Biofertilizer

Which one of the following is not correctly matched? (Nitrogen fixing agent - Crop)

Azolla gives a good biofertilizer when mixed with–

Which of the following microorganisms are used as biofertilizers?

Azolla is often used as biofertilizer because it is associated with–

Azolla is–

Aquatic Fern, which is used as a biofertilizer, is–

The aquatic plant commonly used as bio-fertilizer in the water-logged rice field is–

Which of the following is phosphatic biofertilizer?

What is the use of biochar in farming? 1. Biochar can be used as a part of the growing medium in vertical farming. 2. When biochar is a part of the growing medium, it promotes the growth of nitrogen-fixing microorganisms. 3. When biochar is a part of the growing medium, it enables the growing medium to retain water for a longer time. Which statements are correct?

Which of the following statements is incorrect in reference to compost?