Herbicides are used to control growth of small plants. Weedicides are used to control growth of weeds in specific. The main difference is that herbicide is a substance used to kill plants while weedicide is weedkiller.

Answer. Answer: The farmers should cover their nose and mouth with a piece of cloth during spraying of weedicides. This is because spraying of weedicides may affect the health of farmers.

Answer. Yes , The Right time of spraying Weedicide is after 32 – 40 days of Sowing . This time can be Extended to one more week . But not more than 40 days of sowing because the weeds had already cause damage to the crop .

Weeds are unwanted plants growing among wanted crops and compete with crop plants for sunlight, nutrients, water etc. Weedicides are the chemicals which are sprayed over field to get rid of weeds. They will not show any effect on crop plants.

Examples of weedicides: 2 4 Dichlorophenoxy acetic acid. Naphathelene acetic acid. Atrazine. Glyphospate SL.

Weedicides Containing Glyphosate, Used In Farming, Can Cause Cancer; Recent Study Confirms. In a recent study that has come up, it has been proved that rampant use of glyphosate has carcinogenic impacts, thus raising severe safety concerns.

Weeds: A valueless plant growing with the cultivated plants. By spraying weedicides, only weeds are killed but not our crop plants. This is because the chemicals used to prepare weedicides are specifically made for killing or destroying the weeds that’s why they could not harm our crop.

Chemicals that are used to kill plants or weeds are called herbicides. Soil surface application: Herbicides are usually applied to soil surface to form a uniform herbicide layer.

Weeds are small herbacious plants and weedicides are specific chemicals which affect only small plants. They do not have any major effect of crops. weedicides contain some chemicals which destroy the weeds . they do not harm the crop because they are used in a dilute form .

Weeds (plants growing where they are not wanted) reduce crop yield, increase production cost, and may harbour insects and diseases that attack crop plants. Methods employed to control weeds include hand weeding, mechanical cultivation, application of chemicals acting as herbicides, and a combination…

Examples :- Xanthium , fieldbindweed , Quack grass etc. Weedicides are the chemicals which help in killing the weeds which acts like a manure.

Weedicides are certain chemicals, which are sprayed in crop fields to kill weeds (weeds are harmful for crops). These chemicals do not cause any damage to crops.

Fertilizers and weedicides are used for improving the fertility of soil and for killing weeds…these are potentially harmful (can cause cancer and other health problems) for human and other organism…as it is applied on the plants on the field it will enter human system through run away weater after raining or …

Disadvantages of weedicides: It can lead to acidification of soil or make it alkaline. they can destroy the micro-organisms in the soil, leading to reduction in fertility of the soil. Weedicides can be severe skin or eye irritants, it can cause rashes and skin/ eye allergies.

Chemicals that drift out of your yard may travel to other areas and hurt wildlife or plants. The chemicals can wash away into nearby waterways or travel down into the groundwater supply. The weed killer may damage the environment and enter the human food chain and water supply.

Top 10 Pesticide Pros & Cons – Summary List

Another disadvantage of chemical pesticides is resistance. Pesticides are often effective for only a (short) period on a particular organism. Organisms can become immune to a substance, so they no longer have an effect. These organisms mutate and become resistant.

Disadvantages:

• Chemical fertilizers affect micro-organisms living in the soil.
• Chemical fertilizers are highly soluble in water hence they leach away into groundwater without fully benefiting the plant.
• Chemical fertilizers encourage plant disease.
• While the fertilizers help a plant to grow, they do not do much for the soil.

Though chemical fertilizers increase crop production; their overuse has hardened the soil, decreased fertility, strengthened pesticides, polluted air and water, and released greenhouse gases, thereby bringing hazards to human health and environment as well.

They may escape from the soil and pollute ground water, lakes and rivers. (ii)These can also kill bacteria and other micro-organisms in the soil which means some time after their use, the soil will be less fertile than ever before. (iii)The continuous use of chemical fertilizers has led to degradation of soil health.

Some of the harm chemical fertilizers may cause include waterway pollution, chemical burn to crops, increased air pollution, acidification of the soil and mineral depletion of the soil.

Use of excessive quantity of synthetic fertilizers are harmful for human health. It is contaminating the surface water via runoffs and its consequent effects. High levels of nitrates and nitrites in chemical fertilizer may cause some disease like hemoglobin disorders, Alzheimer’s disease and diabetes mellitus.