The profit center
Bohumil Hamršmíd, Deputy Head
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- Mazabuka Farmer and Tereza Černá, Ministerial Counsellor of the Ministry of Agriculture of the Czech Republic, recently visited
- CONTACT US TODAY! MF DM mowers ensures a gentle cut
- Nozzle types and their application 3. Carefully wipe the excess dirt off on your hand palm.
- 1. Make your finger a little dirty on muddy soil 2. Wipe your dirty finger over the
- Next month we shall look at the different kinds of sprayers. Published with the acknowledgement to the ARC
- This month we discuss the different products you can produce from soy beans in detail. We thank the ARC Institute
- Full-fat soy flour
- Steaming of soy beans (optional)
- Cracking and de-hulling of soy beans
Bohumil Hamršmíd, Deputy Head of the Embassy of the Czech Republic in Lusaka; Poena van Niekerk, Mkushi farmer; Willem van Zyl, Technical Director of AgriServe Agro; Renier Janse van Vuuren, Managing Director of AgriServe Agro; Brent Stubbs, Mazabuka Farmer and Tereza Černá, Ministerial Counsellor of the Ministry of Agriculture of the Czech Republic, recently visited the Zetor factory in Brno. ProAgri Zambia 25
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ProAgri Zambia 25 L and Rover has enjoyed a long association with rugby at the highest level and after spending a couple of days with the All-New Discovery, I suspect the association is rubbing off as the UK- based manufacturer has produced a new model that kicks compromise into touch at almost every level of operation. If anyone believed that luxury and go- anywhere ability are mutually exclusive attributes, the new Discovery proves them wrong. For sure, some brand diehards may bemoan the fact that the new model has eschewed the distinctive if boxy styling of the third and fourth generation Discovery models in favour of a more generic mix of Land Rover Sport and Range Rover genes. It is though, the fifth generation of the Discovery that puts a little more emphasis on conquering off- road obstacles. At first sight, the All-New Discovery is a little bigger than expected and the front end in particular is rounder and more muscular than photos might portray. The rear end, with its symmetrical window sitting atop an offset number plate intended to retain at least some element of “traditional” Disco design, is, by contrast, much more vertical to the extent that some described it as rather blunt. The practical, space-liberating benefits of this upright rear window make the (optional) third row of seats surprisingly habitable in this genuine 7–seat SUV, so it is fair to say that practicality has triumphed over style as far as the rump is concerned. To my eyes though, attention to detail in the form of much tighter panel gaps from front to back is a stand-out feature of the newcomer, along with very well applied, glossy paintwork - elements that collectively endorse the premium credentials of Solihull’s altogether more imposing SUV. Certainly, Land Rover South Africa and sub-Sahara Africa weren’t shy about giving journalists carte blanche in terms of usage on a two-day adventure that took in billiard table-smooth motorway, simply horrid bush obstacles, narrow and very steep mountain passes, fair to thoroughly indifferent dirt and undulating A-roads in the rural areas. That all adds up to a searching test and it mattered little whether motive power was provided by LR’s familiar 190kW/600Nm TDV6 or by the equally familiar and admired 3,0 Supercharged Si6 (V6) petrol offering peaks of 250kW/450Nm. Four trim levels are offered, these carrying familiar LR nomenclature in the shape of S, HS, HSE or HSE Luxury, but the icing on the cake comes in the form of a short-production-run “First Edition” model which might just become something of a collector’s item. Along the road, the range will be supplemented by a four cylinder 2,0 TD. On the outward journey, I was allocated a 3,0 V6 petrol derivative, thankfully and plushly kitted out in lightish-grey leather which I think looks so much cooler in combination with dark door and dash cappings. Design-wise, you couldn’t be in anything other than a modern Land Rover thanks to the commanding driving position and elegant execution of good quality trim materials combined with slick detailing. As you’d rightfully expect, this Discovery is not short of space, front and rear and that includes the (optional) third row of seats which offers acceptable quarters for two adults for reasonable periods and which also don’t require undue contortions to gain access to tail-end Charlie territory. Remember my earlier remarks about a no-compromise vehicle – here’s practical proof. So too is the provision of near-endless oddments spaces as well as USB ports and power points according to specification ordered. Land Rover Discovery kicks compromise into touch
By Dirk Gallowitz, dirkgallowitz@gmail.com Pictures by Richard Wiley ProAgri Zambia 25
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Owners will also enjoy a multitude of seat folding, heating and cooling options. Placement of controls along with detail design elements have been tweaked but it’s the significantly upgraded central display that takes pride of place among all the soft-surface panels. The binnacled primary instrument cluster is very Evoque-ish in execution with excellent clarity of display, but for now let’s look at that 10-inch InControl Touch Pro set-up that includes a comprehensive sat nav package. The word “touch” telegraphs that the designers have been able to simplify in-dash switchgear through the provision of easy-to-navigate menus which control infotainment/entertainment packages that include iOS and Android connectivity and a high end (optional) 14-speaker Meridian digital surround sound system. Sadly, and as a consequence of licensing restrictions, not all the functionality of the system can presently be exploited in sub-Sahara Africa so potential owners are encouraged to consult their Land Rover importer on exactly what’s possible in each market. Bear in mind though that the latest screen also relays a host of functional images relating to drive systems, vehicle configuration, camera images and much, much more. Further, the clever waterproof Activity Key is also available for those with a sporting bent who want to carry their key with them at all times. By the time we arrived at a short but extremely testing off-road course, it had become apparent that the All-New Discovery has gained further refinement credentials thanks to truly excellent isolation of wind noise (those tight panel gaps really help), a near absence of mechanical commotion on the cruise and to the cosseting, controlled ride served up by the air suspension which is standard on SE and HSE models. And thanks to a considerable reduction in weight, the Disco also feels wieldier and will doubtless consume less fuel. Variable ride height, which logically assists with off-road work, also makes for simplified trailer hitching (for which an automated system is available) and easier entry/exit from the cabin. Oh, and that off-road work – what this luxury vehicle can do is mind-blowing and in truth, it’s this ability to achieve the apparently impossible that sets the Discovery apart from its premium rivals. Serious off-roaders can specify full- time 4WD with a two-speed transfer box but for most, I’m sure the full-time 4WD with Torsen Diff and single-speed transfer box will more than do the trick. Bear in mind that Land Rover’s proven and brilliant (next generation) Terrain Response 2 is standard fare and that All- Terrain Progress Control which uses the cruise control switches to set automated crawling speeds is also on hand to take the hard work out of defeating difficult terrain. All this tech is backed up by Hill Descent Control, Gradient Release Control, Roll Stability Control and Wade Sensing which telegraphs just how near you might be getting to the incredible 900mm depth limit. While all this tech is on-board to ensure that the Discovery truly will go where most others fear to tread, even in the hands of less experienced drivers, I really do advise potential buyers and new owners to take advantage of Land Rover’s off-road training courses, details of which can be sourced from authorised dealers. I also suggest a visit to a Land Rover website to try and grasp the full extent of the hidden technology and what it can do to ensure that owners really do derive full benefit from the drivetrain engineering. Having been thoroughly impressed by the driving dynamics of the 3,0 Si6 petrol version, and that includes the smoothness and responsiveness of the 8-speed auto with paddle shifters, not to mention the potent brakes and the linear steering, we transferred to a 3,0 TDV6 for the return journey. Diesel knock is barely an issue, even at idle with a cold motor, and open road cruising is effortless and pacey enough to make a mockery of speed limits. Incremental acceleration is also a forte but the accelerator pedal is endowed with long travel which rather exaggerates what appears to be a small dose of low speed lethargy. On reflection though, I believe that long pedal travel may be deliberate to allow for gentle throttle progression at very low engine speeds such as encountered in nasty off-road conditions. Whatever, the petrol- powered model feels more urgent in terms of throttle response but in the mid-range and at walking speeds, the diesel’s early torque plateau makes for regular off-roaders and for those who frequently pull laden trailers. The diesel will also drive past more filling stations, but to help you make up your own mind, here are the raw stats and the official combined fuel consumption figures for what the latter are worth given how much real world fuel consumption varies according to vehicle end use:
TDV6: 209 km/h 0 to 100,8,6 s, 7,8 l/100km 3,0 Si6: 215 km/h 0 to 100,7,1 s, 11,5 l/100km In summary, all versions of the new Discovery are available in so many guises to allow for an unprecedented level of personalisation, that a visit to your local dealer is essential. An hour on an on-line configurator would also be well-rewarded. As a consequence of the huge options listings, the end cost of a vehicle is largely in the individual’s hands but what makes any purchasing decision most reassuring is the fact that this new model is so very, very good at everything. Some may suggest that choice within the growing Land Rover range has been made even more difficult, but bear in mind that with the Discovery, even more emphasis has been placed on stupendously good off-road ability to which you can add excellent refinement and on-ride driving dynamics. And then throw in cosseting comfort levels and exceptional practicality. The Discovery truly has become an all-round vehicle without compromise and the good news doesn’t stop there as the brand is fully supported in the years after purchase thanks to the provision of generous warranty and maintenance terms.
Call Barry Hutchinson on +26 (0) 96-802-2320 or e-mail him at BHutchinson@bhbw.co.zm CONTACT US TODAY! MF DM mowers ensures a gentle cut 18
ProAgri Zambia 25 ProAgri Zambia 25
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Sprayers and Spraying Techniques Spray to protect your crops Nozzles and pumps Part 2:
Compiled by J Fuls (Pr Eng) (► p21)
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Nozzle types and their application 3. Carefully wipe the excess dirt off on your hand palm. This is the result on a nozzle with a light colour, like yellow.
The markings on the nozzles are very small and one has to have strong eyes to be able to read it. One can however do the following to make the markings more readable: 1. Make your finger a little dirty on muddy soil 2. Wipe your dirty finger over the markings, but be careful not to wipe dirt into the nozzle hole. 1. Wipe the chalk over the markings in all directions. 2. Carefully wipe the excess chalk off on your hand palm. One can do much the same with school board chalk if one can get hold of some, especially on a dark nozzle like red. This is the result on a nozzle with a dark colour, like red. T he mechanics of a pump is very interesting and consists of the basics on which most spraying mechanisms function. It is therefore beneficial for a farmer to know how it works. This month we look closely at nozzles and pumps. We thank the ARC Institute for Agricultural Engineering in South Africa, who made this article available to the readers of ProAgri Zambia. (► p23)
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Pumps To get the spraying chemicals out of the tank and to the spraying nozzle, one needs a pump. This pump must be able to put pressure on the muti, so that the nozzle can spray as it is supposed to do. (Remember how the bicycle pump made a spray when pumping hard) How do pumps work? A sprayer pump can be compared to a bicycle pump. When we put the pump together again, it looks like this inside:
The bicycle pump pumps air, but if the whole pump is held under water, it will pump water instead of air. Other pumps work much the same as the bicycle pump. Compare the pump below with the bicycle pump which is connected to the bicycle wheel. Note that it has the same components: The main differences are that this piston pump has a separate handle to push the push rod, just like the pump of a knapsack sprayer, the wheel valve of the bicycle serves as the outlet valve for the bicycle pump. On a tractor sprayer, the pump is outside the tank: This is how the pump works: As the piston is moved out by means of the handle, the inlet valve will open to let liquid flow from the tank into the pump. The outlet valve remains closed to stop liquid from returning once it was pushed out. The reverse happens when the handle is moved in for pumping:
Next month we shall look at the different kinds of sprayers. Published with the acknowledgement to the ARC Institute for Agricultural Engineering for the use of their manuals. Visit www.arc.agric.za for more information. 24
ProAgri Zambia 25 Make more from your crop Processing of oil seeds – Part 2 By Theresa Siebert, Petrus Britz, Pr Eng and Agrelek This month we discuss the different products you can produce from soy beans in detail. We thank the ARC Institute for Agricultural Engineering in South Africa, who made their series available to the readers of ProAgri Zambia. Soy beans S oy beans dominate the world oilseed production and make up about 50% of the total world oilseed crop. Soy beans are the most important cash crop in the USA and the mainstay of food production in China and Japan, where it is used in various forms. South Africa has traditionally been neglected and even actively suppressed it as a cheaper protein alternative to red meat, but it is becoming more popular and is used by many maize farmers in their crop rotation programmes. In Zambia soy beans are currently preferred above maize by commercial farmers, due to the price fixing of maize by the government. The ongoing research and development to improve processing technology and the acceptability of retail products also ensured that soy bean production is becoming more and more attractive to traditional summer-crop farmers. Full-fat soy flour is prepared by grinding de-hulled soy beans. The soybeans may be given a steam treatment prior to grinding to produce toasted full-fat soy flour. Steaming inactivates the lipoxygenase that is largely responsible for beany off-flavours. Alternatively, enzyme-active full-fat soy flour can be produced by omitting the steam treatment. The enzymes of this type of soy flour are used to bleach wheat flour and act as dough conditioners. Toasted full-fat soy flour is used in a wide range of baked products and baby formulas. It can also be further processed to produce meat substitutes through a thermoplastic extrusion process. Meat substitutes are soy products with a meat-like texture. They are prepared by mixing soy flour, water and additives to form dough. The dough
(Image source: brookfarm.com.au) The production flow process of full- fat soy flour is then extruded under high pressure to obtain a fibrous texture.
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Cleaning of soy beans The first step in preparing the soy beans for processing is to remove foreign materials, including plant rests, stones and dust. Cleaning is performed by a series of vibrating screens followed by aspirators and cyclone separators.
The soy beans are steamed under light pressure to inactivate lipoxygenase that catalyses lipid oxidation that leads to the development of off-flavours. This step may be omitted for the production of “Enzyme-active full-fat soy flour”.
Drying prior to de-hulling is necessary to reduce the moisture content of the soy beans. A moisture content of 10% is needed to remove the hull effectively. Drying is performed by heated air that is distributed through a bed/layer of soy beans, followed by cooler air, which removes the residual moisture laden air. The dried soy beans are placed for one to five days in tempering bins where the moisture is allowed to equilibrate throughout the beans.
The objective of cracking is to break the soy beans into small pieces to achieve de-hulling and to ease flaking. Corrugated or fluted rollers that rotate in opposite directions and at different speeds are used to crack the beans. Cracking rollers are generally 25 cm in diameter and at least 107 cm in length. Cracking reduces the whole soy bean into four to six fragments, loose hulls and some fines (flour particles). The fragments are sized on vibrating screens.
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