1、Nitrogen use efficiency in rapeseed. A review

Here, we review the major phenotypic traits associated with NUE in B. napus, with special emphasis on winter oilseed rape. We discuss the genetic diversity available and potential breeding strategies.

2、Alteration in yield and oil quality traits of winter rapeseed by lodging at different planting density and nitrogen rates

In this study, we quantified the lodging-induced yield losses, changes in fatty acid composition, and oil quality in rapeseed under different nitrogen application rates and planting densities.

3、The effect of waterlogging on yield and seed quality at the early flowering stage in

Our study reveals the effects of waterlogging on different varieties of rapeseed at the early flowering stage and provides some data that may be useful for breeding more tolerant varieties.

4、Effects of a controlled

In conclusion, CRF significantly promoted the growth of rapeseed with using total N as the base fertilizer, by providing sufficient N in the later growth stages, and last by reducing the residual N in the soil and increasing the N accumulation and N usage efficiency.

5、Frontiers

Field management followed regular planting practices, and the planting practices in the two places were identical. At the grain filling stage, three replicates of siliques from 30 or 40 days after flowering were collected for RNA extraction. All seeds were gathered, snap-frozen in liquid nitrogen, and kept at −80°C for further use.

Response of winter rape (Brassica napus L. ssp. oleifera Metzg., Sinsk) to foliar fertilization and different seeding rates

The present study has proved that foliar fertilization of winter oilseed rape in the autumn period contributes to improved plant winter hardiness and increased productivity.

The yield of mechanically harvested rapeseed (Brassica napus L.) can be increased by optimum plant density and row spacing

To determine the effects of plant density and row spacing on the mechanical harvesting of rapeseed (Brassica napus L.), field experiments were conducted.

Flowering time variation in oilseed rape

The yield potential of rapeseed to a large extent depends on flowering time, and flowering time adaptation is a major breeding goal. Three different growth types can be distinguished.

Effects of fertilization on crop production and nutrient

Based on the study results, a balanced nutrient application using NPK fertilization is a key management strategy for enhancing rice-rapeseed productivity and environmental safety.

Root

Considering the yield and mechanical harvesting properties, the results of the present study show that the optimum effect of the liquid silicon fertilizer on both rapeseed varieties occurred during the early bud stage (bolting height of 8–12 cm) with a monosilicic acid content was 0.96 mM.

Applying foliar fertilizer during the flowering stage of rapeseed is a critical measure to enhance yield and quality. Foliar fertilizers, sprayed directly onto the leaves, are absorbed quickly by plants, significantly promoting growth, stress resistance, productivity, and improving crop quality. Below are best practices for foliar fertilization during this period:

1. Select Appropriate Foliar Fertilizers

(1) Fertilizer Type

Choose fertilizers based on rapeseed’s nutritional needs, including:

• Nitrogen fertilizers: Stimulate plant growth and flowering.
• Phosphorus fertilizers: Strengthen root development and disease resistance.
• Potassium fertilizers: Improve stress resistance and fruit quality.
• Microelement fertilizers: Supplement essential minerals like boron, zinc, and iron.

(2) Concentration

Maintain optimal concentration (0.1%–0.3%) to avoid under- or over-dosing.

2. Timing of Application

(1) Optimal Period

The flowering stage is ideal for foliar spraying due to high nutrient demand. Timely application supports robust growth.

(2) Avoid Sensitive Phases

Refrain from spraying before flowering or after the main flowering period, as excessive nutrients may hinder normal growth.

3. Application Methods

(1) Equipment Preparation

Use a specialized foliar sprayer with a clean, clog-free nozzle for even distribution.

(2) Dilute Fertilizer

Mix fertilizers to recommended concentrations before spraying.

(3) Uniform Coverage

Ensure thorough leaf coverage, avoiding missed spots.

(4) Timely Spraying

Schedule applications during morning or evening hours to avoid heat stress.

4. Key Considerations

(1) Avoid Overapplication

Excessive use can lead to toxicity. Adhere strictly to dosage guidelines.

(2) Safety Measures

Wear protective gear (mask, gloves) to prevent skin/eye contact. Rinse skin if exposed.

(3) Monitor Plant Response

Observe growth and leaf color post-application. Adjust strategies if abnormalities arise.

5. Post-Application Management

(1) Timely Irrigation

Follow spraying with water to aid nutrient absorption.

(2) Comprehensive Field Care

Combine foliar fertilization with optimal planting density, scientific irrigation, and pest/disease control to maximize yield and quality.

following these steps ensures efficient use of foliar fertilizers, providing strong support for healthy rapeseed growth during the flowering stage.