The following trial, carried out in Mexico by the Autónoma Agraria Antonio Narro University, assessed the performance of Delfan® for melons cultivated in greenhouses and in two different types of soil (sandy and clay soils).

This study had the objective of analysing the influence of Delfan in both the physiological (photosynthesis, transpiration and use of water) and the morphological variables (root development and foliar surface) of the crop. It was also aimed at determining the effect on the yield and the general development of the crop.

The results of the study indicate that the response of the crop depends on the type of soil and the stage in the crop cycle. However, when Delfan was applied, a trend was observed towards increasing all the parameters mentioned above in both types of soil, which proves that the application of this product promotes the physiological activity, and favours the vigour, resistance and general development of the crop.

Figure 1 shows the significant differences between both types of soil, between Delfan and the control with regard to the root weight, yield and amount of fruit.


Trial conditions
• Research centre: Autónoma Agraria Antonio Narro University – Mexico.
• Date: September 2001.
• Crop: Melon. Durango Hybrid.
• Crop conditions: Greenhouse. Two types of soil (sandy and clay soil).
• Parameters assessed: Photosynthesis. Transpiration. Efficient use of water. Root weight. Foliar surface. Vigour. Resistance. Amount of fruit. Fruit weight. Total yield.

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