Which one of the following soil nutrients is naturally replenished by the cultivation of leguminous crops?

With reference to 'Harvest Festivals', consider the following statements: 1. They mark the period of harvest and are celebrated with joy. 2. Pongal and Bihu are festivals exclusively celebrated in Western India. 3. These festivals are celebrated in various parts of the country. Which of the statements given above is/are correct?

With reference to weedicides, consider the following statements: 1. They are chemicals used to control weeds. 2. They are sprayed to kill the main crop along with the weeds. 3. They are best sprayed during the vegetative growth of weeds before flowering. Which of the statements given above is/are correct?

Consider the following statements regarding the nutrient content of Manure vs Fertiliser: 1. Manure is richer in plant nutrients like nitrogen and phosphorus compared to fertilisers. 2. Fertilisers are very rich in nitrogen, phosphorus, and potassium. 3. Manure provides humus which fertilisers do not. Which of the statements given above is/are correct?

Which one of the following is an organic soil amendment derived from the decomposition of plant or animal waste?

With reference to traditional methods of irrigation, consider the following statements: 1. They typically use cattle or human labour. 2. They are generally more efficient than modern methods. 3. Moat and Rahat are examples of traditional irrigation systems. Which of the statements given above is/are correct?