Platina Better berry size and berry shape of table grape

Composition

Foliar fertilizer (nitrogen N) based on tryptophan, a plant specific amino acid

Different from other amino acid fertilizers

Single amino acid (no chain)

Very small molecule

Very fast uptake

Only tryptophan (50 g/l)

N

CH2 CH

NH2

COOH

H

Different formulations !

Platina 50 : standard 50 g/l

Platina 33 : Netherlands 33 g/l

Platina 75 : Spain 75 g/l

Doses in this document Platina 50 !

Conversion factors

1,0 l/ha Platina 50 = 1,5 l/ha Platina 33

1,0 l/ha Platina 50 = 0,67 l/ha Platina 75

Increasing the fruit size of table grapes

Fruit size of table grapes

For table grapes, fruit size is of big importance

Especially in seedless varieties, fruit size is often insufficient

Stenopermocarpy seed abortion seedless grapes

Early seed abortion less sink activity fruit size

Use of Platina on table grapes

Dose: 2 x 1,5 l/ha standard orchard

Application: ± 1 and 2 weeks after full bloom

Combine with a thinning treatment with GA3 (Gibb 3) during bloom

Trial results

Platina Germany 2007

LVWO Weinsberg

Varieties: Artemis and Palatina

Objects:

Object Product Dose Time

Control - - -

Platina GA3 5 g/ha Full bloom

+ Platina 2 x 1,5 l/ha 5 + 10 days after full bloom

Platina Germany 2007

2,1

18,0

12,6

3,0

25,5

16,2

0

5

10

15

20

25

30

Fruit weight (g) Fruit length (mm) Fruit diameter (mm)

Control Platina

Platina gives bigger fruits and a higher fruit weight. This made the bunch weight increase from 200 grams to 422 grams!

Platina Germany 2007

2,3

3,0

0

1

2

3

4

Control Platina

Fruit weight (g)

Platina Greece

Platina leads to a stronger development of the vessels towards the grapes thicker fruit stalk better water and nutrition uptake less detachment of grapes during handling and storage

Platina Spain 2011-2012

University of Almeria

Variety: Crimson seedless

Objects:

Object Product Dose Time

Control - - -

Platina GA3 55,5 g/ha 7 + 14 days after full bloom

+ Platina 2 x 1,5 l/ha 7 + 14 days after full bloom

Platina Spain 2011

Object Yield

(kg/plant) Bunches per plant

Bunch weight (g)

Grapes per bunch

Fruit weight (g)

Control 32,9 56 587 112 5,23

Platina 38,7 67 576 107 5,44

Despite the higher number of bunches per plant, the grapes have a higher fruit weight after Platina treatment

Platina Spain 2011

Object Mid-harvest date L a b

Control 06/09 40,5 2,64 7,84

Platina 01/09 39,8 4,40 6,64

In warm climates coloring of fruits often is a problem. The higher a-value

and the lower b-value indicate a better coloring of the grapes after Platina

treatment, which led to an earlier harvest

Platina Spain 2012

Object Yield

(kg/plant) Bunches per plant

Bunch weight (g)

Grapes per bunch

Fruit weight (g)

Control 37,4 62 590 121 4,87

Platina 42,2 62 660 116 5,66

Significantly higher fruit weight after treatment with Platina, so higher bunch weight and higher yield

Platina Spain 2012

Object Fruit length

(mm) Fruit diameter

(mm) L/D ratio

Control 24,4 17,7 1,38

Platina 26,4 18,3 1,44

After treatment with Platina the grapes are slightly thicker and significantly longer fruit shape is nicer and commercially more interesting

Platina Spain 2012

Object Mid-harvest date L a b

Control 16/09 38,0 5,3 7,3

Platina 12/09 35,9 7,2 5,5

Again better coloring and therefore earlier harvesting

Platina Spain 2012

Clearly thicker fruit stalks, because of which the grapes have more growth potential and show less detachment from the bunch after harvest

2,99 3,77

0

1

2

3

4

Control Platina

Stalk diameter (mm)

Advantages Platina on grapes

Bigger grapes

More attractive fruit shape

Better coloring

Stronger fruit stalk