Job offersmore »

Tweeting Growers

Top 5 - yesterday

Top 5 - last week

Top 5 - last month

Exchange ratesmore »

Germany: What is going on with the tomatoes?

The changeable weather of this summer was an issue for tomatoes. According to data from the Chamber of Agriculture North-Rhine Westphalia most damages are split open fruits, or fruits with apical-blossom end rot. Some tomatoes show yellow or green shrouds or so-called gold-dots. 

The tomatoes are splitting open in a circular manner when the shoot tips are removed or when very hot days are followed by a rainy period. When the weather is hot, the plants are aiming to take in as much water as possible, if the weather then changes to rain there may be too much pressure on the skin and the fruit will split open. To prevent this, the plants should be watered less when the weather is frequently changing.

When the fruits are not ripening fully, it is called yellow or green shroud, caused by too much sun exposure. Other stressful factors, such as sporadic heat periods or a semi-ideal availability of nutrients can intensify the problem. In this case, plants should be shaded.

Apical-blossom end rot is a grayish-brown discoloration of the lower end of the fruit. This is caused by a shortage of calcium due to low pH levels. It can also be caused by too high levels of ammonium, potassium, magnesium and sodium, which can hinder the absorption of calcium and cause the end rot. Another possibility is when the soil is constantly too dry.

When the skin of the fruit is covered in tiny yellow/gold spots, there were too many calcium crystals stored in the skin. This can be caused by high root pressure, a wrong ratio of calcium and potassium or unfavorable air humidity.

Source: Chamber of Agriculture North-Rhine Westphalia

Publication date: 8/31/2017



Other news in this sector:

9/25/2017 "Nanotechnology helps save up to 50% of water"
9/19/2017 2nd Greenhouse and Hydroponic Technical Management Course for India
9/19/2017 Dutch grower boosts tomato yield in LED trial
9/19/2017 Hoogendoorn whitepapers on Next Generation Growing available via webinars
9/19/2017 Canada: Guelph and CFIA collaboration gets $320,000 investment
9/15/2017 Motorleaf reveals AI driven Tomato Yield Prediction solution
9/15/2017 Systems of pruning on Jigacho under greenhouse conditions
9/14/2017 Can food be produced on floating islands?
9/14/2017 US (NY): Aquaponics program teaches students what agriculture is all about
9/12/2017 Plant responses to environmental conditions
9/11/2017 Spain: INTIA’s 1st local Fertinnowa showcase event
9/11/2017 "Science and technology the answer to water quality"
9/11/2017 Jordan, Norway work together to grow food in the desert
9/7/2017 Autogrow announces hackathon to grow crops on Mars
9/5/2017 Hawaii: Ultra fine bubbles help lettuce grower reduce tipburn
9/4/2017 US (DE): Plasticulture strawberry planting and fall growth considerations
9/4/2017 Using water-driven injectors and fertigation systems
8/31/2017 Leaf sensors can tell farmers when crops need to be watered
8/30/2017 Finding of self-medicating behavior in bees not supported in further research
8/30/2017 $8.8m awarded to support innovation in US strawberry production