Plant Nutrition
A group to explore all aspects of plant nutrition and methods to optimise nutrient use efficiencies
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Eric Dobbe started the discussion Which form of foliar calcium to use? in the forum Plant Nutrition 3 months ago
Which form of foliar calcium to use?
I listened to a podcast from John Kempt the other day and he mentioned that for foliar application, Calcium needs to be in the chelate form. Are most of the products on the market in a micronized carbonate form?
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Mark Tupman posted an update in the group
Plant Nutrition 4 months agoTimely.
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Will McGirr posted an update in the group
Plant Nutrition 6 months agoApplying foliar nitrogen timing
if your soil is low in N and you have used a fertiliser at seeding with a low % of N – when is the best time after plant emergence to apply foliar nitrogen?
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Hey Will,
You can apply foliar nitrogen at any stage after emergence as the rates of N are quite low and what doesn’t get on the leaves ends up on the soil anyway.
However, plant uptake of any fraction that lands on a leaf is much more efficient and you get better bang for your buck if you wait until there is a decent amount of leaf matter before…
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Agree with everything Mark said. There is some mineralisation of N from organic matter after the break, so adding extra N too early will have less benefit than once the plants are actively growing. The cropping guys work on topping up 4-6 weeks post emergence for winter cereals. If you have kikuyu as a dominant pasture, extra N now with…
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Mark Tupman replied to the discussion Potassium in our soils in the forum Plant Nutrition 7 months ago
Reply to Potassium in our soils
When it comes to potassium inputs, potassium sulphate is probably your best option.
It’s an allowable input in certified organic enterprises and has a relatively low salt index so not hard on soil biology.
Will McGirr -
Kate Tarrant replied to the discussion Potassium in our soils in the forum Plant Nutrition 7 months ago
Reply to Potassium in our soils
Hi Will, you’ll find some useful information in this article…https://lowerblackwood.com.au/targeting-plant-nutrition/.
My understanding is that the volume of potassium required generally can’t all be addressed through foliars, improving soil biology will assist making what you have in the soil more available, helpful to know your totals as Max…
lowerblackwood.com.au
Targeting Plant Nutrition - Lower Blackwood LCDC
The application of nutrients, or fertilisers, that plants require is an important component in primary production operations. For numerous reasons, crops or
Will McGirr -
Max Stam replied to the discussion Potassium in our soils in the forum Plant Nutrition 7 months ago
Reply to Potassium in our soils
Did the test just look for available potassium or total potassium? Big difference. Have you looked into making total available using fungi?
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Will McGirr started the discussion Potassium in our soils in the forum Plant Nutrition 7 months ago
My soil tests are showing a severe lack of potassium (no shocks there!) – saying I need to apply 80kg/Ha. Question is – how do I improve potassium levels in my paddocks without using NPK / chemical fertilisers?
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Daniel Stocker posted an update in the group
Plant Nutrition 7 months agoHi All,
We’re wanting to do more ‘quick and dirty’ sap analysis on the vineyard during the upcoming growing season, to look at responses to foliar nutrition. Does anyone have recommendations on where we can get the equipment? Really we’re just chasing a refractometer and a hand held clamp/pliers for getting the sap out of petioles as a…
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I use these could probably knock up a set easy enough but it’s another job. https://nutri-tech.com.au/products/advanced-sap-extractor
could buy a refractometer same site and shipping but probably cheaper option elsewhere
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Lower Blackwood LCDC posted an update in the group
Plant Nutrition 8 months agoThose of you that made it to our workshop last week with Joel were treated to a deep dive into how and why foliars are a very effective tool to assist plants with nutrient uptake, and also what the key considerations are to ensure a the best outcome when using foliars. Lots of great information also on how nitrogen ‘works’ in the system and …
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Lower Blackwood LCDC posted an update in the group
Plant Nutrition 9 months agoA reminder that there is an excellent workshop coming up March 8 with Joel Williams on plant nutrition with foliars. Unfortunately we were not able to offer this workshop free of charge but it will be well worth the ticket price as Joel is an absolute font of really practical knowledge on this topic. Click through for more info and to get…
lowerblackwood.com.au
Managing Pastures With Foliar Nutrition - Lower Blackwood LCDC
While much of our focus is taken up with trying to rectify soil deficiencies with soil amendments, there is increasing awareness that foliar nutrition can be
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