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For rice the best fertilizer is

For rice the best fertilizer is Correct Answer <em>Azolla pinnata</em>

The correct answer is Azolla pinnata.

  • Nitrogen fixing cyanobacteria (blue green alage) form symbiotic association with several plants,e.g. cycad roots, lichens, liverworts, Azolla.
  • Azolla pinnata is a free floating fresh water form which multiplies rapidly, doubling every 5 - 7 days.
  • Anabaena azolla resides in the leaf cavities of the fern and fixes nitrogen.
  • A part of the fixed nitrogen is excreted in the cavities and becomes available to the fern.
  • The decaying fern plants release the same for utilization of the rice plants.
  • When field is dried at the time of harvesting,the fern functions as the green manure, decomposing and enriching the field for the next crop.

Related Questions

Anil has two varieties of rice. Cost price of 1st variety of rice is Rs. 25 per kg and he purchased 5 kg. He purchased other variety of rice at certain rate and he purchased 6 kg of rice of other variety of rice. He mixes both the rice and sold at Rs. 31 per Kg. He made no profit. At what price per Kg did he purchase the second type of rice.
A shopkeeper has 12 kg of pure rice and 6 kg of impure rice. He mixes both type of rice but 3 kg of the mixture gets spoiled. If he again mixes 3 kg of impure rice to the remaining mixture and sell mixture at a price 20% above the cost price of pure rice. Then what is actual profit or loss percentage if cost of impure rice is 50% of cost of pure rice.
A dealer bought fertilizer for Rs. 40 per kg, but he filled only 48.5 kg fertilizer in a bag of 50 kg. At what price is he selling the 50 kg fertilizer bag to earn an overall profit of 15%  if he use same weight to fill the fertilizer bag in both case?
A merchant buys 48 kg of rice and sets a marked price in order to gain 25% by selling the rice. He sells 8 kg rice at the marked price and gave 10 kg to a relative at a discount of 15%. Later he found that 4 kg of rice was wasted in transition. He sells the remaining rice by increasing the marked price by a certain percentage in order to make an overall profit of 20%. By how much percent did he increased the marked price of the remaining rice?
A shopkeeper has 100 kg of good grade rice and x kg of bad grade rice. He brought good and bad grade rice for Rs. 20 and Rs. 10 respectively. He can sell the good and bad grade rice at Rs. 30 and Rs. 13.5 respectively. Out of x kg, if he mixes y kg of bad grade rice with good grade, he will get a profit of 69 2/7% from total sale. If he mixes y/2 kg of bad grade rice with good grade, he will get a profit of 57.5%. What is the profit he would have got if he sold honestly? (in rupees)
There are two varieties of rice. Rice I or Rice II. Rice I costing Rs. 60 per kg and rice II costing Rs. 75 per kg. If both the rice mixed so that there will be no loss or gain on selling the mixture at the rate of Rs. 69 per Kg. Find the ratio in which both the varieties mix.
The table given below shows the production of rice and the area under rice cultivation of a country for 5 consecutive years Y1, Y2, Y3, Y4 and Y5.   Year    Rice Production   (in 1000 kg)   Area Under Rice Cultivation   (in 100 square meter) Y1 520 130 Y2 570 190 Y3 680 150 Y4 720 180 Y5 850 170 What is the per year average production of rice?
The ratio of price of rice per kg in shops A, B and C is 10 ∶ 14 ∶ 19 and the ratio of the price of wheat per kg in shops A, B and C is 5 ∶ 8 ∶ 9 respectively. If the ratio of price of (3 kg rice + 2 kg wheat from shop A), (5 kg rice and 7 kg of wheat from shop B) and (5 kg rice from shop C and Rs. 135 worth other materials from shop B) is 2 ∶ 7 ∶ 6. What is the price of 25 kg of rice from shop A and 15 kg of wheat of shop B? (in rupees)
The total consumption of rice is 20 kg per month for a family. As the price of rice increases by 35%, the family reduces its consumption so that the expenditure of rice is increased only by 8%. What is the new consumption (in kg) of rice per month due to the increases in the price of rice?
Every month a man consumes 25 kg rice and 9 kg wheat. The price of rice is 20% of the price of wheat and thus he spends total Rs. 350 on the rice and wheat per month. If the price of wheat is increased by 20% then what is the percentage reduction of rice consumption for the same expenditure of Rs. 350? Given that the price of rice and consumption of wheat is constant :