George has been active in the field of agriculture for more than 30 years, 19of them at Hazera. Before George joined Hazera, he worked in the field of vegetable cultivation and plant protection at the Israeli Ministry of Agriculture. George has a graduate degree in Plant Protection. The primary crops George dealt with are tomatoes, melons, watermelons, onions and leafy plants. George’s primary field of expertise is the examination of new varieties during the early cultivation stages, and their modification for the relevant cultivation regions and countries. In recent years, George has served as the Product Promotion manager for tomatoes in major target countries for Hazera tomatoes.
by Ricardo, Sao Paulo, Brazil
I am a farmer growing Carmen tomatoes near Sao Paulo, Brazil (Planting 10 January). I have a problem with fruit coloration – the upper part of the fruit is turning from red to yellow.
Can you please tell me what is the reason and how can I avoid these symptoms? Continue reading
We have planted tomatoes in our greenhouse using original hydroponic system. The sowing date was September 10th and transplanting was on the 25th of same month. The harvesting started at the beginning of January. The problem, as you can see in the enclosed photo, is the yellowing of leaves during the winter season. Though leaves of some varieties have recovered as temperatures became warmer, other varieties are still yellow. Our local expert suggested that one of the reasons might be the low temperatures, as greenhouse temperature dropped to 10°C on several occasions. However, he thinks that fertilization might also be involved. I would appreciate your opinion as to what could have caused this problem and ways to avoid it. Continue reading