What are the objectives of fertilizer?

The objectives of use of chemical fertilizers on the environment are given below: To enhance the nutritive value of food to decrease the food security.To help to enhance the number of crops. To kill some harmful micro-organisms or shrubs etc present in the crop to increase the quantity.

What are the effects of chemical fertilizers on human health?

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.

What are the objectives of pesticides?

Pesticides are used to control various pests and disease carriers, such as mosquitoes, ticks, rats and mice. Pesticides are used in agriculture to control weeds, insect infestation and diseases. There are many different types of pesticides; each is meant to be effective against specific pests.

What are the benefits of chemical fertilizer?

Chemical fertilizers offer greater control over the amount of nutrients you feed your plants than their organic counterparts. Manufactured fertilizer is also much less likely to add weeds to your garden, benefits plants more quickly than organic fertilizer and requires smaller applications.

What are the objectives of organic fertilizers?

➢ Aims of organic farming:- 1) Maintain soil health 2) Maintain Ecological balance 3) Avoid Ground water and air pollution 4) Maintain soil and crop productivity Organic farming as a system of crop production is to feed the soil rather than feed the plant.

What are the objectives of organic farming?

To produce food of high nutritional quality in sufficient quantity. To work with natural system rather than seeking to dominate them. To encourage and enhance biological cycles within farming system-involving microorganisms, soil flora and fauna, plants and animals. To maintain and increase long term fertility of soil.

What are the harmful effects of using excessive fertilizers?

What Are the Harmful Effects of Using Excessive Fertilizer?

• result in stunted growth and withering or death to the plants commonly known as leaf scorch;
• decrease the organic matter in the soil leading to soil acidification;

What is the effect of pesticides on humans?

Pesticides can cause short-term adverse health effects, called acute effects, as well as chronic adverse effects that can occur months or years after exposure. Examples of acute health effects include stinging eyes, rashes, blisters, blindness, nausea, dizziness, diarrhea and death.

What are the harmful effects of pesticides?

After countless studies, pesticides have been linked to cancer, Alzheimer’s Disease, ADHD, and even birth defects. Pesticides also have the potential to harm the nervous system, the reproductive system, and the endocrine system.

What is the advantage and disadvantage of using chemical fertilizers?

Chemical fertilizers are predictable and reliable. The Fertilizer can be used in poor soil to make it fertile immediately. They add a sufficient amount of nutrients needed by the plant. They contain the three essential nutrients (NPK) needed for plant growth.

What are the disadvantage of using chemical fertilizers?

(i)Chemical fertilizers provide minerals which dissolve in water and soon after these are available to plants. But these may not retain in the soil for long. They may escape from the soil and pollute ground water, lakes and rivers. (iii)The continuous use of chemical fertilizers has led to degradation of soil health.