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Information regarding total fertilizer application in rapeseed-raya and gobhi sarson

Title: Understanding Fertilizer Application for Rapeseed-Mustard Cultivation


Rapeseed-mustard, commonly known as sarson or gobhi sarson, refers to a group of oilseed crops that play a vital role in India’s agricultural sector. It includes two main varieties: rapeseed (Brassica napus) and Indian mustard (Brassica juncea), also known as raya. These crops are rich in oil content and have immense value in the production of edible oil, animal feed, and biofuel. To maximize their yield potential, proper fertilizer application is crucial. In this article, we will delve into the information regarding the total fertilizer application for rapeseed- raya and gobhi sarson.

Fertilizer Requirements:

1. Macronutrients:
– Nitrogen (N): Nitrogen is an essential nutrient for the growth and development of rapeseed-mustard crops. The recommended dosage ranges from 80-120 kg N/ha, depending on the variety and soil fertility. Nitrogen application should be split into three stages, i.e., 50% at the time of sowing, 25% at the time of branching, and the remaining 25% during flowering.
– Phosphorus (P): Phosphorus is vital for root development, flowering, and seed formation. A dose of 40-60 kg P/ha is generally recommended for these crops. The entire P dose should be applied at the time of sowing.
– Potassium (K): Potassium helps in improving crop resistance to diseases and enhances yield quality. A dose of 40-60 kg K/ha is typically recommended for rapeseed-mustard cultivation. It should be applied as a basal dose during sowing.

2. Secondary Nutrients and Micronutrients:
– Sulphur (S): Sulphur is a critical secondary nutrient for rapeseed-mustard cultivation, impacting oil content and quality. A dose of 20-30 kg S/ha is generally suggested, and it is often advised to use sulphate-based fertilizers.
– Zinc (Zn): Zinc deficiency is commonly observed in these crops. A basal dose of 20-25 kg Zn/ha should be applied through zinc sulphate monohydrate or zinc oxide. Foliar spray of zinc can also be done if required.
– Boron (B), Manganese (Mn), and other micronutrients: These micronutrients are essential for various physiological processes in the crop, including flower and seed development. Foliar application or through soil incorporation of required micronutrients is recommended, based on soil test results.

Fertilizer Application Methods:

– The fertilizers can be applied through broadcasting or band placement methods, depending on availability and feasibility. It is advisable to mix the fertilizers well with the soil before sowing.
– Timely application is crucial, and it is ideal to apply fertilizers a few days before sowing or at sowing time to ensure nutrients are available during critical growth stages.
– Optimal irrigation practices should be followed to prevent nutrient losses through leaching.


Rapeseed-mustard crops like raya and gobhi sarson are economically significant for India’s agriculture sector. To maximize their productivity, timely and accurate fertilizer application is crucial. A proper balance of macronutrients, secondary nutrients, and micronutrients, along with appropriate application methods, will help achieve desired yields and maintain soil fertility. It is always recommended to conduct soil testing and seek guidance from local agriculture experts for specific fertilizer recommendations based on regional and soil conditions.

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