Browsing by Author "Kushwaha, R.L."
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Item An evaluation of devices for reducing dry bean harvesting losses(1993-02-25) Zyla, L.E.; Kushwaha, R.L.A preliminary evaluation of three concepts for reducing dry bean harvest (gathering) losses and a more detailed field evaluation of the air-jet guard concept were completed in 1992. Preliminary concept evaluations included the effectiveness of the air reel as a harvest aid, the feasibility of stripping bean pods and seed from the plant, and the effectiveness of three crop lifters under field test conditions. Field testing of the air-jet guard concept was undertaken at six commercial pinto bean sites in Saskatchewan. The air-jet guards did not reduce gathering losses below ten percent, which is considered the minimum acceptable commercial loss level. Losses were variable, but averaged 460 kg/ha (410 lbs/acre). The variability encountered during field testing was investigated by collecting plant samples from each site to determine moisture content. Plant height measurements for the samples were obtained using image processing.Item Seed and fertilizer separation under till-planting system(1999-02-25) Afify, M.T.; Kushwaha, R.L.; Milne, W.G.; El-Haddad, Z.A; El-Ansary, M.Y.Three prototypes of till-planting unit were developed with which tilling strips, application of fertilizer with separation below the seed, and seeding was accomplished simultaneously. Therefore, the number of field operations required was decreased. The separation between seed and fertilizer was determined for till-planting units in an indoor soil bin facility at three speeds, three depths, three levels of soil compaction, and three levels of soil moisture content. Field tests were also conducted at three speeds and three depths. Results of the soil bin tests indicated that the most favorable condition in terms of high vertical separation between seed and fertilizer occurred with unit two at medium level of soil moisture, low level of soil compaction, 100 mm depth, 3-5 km/h speed of operation. However, in the field tests, the best results were obtained at 125 mm depth and at 3 km/h speed with unit two.Item Seeding trials with three till-planting units(1999-02-25) Afify, M.T.; Kushwaha, R.L.; Milne, W.G.; El-Haddad, Z.A; El-Ansary, M.Y.Three prototypes of a single till-planting unit system suitable for Egyptian agriculture were evaluated in clay soil by determining seedling emergence with three crops. Tillplanting units were tested in the field at three speeds and three depths. Crop emergence data were collected on the 7, 14, and 20th days following seeding. Results indicated that the highest values of seedling emergence were obtained with unit two, which was equipped with a Barton angle disc opener, at 3 or 5 km/h speed, and 125 mm depth of operation for pea or corn crops.