scholarly journals Comparative evaluation of mechanised and manual threshing options for Amankwatia and AGRA rice varieties in Ghana

2017 ◽  
Vol 48 ◽  
Author(s):  
Shadrack Kwadwo Amponsah ◽  
Ahmad Addo ◽  
Komla Dzisi ◽  
Jean Moreira ◽  
Sali Atanga Ndindeng
Keyword(s):  
Moisture Content ◽  
Feed Rate ◽  
Energy Demand ◽  
Energy Requirement ◽  
Rice Variety ◽  
Cleaning Efficiency ◽  
Rice Varieties ◽  
Physical Energy ◽  
Grain Moisture ◽  
Significant Difference

Performance of a Yanmar DB 1000 mechanised paddy thresher was comparatively assessed against manual threshing by impact method using a locally-made wooden box for Amankwatia and AGRA rice varieties under farmer’s field conditions at Nobewam in the Ashanti Region of Ghana. The mechanised thresher was evaluated at various threshing drum speeds (550 rpm, 600 rpm and 650 rpm) and feeding rates (200 kgh-1, 400 kgh-1 and 600 kgh-1). Results showed that threshing was satisfactory at grain moisture content between 16.9% w.b and 18.0% w.b. for both rice varieties. Threshing efficiency increased from 94.6% to 95.8% with no significant difference observed whereas cleaning efficiency decreased significantly from 84.2 % to 81.6 % with increasing feed rate irrespective of rice variety. Again, threshing efficiency increased with increasing drum rotational speed, irrespective of feed rate and rice variety. Percentage broken grain and grain loss both increased with increasing peripheral drum speed and paddy feed rate irrespective of rice variety. Average fuel consumption, physical energy requirement and threshing capacity increased significantly with increasing drum speed and feed rate. Crop moisture content and shattering ability influenced the threshing efficiency, threshing capacity, grain loss, broken grain, fuel and physical energy requirement at threshing. AGRA rice variety generally performed better than Amankwatia under both mechanical and manually threshing methods. Mechanised threshing was significantly better at reducing grain loss and physical energy demand whilst yielding over 200% higher threshing capacity than manual threshing by impact using the wooden box. Mechanised threshing was financially rewarding, yielding over 500% higher profit margin than the manual threshing option. Further research on optimum crop moisture content for improved threshing of different rice varieties is suggested.

scholarly journals Performance Evaluation of a Rice (Oryza sativa) Thresher

2021 ◽  
Vol 6 (3) ◽  
Author(s):  
Sarafadeen K Shittu ◽  
Nnaemeka M Ezeh
Keyword(s):  
Moisture Content ◽  
Feed Rate ◽  
Teaching And Learning ◽  
Mechanical Damage ◽  
Performance Indices ◽  
Cleaning Efficiency ◽  
Rice Varieties ◽  
Mean Values ◽  
Output Capacity ◽  
Randomized Design

A paddy thresher supplied to the Department of Agricultural and Environmental Engineering, Bayero University, Kano Nigeria as part of its takeoff equipment for teaching and learning was evaluated to determine its performance indices in terms of threshing efficiency, cleaning efficiency, output capacity, mechanical damage and scatter loss. The variables used were two levels of moisture content (20% and 14%), two levels of speed (500 rpm and 700 rpm) and feed rate at two levels (100 kg/hr and 150 kg/hr). The factorial experiments were run in a complete randomized design in three replications. Two local Rice varieties Sipi (variety 1) and Jemila (variety2) were used. Analysis of Variance (ANOVA) and LSD were used to assess the effects of the independent variables on the performance indices of the paddy thresher. The mean values for cleaning efficiency, mechanical damage, scatter loss and output capacity ranges from 59.28 – 87.82%, 0.02 - 0.23%, 0.02 - 0.05% and 25.26 - 58.82 kg/h respectively. ANOVA results showed that moisture content, feed rate and speed significantly affected cleaning efficiency, mechanical damage and the output capacity at 5% probability for the two paddy varieties. Keywords— Efficiency, output capacity, performance, rice, threshing machine.

scholarly journals Modification of Institute for Agricultural Research Multi-Crop Thresher for Improved Performances

2019 ◽  
Vol 4 (1) ◽  
Author(s):  
Sunusi I Idris ◽  
Usman S Mohammed ◽  
Nura A Sale ◽  
Ibrahim B Dalha
Keyword(s):  
Moisture Content ◽  
Feed Rate ◽  
Agricultural Research ◽  
Throughput Capacity ◽  
Test Results ◽  
Maximum Throughput ◽  
Cleaning Efficiency ◽  
Grain Damage ◽  
Four Levels ◽  
Extraneous Material

In millet producing areas of Nigeria, the predominant method of threshing is traditional. It involves beating the millet panicle with a stick, over a log of wood or by pounding using mortar and pestle. This method is inefficient, time-consuming, labor intensive, prone to drudgery, uneconomical, low output and gives product contaminate with extraneous material such as stones and sand. Though imported threshers are effective in millet threshing; they are expensive, complexed in design and required skillful personnel for operation. An Institute for Agricultural Research  (IAR) multi-crop thresher for sorghum, millet, and wheat was modified for improved performances. The performance of the modified thresher was evaluated using Ex-borno variety of pearl millet. Two levels of moisture content; 9.21% and 10.81%, four feed rates levels; 3, 4, 5 and 6 kg/min, four levels of drum speed; 700, 800, 900 and 1000 rpm were considered during the experiment. The test results indicated as high as 98.78% threshing efficiency, a minimum of 1.02% grain damage, maximum cleaning efficiency of 97.19%, and 2.50% scatter loss and maximum throughput capacity of 194.02 kg/hr. In comparison to the previous thresher, threshing efficiency, mechanical grain damage, cleaning efficiency, scatter losses, and throughput capacity have improved by 2.01%, 330.56%, 9.79%, 10.78%, and 69.86% respectively. The developed thresher is anticipated to increase the farmer’s productivity due to improved performances.Keywords: Millet, Threshing Efficiency, Cleaning Efficiency, Feed Rate, cylinder Speed

Performance Evaluation and Field Characterization of the Sifang Mini Rice Combine Harvester

2017 ◽  
Vol 33 (4) ◽  
pp. 479-489 ◽  
Author(s):  
Shadrack K. Amponsah ◽  
Ahmad Addo ◽  
Komla A. Dzisi ◽  
Jean Moreira ◽  
Sali A. Ndindeng
Keyword(s):  
Smallholder Farmers ◽  
Rice Variety ◽  
Field Capacity ◽  
Soil Conditions ◽  
Rice Varieties ◽  
Ecological Zones ◽  
Grain Moisture ◽  
Grain Damage ◽  
Wide Range ◽  
Combine Harvester

Abstract. Performance of a Sifang mini rice combine, originally developed in China, was evaluated under local farmer field conditions in Benin. Results from field evaluation show that the combine worked satisfactorily on less dense rice fields with minimal weeds at grain moisture contents between 19.1% and 20.1% w.b. on soils with moisture content from 23% to 33% d.b. while causing no significant changes to soil physical properties. With harvesting speed ranging from 0.8 to 4.5 km/h, the harvester had a field capacity of 0.10 to 0.39 ha/h and consumed fuel of up to 11 L/ha while having track slip of 6% to 9%. Harvesting using 2- and 1-L gear offered the best efficiency for IR841 and Nerica L20 rice varieties, respectively. As harvesting speed increased, harvesting efficiency decreased and crop throughput increased irrespective of rice variety. The combine produced low mechanical grain damage with total grain loss ranging from 1.43% to 4.43% and 1.85% to 5.6% for the IR841 and Nerica L20 rice varieties, respectively. At an investment cost of US$5000 and hiring at US$10 per h, owning the mini combine harvester becomes profitable after 342 h of machine use; equivalent to approximately 133 ha of paddy field harvested at a harvesting capacity of 0.39 ha/h. Further testing of the combine under a wide range of crop and soil conditions across different agro-ecological zones and economic comparison with manual harvesting is recommended. This would offer smallholder farmers diverse options of rice harvesting mechanization to facilitate future adoption of improved technologies. Keywords: Crop throughput, Field capacity, Field efficiency, Grain loss, Mini rice combine, Sifang.

scholarly journals Effect of sowing technology on the yield and harvest grain moisture content of maize (Zea mays L.) hybrids with different genotypes

2016 ◽  
pp. 17-22
Author(s):  
Eszter Murányi
Keyword(s):  
Moisture Content ◽  
Grain Yield ◽  
Plant Density ◽  
Research Work ◽  
Field Research ◽  
Weather Conditions ◽  
Research Centre ◽  
Row Spacing ◽  
Grain Moisture ◽  
Significant Difference

From the aspect of the efficiency of maize production harvest grain moisture content shall be considered beside the amount of harvested grain yield. Hybrids with different genotypes and vegetation period length lose their moisture content different that is affected by row spacing and plant density – among agrotechnical production factors – depending on the given crop year. In the present research work three crop years with different weather conditions were studied (2013, 2014, and 2015). The small-plot field experiment was set up at the Látókép Field Research Centre of the University of Debrecen, Centre for Agricultural Sciences with four replications on a chernozem soil type. The effect of three factors was analysed in the experiment on yield amount and its moisture content. Factors were row spacing (45 and 76 cm), plant density (50, 70 and 90 thousand plants ha-1), while hybrids were of very early (Sarolta: FAO 290), early (DKC 4014: FAO 320, P 9175: FAO 330, P 9494: FAO 390) and medium (SY Afinity: FAO 470) ripening. In the crop year of 2013 the highest yield was produced – regarding the average of the hybrids – by the application of a row spacing of 45 cm (4.5%, 673 kg ha-1), however there was no significant difference between the yield of the populations of different row spacings. Significant difference (14.9%, 1751 kg ha-1; 6.3%, 583 kg ha-1) could be found in case of yield between different row spacing applications in 2014 and 2015. The effect of insufficiently distributed low amount of precipitation and lasting heat days in 2015 could be revealed in yield amounts and harvest grain yield moisture content results that were lower than in the previous years. In 2015 grain yield moisture content varied between 10.3 and 13.9% in case of a row spacing of 45 cm, while by 76 cm between 11.0 and 13.9%.

scholarly journals Hasil Padi dari Empat Kelas Benih Yang Berbeda

2014 ◽  
Vol 33 (3) ◽  
pp. 169 ◽  
Author(s):  
Indria W. Mulsanti ◽  
Sri Wahyuni ◽  
Hasil Sembiring
Keyword(s):  
Grain Yield ◽  
Yield Components ◽  
Rice Variety ◽  
Growth Yield ◽  
Genetic Purity ◽  
Rice Varieties ◽  
Field Station ◽  
Significant Difference ◽  
Foundation Seed ◽  
Breeder Seed

There is conflicting informations regarding the advantages of planting of stock seed (SS) over Extension Seed (ES) classes. An experiment to study the effect of different seedclasses on grain yield and yield components of five rice varieties was carried out at two locations i.e. Sukamandi and Muara Field Station during the wet and dry season of 2009. The treatment consisted of five rice varieties, namely: Ciherang, Mekongga, IR64, Cigeulis and Situ Bagendit, and their respective seed classes: namely breeder seed, foundation seed, stock seed and extension seed. The experiment was arranged in a split plot design with three replications, where rice varieties were as main plots and seed classes as sub plots. Variables to be evaluated consisted of: quality of seed before sowing, plant growth, yield components and grain yield. Performance of the observed variable of each rice variety derived from four different seed-classes in each location and planting season were not significantly different. Differences of seed classes only affected the percentage of seed purity. There was no significant difference on the grain yield and the seed yield obtained from different seed classes of each variety. These results disprove the belief that the higher seed class the higher productivity, which was found to be a wrong perception. Seed certification is designed to maintain the genetic purity of variety and not to increase the productivity.

scholarly journals KERAGAAN MORFOLOGI DAN HASIL VARIETAS UNGGUL BARU PADI DENGAN PENGELOLAAN TANAMAN TERPADU DILAHAN SAWAH TADAH HUJAN KABUPATEN JEPARA

2020 ◽  
Vol 22 (1) ◽  
pp. 119
Author(s):  
Budi Winarto ◽  
Sodiq Jauhari
Keyword(s):  
Plant Height ◽  
Rice Variety ◽  
Crop Management ◽  
Rice Production ◽  
Yield Potential ◽  
Rice Grain ◽  
Rice Varieties ◽  
Rice Productivity ◽  
Integrated Crop Management ◽  
Significant Difference

<p><strong>Morphology Performances and Yield of New Superior</strong><strong> Rice Variety with Integrated Crop Management in Rainfedland Jepara District</strong>. One constraint for increasing rice production in rainfedland Jepara District is the availability of adaptive improved rice varieties with high yield. The purpose of this assessment are: (1) to analyze the morphological performance and yield potential of some new superior varieties in rainfedland Jepara District (2) to assess the level of main rice pest and diseases attack and the presence of natural pest’s enemies, and (3) to assess the responses and perceptions of farmers towards integrated crop management applications in rice production. The assessment was conducted in ranfedland Mayong Kidul Village, Mayong Sub-district, Jepara District by involving Lestari Farmer’s Group on the second planting season of 2015. The assessment also employed A Randomized Block Design with three replications and rice variety as treament: Inpari-30, Inpari-31, Inpari-10, Conde, mekongga and varietas Ciherang as the control variety.  The collected data of morphology and rice yield were analyzed using analysis of variance,  then the mean difference values between treatments was further tested using the least significant difference test at p = 0.05. The results showed that there were influences of rice varieties on plant height, number of tillers, pests and diseaces as well as yield and yield component of the five rice varieties. The Mekongga variety is the most suitable rice variety that could be used in rainfedland in order to improve rice productivity in rainfedland of Jepara District. This variety could produce dry rice grain up to 6.8 tons/ha, with 105.5 cm plant height, 14.1 productive tillers, 23.7 cm panicle length 566 and 176 number of filled and empty grains 5 panicles respectively, 4.5 pest and diceases attack level, and is able to increase grain yield up to 30.7% compared to that of control variety. Respondent farmers have a positive perception to the concept of integrated crop management with a value of 68.3%. The implication of these results is that the utilization of new superior rice varieties especially Mekongga have a high potential for improving rice productivity in rainfedland of Jepara District. <em></em></p><p> <strong>Keywords</strong>: <em>New Superior Rice Varieties,</em><em> rainfedland, ICM, Jepara</em></p><p align="center"><strong> </strong></p><p align="center"><strong>ABSTRAK</strong></p><p align="center"><strong> </strong></p><p>Keragaan Morfologi dan Hasil Varietas Unggul Baru Padi dengan Pengelolaan Tanaman Terpadu di Kabupaten Jepara.  Salah satu kendala peningkatan produktivitas padi di lahan sawah tadah hujan Kabupaten Jepara adalah ketersediaan varietas unggul yang adaptif dengan produktivitas tinggi. Tujuan pengkajian ini adalah (1) mengkaji keragaan morfologi dan potensi hasil beberapa VUB padi di lahan sawah tadah hujan (2) mengkaji tingkat serangan hama dan penyakit utama padi serta keberadaan musuh alami hama, dan (3) mengkaji respon dan persepsi petani terhadap penerapan PTT padi. Pengkajian dilakukan di lahan sawah tadah hujan Desa Mayong Kidul Kecamatan Mayong Kabupaten Jepara, Kelompok Tani Lestari pada musim tanam ke-2 tahun 2015<em>. </em>Pengkajian ini menggunakan Rancangan Acak Kelompok dengan tiga ulangan dan sebagai perlakuan adalah varietas padi: Inpari-30, Inpari-31, Inpari-10, Conde dan mekongga serta varietas Ciherang sebagai pembanding. Data yang terkumpul dianalisis menggunakan analisis varian (anova), selanjutnya perbedaan nilai tengah antar perlakuan diuji lanjut menggunakan uji beda nyata terkecil (BNT) pada p=0.05. Hasil pengkajian menunjukkan bahwa terdapat pengaruh nyata varietas padi terhadap tinggi tanaman, jumlah anakan, perkembangan OPT, hasil dan komponen hasil gabah dari kelima varietas tanaman padi yang diuji. Varietas Mekongga merupakan VUB padi yang paling sesuai ditanam di lokasi pengkajian dalam rangka meningkatkan produktivitas padi. Varietas ini menghasilkan gabah kering giling hingga 6.8 ton/ha, tinggi tanaman 105.5 cm, jumlah anakan produktif 14.1, panjang malai  23.7 cm, jumlah gabah bernas 566 butir  per 5 malai, jumlah gabah hampa 176 gabah hampa per 5 malai dan tingkat serangan OPT 4,5%, serta  mampu meningkatkan hasil gabah hingga 30.7% dibanding kontrol. Petani juga memiliki persepsi positif terhadap konsep PTT dengan nilai mencapai 68.3%. Implikasi hasil kajian ini adalah pemanfaatan VUB padi terutama Mekongga memiliki potensi tinggi dalam meningkatkan produktivitas padi di lahan sawah tadah hujan Kabupaten Jepara.</p><p><strong> </strong><strong>Kata kunci</strong>: <em>VUB padi, tadah hujan, PTT, Jepara</em></p><p> </p>

scholarly journals Performance Optimization of Groundnut Shelling Using Response Surface Methodology

2021 ◽  
Vol 24 (1) ◽  
pp. 1-7
Author(s):  
Aliyu Idris Muhammad ◽  
Moshud Isiaka ◽  
Muhammed Lawal Attanda ◽  
Sarafadeen Kolawole Shittu ◽  
Ibrahim Lawan ◽  
...  
Keyword(s):  
Response Surface Methodology ◽  
Moisture Content ◽  
Response Surface ◽  
Performance Optimization ◽  
Feed Rate ◽  
Performance Indices ◽  
Cleaning Efficiency ◽  
Output Capacity ◽  
Order Polynomial ◽  
Input Variables

AbstractThis study evaluated the influence of drum speed, moisture content, and feed rate on the performance indices of groundnut sheller using Ex-Dakar groundnut variety. Response surface methodology was used to study the influence of input variables and optimize the processing conditions. The developed second-order polynomial model adequately described the performance responses, including output capacity, shelling and cleaning efficiencies, and kernel damage. The input variables indicated significant influences on performance responses. The optimized processing variables for the responses were drum speed of 210 rpm, moisture content of 8%, and feed rate of 350 kg∙h−1. The optimum responses obtained were output capacity of 302.52 kg∙h−1, shelling efficiency of 97.61%, cleaning efficiency of 53.16%, and kernel damage of 4.04%. These performance responses were validated experimentally and were close to the observed results.

scholarly journals The floating traditional Rice Techno-Demonstration for Community Food Security

2019 ◽  
Vol 7 (1) ◽  
pp. 09-11
Author(s):  
Pasigan U. Buisan ◽  
Nasrudin A. Buisan
Keyword(s):  
Water Hyacinth ◽  
Crop Production ◽  
Management Practices ◽  
Rice Variety ◽  
The Philippines ◽  
Rice Production ◽  
Community Food Security ◽  
Rice Varieties ◽  
Significant Difference ◽  
Traditional Rice

Rice ranks as the most important cereal in the Philippines. It is one of the country’s largest agricultural production systems, highest among crop production. The general objective of the study was to determine if traditional rice variety can give optimum yield when planted in the floating area. The materials used were traditional rice varieties. The water hyacinth was converted into a rice floating area. Data gathered was analyzed using the analysis of variance. The LSD Test was employed to compare the significant difference between treatment mean values. Floating rice production is a viable option among small farmers particularly in areas where water availability is not control such as marshy area. Local materials such as water hyacinth as floater are widely available. There is a need however, for a sound cultural management to make it sustainable. The good agronomic characteristics of the rice varieties can be attributed by the types of variety and the management practices. The floating area can be converted a potential area for rice production for a certain community particularly in the marshy area. However, there a need for a sound management practices in the floating area that can farmers may adopt for a sustainable rice floating production area

scholarly journals Application of a method based on the measurement of radiation reflectance when estimating the sensitivity of selected grain maize hybrids to the herbicide CALLISTO 480 SC + ATPLUS 463

2009 ◽  
Vol 57 (4) ◽  
pp. 117-124 ◽  
Author(s):  
Michal Vondra ◽  
Vladimír Smutný
Keyword(s):  
Moisture Content ◽  
Grain Yield ◽  
The Other ◽  
Maize Hybrids ◽  
Limit Value ◽  
Grain Moisture ◽  
Significant Difference ◽  
Photosynthesis Efficiency ◽  
Small Plot ◽  
The One

The application of methods based on measurements of photosynthesis efficiency is now more and more popular and used not only for the evaluation of the efficiency of herbicides but also for the estimation of their phytotoxicity to the cultivated crop. These methods enable to determine also dif­fe­ren­ces in the sensitivity of cultivars and/or hybrids to individual herbicides. The advantage of these methods consists above all in the speed and accuracy of measuring.In a field experiment, the sensitivity of several selected grain maize hybrids (EDENSTAR, NK AROBASE, NK LUGAN, LG 33.30 and NK THERMO) to the herbicide CALLISTO 480 SC + ATPLUS 463 was tested for a period of three years. The sensitivity to a registered dose of 0.25 l . ha−1 + 0.5 % was measured by means of the apparatus PS1 meter, which could measure the reflected radiation. Measurements of sensitivity of hybrids were performed on the 2nd, 3rd, 4th, 5th and 8th day after the application of the tested herbicide, i.e. in the growing stage of the 3rd–5th leaf. Plant material was harvested using a small-plot combine harvester SAMPO 2010. Samples were weighed and converted to the yield with 15 % of moisture in grain DM.The obtained three-year results did not demonstrate differences in sensitivity of tested hybrids to the registered dose of the herbicide CALLISTO 480 SC + ATPLUS 463 (i.e. 0.25 l . ha−1 + 0,5 %). Recorded results indicated that for the majority of tested hybrids the most critical were the 4th and the 5th day after the application; on these days the average PS1 values were the highest at all. In years 2005 and 2007, none of the tested hybrids exceeded the limit value 15 (which indicated a certain decrease in the efficiency of photosynthesis). Although in 2006 three of tested hybrids showed a certain decrease in photosynthetic activity (i.e. EDENSTAR and NK AROBASE on the 3rd day and NK LUGAN on the 2nd–4th day after the application), no visual symptoms of damage of plants were found out. It could be concluded that the herbicide CALLISTO 480 SC + ATPLUS 463 (when applied in the registered dose of 0.25 l . ha−1 + 0.5 %) did not damage hybrids under study and did not show any statistically significant effect on the grain yield. This means that the manufacturer’s statement that this herbicide, if applied in the registered dose of 0.25 l . ha−1 + 0.5 %, is very tolerant to grain maize seedlings in the growth stage of 3–5 leafs, was correct. The most suitable date of measurements of differences in sensitivity to and/or potential phytotoxicity of the preparation CALLISTO 480 SC + ATPLUS 463 seemed to be the fourth day after the application because the measured average PS1 values were the highest in all hybrids under study. When evaluating the pooled three-year yields of grain (converted to 15% of moisture content) by means of variance analysis, a statistically significant effect of the year and the hybrid on the grain yield was found out. On the other hand, however, there was no statistically significant difference in the grain yield between control and the variant treated with the registered dose of the herbicide CALLISTO 480 SC + ATPLUS 463, i.e. 12.08 t . ha‑1 and 11.50 t . ha−1, respectively (grain moisture content 15%). When comparing pooled three-year yields of all hybrids under study, there were statistically significant differences between yields of the hybrid NK THERMO on the one hand and hybrids EDENSTAR and NK AROBASE on the other.

scholarly journals Effect of harvest time of paddy on milled rice yield and broken kernels

2019 ◽  
Vol 11 (4) ◽  
pp. 327-331
Author(s):  
V. N. Markova Ruzdik Ilieva ◽  
N. Markova Ruzdik ◽  
D. Vulcheva ◽  
Lj. Mihajlov ◽  
M. Ilievski
Keyword(s):  
Moisture Content ◽  
Rice Yield ◽  
Rice Variety ◽  
Maximum Yield ◽  
Harvest Time ◽  
Milled Rice ◽  
Rice Varieties ◽  
Yield And Quality ◽  
Rice Yields

Abstract. The aim of this study was to determine the optimal harvest time to achieve maximum milled rice yield and quality of white rice in some newly introduced Italian rice varieties grown under agro-ecological conditions in the region of Kocani town, Republic of North Macedonia. During the 2014 and 2015, fourteen rice varieties were cultivated to estimate the milled rice yield and broken kernels from three different harvest times. From each rice variety, samples with moisture content between 20-22% (I variant), 18-20% (II variant) and 16-18% (III variant) were taken. From the third harvest variant the highest percentage of milled rice yield (65.23%) was obtained but also the highest rate of broken kernels (12.79%). From the remaining two harvests, almost identical milled rice yields were received (64.19% from the first variant and 64.33% from the second variant), but in terms of broken kernels, there were significant differences. The optimum moisture content during the harvest in order to obtain maximum yield and quality of milled rice ranged from 18% to 20%. The varieties Arsenal, Sprint and Mirko had the most favorable values for milled rice yield and broken kernels.

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