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Development of a rolling punch planter for stony soil conditions

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Abstract

The use of manual planters has been the only solution for farmers' problems in some areas in Southern Brazil where stony soils predominate in steep slopes. Farmers have planted corn and dry beans in these areas since the beginning of this century, using the same kind of equipment. The planters are hand-operated, resulting in limited field capacity and ergonomic problems. A machine using a similar process of dropping the seeds into the holes was designed and constructed. It used 12 spades radially arranged with cam activated doors and a plate seed meter. Preliminary evaluation showed important improvement in the planting operation with reduction in human effort, more accurate stand and high field capacity.
... On other hand, the different positions of seeds on the disk cells cause more intensive skip of the discharged seeds at high forward speeds than the low forward speed. Molin and D'Agostini (1996) and Molin et al., (1998a) reported similar justification for the effect of forward speed on seeded holes index. Chenghua et al., (1999) 97.10 a 93.10 ab 91.10 ab 91.10 ab 89.20 ab 85.1 b * For each parameter, means within each row followed by the same small letters are not significantly different at probability P < 0.05. ...
... The minimum quality of feed index was obtained in wheat residue soil surface condition at forward speed of 7 km/h. Molin et al., (1998a) and Molin and D'Agostini (1996) reported that the forward speed had non-significant effect on the quality feed index. This could be due to the low-value difference in the forward speeds (maximum of 2.5 km/h) considered by them. ...
... It is mentioned that the higher values of precision in spacing index are regarded as an undesirable factor. Molin et al., (1998a) and Molin and D'Agostini (1996) reported similar results. ...
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One of the best solutions of controlling soil erosion in conservation tillage is using punch planters which can plant through residue covers and gravelly soils with slope. In the present research, a precision dibble punch planter with pneumatic seed metering device was developed and evaluated. The laboratory and field tests were conducted to find the effects of forward speed and soil surface conditions on multiple index, quality of feed index, miss index, precision in spacing, and percentage of seeded holes. The results showed an increase in forward speed increased the multiple index, miss index and precision but decreased the quality of feed index and percentage of seeded holes. The field test showed that the soil condition had significant effect on multiple index and precision in spacing, but no significant difference was found in other parameters determined. The forward speed of 5.5 km/h had acceptable performance in three soil surface conditions.
... Furrow openers should be selected according to the type of soil and depth of seed placement. Molin and Agostini (1996) [7] and Molin and Dagostine (1996) [8] developed machine for trashy, stony and light to medium soils, shovel type openers are used. The depth of seed placement from 50 to 100 mm is achieved with these openers. ...
... Furrow openers should be selected according to the type of soil and depth of seed placement. Molin and Agostini (1996) [7] and Molin and Dagostine (1996) [8] developed machine for trashy, stony and light to medium soils, shovel type openers are used. The depth of seed placement from 50 to 100 mm is achieved with these openers. ...
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A hand operated dibbler was evaluated for its performance without changing the metering mechanism. The performance under study in laboratory tests and field tests were examined. The results revealed that the seed rate required for dibbler was observed to be 73.6 kg ha-1and 46.4 kg ha-1 for groundnut and maize crops (spacing of 2.5 cm×2.5 cm). The missing rate was found to be 6% and 4% for groundnut and maize respectively. An effective field capacity of the dibbler was found to be 0.00646 and 0.00682 ha.h-1 for groundnut and maize crops. The field efficiency was found to be 87.88% and 85.05% with theoretical field capacity for groundnut and maize crops respectively. The average number of seeds per hill for groundnut and maize found to be 1.07 and 1.16 respectively. The number of hills per hour was 953 and 967 for groundnut and maize respectively.
... Furrow openers should be selected according to the type of soil and depth of seed placement. Molin and Agostini (1996) [7] and Molin and Dagostine (1996) [8] developed machine for trashy, stony and light to medium soils, shovel type openers are used. The depth of seed placement from 50 to 100 mm is achieved with these openers. ...
... Furrow openers should be selected according to the type of soil and depth of seed placement. Molin and Agostini (1996) [7] and Molin and Dagostine (1996) [8] developed machine for trashy, stony and light to medium soils, shovel type openers are used. The depth of seed placement from 50 to 100 mm is achieved with these openers. ...
Article
Full-text available
A hand operated dibbler was evaluated for its performance without changing the metering mechanism. The performance under study in laboratory tests and field tests were examined. The results revealed that the seed rate required for dibbler was observed to be 73.6 kg ha-1 and 46.4 kg ha-1 for groundnut and maize crops (spacing of 2.5 cm×2.5 cm). The missing rate was found to be 6% and 4% for groundnut and maize respectively. An effective field capacity of the dibbler was found to be 0.00646 and 0.00682 ha.h-1 for groundnut and maize crops. The field efficiency was found to be 87.88% and 85.05% with theoretical field capacity for groundnut and maize crops respectively. The average number of seeds per hill for groundnut and maize found to be 1.07 and 1.16 respectively. The number of hills per hour was 953 and 967 for groundnut and maize respectively.
... Equipment that considers the needs of family farms must be developed (TEIXEIRA et al., 2009;ROMEIRO FILHO, 2012). Of the few initiatives that have been introduced (AREND et al., 2005;TEIXEIRA et al., 2008;ROMEIRO FILHO, 2012;VIANNA et al., 2014), some were mechanical (FRABETTI et al., 2011) and others were manual (MOLIN & D'AGOSTINI, 1996) punch planters that use human force, require no tillage, and have a systematic design methodology (STEFANELLO et al., 2014). These models include the Phases Model, which employs informational, conceptual, preliminary, and detailed design phases (BACK et al., 2008;ROZENFELD et al., 2006). ...
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This study aimed to establish the design specifications of a human-powered punch planter for maize and beans through the application of a systematic design methodology. The most important design requirements and their specifications are related to technical performance and production cost. © 2016, Universidade Federal de Santa Maria. All rights reserved.
... However, backache and fatigue substantially reduced while using the planters. Molin and D'Agostini (1996) developed a rolling punch planter for stony conditions, using 12 spades radially arranged with cam activated doors and a plate seed meter. In crop production, the main condition for high productivity depends on seeds being in the optimum living area. ...
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This study is carried out to evaluate the actual relationship between the three hole areas (9.62, 15.90 and 23.76 mm 2) and the feeding device parameters (seeding speed, peripheral speed of metering wheel device. The hole of feeding device controlled by seed lever control, which lies in seed tank bottom. All parameters measured at constant level of seed brush parameters. Quality of feed, miss, multiple indexes and preciseness of seed index are the most common characteristics used to evaluate the metering wheel device performance. Varies physical properties of seeds including seeds density, projected area, sphericity and one thousand seeds mass are the most important factors in determining the optimum levers dimensions for metering device. The highest seed feed index was achieved on the seed plate with oblong holes (Aob2) for all cowpea moisture content (M1 of 64.45%; M2 of 56.13% and M3 of 49.74%), and the plates with circular holes followed this. The lowest seeding feeding ratio obtained from the experiments using the plates with oblong hole (Aob1). The highest seed feed index was with moisture content (M1=86.08%) at 1.0 km/h, whereas the lowest the seed feed index was with M3 (46.21%) at 4.0 km/h. When the seed feed index was 86.73%, 79.77% and 74.56% for M1, M2 and M3 cowpea moisture content at 1.0 km/h planting speed, the seed feed index reached 71.04%, 61.07% and 46.21%, respectively, in a planting speed of 4.0 km/h. The changing planting speed had a greater effect on the feed index of M3 cowpea seed on the other 2 seed moisture content.
Thesis
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Thesis (M.S.)--University of Wyoming, 1969. Includes bibliographical references (leaves [37]-38).