Biohumigat for greenhouse table grapes - to be one step ahead of everyone
|We already witnessed impressive results for Biohumigat treatment of greenhouse table grapes in terms of fruit size|
|Yakov Henig,M.Sc Agronomist, Gat Fertilizers, firstname.lastname@example.org|
|October 21, 2019|
Furthermore, growing table grapes in greenhouses is a common practice in relatively warm areas (mainly in the Jordan Rift), enabling an earlier grape cultivation period. The vines are awakened through early pruning and chemical stimulant spray, so that the winter serves as a growth period. In this way the vine grows in non-optimal conditions of cold and even frost at night, and on the other hand is sometimes overheated in the greenhouse.
The experiment took place during the 2017-2018 winter at Moshav Bekaot, located in the higher Jordan Rift. It was conducted in a greenhouse vineyard, using a random block design- 4 trials and 4 control rows.
The treatment was continuous fertilization with Biohumigat by a dosimeter. The measures studied constituted Leaf Area Index (LAI), number of clusters, yield weight, average cluster weight, grape weight and sugar level (Brix). All treatments in the vineyard were carried out standardly by the farmer without our interference, including the harvest. Grapes were harvested selectively at three different dates, in order to ensure marketable quality fruit in terms of grape size and appropriate sugar level (Brix14.5<.0)
By contrast, the grape weight was consistently greater with Biohumigat for all 3 harvests, and the cluster weight (Graph 1) was significantly greater (p<0.1), so that each cluster was larger and better suited for marketing as premium fruit.
To summarize - in this season we already witnessed impressive, interesting results for Biohumigat treatment of greenhouse table grapes, in terms of fruit size and the early harvest. As a result, the experiment is planned to continue next year as well.
This article was published in the special issue for FWD 2019