Hello there,
I'm new here, i'm from Italy and i'm trying to speak english well!

I'm here to expose a problem regarding my citrus: Clementine Ruby (like a simple clementine but it's red inside and outside) grown in pots, was bought exactly last year, in a vessel of 14cm of diameter, had just arrived home I immediately re-post in a new container of 26cm, the leaves are yellowing during the year and especially the plant has not grown an inch.

care:
My treatment was a proper irrigation (with drip system), no saucer to prevent standing water, universal soil with deep in my pots of gravel to promote drainage and fertilizing 4 times' years of manure.

the location of the plant and climate:
The plant is located in a terrace, fully exposed to the south and southeast and sheltered to the north and north-west, the sun takes throughout the day both winter and summer, my climate zone is a 9A / B (lLucca-Tuscany-Italy)

Links of the plant:
http://www.forumdiagraria.org/download/file.php?id=58227&mode=view
http://www.forumdiagraria.org/download/file.php?id=58228&mode=view

Thank you

It doesn't look too bad. The soil looks a bit wet in the second photo, but other than that it looks ok.

Welcome to the forum.

Welcome to the forum! Is is nice to have visitors share their citrus experience from around the world. Your tree looks normal to me for this time of year.

Thank you for your answers! Very interesting!

Citrus are plants that require a high level of nutrition in order to perform at an acceptable level, let alone at an optimal level. Manurers vary greatly in nutrient content. The age and the type of manure create many variables. This makes it almost impossible to know how strong it is. As a rule the older the manure, the less nutrient value. Rabbit and poultry manure are about twice as rich as that of horses, cows and pigs. Sheep and goats sit some where between the two. Manure is not very suitable for pots and containers due to their high salt content and low nutrition value. Generally, manure is only used in soil beds. I believe that your tree is not growing because it just is not getting enough nutrition. Even if you had been applying a high quality chemical fertilizer, fertilizing a container tree only 4 times a year certainly would not supply enough nutrition for a citrus tree. For a container citrus tree, once a month supplying the tree with the proper and required nutrition would be the bear minimum. If you don't feed the tree enough, it will not grow as it should. It is your tree, you can fertilize it as you please, but I certainly would never ever ever recommend manure for a container citrus tree. The best to you and this tree. - Millet

Hello Millet
What kind of nutrition like at my citrus?

About the yellowing of the leaves, maybe the plant need potassium, magnesium and above all iron. I say wrong?

A good fertilizer formula for citrus would be a formula with higher levels of nitrogen and potassium, and a low level of phosphorous, plus trace elements. Magnesium is normally supplied using Epson Salts (MgSO4). Add about a 1/4 teaspoon every second time you fertilize (if Mg is not already an ingredient in the fertilizer). I use a 25-5-15 With Trace Elements. Some growers on this forum use a 30-10-10 W/Trace Elements. - Millet

Thank You so much Millet!

Hows your tree going mate?
yellowing/going pale could be from too wet(i killed heaps like that!!!!)......plant could do with sitting high up in the pot too..I agree, pot looks big for plant size....Top half of mix needs to dry out some....in between waterings.....Thats the important zone.....Good luck.