1、Effects of application of rapeseed cake as organic fertilizer on rice

In the present study, high yielding 'super' rice cultivars were grown in the field with three cultivation practices, including zero nitrogen application (0N), local high yielding practice with chemical fertilizer (T1) and T1 treatment with additional organic fertilizer (T2).

2、Enzymatic fermentation of rapeseed cake significantly improved the soil

Rapeseed cake is an important agricultural waste. After enzymatic fermentation, rapeseed cake not only has specific microbial diversity but also contains a lot of fatty acids, organic acids, amino acids and their derivatives, which has potential value as a high-quality organic fertilizer.

3、Which cake fertilizer has good fermentation effect?

Rapeseed cake contains about 4.6% nitrogen, about 2.4% phosphorus, and about 1.4 potassium, among which the phosphorus content is relatively high. However, the nitrogen content and overall fertilizer effect are not as good as bean cake and peanut cake.

Effects of chemical fertilizer nitrogen substitution with rapeseed cake

The present study was comprised of different proportions of nitrogen replacement fertilizers such as rapeseed cake fertilizer (N30:30%, N60:60%, N100:100%), and recommended nitrogen application as control.

扬州大学教师个人主页服务平台 胡雅杰

One-time fertilization of controlled-release urea with compound fertilizer and rapeseed cake maintains rice grain yield and improves nitrogen use efficiency under reduced nitrogen conditions

Effect of Integrated Use of Rapeseed Cake, Biochar and Chemical

The results showed that the conjunctive application of mineral fertilizers with rapeseed cake (NPK + RC) resulted in significant (p < 0.05) reductions in soil penetration resistance (14.8%) and bulk density (8.7%) and improvement in porosity (9.9%) compared to the control.

Effects of application of rapeseed cake as organic fertilizer on rice

In the present study, high yielding ‘super’ rice cultivars were grown in the field with three cultivation practices, including zero nitrogen application (0N), local high yielding practice with chemical fertilizer (T1) and T1 treatment with additional organic fertilizer (T2).

Effects of application of rapeseed cake as organic fertilizer on rice

Abstract BACKGROUND Applying organic fertilizer coupled with chemical fertilizer has been widely adopted to improve crop productivity and quality and develop sustainable agriculture.

One

The fertilizer of rapeseed cake (RC) is one of the important organic fertilizers that can increase grain yield and NUE by improving soil organic matter and the abundance of microorganisms in the soil (Zhou TY. et al., 2022).

Optimization and Impact of Rapeseed Cake Biosorption for Nutrient

By enhancing the nutrient profile of rapeseed cake through biosorption, this study aims to provide a sustainable solution to fertilizer production, improving soil nutrient levels and promoting long-term agricultural productivity.

Rapeseed cake is a common organic fertilizer primarily derived from rapeseeds through processes such as pressing, shelling, and crushing. In agricultural production, rapeseed cake, rich in nitrogen, is widely used to promote crop growth and enhance yields. Below, I will explain why rapeseed cake contains nitrogen fertilizer and its impact on plant growth.

Reasons Why Rapeseed Cake Contains Nitrogen Fertilizer

1. Abundant Raw Material Sources: Rapeseed is a widely cultivated cash crop, and its seeds are rich in nitrogen, making them ideal for producing rapeseed cake. By pressing rapeseeds, nitrogen is effectively extracted to form the cake.
2. Comprehensive Nutrients: Besides nitrogen, rapeseed cake contains essential microelements and vitamins, such as phosphorus, potassium, sulfur, and calcium, which are crucial for plant growth and development.
3. Easy Decomposition and Utilization: The nitrogen in rapeseed cake has a stable structure and is readily decomposed by soil microorganisms. Using rapeseed cake reduces reliance on other nitrogen sources, lowering production costs.
4. Environmentally Friendly: Unlike chemical fertilizers, rapeseed cake minimizes environmental impact. It avoids excessive nitrogen pollution, protecting soil and ecosystems.

Impact of Rapeseed Cake on Plant Growth

1. Promotes Root Development: Nitrogen in rapeseed cake supports root growth, which is vital for water and nutrient absorption, enhancing overall plant vigor.
2. Improves Photosynthetic Efficiency: Nitrogen aids in leaf growth and chlorophyll synthesis, boosting photosynthesis and accumulating more photosynthates.
3. Enhances Nutritional Status: By increasing soil nitrogen, rapeseed cake improves plants’ ability to absorb essential nutrients like phosphorus and potassium.
4. Strengthens Stress Resistance: Adequate nitrogen helps plants tolerate adverse conditions (e.g., drought, salinity) by improving their survival capabilities.
5. Boosts Fruit Quality: Nitrogen promotes fruit development, improving sugar content, taste, and nutritional value, thereby increasing market competitiveness.
6. Reduces Pest and Disease Risks: Components in rapeseed cake may have antibacterial or pest-repellent properties, suppressing pathogens and pests.
7. Stabilizes Yields: As an organic fertilizer, rapeseed cake offers flexible application, ensuring sustained high yields compared to chemical fertilizers.
8. Increases Soil Organic Matter: Nitrogen and nutrients in rapeseed cake are converted into organic matter by soil microbes, improving soil structure, water retention, and fertility.
9. Extends Fertilization Intervals: Nitrogen in rapeseed cake is gradually released, reducing the frequency of applications and minimizing resource waste and pollution.
10. Enhances Stress Tolerance: Nitrogen strengthens plants’ resilience to environmental stresses like drought or salinity, improving survival rates.

rapeseed cake, as a nitrogen-rich organic fertilizer, significantly benefits plant growth by promoting root development, photosynthesis, nutrient absorption, stress resistance, fruit quality, yield stability, soil health, and sustainability. Its eco-friendly nature makes it a valuable alternative to chemical fertilizers. Rational use of rapeseed cake in agriculture is essential for balancing productivity with environmental protection and sustainable development.