Question:
The soil with more than 20 Kg/ ha. phosphorous are rated as
The soil with more than 20 Kg/ ha. phosphorous are rated as
Show Hint
The standard soil test rating thresholds for phosphorus are:
Low: $< 10\text{ kg/ha}$
Medium: $10 - 25\text{ kg/ha}$
High: $> 25\text{ kg/ha}$ (or $> 20\text{ kg/ha}$ in basic testing guidelines).
Low: $< 10\text{ kg/ha}$
Medium: $10 - 25\text{ kg/ha}$
High: $> 25\text{ kg/ha}$ (or $> 20\text{ kg/ha}$ in basic testing guidelines).
Updated On: Aug 7, 2026
- Low in P
- Medium in P
- High in P
- Very low in P
Show Solution
Verified By Collegedunia
The Correct Option is C
Solution and Explanation
Step 1: Understanding the Concept:
Soil fertility ratings categorize the concentration of available nutrients to help formulate proper fertilizer application strategies.
Phosphorus ($P$) is a vital macronutrient whose availability in soil is tested using chemical extraction methods like Olsen's method (for neutral to alkaline soils) or Bray's method (for acidic soils).
The quantity of extracted phosphorus determines the nutrient rating of the soil, ranging from very low to high.
Step 2: Detailed Explanation:
The standard ratings for available phosphorus in Indian agricultural soils are generally categorized as follows:
1. Low available P: Less than $10\text{ kg/ha}$. Soils in this category require substantial phosphorus fertilization to meet basic crop needs.
2. Medium available P: Between $10\text{ and }25\text{ kg/ha}$ (often precisely listed as $10 - 6\text{ kg/ha}$). In these soils, moderate fertilizer application is sufficient to maintain crop productivity.
3. High available P: More than $25\text{ kg/ha}$ (or more than $20\text{ kg/ha}$ in simplified soil health rating systems). For these soils, only starter or maintenance doses of phosphorus are necessary.
Thus, soils with available phosphorus levels exceeding $20\text{ kg/ha}$ are classified under the "High in P" category.
Step 3: Final Answer:
The soil containing more than $20\text{ kg/ha}$ of phosphorus is rated as High in P, which corresponds to Option (C).
Soil fertility ratings categorize the concentration of available nutrients to help formulate proper fertilizer application strategies.
Phosphorus ($P$) is a vital macronutrient whose availability in soil is tested using chemical extraction methods like Olsen's method (for neutral to alkaline soils) or Bray's method (for acidic soils).
The quantity of extracted phosphorus determines the nutrient rating of the soil, ranging from very low to high.
Step 2: Detailed Explanation:
The standard ratings for available phosphorus in Indian agricultural soils are generally categorized as follows:
1. Low available P: Less than $10\text{ kg/ha}$. Soils in this category require substantial phosphorus fertilization to meet basic crop needs.
2. Medium available P: Between $10\text{ and }25\text{ kg/ha}$ (often precisely listed as $10 - 6\text{ kg/ha}$). In these soils, moderate fertilizer application is sufficient to maintain crop productivity.
3. High available P: More than $25\text{ kg/ha}$ (or more than $20\text{ kg/ha}$ in simplified soil health rating systems). For these soils, only starter or maintenance doses of phosphorus are necessary.
Thus, soils with available phosphorus levels exceeding $20\text{ kg/ha}$ are classified under the "High in P" category.
Step 3: Final Answer:
The soil containing more than $20\text{ kg/ha}$ of phosphorus is rated as High in P, which corresponds to Option (C).
Was this answer helpful?
0
0
Top ICAR AIEEA Horticulture Questions
- In banana:
Statement (A): Bunch feeding is a simple and low-cost method.
Statement (B): It is the direct way to supply nutrients to the bunch.
Statement (C): Only micronutrients can be given through this method.
Choose the correct answer from the options given below. - The softwood grafting
Statement (I): Is done with mature, procured scion on the emerging soft, coppery-red shoot of the rootstock, which is 60-70 days old.
Statement (II): Is used for raising desired varieties of mango, sapota, tamarind and cashew.
In light of the above statements, choose the most appropriate answer from the options given below. - Given below are two statements:
Statement (I): In garlic modified roots are economic part.
Statement (II): Characteristic odour in garlic is due to volatile organic sulfur-containing compounds that are rapidly produced upon tissue damage and diffuse into the air.
In light of the above statements, choose the most appropriate answer from the options given below. - Given below are two statements:
Statement (I): The flowers of ridge gourd start opening in the evening and remain open throughout the night.
Statement (II): Pollination of ridge gourd is done in the day time.
In light of the above statements, choose the most appropriate answer from the options given below. - Given below are two statements:
Statement (I): The first gynoecious based hybrid of bitter gourd is Pusa Hybrid-4 developed by ICAR-IARI, New Delhi.
Statement (II): The male:female ratio of the gynoecious based hybrids of bitter gourd is 25:1.
In light of the above statements, choose the most appropriate answer from the options given below.
View More Questions
Top ICAR AIEEA General Knowledge Questions
- New National Education Policy (NEP) was launched on
- The UN has designated 2024 as the International Year of
- Institution Village Linkage Programme (IVLP) was launched during
- A kitchen garden is having 20 varieties of vegetables and out of these 4 are leafy vegetables. Calculate the probability of getting a leafy vegetable
- Geographical indication tag (GI tag) in India was enacted during the year?
View More Questions
Top ICAR AIEEA Questions
- Which of the following statements is false?
- Which of the following is an example of an inventory?
- According to Adam Smith, productivity gains could be brought about through .
- The supply curve for an artificially scarce good is .
- Which of the following would not be considered an opportunity cost of paid employment?
View More Questions