the Nematodes

 What is the difference between systemic and non-systemic pesticides?

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 💊 systemic pesticides:

 - Pesticides/toxins absorbed by the plant through leaves or roots and apply with plant juicer to all parts of the plant, including modern growths that appeared after spraying.

 - Systemic pesticides are considered economical compared to non-systemic pesticides, they are used in small quantities, because covering the plant completely with spray solution is unnecessary because the pesticide is moved to parts that are not covered with spray solution.  The number of transactions in the case of systemic pesticides is low as a result of the pesticide's transmission of modern growths and their protection from infection.

 - The effect of systemic pesticides on vital enemies is relatively small, especially when used with irrigation water/water or in the treatment of seeds where the toxic substance is found in the plant juicer, exposed to absorbent insightful pests or absorbent maids and not to vital enemies.

- Some systemic pesticides are converted into more toxic compounds within the plant that can help contaminate food by transferring quantities of them to fruits or parts eaten from crops, so they cannot be used near the maturity of the crop and it is not useful to wash fruits before eating to get rid of or reduce their toxicity.

 - Re-spraying in the case of systemic pesticides is not required as a result of rainfall after the spray solution is dry from the plants, because the pesticide has moved into the plant and has become part of its juice.

 - Most circulating systemic pesticides have the characteristic of moving upwards while not moving or less efficiently moving from the upper (leaves) to the lower (leg and roots) and therefore cannot be used as a spray to combat leg and root lesions and this can be done by watering.

 - Systemic pesticides are more specialized and have an impact on insightful lesions/absorbent throttles and have limited impact on bitumen lesions, and their overall effect is slow.

- Systemic pesticides are divided by the fabric of the plant in which they are transmitted to: Symplastic, Apoplastic wood.

 It is divided on the basis of its decomposition into: stable constant, which is pesticides that do not receive any change and remain constant within plant tissues without decomposition and there is no organic chemical pesticide used at present with these specifications and it can be said that selenium element of fixed systemic elements, endolytic systemic pesticides, which when entering the plant are effective in their first form against the pest until they decompose into non-toxic substances by the plant,  Endomatetoxic activatable systemic pesticides, which, after entering the plant in their first form, are transformed into more toxic compounds of the lesion within plant tissues with the effect of enzymes within the plant.

 Examples of systemic pesticides circulating in Yemen include:

 * Systemic insecticides: acetambride, amidaclopride, thiamthoxam (nikonoid group).

 * Systemic fungal pesticides: metalaccell, azoxystrobin, divinoconazole, hemxazool, triadiminol ...  etc. 

 This one..  Systemic fungal pesticides are preventive and therapeutic pesticides.

Non-systemic pesticides:

 - These are superficial pesticides that do not apply to plant succulents as in systemic pesticides.  It works through contact or stomach.

 - The plant should be fully covered with spray solution in the case of non-systemic pesticides.

 - The non-systemic pesticide should be re-sprayed if the rain falls after spraying it, because it is superficial and washes.

 Non-systemic pesticides have a rapid and immediate effect compared to systemic pesticides. 

 - Non-systemic pesticides can be used in the fruiting stages if necessary, because washing fruits with water before eating reduces their toxicity.

 - Non-systemic pesticides affect a wide range of harmful and beneficial organisms (biting, insightful/absorbent, absorbent and stinging organisms ... Etc.).

 Examples of non-systemic pesticides 

 * Non-systemic insecticides:

 Deltametherin, Lambdasihalothrin, Fenpropathrin, Cephalotherin (Pyrothroide Group).

 * Non-systemic fungicides: sulfur compounds, copper compounds. 

 This one..  Non-systemic fungicides are preventive pesticides that are often used before infection occurs.