Query: plot seeder

title: OPTMIZING THE PERFORMANCE OF PLOT SEEDER MACHINE TO SUIT WHEAT SEED PRODUCTION
abstract: The plot seeders have a variety of distribution systems makes it possible to distribute the seed for a plot over multiple rows and many options allows you to customize the machine for many different applications. So when used a plot seeder to suitable for cultivation of wheat seeds must adjustment transmission mechanism and a feed cartridges diameter, as well as seeding shaft and distributor cone rotates. This study carried out to improve the performance of plot seeder and minimize the total damage during wheat seed production processes. The treatments under this study were at four diameters of feed cartridges (10, 15, 20 and 25 mm O) two kinds of distributor plat (distributor plat with and without partition)and three groups of sowing transmission. The variation coefficient of seeds and seeds damage were measured. The seeds damage generally increased with the decrease of feed cartridge from 15.6% at feed cartridge diameter (10 mm O) to 2.4% at feed cartridge diameter (25 mm O) Also seeds damage increased with distributor plat with partition. That was 15.6% with distributor plat with partition and 14.6% without partition. The variation coefficient of seeds decreases at diameter of feed cartridge (20 mm O) with distributor plat without partition and the first group of sowing transmission.

title: Tractor Mounted Four Row Plot Seeder

title: CONSTRUCTION OF AN EXPERIMENTAL PLOT SEEDER OF WHEAT PLANTING AND COMPARE IT BY IMPORTED ONE
abstract: Researchers frequently include multiple cultivars and fertility levels in field experiments. Therefore, the experiments sowing operation must represent a considerable saving in time and labor, compared to hand sowing. Greater flexibility in experimental design and setup could be achieved by equipment that enables quick changes in the cultivar and fertilizer rates from one plot to the next. A satisfactory seed drill must distribute a given quantity of seed evenly over a predetermined length of coulter row, the coulters must be spaced at exact intervals and depth of sowing must be uniform. In a self propelled type of plot seeder, no coulter should run in a wheel track as the compaction of the soil can cause observable differences in vigor between plants in such a row and those in un compacted rows. The machine should sow in succession from a try in which a series of seed pocket separated clearly and must be put into distributer funnel by an assistant operator. The length of gap being varied according to the nature and purpose of the plot. The objectives of this experiment were 1 to design and construct a local self propelled plot seeder and 2 To compare it with the imported (Wintersteiger) plot seeder in cereal breeding programs.  A small plot seeder was designed and constructed to meet this objective. The unit consists of the following basic components: a toolbar for pulling a set of six blade coulter, an air compressor for lifting and putting down the openers and metering transmission drive wheel, an operators chair and work rack, one belt seed distribution. A cone celled and rotor seed distributor is used for seed distribution to the openers. The cone system is connected to the gearbox and allows for great flexibility in changing cultivars, crop species, and plot length. This is driven by the separate drive wheel. The cone celled distributor sows all the seed of the sample in making one complete turn. The spinner can be equipped with a 4 or 6 outlet delivery head, depending on row spacing. The planter is fitted with hoe openers. Alternatively, spear point openers have sometimes been used under conventional tillage systems. Seeding depth control was achieved by an adjustment screw handle. The plot seeder is being moved by a 9.6 kW engine, and has been successfully used in applications. Field experiment established by using 4 plot length (2, 3, 4 and 6) with 4 replication by the constructed plot seeder and imported plot seeder. Crop measurements were planted height, spike m 2, seeds/spike, Thousand kernel weight, Biological and grain yield, harvest index and drill measurements were seeding depth, uniformity of row spacing in action, seed counter performance, power requirement, slippage evenly of rows after planting.  Results showed that there were significant differences between the plant emergences. The emergencies were higher in plots, which planted by the new plot seeder. The differences between seed distribution of openers were insignificant, but the variances of new plot seeder and imported plot seeder were 0.267 and 1.05 respectively. Mean planting depth of plots planted by the Wintersteiger plot seeder was 0.8 cm shallower than the adjusted planting depth while mean planting depth in plots planted by constructing machine had only 0.01 cm variation. Results of variance analysis revealed that effect of treatments on wheat grain yield and yield components was significant. So that, highest grain yield (4216 kgha 1) biological yield (8704 kgha 1) number of spikes per square meter (649spike) obtained from a plot which planted by constructed plot seeder. Increasing yield of treatments which planted by constructed plot seeder might be because of increasing the number of spikes per square meter in those treatments. The mean of spike per square meter in plots of new planter was 691 spikes which were116 spike more than plots planted by imported plot seeder.  The constructed plot seeder had up to 18500$ cost reduction. The seeder was able to distribute the different type of seed to the seed tubes uniformly in laboratory tests, nevertheless it is necessary to test the constructed plot seeder in field condition by using different seed type and conducting new research project. Advantages of this planter include less variation of seed fall down in different coulters, perfect planting depth control, separate wheel for adjusting planting length, minimize the slippage of planter driven wheel and proper utility in different field condition. According to effects on crop parameters the constructed plot seeder had relative priority to imported one. In addition easily accessories supply and cheaper prime cost are profit of the designed and constructed plot seeder.

title: Development History, Status and Trends of Plot Seeder
abstract: Plot seeder is a special seeder for field experiment on developing new varieties, breeding high quality seed and holding comparison test of varieties. The three stages of plot seeder development (germination stage, development stage and improvement stage) in developed countries and the development over 30 years in China were introduced. Working principle, characteristic and common types of plot seeder at the present time are shown. The trends of plot seeder from 4 aspects, including structure and types, application, research, manufacturers, show development of plot seeder is benign and China will make important contribution in the application for plot seeder development.

title: Influences of Main Parameters on Performance of Seed Filling Device in Plot Seeder
abstract: Seed filling device of plot seeder is the research object. Influences of the four test factors (motion velocity (v) rotation speed of filling device (o) generatrix length of seed filling device (l) base angle of seed filling device (a) on the uniformity in seeding filling process for wheat seed are analyzed by DPS7.05. The effect order of four test factors on wheat seed is obtained. Optimum parameters for wheat seed established are as follows: motion velocity of plot seeder 0.4m/s, rotation speed of seed filling device 0.25rad/s, generatrix length of seed filling device 0.1m, base angle of seed filling device 50o. The best plot length for the seed filling device is 10m and the best CV in seed filling process for wheat seed is 7.85% when seeding rate for wheat seed are 180g per plot.

title: Test on performance of seed filling device of plot seeder
abstract: In order to improve the performance of metering parts,a seed filling device of plot seeder was studied in the paper.The influence of four test factors(motion velocity of plot seeder(v),rotation speed of seed filling device(o),generatrix length of seed filling device(l) and base angle of seed filling device(a) on CV of the uniformity in seeding filling process for rape seed and wheat seed were analyzed by the quadratic general rotational combination design.With DPS 7.05 Data Processing System the regression equations of the uniformity in seed filling process on the four test factors were established.The effect order of four test factors obtained by the regression equations is generatrix length of seed filling devicebase angle of seed filling devicemotion velocity of plot seederrotation speed of seed filling device for rape seed and base angle of seed filling devicegeneratrix length of seed filling devicerotation speed of seed filling devicemotion velocity of plot seeder for wheat seed.The optimum parameters about structure and operational environment for rape seed and wheat seed established by analysis are as follows:motion velocity 0.4 m/s,rotation speed of filling device 0.25 rad/s,generatrix length of seed filling device 0.1 m and base angle of seed filling device 50deg.From the result the best plot length for the seed filling device is 10 m and the best CVs in seed filling process for rape seed and wheat seed are 5.68% and 7.85%,respectively,when seeding rate for rape seed and wheat seed are 5 and 180 g/plot.

title: Design and Research of Feeding Mechanism of Plot Seeder
abstract: plot seeder is a special seeder to cultivate new varieties and make comparative test among varieties.The paper brought up a round hole disc feeding mechanism and introduced the working principle,positioning device and the design of seed bowl of the round hole disc feeding mechanism.The round hole disc feeding mechanism adopted non continuous rotation to meet the agronomic requirements of plot sowing,didn't mix seeds and didn't need to clear the remaining seeds with high degree of automation machinery.

title: Design and experiment on electronic control system for plot seeder

title: Test and optimization of parameters for the storing device of plot seeder.

title: A small plot seeder and fertilizer applicator
abstract: Cereal grain investigators frequently include multiple cultivars and fertility levels in field experiments. Greater flexibility in experimental design and setup could be achieved with equipment that enables quick changes in cultivar and fertilizer rates from one plot to the next. A small plot seeder was constructed to meet this objective. The unit consists of the following basic components: the hitch, a tool bar for pulling a set of six blade coulter or fertilizer knives, a squeeze pump for liquid fertilizer applications, an operators chair and work rack, two belt cones for granular fertilizer and seed distribution, a grain box, and a set of six double disc or spear point openers plus press wheels. The seeder (794 kg) currently is being pulled with a 41 kW tractor, and has been successfully used in no till applications with blade coulters mounted on the front tool bar. Under normal conditions two people can fertilize and seed 60 plots (7 10 m long) in 1 h changing crop cultivars species, fertilizer sources (granular material only) and fertilizer rates.