Nutrient management plays an important role in getting a good yield from mustard crop. Mustard is generally a hardy plant, but it still needs balanced nutrition at different growth stages to produce more branches, more pods, and better-quality seeds. When nutrients are not supplied properly, the crop may become weak, produce fewer flowers, or show yellowing of leaves. With the right nutrient management, farmers can improve both yield and oil content in mustard.
The first step in nutrient management begins before sowing. Farmers should prepare the field well and apply well-decomposed farmyard manure or compost. Around 4–5 tonnes per acre (or 10–12 tonnes per hectare) improves soil structure, increases water-holding capacity, and adds organic nutrients. Organic matter also supports beneficial soil microbes that help the crop absorb nutrients more efficiently.
Mustard requires three major nutrients: nitrogen (N), phosphorus (P), and potassium (K). Among these, nitrogen is the most important because it helps the plant grow tall and produce more branches. Phosphorus strengthens roots and supports flowering, while potassium improves plant strength and oil formation.
A common recommended dose for mustard is around 40–60 kg nitrogen, 20–30 kg phosphorus, and 15–20 kg potassium per hectare. Farmers should adjust this slightly based on soil type. For example, sandy soils may need a little more nitrogen, while fertile loamy soils may need less.
Most of the phosphorus and potassium should be applied basally at sowing, because these nutrients move slowly in the soil and are needed for early root development. For nitrogen, splitting the dose gives better results. Half of the nitrogen should be applied at sowing and the remaining half around 25–30 days after sowing, when the plant is in the active vegetative stage. This helps the plant produce more branches and strong stems.
Micronutrients are also important for mustard. Sulphur is especially important because mustard is an oilseed crop, and sulphur increases oil content and seed quality. Farmers should apply around 20–25 kg sulphur per hectare using gypsum or sulphur-based fertilizers. Zinc deficiency is also common in many soils. If leaves appear pale or plants look weak, a zinc spray or soil application can help.
Irrigation affects nutrient uptake. If the crop does not get enough moisture during the early stage, nutrients remain unused in the soil. The first irrigation at 25–30 days after sowing (CRI stage) helps plants absorb nitrogen and phosphorus efficiently. However, over-irrigation should be avoided because it can wash away nutrients and also increase disease risk.
Weed control is another part of nutrient management. Weeds compete for the same nutrients as mustard. If the field is not weed-free in the first 30–40 days, mustard plants become weak. A clean field ensures nutrients go to the crop and not to weeds.
Foliar sprays can help when plants show deficiency symptoms. Sprays of nitrogen or micronutrients at flowering improve seed setting and pod development.
By following balanced nutrition—organic manure, proper NPK dose, sulphur application, timely irrigation, and weed control—farmers can achieve strong mustard growth and higher yields. Good nutrient management ensures better crop health, higher oil content, and improved profitability in mustard farming.
