Laeveld_Agrochem_GROEI_20_-_Winter_2022.pdf

toediening is die osmotiese druk aan die buitekant van die hifes groter as die osmotiese gradiënt wat in die hifes is. Dit lei tot die versteuring van die hipale [...] word mits daar onder die grond gekyk word om te bepaal wat die aard van die probleem is; waar in die boord (of soms buite die boord) die oorsprong is; en hoe [...] AgriCure SP en die ontblote metielgroepe van die waslaag op die lug-/blaarintervlak van die plant. Sien reaksie op Figuur 1. Deur die reaksie word die metielgroep

Tomato

tomato types are so-called ‘tender’ or ‘half-hardy’ perennials. The plants die every year in temperate climate, but in greenhouses they can sometimes sustain

California red scale

shoots and branches. The fruit can be affected at all stages and may even die. The stem can also be severely infected and appear completely covered with [...] especially in the case of young citrus. Young trees can suffer greatly and die if the branches are lost. Solution Finder Find solutions for your crop Damage

Cyclamen mite

arrested and the flower buds are so badly affected that they shrivel and die. Damaged strawberry leaves are wrinkled and irregularly folded. Affected plants [...] short. Severely attacked leaves become brittle, turn brown or silvery and die. Flowers and young fruits become brown near the base. Solution Finder Find

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Spider mites and other mites

as more cell sap is removed, the leaf, and eventually the whole plant may die. The nymphs and adults also produce webs, and plants can be completely covered

Aphidius colemani

aphids to drop from the leaf and fall to the ground. Although many aphids die as a result, many will survive and migrate to other plants to begin new colonies [...] aphids produce a mummy similar to that of Aphidius spp. The aphids do not die at once but usually continue to feed and secrete honeydew. Second and third

Fusarium wilt

which can be seen when the stems are cut. In banana, whole plantations may die and the soil may not be suitable for planting for many years to come. Solution

Thrips

tissue and sucking out their contents, causing the surrounding tissue to die. The resulting silver-grey patches on leaves and the black dots of their excreta

trial results wireworm control

large numbers. The pest insect stops feeding soon after being infested, and dies within a few days. The nematodes that emerge then start their search for