Dolomite Lime Bulk | Dolomitiese Landboukalk Grootmaat

5 Things To Do Immediately to Improve Crop Production

  1. Get your agricultural soil sampled, analysed and tested.
  2. Determine the acidity of soil.
  3. Find a reliable, trusted, dolomite lime supplier.
  4. Apply Agricultural Dolomite Lime according to the test results received.
  5. Analyse soil every 3 years to determine if lime should be re-applied.

*** Vaalbrug Dolomite – We supply in bulk – Free State and North West Provinces.

Wat is dolomitiese kalk?

Dolomietpoeier is ‘n kalksteenverbinding wat kalsium en magnesium bevat. Hierdie elemente help om die pH van die grond te beïnvloed en lewer waardevolle voedingstowwe aan plante. Dolomiet kan dikwels natrium bevat, maar dit moet slegs 0,2 persent natrium of minder wees. Meer natrium kan die soutgehalte van u grond verander, wat baie plante kan doodmaak.

Hoe sal dolomitiese kalk die boer help?

Dit verhoog die beskikbaarheid van fosfate en voorkom molibdeentekort. Dit bevorder die aktiwiteit van erdwurms en stikstofbevattende bakterieë, asook die afbreek van organiese materiaal wat stikstof, fosfor, swael en mikro-elemente vrystel.

What moet die boer doen vir die beste resultate?

Net voor die ploeg dien kalk toe op enige tyd van die jaar, maar verkieslik onmiddellik voordat dit geploeg word. Die doeltreffendheid daarvan hang af van hoe goed die kalk met die grond en deeltjiegrootte gemeng is. Landboukalk en dolomitiese kalk bevat fyn sowel as growwe deeltjies. Die fyn materiaal reageer vinnig, terwyl die growwe deeltjies ‘n langtermyneffek het. As die grond te alkalies is, word voedingstowwe soos yster, mangaan, sink en fosfor ontoeganklik vir die gewas. 

As te veel kalk gemeng word met kunsmis wat ammoniak bevat, sal ‘n chemiese reaksie plaasvind wat ammoniakverlies kan veroorsaak. Wanneer kalk en wateroplosbare fosfate gemeng word, word laasgenoemde minder toeganklik. In hierdie geval is dit beter om dolomitiese kalk te gebruik. Dien die mengsel binne ‘n dag of twee toe, want dit is geneig om te verhard. Kalk kan te eniger tyd na kunsmisbehandeling toegedien word.

What is dolomite lime?

Dolomite powder is a limestone compound containing calcium and magnesium. These elements help to influence the soil pH and provide valuable nutrients to plants. Dolomite can often contain sodium, but it should only be 0.2 percent sodium or less. More sodium can change the salinity of your soil, which can kill many plants.

How will this help the farmer?

It increases the availability of phosphates and prevents molybdenum deficiency. It promotes the activity of earthworms and nitrogen-containing bacteria, as well as the breakdown of organic matter that releases nitrogen, phosphorus, sulfur and micro-elements.

What should the farmer do for the best results?

Just before the plow, apply lime at any time of the year, but preferably immediately before plowing. Its effectiveness depends on how well the lime is mixed with the soil and particle size. Agricultural lime and dolomitic lime contain fine as well as coarse particles. The fine material reacts quickly, while the coarse particles have a long-term effect.

 If the soil is too alkaline, nutrients such as iron, manganese, zinc and phosphorus become inaccessible to the crop. If too much lime is mixed with fertilizer containing ammonia, a chemical reaction will occur that can cause ammonia loss. 

When lime and water-soluble phosphates are mixed, the latter becomes less accessible. In this case, it is better to use dolomitic lime. Apply the mixture within a day or two as it tends to harden. Lime can be applied at any time after fertilizer treatment.

 

How Dolomite Lime helps to improve the productivity of the crops.

Agricultural Dolomite Lime:

Dolomite Lime is a metamorphic rock derivative Carbonate of Calcium and Magnesium having chemical formula CaMg(CO3)2 and exists in multiple colours.

Dolomitic lime is more enriched in Magnesium than Calcium and is an excellent source of nutrients. The presence of Magnesium helps plants to carry photosynthesis, an important step in the food assimilation of plants giving the natural green color to leaves.

Magnesium deficiencies could become a substantial restraining factor in boosting crop yields. In the agriculture field, it often supplements basal fertilizers and is used in their combination or on its own, if the Magnesium contents of the soil are too low. Generally, Dry Dolomite Lime applications are more convenient for large agricultural operations that would work better with the soil plowing and rotating equipment before and after planting. Besides its convenience, dry applications are easy to transport to make it cost-effective for large farming operations.

How to use Dolomite Lime for farming?

For Vegetables:

For the new garden beds, it’s advisable to mix 4-5 Kilograms of Dolomite Lime for a 10 square meter area before planting. A similar dose may be applied in the following years before or after planting.

For Fruits:

Measure the trunk diameter of the fruit and ornamental trees first to add 200 grams per 2.5cm of trunk diameter around the stem before watering. For pre-planting applications in fruit trees, 10-20 Kilograms is needed to be added into 12 square meter area. (Common plant spacing for the majority of the fruit plants)

For Field Crops:

For established Soils:

For zero-till or established perennial crops, top dressing with 3-4 tons/hectare will be highly beneficial.

For Crops Cultivation:

To reduce soil acidity in crops like Wheat, Maize, Oats, Legumes, Beans, Cassava, and Millets adding 15 tons/hectare and even mixing it into the soil using a Rototiller would prove highly advantageous for lowering soil pH, crop yields, general health, and Magnesium deficiencies in the top 15cm of farming soil.

Dolomite Lime Application Rate:

The precise Dolomite Lime applications for farming can only be determined after conducting a lime requirement test through analysing the soil samples using the SMP Buffer method that is highly recommended to proceed with any of the soil amendments before planting. The results on both the soil pH and deficiencies may take 1 year to take effect due to the slow mode of action whereas the repeated applications are suggested after every 3 years to replenish soil Magnesium deficiencies. Generally, 3-4 tons per hectare per year or 15 tones/ hectare after 3 years is the justified application rate of Dolomite Lime that the research work proves.

Benefits of Dolomite Lime:

  • It helps plants to develop an extensive root system that increases drought tolerance in the areas of low water availability.
  • Dolomite Lime is an excellent source of Calcium and Magnesium along with several minerals and micronutrients to stop nutrients deficiency of these elements.
  • It increases the soil pH to the desired level so that plants would thrive better by fixing maximum food for their need.
  • Dolomite also reduces leaching down of potassium and brings compaction to loose sandy soils.
  • Root nodulation is also enhanced in beans and other leguminous crops that fix more nitrogen for the basic need of plants.
  • It also increases nematodes and other beneficial worm’s activities that breakdown organic matter and plant debris in the soil adding to the fertility of the soil.

Why should farmers use Agricultural Dolomite Lime?

Using Dolomite Lime becomes more important if your soil is deficient in Magnesium and possess acidic properties. Generally, good product sources contain a 2:1 ratio of Calcium and Magnesium as our Dolomite Lime possess a higher percentage of both Calcium and Magnesium in product analysis reports. Your soils need to tested first before applying any of the recommended rates. If it tests 6:1 or greater in Calcium: Magnesium ratio, then it is necessary to add Dolomite Lime given the Magnesium deficiencies in your soil. Moreover, Magnesium deficiency is more common in sandy or eroded soils that are quick-drying and exist in areas under drought.

 

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Vaalbrug Dolomite delivers to farmers and businesses – up to about 300km from Viljoenskroon, near Orkney.  

Alberton

Krugersdorp
AllanridgeLadybrand
BalfourLeeudoringstad
BethlehemLichtenburg
BloemfonteinLindley
BloemhofNigel
BoksburgOdendaalsrus
BothavilleOrkney
BrandfortOttosdal
BritsPapierstad
BronkhorstspruitParys
BultfonteinPotchefstroom
Carletonville 
Christiana 
 

Reitz

ClocolonRustenburg
ColignySasolburg
CullinanSenekal
DelmasSprings
DeneysvilleStanderton
DerbySteynsrus
FochvilleStilfontein
FrankfortTembisa
GermistonTheunissen
HarrismithVanderbijlspark
HartbeesfonteinVentersburg
HeidelbergVentersdorp

Heilbron

Vereeniging
HennenmanVerwoerdburg
HertzogvilleVierfontein
HoopstadViljoenskroon
Jan KempdorpVilliers
KimberleyVirginia
KlerksdorpVrede
KoppiesVredefort
KosterWarrenton
KroonstadWelkom
WinburgWesselsbron
WolmaranstadWestonaria

Address:
No 577
Viljoenskroon District
9520

Phone:
Office: 018 011 0011
Cell: 082 776 5895
email: vaalbrug@iafrica.com
Website: https://www.vaalbrugdolomiet.co.za/

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