What is the problem? And how it would be solved?

Hi Prashant , Welcome to Plantix Community. The symptoms are similar to Citrus Scab . More information for diagnosis and control measures you can review by click above the blue link. Thanks for your post 

this seems as citrus scab for more information use plantix library.

Hi.. I think that's mite ( Phyllocoptruta oleivora) damage

Thanks sir i am uploading more pictures

Thanks sir

Thanks

hi

HiiiPrashant Takawale This seems to be an attack of Citrus rust mite Spray SPIRODICLOFEN Thanks for visiting Plantix Community

Hiii Juliane - Fitocon | ManejeBem you are very much right This is due to Citrus rust mite

It seems like that ManejeBem | Carol could be right ......this plant might be infested with citrus rust mite. Unfortunately this disease is not yet available in plantix library. So let me say something is short. The mite feeds on the outside exposed surface of fruit that is 0.5 inch (1.3 cm) or larger. Feeding destroys rind cells and the surface becomes silvery on lemons, rust brown on mature oranges, or black on green oranges. Rust mite damage is similar to broad mite damage, except that somewhat larger fruit are affected. Most rust mite damage occurs from late spring to late summer. Citrus rust mite tends to occur together with BROAD MITE but usually in greater numbers. Both species thrive in warm, humid conditions. Monitor rust mite from early spring through summer. On orange trees, look for rust mites on young foliage in early spring; by late spring, most of the population will be on fruit. On lemon, rust mites are mostly on fruit throughout the season. To identify previous infestations, check outside fruit for scarred rind tissue. To assess current season levels, examine small green fruit on the inside of the canopy. A 10X to 15X hand lens is necessary to identify these minute mites. They usually feed in protected places, such as the stylar end of the fruit. When mite numbers are high, the mites move over the entire fruit. No effective natural enemies are known, but general mite predators feed on rust mites at times. Once you find one or more infested fruit and if rust mites were a problem the previous year, watch the orchard closely. Threshold levels depend on last year's rust mite problems and current market conditions. If the mite numbers increase quickly or if scarring appears, a pesticide application is generally required. In some cases, the infestation is localized and a spot treatment may be sufficient for control. Recommendation by Sunil Sharma ji is right.

Hello, can you take please a photo for one fruit from a short distance.

🙂

This tree is drinking water abew ask ok

I can understand the problem, let me know the treatment. Otherwise it's a wonderful app.