THE NOVEL APPROACH OF FARMING.

THE NOVEL APPROACH OF FARMING.

Evaluation of performance of SANBIO ferti-activators EPSOMIT and PLANTA on the productivity of citrus variety `Washington Navel´ in Tunisia

Bouargoub, Tunisia (March 04, 2016) – Citrus are strategic fruits of the Tunisian agriculture sector. Maltese oranges, navel oranges, clementines, lemons, and mandarins are the leading citrus crops grown in Tunisia. Production has steadily increased during the last decade mainly for export into EC. However, the farmers facing to huge challenges at the time, climate change, water supply, diseases and increased production costs.

The SANBIO ferti-activators can control biotic and abiotic stress and have positive impact to vegetative and resistive processes.

The aim of this study is to evaluate the effects of simultaneous use of SANBIO ferti-activators EPSOMIT and PLANTA on productivity and quality of citrus variety ´Washington Navel´.

This project is being carried out within the collaboration between the Laboratory of Plant Genetics and Molecular Biology, Department of Biotechnology and Plant Sciences, National Agronomic Institute of Tunisia, the Centre technique des Agrumes, the grower CITRUMED and SANBOS GmbH, Germany.

1.  Materials and methods

Table 1. Basic data

Season 2016
Location Tunisia, Bouargoub  

Picture 1: Orchad
Responsible organization Laboratory of Plant Genetics and Molecular Biology, Department of Biotechnology and Plant SciencesNational Agronomic Institute of TunisiaCITRUMED
Crop Citrus
Variety Washington Navel
Trial field 1 block system, 180 ha
Pesticides none
Irrigation drip irrigation
Test product Sanbio EPSOMIT / PLANTA, manufactured by SANBOS GmbH, Germany
Application 1.5 kg SANBIO PLANTA + 500L water per ha, soil application 1 kg SANBIO EPSOMIT + 500L water per ha, foliar application, 14 days later
Date of planting 1990
Date of application 05/2015
Date of harvest 09/2015
Scoring Yield, caliber, quality

2.   Results

Table 2. Productive performance on variety ´Washington Navel´

Parameter

Unit

Control

SANBIO

Trend

0

1

2

0

1

2

Fruit weight total

kg

1030.34

905.60

942.70

1456.83

1053.86

1655.23

Average

kg

959.55

1388.64

+45%

Juice weight

kg

479.68

417.87

405,50

636.81

500.85

755.15

Average

kg

434.35

630.94

+45%

Juice volume

L

474

419

405

645

482

747

Average

L

432.67

624.67

+44%

Juice volume / fruit weight total

%

46.00

46.27

42,96

44.27

45.74

45.13

Brix

%

12.5

12.9

12,9

12.6

13.20

12.20

Average

%

12.77

12.67

-1%

NaOH

12.60

13.6

13,40

10.40

12.80

11.7

12.97

12.97

Acidity

%

0.81

0.87

0,86

0.67

0.82

0.75

Average

%

0.84

0.74

-12%

Maturity

15.50

14.82

15.04

18.93

16.11

16.29

15.12

17.11

+13%

Diameter

cm

81

72

75

85

90

87

cm

78

83

79

86

77

101

cm

85

73

74

95

81

88

cm

85

79

86

87

74

92

Average diameter

79.2

86.9

+10%

Figure 1. Yield of fruits and juice of citrus variety ´Washington Navel´

Figure 2. Fruit quality of citrus variety ´Washington Navel´

Picture 2-4. Trees and fruits form treated plot

3.  Conclusion

To summarize, the present study shows significantly positive effects by use of ferti-activators Sanbio PLANTA and Sanbio EPSOMIT on productive performance of citrus.

The positive effects at glance:

  • Significantly higher harvest (fruit weight, juice volume)
  • Increase of size of fruits (caliber)
  • Better quality of fruits (color, maturity, sugar content, acidity).