Very intelligent question. Fruit load surely brings down the size . Pruning does have definite effect on fruit quality. But I doubt in either case , TSS would be so much affected.

Very intelligent question. Fruit load surely brings down the size . Pruning does have definite effect on fruit quality. But I doubt in either case , TSS would be so much affected.

Thanks my dear Anoop and Monyer for your reply

If the trees production increase the fruits became small and decreases the total soluble solids.

Pruning in fruit trees is usually adopted to rejuvenate the lost tree vigor.And thereby , improve both yield as well as fruit quality. Some crops are highly pruning responsive , while others do not..

Dr Ghalib, in crop like citrus, we have observed reduction in fruit size at high fruit load , but without any distinct reduction in total soluble solids

I think that fruits reduction in size resulting from heavy load have no distinct effect on fruits TSS.

best regards dear Dr.Ghalib

I agree with Dr A K Srivastava Sir. But, we can't generalised such relationship between fruit load and TSS. TSS determined by many factors. The crop load modulates the light energy distribution in the plant canopy. On the other hand, the crop load determined the distribution of the photosynthate product on a plant. But plant nutrition, irrigation and genotypes of the crop regulates TSS.

TSS content with small size fruits may be less than normal size one, but the differences mostly not significant especially in citrus.

Many times we observe just reverse, small fruits have much higher TSS than bigger sizes fruits simply because of dilution effects

Very good discussion, I agree with the above answers, more fruit load reduces size, and small fruits are largely with less TSS (sugars)> But that is in general when we Discussed it as relation to fruit load.

But regarding pruning fruit trees that is reducing fruit number but enhancing fruit quality like as fruit weight, volume, dimensions, color, and also increasing fruit TSS and reducing total acidity. Improving TSS/ acid ratio hence advanced fruit maturity.

If tree pruning in any way cuts down the fruit quality , the very objective of pruning will be half achieved. Under such situation, do we need inputs like water and nutrients to back up the fruit load with quality...

If tree pruning in any way cuts down the fruit quality , the very objective of pruning will be half achieved. Under such situation, do we need inputs like water and nutrients to back up the fruit load with quality...

In eggplant, we found a significant negative correlation between TSS and number of fruits per plant and a non-significant correlation between number of fruits per plant and total sugars, but, the value is positive. Moreover, TSS and total sugars are significantly positively correlated.

Effect of pruning intensity on peach yield and fruit quality( Scientia Horticulturae Volume 125, Issue 3, 28 June 2010, Pages 218-221 )

Abstract: Light, medium and heavy pruning treatments were used with one unpruned as check (control) in Flordasun, Flordaking and Saharanpur Prabhat peaches. Fruit yield decreased with the increase in severity of pruning in Flordaking and Saharanpur Prabhat peaches, whereas, medium pruning treatment gave highest yield in Flordasun peach. Pulp weight, stone weight, pulp-stone ratio, ascorbic acid, sugar acid ratio and moisture content were not affected by pruning levels. However, fruit weight, size, TSS, sugar and acid content were significantly increased by pruning in Flordasun peach. Almost all the physico-chemical characters were significantly affected by pruning in Flordaking and Saharanpur Prabhat peaches, in which medium and heavy pruning treatments performed better, respectively

Thank you for your answers.

I noticed that the temperature rises with the big load of fruits, reduced the maturity and sugars.

I think that high temperatures at the maturity of fruits reduced the enzymes effective. And les change the starch to sugar. Heavy load reduced the share of the fruit of sugars manufactured in the leaves. This causes a decrease in the rate of TSS.

We also need to consider that following pruning , it takes one or two seasons to regain the full canopy volume for bearing fruits to its potential...

Thanks Doctor Anoop for the answer

I am also with you in this idea.

My small contribution

Thank Biserka Milic to answer.

your answer Explains the relationship in the content of total sugars

  Depends on the variety and fruits number/tress.

Biserka, your observations are very interesting , appreciate it..

The perennial fruit trees will behave quite differently , when you compare such relationship via number of fruits versus total soluble solids in un-pruned trees against number of fruits versus total soluble solids in pruned trees. Two types of trees will express themselves quite differently ..?

In general, reducing the number of fruits (crop load) e.g. by thinning, you increase the ratio number of leaves/number of fruits. Since leaves are the points where sugars are produced, increasing the above ratio means that more leaves produce sugars account for each fruit, so those fruits are likely to be sweeter, more tasty, with better colouration etc.

Dr, Anoop, and Christos, Thanks to answer.

Reduce the number of fruits on the tree,

Increase its share of sugars manufactured in the leaves

Provided that feed the tree be good. , and depend on the variety.

In fact, we know leaves are the factories for producing carbohydrates and must keep them against pests and so on. In other hand the the number of leaves/ per fruit recommend. I think TSS reduces by increases by fruit loads. Of course, this is one of the horticulture principles, but maybe there were some excepts.

Any significant differences observed could be attributed to many things including light exposure-fruit position on tree, soil nutrient, tree health and the maturity status of fruits you are comparing.

Excepts in any science make it important and there is little value without these kinds excepts for any science, definitely. I"m sure this case is about this subject.

Please check this article

http://www.inhort.pl/files/journal_pdf/Suppl_2_2006/Suppl_2_full_10_2006.pdf

Interesting discussion. How to achieve the high yield with all fruit quality attributes , TSS being one of them...

In principle , if there is a higher fruit load on a tree but within its bearing capacity ( not exceptional fruit load) , I don't think TSS will go down..This is what exactly,Biserka has also presented..

To answer this question we need to think from the view point of source - sink relationship. in short, when there is an increased load, there is a general tendency to drop tss but ut also depends on other factors including the varieties.

I agree with with whole ideas above and we shouldn't continue more this discussion. The negative correlation with excepts is the answer.

I agree with with whole ideas above and we shouldn't continue more this discussion. The negative correlation with excepts is the answer.

These days , there is a popular term called Brix farming. Why should you have high fruit yield with lower TSS , if there is a empirically defined negative relation between hight fruit load and TSS...? Just to have some logical discussion...friends