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INTRODUCTION

The Almeria province represents a reference area for the intensive production of vegetable species into greenhouse, both for the great area extension, the high productivity and, above all, for the high technical level of the sector.

For this reason we have chosen this area to carry out a series of tests with the product Garbi, in order to improve the productivity of the more representative crops of this area.

The product Garbi contains Nitrogen (2 %), Phosphorus (8 %), Potassium (7%) and amino acids (3,4 %); its aminogram is designed to act on the metabolic pathways of the plant inducing the synthesis of auxins; which have a direct effect on cell proliferation and differentiation. The amino acids contained in this product are completely synthetic, in this way it is possible to control with maximum accuracy the concentration of each one of them, thus ensuring the quality of the product and the homogeneity in the response of the plant.

Trials with Garbi were carried out by an external company, E0R certified.

 

MATERIALS AND METHODS

We selected three experimental plots of tomato (var. Razymo), pepper (var. Melchor) and zucchini (var. Sinatra) located in Almeria (respectively in La Mojonera, El Ejido and Roquetas de Mar). Each test was conducted dividing the plot in random blocks, with four replicates per treatment.

All applications were carried out through foliar treatment using a backpack sprayer with 8 bar of pressure; the product was tested at a dose of 0.25ml/L.

In tomato plot we used a range of 824-988 l/ha of water for treatment; a total of 9 applications (a-i) were carried out with an interval of 9-13 days between them. The evaluations were made at the 6th day from the application “f”, 7g, 5h, 5i.

In pepper we used a range of 390-522 l/ha of water per treatment; a total of 7 applications (a-g) were carried out with an interval of 13-17 days between them. The evaluations were made at 14 days after application “c”, 11d, 13e, 16f, 6g.

In zucchini we used a range of 691-840 l/ha of water per treatment; a total of 8 applications (a-h) were carried out with an interval of 5-9 days between them. The evaluations were made at 13 days from the application “a”, 6b, 3c, 5c, 7c, 9c, 2d, 4d, 6d, 1e, 3e, 5e, 1f, 3f, 5f, 1g, 3g, 5g, 7g, 2h, 4h days after application.

In each plot of the three crops it was recorded data related to both fruit weight and number, in a sample of 10 plants per plot.

 

RESULTS


 *in parenthesis marketable fruits with good morphology.

 

Zucchini

The main problem of the zucchini crop is obtaining a complete fruit setting and a good morphology, very important for this market, especially when the temperatures are not very high and fruit setting decrease. The product Garbi has proved to be a valid tool to prevent this type of problems, increasing a 27 % the number of marketable fruits. The implementation of Garbi contributed to increase the size of the fruits a 24%, compared with untreated fruits; statistical analysis of the data has allowed us to determine that such increase is significant. The productivity of the plots treated with Garbi was increased approximately a 2380 Kg/ha, a 9% of the total; however, this result should be even greater when considering only the marketable fruit obtained in each plot.

 

Pepper

The total amount of fruit harvested increased in plots treated with Garbi, reaching an estimated mean values of 9.24 Kg harvested in 10 plants. On the contrary, in the untreated plots, approximately 8.23 Kg in 10 plants were harvested. The final increase of 14.3 % of total fruit recollected in plots treated with Garbi was equivalent to 2000 Kg/ha.

Also the number of fruits harvested increased in plants treated with Garbi, reaching average values of 42 fruit harvested in 10 plants, while in the untreated plants were recollected 39 fruits. Relatively to this parameter, the increase in the treated plots was 7.7 % compared to the untreated plots. In regard to the average weight of the fruit, in plants treated with Garbi it was 222.3 g/fruit against 207.0 g/fruit observed in untreated plants.

 

Tomato

In the evaluations of fruits production it was possible to observe an increase in the plots treated with Garbi, reaching values of 52Kg harvested in 10 plants. On the contrary in the untreated plots was recollected totally 46kg in 10 plants. The final increase was 12% equivalent to 7200 Kg/ha.

Also the number of fruits harvested increased from the seventh application reaching values of 418 fruit harvested in 10 plants treated with Garbi, while in the untreated plants only it was recollected 385 fruits. Relatively to this parameter in the treated plots was recorded an increase of 8% compared to the untreated plots.

 

CONCLUSIONS

Garbi has improved the performance and productivity of the three crops studied: zucchini, tomato and pepper; in tomato and pepper it was possible to observe an increase in number of fruits and also in the average weight of each fruit. In the case of zucchini the number of marketable fruits and their average weight have been increased thanks to the Garbi treatment in spite of the fact that the number of total fruit has been greater than in the un-treated plots; this indicates that Garbi contributed to improve the morphological development of fruits and its setting avoiding the production of fruit with no commercial value.


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