How is permaculture farming different from conventional chemical farming?
1. Permaculture farming discourages monocultural practices but in conventional chemical farming, monoculture practices are predominant.
2. Conventional chemical farming can cause an increase in soil salinity but the occurrence of such phenomenon is not observed in permaculture farming.
3. Conventional chemical farming is easily possible in semi-arid regions but permaculture farming is not so easily possible in such regions.
4. Practice of mulching is very important in permaculture farming but not necessarily so in conventional chemical farming.
Select the correct answer using the code given below:

The correct answer is 1, 2 and 4.

Let us analyze each statement step-by-step to understand why permaculture farming differs from conventional chemical farming:

Statement 1: Permaculture farming discourages monocultural practices, but in conventional chemical farming, monoculture practices are predominant.
This statement is correct. Permaculture emphasizes diversity, polyculture, and mimicking natural ecosystems where multiple species grow together to create a self-sustaining system. In contrast, conventional chemical farming heavily relies on monoculture (growing a single crop over a large area), which depletes specific soil nutrients and increases vulnerability to pests and diseases.

Statement 2: Conventional chemical farming can cause an increase in soil salinity, but the occurrence of such a phenomenon is not observed in permaculture farming.
This statement is correct. Conventional chemical farming involves synthetic fertilizers, intensive tillage, and heavy irrigation, leading to soil degradation, high evaporation rates, and salinization (accumulation of salts in the topsoil). Permaculture focuses on organic soil enhancement, water conservation, natural swales, and minimal soil disturbance, which prevents salinization and maintains soil health.

Statement 3: Conventional chemical farming is easily possible in semi-arid regions, but permaculture farming is not so easily possible in such regions.
This statement is incorrect. Permaculture principles are actually designed to restore and thrive in dry, degraded, and semi-arid landscapes by utilizing rain harvesting, earthworks (swales), microclimates, and drought-tolerant species. Conversely, conventional chemical farming in semi-arid regions often fails long-term without massive irrigation and chemical inputs, leading to desertification.

Statement 4: Practice of mulching is very important in permaculture farming, but not necessarily so in conventional chemical farming.
This statement is correct. Mulching (covering the soil with organic matter like leaves, straw, or wood chips) is a foundational practice in permaculture to retain moisture, suppress weeds, prevent erosion, and enrich soil organic matter. In conventional chemical farming, synthetic herbicides, chemical fertilizers, and bare-soil tillage are commonly used instead of organic mulching.

Therefore, statements 1, 2, and 4 are correct, making the option containing 1, 2 and 4 the right choice.