Potassium is gernaelly act as osmoregulatory substance if you apply at subsequent stage in crop. it make the plant harden also and consisting is due to potassium affect lodging problem.

It is tue Vaibhav, but how, it is due to increasing in root anchur or any other mechnism

There are a series of morphological and physiological reasons that potassium can increase stem strength. When potassium is optimized morphologically the number and sizes of vascular bundles improve. When potassium is optimized translocations of nutrients are facilitated. The potassium deficiency stimulates a leakage of nutrients and this is something that stimulate necrotropic stalk rot pathogens and facilitates the development of stem boring insects. Potassium is seem important for Nitrogen nutrition and some have suggested it is important for silicon issues. The increase of silicon can improve the defense reaction and the structure of stalks especially in high silicon plants such as rice. Silicon has been shown to improve both the defensive metabolism but also the drought reaction and structural aspects. In rice Silicon optimized can mitigate diseases to the extent of some of the most effective fungicides. This is noted in the soils which are low in silicon and plants which have high requirements.

Thanks, Paul for good information

As potassium nitrate commonly used for mango at various fruit stage. It will reduces fruit drops.

Yes, Vaibhav it is so

Looking at the Mulden nutrient interactions the optimization of potassium is synergistic to Manganese and Iron. Manganese plays a key biochemical role in lignification which is a hardening reaction related to recovery from injury. It would make sense that as Potassium is synergistic with Mangananese and Manganese with lignification that this might be related to the ability to achieve the greater stiffening of tissues and the disease reactions related to necrotropic pathogen. As a macro nutrient interaction balanced KPN is about to enhance root health stalk and a prolonging of juevenility. The juevenile stage is less vulnerable to damage and an its enlongation called stay green can have diverse positive cropping influences. While P is very much plant responsive in the early rooting and establishment stages nitrogen in vegetative establishment potassium has been seen as macronutrient associated with translaction of photosynthetate to seed or tubers in plants that generate large amounts of starch and sugar.

Yes, Paul potassium make strong and it able to fight back against pest and desease

Even, split application of potassium shows better results in rice. Particularly grain weight is concern.

When looking for optimized potassium it is important to have a complete soil and plant analyses and look at the relative ratios of nutrients. The applications of potassium can impart a low Magnesium conditions unfavorable to both plants but perhaps more debilitating to animals. Potassium is particularly deficient in older red acid soils such as oxisols and ultisols. The plant Mexican sunflower is notable for having a high potassium content which can favor its use as cover crop or organic amendment source. I am attaching a draft of a mini review which you might find interesting.

Thanks Paul for good informations

I agree with Paul Reed Hepperly

Yes, I am also agree with Paul

As potassium also enriched in soil due to defoliated leaves naturally. The most of soils are already rich in potassium contnent.

Dear Vaibhav Amrasinh Rajemhadik Some soils are rich in potassium which would be over 200 in the soil analysis. A staple crop like potatoes have very high requirement for potassium. Most acid oid tropical soils are not very rich in potassium. The potassium in those cases are depleted. The use of soil and tissue tests can confirm the needs and trials can determine the critical economics.

Looking that this map you can see that in the United States where I am most familiar while potassium might be at good levels in the areas which are colored red to purple in the yellow green and bluish areas mostly in central Midwest and western zones. On the other hand, the potassium can be quite limiting particularly in our southeast quadrant. This limited potassium state is concentrated in ultisols red forested soils which are old and leached and concentrated in the Southeast quadrant of our country. I am presently living in this area and am well familiar with the multiple deficiencies and toxicities of this soil type. The ability to use soil and plant analysis allows us to tailor our nutrient programs according to actual needs and avoid un necessary amendment and getting the right amounts of needs in the right areas.

As the requirements of potassium is always vairable with soil and crops to be grown

Yes, it fiffer

I think, we emriched the sources with Potassium

If soil content high potassium, but plant can not able to uptake it due to compition with Ca /Mg it will be respond only when we apply potassic fertilizers which content readily available form of K

It means soil chemical reactions are very much affect its availability. Is there any soil amendment substances can uses for making it available.

Yes, if we can able to decrease availability of CA then it is OK for potassium availability

Yes sir

Potassium can be applied in differant stags of crop growth may induces better resistance due to constant availabiity and it crop develop resistance.

Yes, split application also benificial in sandy soils

Potassium can resist plant against disease by inhibiting entry of historia

Yes, Vaibhav potassium make strong cuticle layer in plant