Common asparagus beetle

asparagus beetle ( Crioceris asparagi ) is a major, host-specific pest of asparagus in most asparagus producing regions of the world. Damage symptoms Both adults [...] have two distinctive rows of white or yellow spots. Eggs are oval and black to greenish brown and laid singly or in rows of 3 to 10 eggs, standing per [...] adults and larvae feed on the leaves of asparagus. As the larvae feed, they secrete a blackish fluid, consisting of faecal material, which may contaminate

Pepino mosaic virus

can be observed. In Europe, the Chilean strain (CH2) is dominant and present in 90% of the infections. If more strains are found in case of infection, the [...] different levels of aggressiveness in the plant and, as a consequence, in the severity of the symptoms and the damage they cause. For example, there are very [...] – which isolate of which strain – that causes the infection is one them. The moment in the crop cycle when the infection takes place is another factor that

How to protect bumblebees from heat

a temperature of 28°C inside the hive in any environmental conditions. Above 28°C the pollination capacity is reduced as their activity is focused on cooling [...] The study of climatic and environmental conditions in which bumblebees need to operate in various countries worldwide conducted over a period of 35 years [...] be reduced if the humidity is too low or radiation is too high. In conventional greenhouses, the recommended humidity range is 60-75%. Due to better air

Better insights and digital advice with Natutec Scout

metre or a few thrips in your plant, there is little to be concerned about – and little sense in the software reporting these kinds of measurement. The threshold [...] start thinking of strategy changes that can be made. In this era of viruses affecting both people and crops, that’s extremely important. There is no, or only [...] level of infestation exceeds the threshold, it’s a signal to the grower that he needs to take action. This is how Barry Enthoven of Lema Tomaten in Naaldwijk

Glasshouse potato aphid

lifecycles. There is no alternation of hosts, and the two types of life cycles occur on the same host plant. The aphid can overwinter not only in greenhouses [...] potato aphid ( Aulacorthum solani) is a native European species of aphids , seriously affecting crops of sweet pepper in particular. These aphids further [...] the fruit of sweet pepper it secretes a toxic substance, which leads to deformations in the growing tip of the plant. Precisely where the plant is pierced

Bugs

extracting nutrients from them, resulting in deformations and puncture holes. The most obvious damage is the deformation of growing points. They also cause tissue [...] and yield loss. Effective bug control is key to maintaining healthy, high-quality crops. Biological control of bugs combines targeted monitoring and natural [...] about What are bugs? Heteropteran bugs form a group in the order Hemiptera , a highly diverse group of insects, containing both harmful and beneficial species

Long-tailed mealybug

effect is a reduction of photosynthesis and therefore the yield. Flowers and fruit often drop off. Plant sap is rich in sugars, but low in proteins. In order [...] occurs naturally in tropical and sub-tropical regions, but these days it is widespread throughout the world. The range of host plants of Pseudococcus longispinus [...] an adequate intake of protein, mealybugs must therefore ingest large quantities of sap, getting rid of the excess sugars in the form of honeydew. Charac

Protected vegetables

Common pests in vegetable crops Vegetable pests can inflict serious damage in terms of plant growth and crop yield. The most common pests in vegetable crops [...] insect pests like whitefly and thrips. Diseases in vegetable crops There are different types of diseases in vegetable crops that cause harm to the plants [...] management in vegetable crops Biofungicides are an important tool in the arsenal of sustainable farming practices for controlling diseases in vegetable

Cotton aphid

therefore need to extract large quantities of sap to get sufficient protein. The excess sugar is secreted in the form of honeydew, making the crop and its fruit [...] cotton aphid ( Aphis gossypii ) is distributed throughout the world but prefers the warmer regions. It has been a pest in European greenhouses since the [...] balance of growth hormones. As a result, the plant’s growth is retarded giving rise to deformed leaves or, if the infestation occurs early enough in the season

Maize

the indigenous communities in Mexico and it still plays a main role in the preparation of Mexican food dishes. The leafy stalk of the maize plant produces [...] as starch in cooking practices. Nowadays, maize is extensively cultivated all over the world. When it comes to numbers and volumes; there is more maize [...] maize produced every year (in terms of weight) than of any other grain.