Greenhouse expansion raises concerns over soil, environmental damage — Pajhwok

KABUL (Pajhwok): While greenhouses help boost agricultural production and meet market demand, experts warn that the excessive or unbalanced use of chemical fertilisers, water shortages and improper disposal of agricultural plastics can damage soil fertility and the environment. Environmental expert Engineer Sayed Qayum Hashimi said chemical fertilisers could supply plants with essential nutrients and improve their growth and yields when applied in quantities suited to soil and crop requirements. However, their unbalanced use could adversely affect soil quality. He said excessive application of chemical fertilisers could cause salts to accumulate in the soil and alter its acidity or alkalinity. The quality of irrigation water also played a role, as water with a high salt content could further increase soil salinity. Hashimi added that both insufficient and excessive fertiliser application could limit plant growth and productivity. He said animal manure, compost and chemical fertilisers should therefore be used according to soil requirements and the type of crop being cultivated. Agricultural expert Elias Sediqi said the proper and balanced use of chemical fertilisers could replenish soil nutrients and improve both the quantity and quality of agricultural produce. However, excessive application without considering the needs of the soil and plants could, over time, increase soil acidity and salinity, reduce fertility and pollute water resources. He said the continuous use of the same type…