Q1: Potassic fertilisers

ANS:C - help in development of starches of potatoes and grain.

Potassic fertilizers help in the development of starches in potatoes and grains. Potassium (K), an essential nutrient for plant growth, is often referred to as potash when applied in fertilizer form. Potassic fertilizers primarily contain potassium compounds, such as potassium chloride (KCl), potassium sulfate (K2SO4), and potassium nitrate (KNO3). While potassium is essential for various stages of plant growth and development, including early growth, its role in promoting starch formation in potatoes and grains is particularly significant. Potassium is involved in many biochemical processes within the plant, including photosynthesis, enzyme activation, and carbohydrate metabolism. It plays a crucial role in the synthesis and translocation of carbohydrates, including starches, which are essential for energy storage and structural support in plants. Therefore, potassic fertilizers are beneficial for crops like potatoes and grains as they help in the development and accumulation of starches, contributing to improved yield, quality, and storage characteristics of these crops.