Physico-chemical
properties and Manganese concentration effects on biochemical activities in cereals
crops grown in degraded soil
Verma Rahul, Singh Swati and Singh Amit Kumar
International Journal of Agricultural Sciences and
Veterinary Medicine;
Vol. 12(3); 11-14;
doi: https://doi.org/10.25303/1203ijasvm011014; (2024)
Abstract
Degraded soil has now become an important factor in agricultural economy. Human
activities are responsible for land degradation, as construction of large-scale
canals for irrigation purposes, deforestation and faulty land use, salinization,
drought and water-logging. These processes also reduce the availability of essential
minerals. Manganese is an essential micronutrient for plant growth, development
and intervening in several type of metabolic activity, mainly in photosynthesis
and chlorophyll concentration in different types of plants. Manganese is also essential
co-factor for the oxygen-evolving complex of the photosynthetic machinery of plants
life cycle and catalyzing the water-splitting reaction in photosynthetic- II process.
Nevertheless, excess amount of Manganese is available in soil for plant affecting
the plant’s growth and become toxic for them. Manganese phytotoxicity is manifested
in the reduction of plant biomass, photosynthetic rate and different type of bio-chemical
disorders like; oxidative stress, chlorosis on young leaves, necrotic dark spot
on mature leaves and crinkled leaves. An important role of antioxidative system
in plant in high amount of Manganese has been also reported as a defense mechanism
for plants. In the collected sample of degraded soil, the availability of different
types of elements is very poor in concentration and other physico-chemical properties
are also reduced in degraded soil.
