Q21. In the context of IPM, what does the term ‘Economic Threshold Level’ (ETL) signify?
Agriculture, Horticulture, Forestry and Animal Husbandry in Rajasthan: RAS Prelims MCQs
164 RAS Prelims MCQs on agriculture, horticulture, forestry and animal husbandry in Rajasthan deal with farming in an arid and semi-arid State. Moisture conservation, agro-climatic zones, dry farming, drought-resistant crops, early maturing varieties and the causes of desertification are asked as facts, matches and statements, and the explanations show why each practice suits the desert environment.
Practice questions based on the RPSC RAS Prelims syllabus. They follow the exam pattern but are not past-paper questions.
Showing 21–30 of 164 questions
Q22. What does Variable Rate Technology (VRT) allow a farmer to do?
Explanation
Variable Rate Technology is a cornerstone of precision farming that enables the application of agricultural inputs at different rates. Instead of a uniform application across the entire field, VRT uses sensors and maps to adjust the dosage of water or fertilizers based on the specific needs of different sections. This ensures that every part receives the optimal amount.
Q23. Which of the following is considered a crucial tool for real-time crop health monitoring in precision farming?
Explanation
Unmanned Aerial Vehicles, commonly known as drones, have become crucial tools for real-time crop health monitoring. Equipped with specialized sensors and cameras, they can fly over fields to capture high-resolution images. This data helps in identifying areas of nutrient deficiency, water stress, or pest infestation before they become visible. Drones enable timely and targeted interventions in precision farming.
Q24. Consider the following statements regarding Precision Agriculture in Rajasthan:
I. It helps in managing the acute water scarcity through targeted micro-irrigation.
II. Remote sensing data is utilized to assess soil moisture indices.
III. Soil health cards act as a foundational data source for site-specific nutrient management.
IV. It requires high initial capital investment, which is a barrier for marginal farmers.
V. It advocates for the blind application of universally recommended fertilizer doses.
Which of the above statement(s) is/are correct?
I. It helps in managing the acute water scarcity through targeted micro-irrigation.
II. Remote sensing data is utilized to assess soil moisture indices.
III. Soil health cards act as a foundational data source for site-specific nutrient management.
IV. It requires high initial capital investment, which is a barrier for marginal farmers.
V. It advocates for the blind application of universally recommended fertilizer doses.
Which of the above statement(s) is/are correct?
Explanation
Precision agriculture in Rajasthan utilizes micro-irrigation, remote sensing, and soil health cards for efficient resource management. While these technologies help manage water scarcity and site-specific nutrients, high initial costs remain a barrier for small farmers. It does not advocate for blind fertilizer application; instead, it promotes targeted usage. Thus, the first four statements are correct reflections.
Q25. Identify the most appropriate definition of ‘Grid Sampling’ in the context of precision agriculture.
Explanation
Grid sampling is a technique used in precision agriculture to understand the variability of soil nutrients across a large area. The field is divided into smaller, uniform sections or "grids", and soil samples are collected from each. Analyzing these samples allows farmers to create detailed nutrient maps. This information is essential for applying fertilizers at variable rates, ensuring efficiency.
Q26. Which sensor technology is most commonly used in precision agriculture to measure crop health and vigor by analyzing reflected light?
Explanation
Normalized Difference Vegetation Index sensors are widely used to measure crop health and vigor. These sensors analyze the way plants reflect different wavelengths of light, particularly near-infrared and red light. Healthy vegetation reflects more near-infrared light and absorbs more red light. By calculating this index, farmers can identify stressed areas in the field and take corrective actions accordingly.
Q27. The implementation of precision agriculture in Rajasthan is directly beneficial for mitigating the effects of:
Explanation
Implementing precision agriculture in Rajasthan is directly beneficial for mitigating the challenges posed by high variability in soil and climate conditions. Since soil fertility and moisture levels can vary significantly even within a single field, uniform farming often leads to wastage or under-performance. Precision techniques allow for site-specific management, ensuring that every part is treated according to requirements.
Q28. Analyze the following cause and effect statements and select the correct option: Cause: Precision agriculture utilizes micro-irrigation systems coupled with soil moisture sensors. Effect: There is a significant increase in the water use efficiency of crops in arid regions.
Explanation
Precision agriculture integrates micro-irrigation systems with soil moisture sensors to ensure that water is applied only when and where it is needed. This targeted approach directly results in a significant increase in water use efficiency. In the arid regions of Rajasthan, where water is a scarce resource, such technological integration is vital for sustainable crop production and viability.
Q29. Yield monitors attached to combine harvesters provide data to create:
Explanation
Yield monitors are electronic devices attached to combine harvesters that record the amount of grain harvested in real-time. When coupled with GPS data, this information is used to create detailed yield maps. These maps show the variations in productivity across different parts of a field. Farmers can analyze these maps to understand why certain areas underperformed and plan accordingly.
Q30. In Rajasthan, the primary rationale for adopting polyhouse farming is to:
Explanation
The primary reason for adopting polyhouse farming in Rajasthan is to protect high-value crops like capsicum and exotic vegetables from harsh climatic conditions. Polyhouses shield plants from the intense desert sun, hot winds, and occasional frost. Additionally, they create a physical barrier against many insect pests. This controlled environment allows for year-round production of superior-quality produce, which fetches higher prices.Answer key for these questions
| Q | Correct answer |
|---|---|
| 21 | (b) Pest density where control must prevent populations from reaching injury levels. |
| 22 | (b) Apply inputs at varying rates across a field based on specific local conditions. |
| 23 | (a) Unmanned Aerial Vehicles (Drones) |
| 24 | (a) I, II, III, and IV |
| 25 | (d) Mapping soil variability by dividing a field and sampling each section. |
| 26 | (c) NDVI sensors to analyze reflected light |
| 27 | (b) Variability in soil and climate conditions |
| 28 | (a) The Cause is true, and the Effect is the direct result of the Cause. |
| 29 | (a) Yield maps |
| 30 | (a) Protecting high-value crops from pests and extreme weather |
Key facts from Agriculture, Horticulture, Forestry and Animal Husbandry in Rajasthan
- Contour bunding and mulching are effective moisture conservation methods in arid agriculture.
- Jaisalmer, Barmer and Bikaner fall in the Hyper Arid Partial Irrigated Zone.
- Dry farming is the practice of growing crops in regions with less than 750 mm of annual rainfall without irrigation.
- Bajra (pearl millet) is a common drought-resistant crop of the arid region; moth bean is drought-tolerant and forms a dense soil cover.
- Raj 3077 is a drought-resistant wheat variety suited to low-water areas.
- Early maturing varieties help crops escape terminal drought; overgrazing by livestock accelerates desertification.
Frequently asked questions
How many RAS Prelims practice MCQs are there on Agriculture, Horticulture, Forestry and Animal Husbandry in Rajasthan?
This page has 164 practice MCQs on Agriculture, Horticulture, Forestry and Animal Husbandry in Rajasthan (Health, Environment and Agriculture). Each has the correct answer, and most have an explanation.
What is dry farming?
The practice of growing crops in regions with less than 750 mm of annual rainfall without irrigation, by conserving soil moisture through methods such as mulching, bunding and early sowing.
Why is moth bean grown widely in Rajasthan?
Because it is drought-tolerant and forms a dense soil cover that protects the soil from erosion. It also fixes nitrogen, so it suits the poor sandy soils of the arid west.
Why are early maturing varieties important?
They complete their growth before the dry spell at the end of the season, so the crop escapes terminal drought. This is a key strategy for rain-fed farming in Rajasthan.