As one of the essential micronutrients for wheat crop growth, manganese (Mn) plays a crucial role in photosynthesis, enzyme activation, and plant defense mechanisms. Mn deficiency in wheat crop is a common problem that can severely affect plant growth, yield, and quality.
Mn deficiency symptoms in wheat crop include interveinal chlorosis (yellowing) of young leaves, brown spots and necrosis on leaf margins, and stunted growth. The deficiency can be caused by different factors, including soil pH, poor drainage, high organic matter, and nutrient imbalances. Soil pH above 7.5 can reduce Mn availability, and sandy soils with low organic matter are also at risk of Mn deficiency.
To prevent and correct Mn deficiency in wheat crop, several techniques can be employed. Firstly, soil testing should be conducted to assess the soil pH, organic matter, and nutrient levels. If the soil pH is high, it can be lowered by adding sulfur or acidifying fertilizers. Organic matter levels in sandy soils can be improved by incorporating organic matter sources, such as compost or manure.
Mn fertilization is also an effective way to prevent and correct Mn deficiency in wheat crop. Mn sulfate can be applied as a foliar spray or a soil additive, depending on nutrient availability and plant needs. Mn sulfate can be applied in a water solution, and the recommended rate is 1 kg/hectare. Foliar application can also be done during active growth stages to address the deficiency.
In conclusion, manganese deficiency in wheat crop is a serious issue that can affect yield and quality. Proper soil testing and Mn fertilization can help prevent and correct Mn deficiency. Therefore, farmers and agronomists should closely monitor Mn levels in the soil and plants to ensure adequate nutrient supply for optimum crop production.