Question

CLASS VIII SCIENCE PISA QUESTIONS 1. AUGMENTATION IN CROP AND SOIL FERTILITY All living being need water to live. Water is important for proper growth and development of flower , fruits and seeds of plants. Plants absorb water, minerals and fertilizers by root . plants contain nearly 90% water. So Irrigation is a basic need of plant or crop. The supply of water to crop at different intervals is called irrigation . Two type irrigation system are followed in India as Traditional and modern methods . in traditional system of irrigation in India includes a network of major and minor canals from Indian rivers, groundwater well Based system ,tanks and other rainwater harvesting project for agricultural activities. Most of the canal irrigation is in the canal network of Ganga-Yamuna basin. Mainly in the state of Punjab Haryana and Uttar Pradesh and somewhat in Rajasthan. Availability of Fertilizer and manure in soil is also basic need for crop production . So what is soil fertility status in India ? Being a tropical country the organic content of Indian soil is very low. The deficiency of Nitrogen (N2) is universal in India. Most of the Indian Soil are low medium in Phosphorus (P) and Potassium(K) deficiency has also become widespread . The Deficiency of Sulphur (S) is increasing besides primary nutrients and secondary nutrients . The increasing deficiency of macronutrients is becoming a cause of concern among the macronutrients . There is a need to promote the use of type of fertilizers required to correct the deficiency of all these nutrients. And to improve the natural low organic matter content of the soil, the application of sufficient quantities of organic manures is essential. After the production of crop and their production what is the storage of food grains status in India? In India the current food grain capacity is 877.37 lakh tones with FCI and state agencies as on 31 oct 2018. If the crop grain are to be kept for longer time they should be safe from moisture, insects, rats and microorganisms. In India food grains are stored using traditional structure by small farmers. And the surplus grains are stored with Government agencies like FCI (food corporation of India) , central and state warehousing corporations. The common used storage method is Cover and Plinth (CAP) storage which is economical but loss of grain is inevitable. Q1.Which of the following is not a micronutrient? (a) Nitrogen (b) Water (c) Sulphur (d) Phosphorus Q2. Write YES/NO. (a) Canal network is mainly adopted in Haryana. (YES/NO). (b) Fertilisers are generally nutrient-specific. (YES/NO) (c) Plants contain nearly 64% water. (YES/NO) Q3. The use of fertilisers in Indian crop land is necessary for better treatment of soil .Being a tropical country because the organic content of the Indian soil is very low. (A) What is the effect of fertilises on crop production ? (B) Which elements are called macronutrient for crops? Write any two macronutrients. Q4. The production of crop and their products , storage of food grains status in India: In India the current food grain capacity is 877.37 lakh tones with FCI and state agencies as on 31 Oct 2018. Which agencies are doing the storage of the surplus food grains? And give the name of modern storage structures ? (Any two) ________________________________________________________________________________________________________________________________ ​

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Answer:

14 hours ago — AUGMENTATION IN CROP AND SOIL FERTILITY All living being need water to live. Water is important for proper growth and development of flower , fruits and seeds of plants. Plants absorb water, minerals and fertilizers by root . plants contain nearly 90% water. So Irrigation is a basic need of plant or crop.

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