Abiotic and biotic factors play a significant role in storage losses.
Abiotic factors such as moisture and temperature of the storage area and moisture content of the stored grain Biotic factors like insects, rodents, fungi, mites and bacteria. Both the factors cause degradation in quality, loss in weight and poor germinability of grains.
Manure and fertilisers are used in the field to enrich the soil with the required nutrients. Manure helps in enriching the soil with organic matter and nutrients whereas fertilisers add chemical substances that are rich in nitrogen, phosphorus and potassium. Adding fertilisers and manures improve the fertility and the structure of the soil and ensures a healthy growth and development in plants. It is advised to use a balanced combination of manure and fertilisers in the soil to get a good yield.
For increasing production common activities in poultry, fisheries and bee keeping that should be followed are;
Cattle farming is one of the methods of animal husbandry that is most beneficial to the farmers. Benefits of cattle farming are;
Good animal husbandry practices benefit farmers in the following ways:
Crop rotation is one of the methods of crop production that ensures high yield. In this method, two or more varieties of crops are grown on the same land in sequential seasons. Every crop has some specific requirement of nutrients from the soil. If the same crop is grown in the subsequent seasons in a particular field, the field will be deficient in those nutrients that are specifically required by the growing crop. To avoid this, crops having different nutrient requirements are grown in subsequent seasons. For example, legumes which have nitrogen fixing bacteria in their root nodules supply the soil with nitrogen. Therefore, these legumes are rotated with nitrogen requiring cereals such as wheat and maize. This method reduces the need of fertilisers, thereby increasing the overall yield of crops.
Capture fishing |
Mariculture |
Aquaculture |
In this process, fish are obtained from natural water bodies like, rivers, lakes, ponds etc. |
In this process, fish are marine fish are cultured in open seas. |
This culture involves the production of aquatic animals of high economic value like prawns, lobsters, fishes, crabs etc. |
In this process, fish are first located and then caught by using fishing net. |
In this process, echo-sounders and satellites are used to locate fish. After that fish are caught by using various fishing tools. |
In this process, animals are first located and then caught by using fishing net. |
Genetic manipulation is a process where a foreign gene from one cell (for a particular character) is introduced into the chromosome of another cell. When the gene for a particular character is introduced in a plant cell, a transgenic plant is produced. These transgenic plants exhibit characters directed by the newly introduced genes.
For example, let us assume there is a wild plant that produces small flowers. If the gene responsible for larger flower size is introduced in this wild plant, this plant would become transgenic, and would produce larger flowers. Similarly genes for higher yield, disease resistance, etc can be introduced in any desired plant. Gene manipulations play following important roles in agricultural practices.
Intercropping and crop rotation both play an important role in increasing the yield of crops.
Advantages of intercropping:
Advantages of crop rotation:
You can refer to NCERT solutions for class 9 anytime during your academic year. Whether you are preparing for class tests or unit tests or pre-board exams, you can refer to the class 9 NCERT solutions easily. The NCERT solutions are available on Extramarks - The Learning App and Extramarks website in the footer section.
If you want to gain good marks in Class 9 examination then we suggest that you go through NCERT books solutions for class 9 listed on the Extramarks website. The solutions are self-explanatory and written in easy to understand language so you can easily learn and ace your exams with the help of these solutions.
NCERT solutions class 9 are self-explanatory and form the basis of examination. Since the exam syllabus is taken directly out of the NCERT books, studying NCERT solutions becomes important to prepare for the exams.
If you want to score good marks in Class 9, follow these tips:
1. Study NCERT Solutions from Extramarks website.
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NCERT solutions for Class 9 science are amazingly useful for JEE and NEET and if you are preparing for any other competitive exam then consider studying through the NCERT solutions listed on the Extramarks website. You can also study the 9-10 and other classes syllabus on Extramarks - The Learning App.
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