What is Fertilizers - Improvement in Food Resources | Class 9 Biology Chapter 12 | 2023-24

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✅ In this video,

✔️ Class: 9th
✔️ Subject: Biology
✔️ Chapter: Improvement in Food Resources
✔️ Topic Name: Fertilizers
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00:00 Introduction Improvement In Food Resources
00:28 Fertilizers
12:35 Website Overview
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Points covered in this video:-
Fertilizers are commercially produced plant nutrients.
Fertilizers supply nitrogen, phosphorus and potassium.
They are used to ensure good vegetative growth (leaves, branches and flowers), giving rise to healthy plants.
Fertilizers are a factor in the higher yields of high-cost farming.
Fertilizers should be applied carefully in terms of proper dose, time, and observing pre and post-application precautions for their complete utilisation.
For example, sometimes fertilizers get washed away due to excessive irrigation and are not fully absorbed by the plants.
This excess fertilizer then leads to water pollution
Continuous use of fertilizers in an area can destroy soil fertility because the organic matter in the soil is not replenished.
Micro-organisms in the soil are harmed by the fertilizers used.
Organic farming is a farming system with minimal or no use of chemicals as fertilizers, herbicides, pesticides etc.
With a maximum input of organic manures, recycled farm-wastes (straw and livestock excreta).
Use of bio-agents such as culture of blue green algae in preparation of biofertilizers, neem leaves or turmeric specifically in grain storage as bio-pesticides. .

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