alfasitol

ALFOSITOLALFOSITOLALFOSITOL

ProtectionProtection & & PreventionPrevention

DISEASESDISEASES

MYCOSIS & MYCOSIS & MYCOSIS & BACTERIOSISBACTERIOSISBACTERIOSIS

MILDEW IN TOMATO PLANTSMILDEW IN TOMATO PLANTS

MILDEW IN TOMATOMILDEW IN TOMATO

Phytophthora capsiciPhytophthora capsici IN SWEET PEPPERSIN SWEET PEPPERS

Phytophthora capsiciPhytophthora capsici IN CAPSICUM PEPPERSIN CAPSICUM PEPPERS

Phytophthora capsiciPhytophthora capsici IN CAPSICUM PEPPER PLANTATIONIN CAPSICUM PEPPER PLANTATION

CLOSECLOSE--UPUP OF MILDEW IN POTATOOF MILDEW IN POTATO

MILDEW IN POTATO PLANTMILDEW IN POTATO PLANT

MILDEW IN POTATO PLANTATIONMILDEW IN POTATO PLANTATION

Erwinia sp. These bacteria basically cause soft rot in vegetables

(potato, carrot, cucumber, tomato, pumpkin, celery, lettuce, etc.), and also in fruit trees (pear, apple), in sweetcorn andornamental plants.

Erwinia cartovoraSoft rotOrnamental plantsErwinia stewartiiStewart wiltSweetcornErwinia amylovoraFire blightPear/appleErwinia tracheiphilaWiltCucumber, melon, courgetteErwinia cartovoraBlacklegPotatoErwinia cartovoraSoft rotTomato, lettuce, pepper, etc.

BACTERIADISEASECROP

Phytophthora sp. This fungus causes rotting of the root, tubers, stems, fruit

and leaves. The soft rot caused by Erwinia provides a point of entry for Phytophthora sp spores.

Phytophthora citrophthoraRotting of fruitCitrusPhytophthora cinnamoniRotting of rootAvocadoPhytophthora fragariaeRotting of rootStrawberryPhytophthora capsiciRotting of rootPepperPhytophthora cryptogeaRotting of rootTomatoPhytophthora capsiciRotting of fruitTomato, pepper, aubergine etc.

FUNGUSDISEASECROP

COMPOSITIONCOMPOSITIONCOMPOSITION

Esters of ethyl-amine copper and aluminium phosphonates. ALFOSITOL contains 35% phosphorous (P2O5) (49% p/v) and 3% copper (Cu) (4,2% p/v).

MODE OF ACTIONMODE OF ACTIONMODE OF ACTION

ALFOSITOL attacks micro-organisms directly . Depending on the dosage it has microbiostatic or microcidal properties. At a concentration of 0,5%, the population of bacteria is reduced 10.000 times after 28 hours, and that of fungii between 4 and 5 times. At 1% both the bacterial and fungal population are completely eliminated.

ALFOSITOL is a powerful activator of the synthesis of phytoalexinswhich help to prevent attack. It can be translocated prfectly throughout the plant, meaning that preventive applications can be carried out both on the root or leaf.

BACTERIOCIDAL AND BACTERIOCIDAL AND BACTERIOCIDAL AND FUNGICIDAL ACTIONFUNGICIDAL ACTIONFUNGICIDAL ACTION

ALFOSITOL has both bacteriocidal and fungicidal activity. This combination is important as it reduces or eliminates the wounds caused by bacteria which allow the entry of pathogenic fungal spores. The preventive effect maintains a high level of phytoalexins in the plant, which reduce damage when in contact with pathogenic agents.

A study of bacteriocidal activity (Erwinia cartovora) and fungicidal activity (Phytophthora citrophthora) of two products based on phosphonate esters, at different dosages and times.

Study carried out by the UNIVERSITY OF BARCELONA

ALFOSITOL ALFOSITOL ALFOSITOL vs vs vs ALIETTEALIETTEALIETTE

BACTERIOCIDAL ACTIONBACTERIOCIDAL ACTIONBACTERIOCIDAL ACTION


vsvsvsALFOSITOLALFOSITOLALFOSITOL ALIETTEALIETTEALIETTE

ALFOSITOL vs ALIETTE 0,1%

ACTION AGAINST ERWINIA CARTOVORA

1,E+00

1,E+02

1,E+04

1,E+06

1,E+08

1,E+10

1,E+12

0 h 8 h 8.5 h 28 h 52 h

C

F

U

/

m

l controlalfositolaliette



1,E+00

1,E+02

1,E+04

1,E+06

1,E+08

1,E+10

1,E+12

0 h 8 h 8.5 h 28 h 52 h

C

F

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/

m


ALFOSITOL vs ALIETTE 1%


1,E+00

1,E+02

1,E+04

1,E+06

1,E+08

1,E+10

1,E+12

0 h 8 h 8.5 h 28 h 52 h

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F

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m


ALFOSITOL vs ALIETTE 2%


1,E+00

1,E+02

1,E+04

1,E+06

1,E+08

1,E+10

1,E+12

0 h 8 h 8.5 h 28 h 52 h

C

F

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/

m


ALFOSITOL vs ALIETTE

INHIBITION OF THEGROWTH OF ERWINIA CARTOVORA

0

1

2

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5

0 0,1 0,25 0,5 1 2

dosage

m

m

ALFOSITOLALIETTE

FUNGICIDAL ACTIONFUNGICIDAL ACTIONFUNGICIDAL ACTION


vsvsvsALFOSITOLALFOSITOLALFOSITOL ALIETTEALIETTEALIETTE

ALFOSITOL vs ALIETTE

GROWTH INHIBITION

0

3

6

9

12

15

0 0,1 0,25

dosage in cc/100 o g/100

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ALFOSITOLALIETTE

CONCLUSIONSCONCLUSIONS

BACTERIOCIDALBACTERIOCIDAL EFFECTEFFECT- At a concentracin of 0,1%, both products reduced the population of Erwinia 10 timesfrom 28 hours after application (this could be considered as a bacteriostatic dose).

At 0,25%, Alfositol reduced the bacterial concentration 100 times from 28 hours after application, whereas Aliette reduced the concentration 10 times. These doses are morebacteriostatic than bacteriocidal.

At 0,50% Alfositol reduced the bacterial population 10.000 times from 28 hours after application. Aliette reduced it 100 times.

From 1%, both products had an appreciable bacteriocidal effect from 8 hours after application (the population of Erwinia cartovora was totally eliminated).

In the Agar disc diffusion assays, only Alfositol inhibited the growth of Erwinia cartovoraat 0,5%. Aliette did not inhibit growth at any concentration. This result could be due to the low solubility of Aliette.

FUNGICIDALFUNGICIDAL EFFECTEFFECT

At 0,1 and 0,25%, Alfositol reduced the growth of Phytophthora citrophthora by between 40and 70%. Aliette reduced it by between 30 and 50%.

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