As you know, weeds compete for food , water and sunshine , the vegetables grown slowly growing weed is unhealthy and housing. Hiding in the weeds, pests and pathogens that cause damage to vegetation, both direct and indirect, for example.
G leads to reduced yields. This implies that the growth and yield of crops decreased.
B. Therefore, the quality of the output decline. Because of the contamination of weed seeds
C. A source of shelter and housing . Diseases and pests
D . Impede the performance of the converter , such as spraying , fertilizing and harvesting.
E . Obscured the sun , the vegetation and weed stems, but stretched thin and plump.
F . It is dangerous to humans and animals . Certain weeds cause irritation. And may be toxic to humans and animals .
++ Types of weeds found in vegetable plots ++ .
Weeds that grow in a wide variety of vegetable crops . But will vary by location and plenty of water and fertility of the soil , most weeds are weeds or biennial last about 1-4 months. If known species of weeds and allows us to find or how to prevent it. And disposed of properly and effectively.
* 5 Agricultural Research and Extension Agricultural Research . University Based on the division of weed science base into 3 groups.
1. Grass narrow leaf weeds (Grasses weeds) Narrow leave most of the monocot weeds . Grow from seed to maturity, and then fall into the ground. On the right, it will grow. The development is part of the shoot or leaf covered . Veins are parallel With herbaceous weeds and weeds over the years .
1.1 biennial weeds, weeds or weed seeds are ripe , the seeds . And the seeds fall to the ground and dies, it will be like .
- Grass Nongtinnok Digtaria adscendens L.
- Grass and white flowers Leptochloa chinensis Ness.
- Pink grass Echinochloa colonum (L.) Link.
- Barnyardgrass Echinochloa crusgalli (L.) Beauv.
- Grass Nongtinnok Eleusine indica (L.) Gaertnet.
1.2 The first weed is weed that was propagated by. The seeds can be used other than as part of the stems, roots, stems, stalks flow or accumulation in the soil. When cut or eliminate the above ground . Will not die, but it can grow and break new trees from different parts of the underground as well.
- Thatched Imparata cylindrica (L.) Beauv.
- On foot grass Brachiaria reptans (L.) Gard & CE Hubb.
- Help Search Cynodon dactylon (L.) Pers.
- Grass Brachiatia mutica Forsk.
2. broadleaf weeds (broad leave weeds) are both types of weeds dicotyledon and monocotyledon . Most of them dicotyledon . Relatively broad leaves Reticular veins are Most of the vegetables as they
- Purslane Pertulaca oleraoea L.
- Draper Trianthema portulachastum L. Stone
- Spiny amaranth Amaranthus spinosus L.
3. They kg (Cyperaceae Weeds) weed species the leaves are long and slender. The trunks of the triangle As well as herbaceous weeds and weeds over the years as well.
- Sand Cyperus iria L. Reed
- Purple nutsedge Cyperus rotundus L. ( reed : Sedges).
++ How to eliminate weeds in vegetable ++ .
In defense Weeding in vegetables , there are many ways. Most used a combination of two ways to go, but it will depend on the type of weed. And the size of the planted area Default or to prepare the area for growing vegetables , it must prepare the soil well before planting. Vegetables will help weed problem is very slow . After Harrows The sub- soil As a pervious regularly. And should scavenged parts. Weed out the such as grass stalks of purple nutsedge tubers air flow grass stalks, grass , then the plot .
- Use a shovel to clear or hand tools (Machanical Control) (Hand Heoing) after farmers watering already . Therefore, the removal of weeds It will save you time and should have pulled weeds while weeds are small . Available in Block or small space . Use a shovel to clear or I have wasted so much time And labor-intensive as well
- The use of mulch (mulching) method will cause the weed seed can not sprout up. If not , it will be very slow And also helps retain moisture in the soil. The material used to cover the straw , grass, nuts , etc .
- The use of chemicals (Chemical Control) This method is effective in converting large areas , such as the planting of garlic, cabbage Cauliflower , onions, shallots, so farmers can not be removed by hand. use a shovel to clear it up or Because labor costs are high Rare and agricultural workers Therefore, the use of chemicals to prevent Weeding . Therefore it is absolutely necessary . The user must know the nature of agricultural weeds to prevent disposal and must know how to use chemicals, well and accurately Such as how to use the features of the destruction of the chemical. The duration of the use of chemicals. Protection chemicals into the body. Landform and Safety To use chemicals to prevent Weeding ineffective. effective And uneconomic
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