Apple post harvest Spray Nutrition management |Nutricomplex Gold 6-27-0|Tradecorp 2021
Channel: Smart Farming
Date: 11/08/2021

*Foliar Application for After Harvest* :- 

Cobre+Nutricomplex Gold 6-27-0

*Cobre*:-  *Cobre is a liquid copper based  product with Antifungal Action and A new HPC Nano  technology which make it highly absorbable in plants,* 
*Cobre is very safe ( no side effect, and it's completly residue free) and a very effective Liquid Copper*

*Nutricomplex Gold 6-27-00 :-  It is a balance mixture of different essential plant Nutritional elements like*
*Nitrogen - 6%, phosphorous-27%, Sulphur-21.5, Zinc-5%, 
Magnese-3%, magnesium-3% , glycene betadine-6%, faulvic acid -1.7%, Molybednum-0.12%, Boron-0.5%
*Nutricomplex gold will help in to make buds stronger for next year and help to store energy in tree which will tree use for bud break, flowering  and pollination in next year*

*Post-harvest nutrition is a key event in the orchardist’s calendar. Once the fruit is off the tree it’s time to replenish the tree’s reserves for next season*

Timing
The best time to apply post-harvest to maximise nutrient uptake the leaves need to be in good condition and fully functioning.

Root activity is also largest immediately post-harvest so maximise this by methodically applying post-harvest fertiliser to each variety as soon as possible following the last pick.

Which nutrients are most important post-harvest?

We advocate a nice simple message with regard to nutrition and that is:

“You can’t manage what you don’t measure.”

Make sure you’re taking sufficient soil, leaf and fruit tests to know what nutrients you need to address. The most likely ones you can do something about post-harvest are nitrogen, boron, zinc and magnesium.

Nitrogen (N)
Ensuring the floral buds have adequate nitrogen is vital to their viability, which is their ability to set fruit. It also lowers biennial bearing tendencies. Autumn is the best time to apply nitrogen to ensure adequate nitrogen is supplied to the floral bud. It has minimal effect on spring shoot growth but has the highest impact on final fruit set compared to applying nitrogen in spring or summer.


On soils where soil nitrogen reserves are known to be low, a soil-applied solid nitrogen will also be needed. Try to target 40 per cent of the total trees’ nitrogen requirements post-harvest.



Signs of low nitrogen status include:
Poor fruit set
Small fruit size relative to crop load • Enhanced fruit colour development
Small, pale green foliage
Early onset of autumn foliage colour development and premature leaf drop.
Boron (B)
Boron is most effectively applied immediately post-harvest. Boron is needed for pollen tube formation and therefore fruit set. Good boron levels mean more seeds are set; the higher the seed numbers, the higher the calcium levels in the fruit.

Zinc (Zn)
Zinc is an often misdiagnosed, under-rated or ignored trace element, yet a zinc-deficient orchard will be responsible for significant production losses if not addressed. Zinc is important for the formation and activity of chlorophyll and in the functioning of several enzymes and the growth hormone auxin.

Low levels of auxin, as a result of zinc deficiency, cause severe stunting of leaves and shoots, commonly known as ‘little leaf syndrome’. It can also be responsible for blind buds. Symptoms can be erratic whereby some branches show symptoms and others don’t.

Unlike boron, zinc does not have any direct effect on pollination and fruit set, however, with low levels of zinc, bourse leaves never become fully expanded resulting in less carbohydrates for blooms and developing fruit. Research has shown that a positive relationship exists between bourse plus spur leaf area and calcium accumulation in the fruit; the larger the bourse plus spur leaf area, the higher the fruit calcium levels.

Soil applications are ineffectual because zinc reacts with the organic component and other minerals in the soil and is quickly rendered unavailable to the tree. Therefore foliar sprays must be used. However, zinc sprays can russet the fruit and therefore great care is required if treating trees that still have fruit on them.

Post-harvest sprays are therefore the best opportunity to get zinc into the tree, allowing this trace element to be translocated back into the tree and buds as the leaf senesces. Mid-dormancy winter sprays of higher rates of zinc sulphate can also be used but these must be applied well before any bud movement to avoid bud damage. Apply zinc before any oils go on.



Magnesium (Mg)
Magnesium is the central molecule of chlorophyll, the green colour of the leaf. Without it, photosynthesis cannot occur. Other equally important but less known roles of magnesium include: energy transfer; cell wall formation; protein, starch and oil synthesis; and it assists with nutrient uptake from the soil to the roots, especially phosphorus. Magnesium is very mobile in the plant and so a deficiency is first seen in the older leaves*