Speedfol™ Colour SP Has Positive Impact on Fruit Yield, Maturity, Colouring and Quality of Fuji Apples and Creates More Net Income for Growers

Today, the Fuji apple variety accounts for more than 70 % of the apple production in China. "Time to report on 2 recent trials to show the world how Fuji apples and Fuji growers benefit from Speedfol™ Colour SP" writes Susan Gu, SQM's Sales Coordinator for Specialty Plant Nutrition in China.

The 2 trials ran from late August till early October 2009 at 2 orchards in the Shandong province. Prior to the trials, both the control and the treated plots on both locations had been foliarly treated with Ultrasol® Magnum Flex Production and Ultrasol® Calmag. It should also be noted that all Speedfol™ Colour SP applications took place when the fruits were bagged. Table 1 shows an overview of the main data at the 2 locations.

On both trial sites the control plot was flood irrigated with well water only, whereas the treated plots each received 400 g/mu of Speedfol™ Colour SP at 3 consecutive times. The applications on site 1 took place on 14th August, 26th August and 18th September. On site 2, Speedfol™ Colour SP was applied on 11th August, 26th August and 18th September.

Trial site 1
Sitio de ensayo 1

Parameters / Parámetros

Trial site 2 / Sitio de ensayo 2

Sun Daoqiang

Grower´s name
Nombre del agricultor

Chi Lianqiang

Dochijia, Xiaomenjia,
Penglai, Shandong

Location
Lugar

Donchijia, Xiaomenjia,
Penglai, Shandong

Fuji

Apple variety
Variedad de manzana

Fuji

4 mu = 2.668m²

Apple variety
Variedad de manzana

3 mu = 2.001 m²

17 years
17 años

Orchard age
Edad del manzanar

19 years
19 años

45 trees/mu
45 árboles/mu

Planting density
Densidad de plantación

35 trees/mu
35 árboles/mu

Sandy loam
Franco arenoso

Soil
Suelo

Sandy loam
Riego rodado

Flood
Riego rodado

Irrigation system
Sistema de riego

Flood
Riego rodado

Well water
Agua de pozo

Irrigation water
Agua de riego

Well water
Agua de pozo

1 mu = 667 m² • 15 mu = 1 ha

Table 1. Summary table of the 2 trial sites.

Trial results and conclusions.
The results clearly show that after 3 applications with Speedfol™ Colour SP both growers obtained larger and heavier fruits with higher sugar content (Table 2).

The results also indicated that the treated fruits matured and coloured 3 to 7 days more rapidly, showed more uniformity in colour and had a higher density. The apples treated with Speedfol™ Colour SP could thus be brought to the market at an earlier stage where they were sold at a higher price which in turn raised the net income of the growers (Table 3).

Trial site 1 / Sitio de ensayo 1

Parameters / Parámetros

Trial site 2 / Sitio de ensayo 2

Control
Testigo

Speedfol™
Colour SP

Difference
Diferencia

Control
Testigo

Speedfol™
Colour SP

Difference
Diferencia

1.000

1.270

+270

Fertiliser costs (RMB/mu)
Costos de fertilizantes (RMB/mu)

900

1.100

+200

2.500

3.650

+150 (+4%)

Yield (kg/my)
Rendimiento (kg/mu)

3.400

3.600

+200 (+6%)

5,0

5,1

+0,1 (+2%)

Obtained market price (RMB/kg)
Precio de mercado obtenido (RMB/kg)

5,0

5,1

+0,1 (+2%)

17.500

18.615

+1,115 (+6%)

Gross income (RMB/mu)
Ingresos brutos (RMB/mu)

17.000

18.360

+1.360 (+8%)

13.000

13.845

+845 (+43%)

Net income (RMB/mu)
Ingresos netos (RMB/mu)

12.000

13.160

+1.160 (+10%)

11 mu = 6678 m² • 15 mu = 1 ha

Table 2. Table featuring the results for both trial sites. All dates are observation dates.

Trial site 1 / Sitio de ensayo 1

Parameters / Parámetros

Trial site 2 / Sitio de ensayo 2

Control
Testigo

Speedfol™ Colour SP

Difference
Diferencia

Control
Testigo

Speedfol™ Colour SP

Difference
Diferencia

21-09-2009

Lateral diameter (mm)
Diámetro lateral (mm)

29-09-2009

72,8

74,1

1,3(+1,8%)

68,8

78,8

10,0(+14,5%)

21-09-2009

Longitudinal diameter (mm)
Diámetro longitudinal (mm)

29-09-2009

58,7

59,3

0,6(+1%)

58,1

64,5

6,5(+11,0%)

31-09-2009

Average fruit weight (g)
Peso de fruta promedio (g)

03-11-2009

217

236

19(+8,8%)

217

235

18(+8,3%)

31-09-2009

Average sugar content(ºBrix)
Contenido de azúcar promedio (ºBrix)

03-11-2009

7,7

10,0

2,3(+30%)

7,7

10,1

2,4(+31,2%)

Table 3. Economic aspects of the applications for both trial sites.

Figure 1. Trial site 2. 21st October 2009. After the 3 applications and removal of the fruit bags. The apples on the right, treated with Ultrasol® Colour SP, clearly have a more uniform and more outspoken colour than the untreated apples on the left.

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