Manganese is an essential micronutrient required for plant growth and development. It plays a vital role in photosynthesis, nitrogen metabolism, and enzyme activation. Wheat crops often suffer from manganese deficiency, which can lead to stunted growth, reduced yields, and poor-quality grain. Manganese sulfate spray can effectively treat this deficiency, but it is essential to apply it at the correct dose and time.
Suitable time for manganese sulfate spray:
The prime time for manganese sulfate spray is during the vegetative growth stage of the wheat crop, which occurs between the emergence of the first leaf and the beginning of the jointing phase. During this stage, the plant’s demand for manganese is higher as it works to establish a robust root system and develop new leaves. Applying manganese sulfate spray during this time would help improve the plant’s overall health and increase its resistance to stress factors.
In contrast, applying manganese sulfate during the grain filling stage would not offer significant benefits to the crop. The plant’s demand for manganese during this stage is minimal, and the application could result in a metallic taste being transferred to the grain.
Suitable dose for manganese sulfate spray:
The optimal dose of manganese sulfate spray depends on several factors, including the severity of the deficiency, soil pH level, and the crop’s growth stage. In general, the recommended dosage ranges between 500g and 1kg per hectare.
It is essential to note that excessive manganese sulfate application could lead to toxicity, resulting in various adverse effects on the crop. Symptoms of manganese toxicity include chlorosis between the veins of leaves, red spots on leaf blades, slow growth, and reduced yield. Hence, it is crucial to apply the right amount of manganese sulfate at the right time to avoid manganese toxicity.
In conclusion, manganese sulfate spray is a crucial solution to treating manganese deficiency in wheat crops. However, it is essential to apply it at the correct time and dose to ensure optimal benefits. Agricultural experts recommend applying manganese sulfate during the vegetative growth stage between 500g to 1kg per hectare. Doing so ensures the optimal uptake of manganese by the crop, leading to improved overall health and increased yield.