UPMSP Vocational Plant Nursery Practice Questions - Uttar Pradesh UPMSP Intermediate (Class 12) Vocational Plant Nursery - Code 220 Exam

How does soil solarization effectively control soil-borne pathogens and weed seeds in nursery seedbeds?

By covering moist soil with clear polyethylene sheets during peak summer to trap solar heat above 50°C By flooding seedbeds with cold water continuously for four consecutive months By covering dry soil with thick black rubber sheets during winter months By spraying high doses of synthetic systemic herbicides directly onto open beds

Correct Answer:

By covering moist soil with clear polyethylene sheets during peak summer to trap solar heat above 50°C

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