As we know that Indian soil has shown sufficiency in potassium and still a recommendation of it is in crop production. Lets share your views here. Regards
Welcome Dr. Uma Nath Shukla
We are add 150 kg/faddan (k2O) in Egypt faddan= 4200 m2
This situation, that is, adding some more potassium to the potassium existing in the soil is also related to the clay type of the soil. Especially clay types such as 2: 1 type montmorillonite adsorb potassium and bind it to prevent the plant from benefiting from potassium sufficiently. Actually, this situation is temporary. With irrigation, potassium bound to the tetrahedral layers of 2: 1 type clays will pass into the soil solution and become reusable by the plant. In this context, it is necessary to make fertilization with potassium content especially in soils in arid and semi-arid climatic regions.
Best regards from Turkey
It's possible to use a compound fertilizer that doesn't contain potassium or a small percentage.
It's possible to use a compound fertilizer that doesn't contain potassium or a small percentage.
Potassium is considered as luxurius consumption and in soil, it is present in exchangeablr or non exchangeable form that need to be apply for better production.
https://taurus.ag/potassium-availability-in-the-soil/
This situation can happen as the potassium deposited in soil may not be in a suitable form to be abosrbed by plants. I appreciate you read the article through the link indicated above.
Thank you!
You are right that high potassium content might reduce or eliminate need to fertilize with that element.
The best way to find out is to conduct an experiment
Most of the K is in the structural component of soil minerals and isn’t available for plant growth.
Likewise here in Ilocos Norte, Philippines, our soils have sufficient potassium content. Though sufficient however, still we need to apply because the available potassium content in the soil is quite low or limited and plants require ample amount of potassium to complete its life cycle. To sustain the growth and development of the plant, we need to apply readily available potassium.
Potassium (K) is an essential nutrient for plant growth. It’s classified as a macronutrient because plants take up large quantities of K during their life cycle.
Potassium is associated with the movement of water, nutrients and carbohydrates in plant tissue. It’s involved with enzyme activation within the plant, which affects protein, starch and adenosine triphosphate (ATP) production. The production of ATP can regulate the rate of photosynthesis.
If the soil test is less than 200 there is good potential of potassium responses.
Potassium will increase sugar content in many crops.
High levels of Magnesium can inhibit potassium and vicea versa.
If your Magnesium is over 100 it is usually sufficient of field cropping and if it is not Magnesium management will be needed.
The clay type determines K availability. in vermiculite (vertisols) for instance, K content could be high but not available for the plant as a result of immobilization. Applied fertilizer will not be available for the plant up take unless the soil is saturated with K.
Bidjokazo Fofana Paul Reed Hepperly Ahasan Ullah Khan Geoffrey Kibiri Dionisio Salbado Bucao Paul Reed Hepperly Thank you for participating in discussion. Regards
The availability of the soil potassium cannot be assessed in the soil test but the soil and plant tissue analysis give a much better idea of the real availability and what factors might be influencing it. The high rate of Magnesium in serpentine soils can compromise the potassium levels. The ability of potassium to stimulate yield sugar content and disease resistance combined with the relatively low cost may cause over application which can lead to an artificial Magnesium deficiency.
Low Magnesium contents can lead to muscular and heart issues. In a very old tropical Oxisol the Magnesium level can be so low as not detectable. In that case the limiting of the soil should be based on dolomitic limestone which has significant portion of Magnesium. Under these severe acid infertile conditions the target is 5.7 pH enough to get relief from toxicities without immobilizing micronutrients.
Although K presents in sufficient amounts in soils, they are in different forms. The labile pool which is directly available to plant is very less (about 0.2 to 0.4% of total). K is a major essential plant nutrient, crop remove high amounts from the soil like Nitrogen. Adoption of high-yielding varieties, availability of irrigation facilities results in intensive farming leads to the mining of the reserve pool K from the soil. To maintain the soil K reserve for sustainable long-term soil fertility it is recommended.
Dear Dr. Uma Nath Shukla
You can look this line : Article Role of potassium fertilizer in improving yield and its comp...
Role of potassium fertilizer in improving yield and its components for some sesame varieties under salt-affected soil conditions
Article -January 2021- SVU-International Journal of Agricultural Sciences
Potassium (K) is an essential element for plant growth it is important to food crops. Potassium, often called potash, helps plants use water and resist drought and enhances fruits and vegetables. If soluble Potassium is deficient in soil it can stunt growth and cause other symptomatic issues.
Probably, the soil with high potassium may be affected by acidity, and then we need to apply available potassium. Means, if the soil has high acifity, then nutrient unavailability may happen.
Soil is rich in potassium but only 1 percent is in soil solution and exchangeable form. Also plants require K in large amount having exclusive functions. There is also hidden hunger in plants regarding K where plants though deficient don't show symptoms. Therefore it is essential to apply K fertilizer.
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