Farmers who cultivate pulse crops like green gram, Bengal gram, black gram, etc. do not apply nitrogenous fertilizers during cultivation because these crops have “rhizobium bacteria”.
Why do farmers growing leguminous plants pea gram do not add nitrogenous fertilizers?
Answer: Leguminous plants contain Rhizobium bacteria in their root nodules. These bacteria have the ability to convert atmospheric nitrogen into a plant-usable form of nitrogen. Hence, farmers need not add nitrogenous fertilisers in the fields where leguminous plants grow.
Why is it not necessary to add fertilizer for the cultivation of pulses?
Legume crops contain the nitrogen fixing bacteria (Rhizobium spp.) in their root nodules. These bacteria fix atmospheric nitrogen into nitrates for the plant use. Hence, supply of nitrogenous fertilizers to the leguminous crops is not necessary.
Why farmers do not add fertilizers during cultivation of leguminous crops?
Answer: Farmers do not add fertilisers during cultivation of leguminous crop because roots of leguminous plants have symbiotic association with a bacterium called Rhizobium which fixes atmospheric nitrogen into the soil.
Why is nitrogen fertilizer not added in soil in which plants are grown?
Nitrogen is present in abundant quantities in air; however, plants are unable to take in nitrogen in the gaseous state. Hence, soil has certain nitrogen-fixing bacteria which convert gaseous nitrogen into a more usable form and release it in the soil.
Why do farmers grow a leguminous crop in between two main crops explain Class 7?
The farmers use leguminous crops to provide nitrogen to soil because leguminous crops have nitrogen fixation bacteria in their root nodules that is fixed atmospheric nitrogen into the soil like as Rhizobium bacteria who found in leguminous( pea, pulse, soybean ) the root nodules and it fixed atmospheric nitrogen into
Why do farmers add manure and fertilizers to the soil class 7?
The manure is the organic material that is introduced into the soil to make it fertile. The manure is decomposed in the soil by the microorganisms which provides the nutrients to the soil. Thus it is necessary to replenish the soil with these nutrients.
Why farmers do not apply nitrogenous fertilizers during cultivation of pulses plant why Class 7?
Roots of pulses (leguminous plants) have a symbiotic association with a bacterium called Rhizobium which fixes atmospheric nitrogen into the soil. Adding more nitrogenous fertilizers make the level of nitrogen excess in the soil. Hence, farmers need not use nitrogenous fertilizers.
What do you mean by pulse fertilizer?
Pulses are a low carbon footprint food
Pulses utilize soil bacteria to draw nitrogen from the air. This natural process replaces the need to add nitrogen fertilizers in pulse crops, which means pulses use half the energy inputs of other crops.
Why do farmers add nitrogenous fertilizers to the soil?
When plants lack nitrogen, they become yellowed, with stunted growth, and produce smaller fruits and flowers. Farmers may add fertilizers containing nitrogen to their crops, to increase crop growth.
Why do farmers grow legume crops in field after growing the wheat crop?
The leguminous plants have nodes in their roots where the nitrogen-fixing microbes reside. These microbes help by fixing the nitrogen in the soil. Hence increasing the nitrogen level of soils. So the farmers plant the leguminous plants to maintain the nitrogen level of the soil.
Why legumes are generally not supplemented with nitrogenous fertilizers?
Legumes, with the proper soil bacteria, convert nitrogen gas from the air to a plant available form. Therefore, they do not need nitrogen fertilization, and can even add nitrogen to the soil. “Much of the nitrogen benefit of legumes comes from the plant residue – shoots and roots.
Which one of the following crop doesn’t required more nitrogen fertilizers?
Soyabean
Thus, the correct answer is ‘Soyabean.
What causes lack of nitrogen in soil?
N lack relates to the soil type and is typical for sandy and well-drained soils with fast nutrient leaching. Excessive irrigation and heavy rains cause nitrogen deficiency due to overwatering. A lack of soil moisture tampers with the absorption of water-soluble nutrients by plant roots.
How is nitrogen lost in the soil?
Nitrogen can be lost from agricultural lands through soil erosion and runoff. Losses through these events normally don’t account for a large portion of the soil N budget, but should be considered for surface water quality issues.
What causes excess nitrogen in soil?
Nitrogen is added to soil naturally from N fixation by soil bacteria and legumes and through atmospheric deposition in rainfall. Additional N is typically supplied to the crop by fertilizers, manure, or other organic materials.
Why farmers prefer to grow leguminous crops alternatively with cereal crops in their field?
Farmers use leguminous crops to provide nitrogen to the soil because nitrogen-fixing bacteria found in roots of leguminous plants like as peas, pulses crop etc. These bacteria (like rhizobium) atmospheric nitrogen fixed in the soil.
Why do most farmers remove weeds from the crop field?
Because they are plants competing to survive in a limited space, weeds are actively removing nutrients from the soil to grow taller, stronger and healthier each day.
Why do farmers grow leguminous crop in between two main crops example?
Answer: leguminous plants have rhizobium bacteria in their root nodules. they convert atmospheric nitrogen into soluble nitrogen compounds which can be used by plants. so farmers grow leguminous plants between two main crops to enrich the soil with nitrogen and to reduce the use of chemical fertilizers.
Why do farmers use fertilizers Class 5?
Without fertilizers, nature struggles to replenish the nutrients in the soil. When crops are harvested, important nutrients are removed from the soil, because they follow the crop and end up at the dinner table. If the soil is not replenished with nutrients through fertilizing, crop yields will deteriorate over time.
Why should we use less fertilizers Class 8?
1)The excessive use of fertilisers changes the chemical nature of soil and makes the soil less fertile. 2)The excessive use of fertilisers causes water pollution in ponds,lakes and rivers.
Lorraine Wade is all about natural food. She loves to cook and bake, and she’s always experimenting with new recipes. Her friends and family are the lucky beneficiaries of her culinary skills! Lorraine also enjoys hiking and exploring nature. She’s a friendly person who loves to chat with others, and she’s always looking for ways to help out in her community.