penelitian ini, dari segi luasan, efisiensi lapang pada petakan terbesar (1.000 m2) lebih efisien (83%) dibandingkan dengan petakan lainnya. Sedangkan, efisiensi lapang berdasarkan sistem tanam lebih efisien dengan menggunakan sistem memanjang dibandingkan dengan sistem memendek. Di mana efisiensi lapang yang didapatkan pada sistem memanjang di atas 50%, yaitu 68% untuk luasan terkecil, 75% untuk luasan sedang, dan 83% untuk luasan terbesar. Sedangkan pada sistem memendek, didapatkan efisiensi 24% untuk luasan terkecil, 35% untuk luasan sedang dan 45% untuk luasan terbesar. Kata kunci: efektivitas, efisiensi, rice transplanter, sistem tanam, tanaman padi

scholarly journals UNJUK KERJA RICE TRANSPLANTER SISTEM JAJAR LEGOWO TIPE CROWN INDO JARWO DI KABUPATEN PINRANG SULAWESI SELATAN

2021 ◽  
Vol 10 (1) ◽  
pp. 113
Author(s):  
Iqbal Salim ◽  
Yoesrifar Jafar ◽  
Tahir Sapsal
Keyword(s):  
Descriptive Analysis ◽  
Field Capacity ◽  
Work Capacity ◽  
Effective Field ◽  
Rice Fields ◽  
Paddy Fields ◽  
Working Capacity ◽  
Farmer Groups ◽  
The Government ◽  
Field Efficiency

Rice transplanters have been used in Pinrang district since 2017. The machines are initially grant from the Government through the Ministry of Agriculture. The type of rice transplanters that is mostly found within farmer groups are the Crown Indo Jarwo type. This study aims to identify and determine the theoretical and field capacity of rice transplanter, as well as field efficiency of the machine. The method used in this research was field experimental and descriptive analysis. The research was conducted at three different speeds on 3 plots of rice fields with each size of 10 x 10 meters. The results showed that the rate of 1.52 km/hour was a good speed to use in paddy fields with a working capacity of 8.5 h/ha. The results obtained from the calculation of the theoretical field capacity were 0.14 ha/h or 7.14 h/ha. The effective field capacity was 0.12 ha/h or 8.33 h/ha with an efficiency of 86%. Keywords: field efficiency, rice, rice transplanter, work capacity

scholarly journals Development of an Integrated Tool for Small-scale Maize Farming in Uganda

2020 ◽  
Vol 5 (4) ◽  
pp. 520-526
Author(s):  
Juma Louis Mahd Obura ◽  
Robert Kyeyune Kambugu ◽  
Nicholas Kiggundu ◽  
Hussein Kivumbi Balimunsi ◽  
Samuel Kyamanywa
Keyword(s):  
Single Unit ◽  
Field Capacity ◽  
Effective Field ◽  
Appropriate Technology ◽  
Small Scale ◽  
Technical Feasibility ◽  
Seed Damage ◽  
Mouldboard Plough ◽  
Effectiveness And Efficiency ◽  
Field Efficiency

About 62% of the maize produced in developing countries is cultivated manually owing to limited access to appropriate technology. Available technologies perform a single operation, necessitating farmers to buy multiple implements, which is expensive. In this study, an ox-drawn tool integrating a plough, planter and cultivator for small-scale maize farming was developed and its performance evaluated. Planting and cultivating units were designed and fabricated for assembly onto an existing standard ox-plough beam. The integrated tool was tested in the field to assess the effectiveness and efficiency of cultivation and planting of maize. Results showed that the planting unit had an average seed rate of 35.4 kg ha-1 with a seed damage of 4% and an effective field capacity of 0.15 ha h-1 at a field efficiency of 87.3%. The cultivating unit had an effective field capacity of 0.1 ha h-1 and a weeding efficiency of 86%. The efficiency, effectiveness and reliability for field operations are superior to manual operations currently used by farmers and are comparable to single-unit prototypes developed in other countries. This demonstrates the technical feasibility of integrating planting and cultivation units onto an existing mouldboard plough instead of buying multiple tools.

scholarly journals Evaluating the Suitability of a Combine Harvester Equipped with the Sunflower Header to Harvest Cardoon Seeds: A Case Study in Central Italy

Agronomy ◽  
2020 ◽  
Vol 10 (12) ◽  
pp. 1981
Author(s):  
Francesco Latterini ◽  
Walter Stefanoni ◽  
Simone Sebastiano ◽  
Gian Maria Baldi ◽  
Luigi Pari
Keyword(s):  
Value Chain ◽  
Central Italy ◽  
Field Capacity ◽  
Field Trials ◽  
Effective Field ◽  
Seed Loss ◽  
Combine Harvester ◽  
Field Efficiency ◽  
Available Technology ◽  
Harvesting Stage

Cardoon seeds have been proved to thrive in the Mediterranean region, even under low input management and its biomass is suitable for several food and industrial uses. Despite that, a proper value chain has not been set properly and uncertainty still lays among producers and industries, particularly concerning the harvesting stage. The present study supports, via field trials, the hypothesis that cardoon seeds can be harvested using a conventional combine harvester equipped with the sunflower header. Theoretical field capacity (TFC), effective field capacity (EFC), and field efficiency (FE) were 2.36 ha h−1, 2.05 ha h−1, and 1.82 Mg h−1, respectively, while harvesting costs were calculated as 69.52 € ha−1. Seed loss was only 3.2% w/w of the potential seed yield. The machinery’s performance, costs, and seed loss are comparable with sunflower harvesting, underlying the possibility to use the available technology directly to harvest cardoon seeds.

scholarly journals DESEMPENHO OPERACIONAL NA SEMEADURA DO MILHO SAFRINHA EM SISTEMA DE SEMEADURA DIRETA

2021 ◽  
Vol 36 (1) ◽  
pp. 1-9
Author(s):  
Márcia de Almeida Carneiro ◽  
Felipe Adolfo Litter ◽  
Francielle Morelli Ferreira ◽  
Franciele Morlin Carneiro ◽  
Leonardo Luiz Oss
Keyword(s):  
Climatic Factors ◽  
Field Capacity ◽  
Effective Field ◽  
Operational Performance ◽  
Mato Grosso ◽  
Different Shapes ◽  
Field Efficiency ◽  
E Mail ◽  
Direct Sowing

DESEMPENHO OPERACIONAL NA SEMEADURA DO MILHO SAFRINHA EM SISTEMA DE SEMEADURA DIRETA   MÁRCIA DE ALMEIDA CARNEIRO1, FELIPE ADOLFO LITTER1, FRANCIELLE MORELLI FERREIRA2,3,  FRANCIELE MORLIN CARNEIRO3, LEONARDO LUIZ OSS1   1Faculdade de Ciências Agrárias e Biológicas, Universidade do Estado de Mato Grosso, Campus Universitário de Alta Floresta (Av. Perimetral Rogério Silva, Norte-2, Cep 78580-000, Alta Floresta - MT, Brasil), e-mails: [email protected], [email protected] , [email protected] 2Faculdade de Ciências Sociais, Aplicadas e Agrárias, Universidade do Estado de Mato Grosso, Campus Universitário de Nova Mutum (Av. das Garças, N° 1192 N, Jd. das Orquídeas, Cep: 78450-000, Nova Mutum - MT, Brasil), e-mail: [email protected] 3Departamento de Engenharia Rural, Faculdade de Ciências Agrárias e Veterinárias, Universidade Estadual Paulista, Via de Acesso Prof. Paulo Donato Castellane, s/n, Vila Industrial, Cep 14884-900, Jaboticabal - SP, Brasil), e-mail: [email protected] .   RESUMO: A semeadura do milho está sujeita a fatores que podem interferir na qualidade da operação, principalmente fatores climáticos que afetam diretamente a colheita da soja e consequentemente a semeadura do milho, portanto é necessário que ambas as operações sejam eficientes, garantindo o sucesso da produção agrícola. Diante ao exposto, objetivou-se avaliar o desempenho operacional na semeadura de milho safrinha na Fazenda Chopim em Novo Mundo – MT.  Foram realizadas avaliações em três dias de semeadura em talhões de formatos distintos, um com formato trapezoidal e outro com formato irregular, ambos com topografia levemente inclinada. Foram coletados os tempos produtivos, de interrupções e o de preparo, além da distância percorrida. Para a condução do ensaio foi utilizado um trator BH180, marca Valtra, ano 2008 e uma semeadora da Tatu Marchesan, modelo Ultra Flex, de 28 linhas. Foram avaliadas a capacidade de campo teórica, efetiva, operacional e a eficiência de campo. O desempenho operacional do conjunto da Fazenda Chopim apresentou média de capacidade de campo efetiva igual a capacidade de campo teórica (12 ha h-1). A semeadura na Fazenda Chopim foi considerada eficiente, pois apresentou valores médios (65,66 %) dentro dos valores considerados eficientes pela literatura (50-75%).   Palavras-chave: eficiência, mecanização, conjunto trator-semeadora.   OPERATIONAL PERFORMANCE IN THE CORN SOWING IN THE DIRECT SOWING SYSTEM   ABSTRACT: The corn sowing is subject to factors that may affect the quality of the operation, mainly climatic factors that directly affect the soybean harvest and consequently the corn sowing, so it is necessary that both operations are efficient, ensuring the success of agricultural production. Faced with the above, aimed to evaluate the operating performance in sowing winter corn in Fazenda Chopim in Novo Mundo – MT. Evaluations were conducted in three days of sowing in plots of different shapes, one with a trapezoidal shape and the other with irregular shape, both with slightly inclined topography. The productive, interruption and preparation times were collected, in addition to the distance covered. A BH180 tractor, Valtra, 2008 and a Tatu Marchesan seeder, Ultra Flex model, 28 rows, was used to conduct the test. Theoretical, effective, operational field capacity and field efficiency was evaluated. The operational performance of the Fazenda Chopim set showed an average effective field capacity equal to the theoretical field capacity (12 ha h-1). Sowing at Fazenda Chopim was considered efficient, as it presented average values (65.66%) within the values considered efficient by the literature (50-75%).   Keywords: efficiency, mechanization, tractor-Seeder Set.

scholarly journals Calibration and Performance Evaluation of Grain Corn Fertilizing Implement

2021 ◽  
Author(s):  
Rohazrin Abdul Rani ◽  
Adli Fikri Ahmad Sayuti ◽  
Mohd Khusairy Khadzir ◽  
Muhammad Haniff Ahmad
Keyword(s):  
Field Capacity ◽  
Application Rate ◽  
Effective Field ◽  
Corn Production ◽  
Speed Up ◽  
Field Efficiency ◽  
And Performance ◽  
The Times ◽  
The Right ◽  
Farm Design

Fertilisation in grain corn production is an important stage that must be done properly in terms of the amount of fertiliser used to reduce wastage and ensure crop growth. A fertilising implement brand Gasprado, was calibrated and evaluated for its performance to apply urea to grain corn crops at MARDI Seberang Perai, Pulau Pinang. Calibration was conducted to set the right metering for the device's opening to drop  urea that  meets the application rate of 130kg/ha. This was done by measuring the amount of urea dropped for a particular setting and distance. The machine has four metering devices which were labelled as MD1, MD2, MD3 and MD4. Additionally, the fertiliser applicator also comes with spring tine cultivating devices. The implement was tested for fertilising 56 rows of grain corn in the distance of 62 m long. The times taken for the tractor to finish four rows per run along the 62-m distance and to turn at the headland were recorded to evaluate the performance. The implement's metering devices MD1, MD2, MD3 and MD4 were calibrated at setting scales of B-1.5, B-0, B-0 and B-0, respectively that gave the urea application rate of 133 kg/ha, which was the nearest rate to the recommendation. The average working speed of the operation was at 4.08 km/h with the theoretical field capacity to be at 1.224 ha/h. Meanwhile, the machine's effective field capacity was 0.5208 ha/h, which had a field efficiency of 42.5 % for the particular farm design. The use of machine can speed up the operation of applying fertiliser to the grain corn crop but the performance is dependent on the farm layout.

scholarly journals Performance evaluation of a pull type two rows granular urea applicator

2014 ◽  
Vol 12 (1) ◽  
pp. 211-220
Author(s):  
M Alam ◽  
TR Sarker ◽  
TA Orin
Keyword(s):  
Average Distance ◽  
Low Cost ◽  
Field Capacity ◽  
Application Rate ◽  
Effective Field ◽  
Manufacturing Cost ◽  
Deep Placement ◽  
Human Stress ◽  
Field Efficiency ◽  
Pulling Force

Deep placement of super granular urea is very laborious and time consuming work for manually operation. To overcome the human stress and drudgery to place the super granular urea, a low cost manually operated pull type 2- rows granular urea applicator (GUA) was designed and developed in the department of Farm Power and Machinery, Bangladesh Agricultural University, Mymensingh. The performance of machine was done in agronomy field of Bangladesh Agricultural University. The effective field capacity was 0.11 ha/hr at a forward speed of 1.78 km/hr and 78.89 % field efficiency of developed granular urea applicator. The average distance between two dropped granular urea (GU) from left hopper & right hopper were 40.64 cm and 40.89 cm respectively. The average missing rate of GU dropped during field operation was 1.65% for granular urea size of 2.83 gm. The depth of granular urea placement was 7-10 cm in puddle field. The pulling force and draft of the developed applicator were varied between 5-11 kg and 3-6.62 kg respectively. The draft power was 0.027 kW for 55.38 N pulling force at 1.78 km/hr speed. The application rate of the GUA was 170 kg/ha. The results of field and laboratory test of the developed applicator were better in comparison to other models of GUA. The operational cost of the applicator is 390 Tk/ha which is lower than 22.16% of BARI made push type GUA and 53% lower than the manually placement of GU. Average grain yield was highest (5234 kg/ha) when granular urea were applied by the developed applicator and followed by GU applied by BRRI made push type GUA (5213 kg/ha) and GU applied by manually (5209 kg/ha). The highest straw yield (6787 kg/ha) was obtained when GU applied by manually. However the differences of grain yields and straw yields were not significantly difference for applying GU by the applicators and manually operation. The manufacturing cost of the applicator is only Tk.6000. The weight and the drawbar power of the applicator were 15 kg and 0.03 kW respectively. Therefore one person (man or women) is enough to pull the machine. Overall performance of the applicator was found quite satisfactory. For this reason, the applicator may be introduced in Bangladesh to apply super granular urea. DOI: http://dx.doi.org/10.3329/jbau.v12i1.21414 J. Bangladesh Agril. Univ. 12(1): 211-220, June 2014

scholarly journals Development of a pull-type onion (Allium cepa L.) sowing machine for seedbed

2020 ◽  
Vol 187 ◽  
pp. 05001
Author(s):  
Jessa Austria ◽  
Romeo Gavino ◽  
Helen Gavino ◽  
Marvin Cinense
Keyword(s):  
Field Capacity ◽  
Labor Cost ◽  
Effective Field ◽  
Delivery Rate ◽  
Allium Cepa L ◽  
Production Area ◽  
Field Efficiency ◽  
Sowing Machine ◽  
The Cost ◽  
Seeding Efficiency

The conventional sowing method of onion seeds offers great wastage and laborious. This study aimed to develop a pull-type onion sowing machine for seedbed to optimize the sowing of seeds, reduce labor cost, yields better quality onion seedlings, and increases income of onion farmers. The machine was tested and evaluated, in comparison with manual sowing of onion seeds, in terms of seed delivery rate, effective field capacity, field efficiency, seeding efficiency and drawbar power. The cost of sowing seeds using the machine was also determined. Results indicated that machine’s delivery rate was significantly reduced to 5.33 g/m2 from 11.35 g/m2 This resulted to reduction in the quantity of seeds sown for a one-hectare onion production area by about 4-5 cams (1.6 to 2 kg). Machine’s field capacity (375.45 m2/h) was higher than of manual sowing (25.51 m2/h). Field efficiency at 86.94% is higher than 60% threshold given by PAES [3]. The seeding efficiency of 89.70% was statistically the same with three seeds per 25 mm hill spacing. The drawbar power was found out to be 0.15 5kW. The cost of the machine is $1,666.67 with a break-even quantity of 9,226.9 m2 or 138.11 cans of onion seeds in 0.62 years.

Performance Evaluation of Tractor Operated Garlic (Allium sativum L.) Clove Planter

2021 ◽  
Vol 58 (1) ◽  
pp. 1-14
Author(s):  
Shubham Zilpilwar ◽  
Keyword(s):  
Allium Sativum ◽  
Field Tests ◽  
Field Capacity ◽  
Effective Field ◽  
Wheel Slip ◽  
Seed Spacing ◽  
Seed Placement ◽  
Field Efficiency ◽  
The Cost

Garlic (Allium sativum L.) is an important foreign exchange earner for India. The farmers generally plant garlic by manual method, which is labour intensive and time consuming. A tractor-operated garlic clove planter was developed and evaluated for its performance in the field. The average wheel slip, draft and average depth of seed placement by the developed planter were 6.93 %, 289.83 kg, and 42.1 mm, respectively. The average seed spacing, miss index, multiple index, quality of feed index, seed rate and seed metering efficiency for GG-4 and GG-5 garlic varieties were 99.4 mm, 6.12 %, 7.91 %, 85.96 %, 377 kg.ha-1; and 96.35 % and 99.9 mm, 4.58 %, 6.07 %, 89.34 %, 443 kg.ha-1, and 96.75 %, respectively during field tests. The effective field capacity and field efficiency of the developed planter were 0.33 ha.h-1 and 80.33; 0.32 ha.h-1 and 79.02 %, respectively, for GG-4 and GG-5 garlic seeds. The cost of planting by the developed planter with operational cost of tractor was ` 553.63 per hour (` 1677.67 per ha), and was less as compared to available planting machineries for garlic.

scholarly journals Development and Performance Evaluation of Groundnut Digger Elevator cum Heap Formater

2020 ◽  
Vol 4 (5) ◽  
Author(s):  
Rajvir Yadav
Keyword(s):  
Field Capacity ◽  
Effective Field ◽  
Depth Of Cut ◽  
Oilseed Crop ◽  
Total Production ◽  
Forward Speed ◽  
Total Quality ◽  
Power Requirement ◽  
Field Efficiency ◽  
And Performance

Groundnut (Archis hypogaea L) or peanut is a major oilseed crop which contributes 40 per cent of the total area and 30 per cent of total production of oilseed crops. In India among the major groundnut growing states, Gujarat is the most important one accounting for 36 % of the total area. The groundnut digger elevator cum heap formater was developed considering various theories related to digger, elevator and heap formater assembly, agronomical parameters of groundnut, functional requirement and general consideration. The main components such as main frame, digging blade, elevator and heap assembly were developed. The developed groundnut digger elevator cum heap formater was able to dig up the groundnut plants with pods and convey them for removing the soil from pods and making heap. The experimental results showed the depth of cut of groundnut digger elevator cum heap assembly was found as 13.00 cm, while width of coverage measure as 60 cm and moisture content (d.b.) of 19.20%. The draft requirement of 235 kgf and power requirement was calculated 7.83 hp with fuel requirement of 2.04 l/h. The theoretical field capacity of digger elevator cum heap formater was 0.12 ha/h while effective field capacity was 0.0935 ha/h with field efficiency of 80.47 %. The digging efficiency were found as 84.18, 85.23 and 86.36 % at the forward speed of 1.5, 2.0 and 2.5 km/h respectively. The total quality of pod was found 176.41, 180.21 and 173.91 gm and pod damage percentage was found 4.37, 4.36 and 4.73 % at forward speed of 1.5, 2.0, 2.5 km/h. The cost of harvesting by developed digger cum heap formater was found to be ₹ 371.98 /h.

scholarly journals Performance evaluation of modified BAU self-propelled reaper for paddy

2018 ◽  
Vol 16 (2) ◽  
pp. 171-177 ◽  
Author(s):  
Md Mahamudun Noby ◽  
Md Kamrul Hasan ◽  
Md Rostom Ali ◽  
Chayan Kumer Saha ◽  
Md Monjurul Alam ◽  
...  
Keyword(s):  
Performance Evaluation ◽  
Field Experiments ◽  
Field Capacity ◽  
Effective Field ◽  
Cost Ratio ◽  
Benefit Cost Ratio ◽  
Agrarian Economy ◽  
Field Efficiency ◽  
Benefit Cost ◽  
Better Than

Bangladesh has an agrarian economy in which paddy is the dominant crop. A significant amount of field losses of paddy occurs every year due to natural calamities and a shortage of time during the harvesting period. During this study, a modification was done on locally developed BAU self-propelled reaper and its performance was compared with manual harvesting system of paddy. Several experiments were conducted in Boro paddy (April–May 2017) and Aman paddy harvesting (November–December 2017) at BAU farm of Bangladesh Agricultural University after necessary modification works in the workshop. An experiment was also conducted on Aman paddy in 2017 at BAU farm for determining manual harvesting cost. The technical and economic performances of the modified BAU self-propelled reaper were determined based on the field experiments. Results reveal that average fuel consumption, effective field capacity and field efficiency were 2.71 L/ha, 0.255 ha/h and 77.27%, respectively for the modified BAU self-propelled reaper and 2.88 L/ha, 0.25 ha/h and 75.76%, respectively for the existing BAU self-propelled reaper. These results indicated that field performances of modified BAU self-propelled reaper were better than that of the existing BAU reaper. Paddy harvesting cost was found 916 Tk/ha for modified BAU self-propelled reaper and 9200 Tk/ha for manual harvesting system. The benefit-cost ratio of the modified BAU self-propelled reaper was 2.18. Considering the technical and economic performances, modified BAU self-propelled reaper was found suitable than the existing BAU reaper.  So, the modified BAU self-propelled reaper may be introduced in Bangladesh in the commercial basis.J. Bangladesh Agril. Univ. 16(2): 171-177, August 2018

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