निम्नलिखित पर विचार कीजिए :
- 1.भूमि-संरक्षण-सस्य (कवर क्रॉप्स)
- 2.उर्वरक-सिंचाई (फर्टिगेशन)
- 3.जल संवर्धन
- 4.मिश्रित कृषि
- 5.बहु-सस्यन (पॉलीकल्चर)
- 6.ऊर्ध्वाधर कृषि (वर्टिकल फार्मिंग)
परिच्छेद के अनुसार, उपर्युक्त में से कौन-सी कृषि पद्धतियाँ कृषि पारिस्थितिकी के अनुकूल हो सकती हैं ?
Read this question in English
Consider the following:
1. Cover crops
2. Fertigation
3. Hydroponics
4. Mixed farming
5. Polyculture
6. Vertical farming
Which of the above farming practices can be compatible with agroecology, as implied by the passage?
(a) 1, 4 and 5 only · (b) 2, 3, 4 and 5 only · (c) 1, 2, 3 and 6 only · (d) 4 and 6 only
उत्तर और व्याख्या · explanation in English
Answer: (a) केवल 1, 4 और 5
Agroecology, as described, copies natural ecosystems: high biodiversity, nutrients returned to the soil, natural pest control and trees, crops and livestock integrated. Cover crops, mixed farming and polyculture fit these principles; fertigation, hydroponics and vertical farming depend on external inputs or soil-free, controlled systems.
- ✓ 1. Cover crops protect the soil and return nutrients to it — 'closing nutrient loops' and building soil fertility.
- ✗ 2. Fertigation feeds soluble fertiliser through irrigation water — an external input rather than recycling nutrients back to the soil.
- ✗ 3. Hydroponics grows plants without soil in nutrient solutions, so there is no soil nutrient loop or natural ecosystem to mimic.
- ✓ 4. Mixed farming combines crops with livestock, matching 'integrating trees with livestock and crops', and its manure returns nutrients to the soil.
- ✓ 5. Growing many crops together, like intercropping, mimics natural biodiversity and uses natural pest control.
- ✗ 6. Vertical farming is a controlled, often soil-less indoor system — far from mimicking the biodiversity and functioning of natural ecosystems.
Remember · Match each practice against the passage's defining principles (biodiversity, soil nutrient loops, integration); reject high-input or soil-free systems.
Question and answer: UPSC's official GS Paper II (2021, Series A) — paper ↗ · answer key ↗. Explanation: Minimalist IAS, checked 30 Sept 2026 (how we verify). ·