1、Excessive N applications reduces yield and biological N fixation of
Peanut is an important cash crop and oilseed crop worldwide and plays a crucial role in promoting agricultural green development due to its biological nitrogen (N) fixation (BNF) helping to reduce fertilizer N inputs (Agegnehu et al., 2015, Hu et al., 2021, Zhang et al., 2022b).
2、Reduction in Nitrogen Rate and Improvement of Nitrogen Use Efficiency
It is important to quantify nutrient requirements and optimize fertilization to improve peanut yield and fertilizer use efficiency. In this study, a multi-site field trial was conducted from 2020 to 2021 in the North China Plain to estimate nitrogen ...
3、Reduction in Nitrogen Rate and Improvement of Nitrogen Use
It is important to quantify nutrient requirements and optimize fertilization to improve peanut yield and fertilizer use efficiency.
4、Nitrogen Acquisition and Allocation Traits in Peanuts with Different
Biological nitrogen (N) fixation was the main N source for peanuts at the podding stage, and peanut varieties with different nodulation efficiency have different responses to N fertilizer.
Nutrient uptake behavior of peanut under optimum fertilization
In this study, a multi-site field trial was conducted from 2020 to 2021 in the North China Plain to estimate nitrogen (N), phosphorus (P), and potassium (K) uptake and requirements of peanuts,...
Optimization of deficit irrigation and nitrogen fertilizer management
TOPSIS analysis showed that DI 20 N 30 was optimal in balancing of WP, yield, net return, and quality of peanut in northwestern arid India. The results have direct implications for improving...
Maize–peanut intercropping and N fertilization changed the potential
Random forest analysis indicated that the AOB/AOA ratio was an important predictor of the PNR. N fertilization and intercropping regulated the AOB/AOA ratio mainly through controlling the ammonia content and the soil C/N, respectively.
Reduction in Nitrogen Rate and Improvement of Nitrogen Use
It is important to quantify nutrient requirements and optimize fertilization to improve peanut yield and fertilizer use efficiency.
(PDF) Reduction in Nitrogen Rate and Improvement of Nitrogen Use
Results show that compared with farmer practice fertilization (FP), optimal fertilization (OPT) based on the RMOR increased peanut dry matter by 6.6% and pod yield by 10.9%.
Reduction in Nitrogen Rate and Improvement of Nitrogen Use
It is important to quantify nutrient requirements and optimize fertilization to improve peanut yield and fertilizer use efficiency.
Peanut meal is a commonly used organic fertilizer rich in nutrients such as nitrogen (N), phosphorus (P), and potassium (K). In agricultural production, proper application of peanut meal can effectively enhance soil fertility and crop yields. there is no definitive answer to the question of what nitrogen content in peanut meal is optimal. This is primarily because different crops have varying nitrogen requirements, and the nitrogen content in peanut meal is influenced by multiple factors, including variety, growth stage, and climatic conditions. the appropriate nitrogen content must be determined based on specific circumstances.
I. Main Components of Peanut Meal
Peanut meal is the residue left after removing the shell from peanuts. It consists mainly of proteins, fats, carbohydrates, minerals, and vitamins. Among these, proteins are the primary nutritional component and play a critical role in plant growth and development.
II. Nutritional Value of Peanut Meal
- High in Protein: Peanut meal contains a significant amount of protein, making it an important source of animal feed. Proteins are essential for forming plant cell walls and supporting growth.
- Rich in Fats: The fat content in peanut meal is predominantly unsaturated fatty acids, which are beneficial for human health.
- Carbohydrate Content: Peanut meal provides energy through starches and sugars.
- Minerals: It contains calcium, iron, zinc, and other minerals crucial for plant development.
- Vitamins: Peanut meal includes vitamins like B and E, which are valuable for human nutrition.
III. Application Methods for Peanut Meal
As an organic fertilizer, peanut meal can be used as base fertilizer, topdressing, or foliar spray. Key considerations include:
- Proper Dosage: Adjust usage based on crop needs and soil conditions. A typical dosage is 10–20 kg per mu (~0.067 hectares).
- Mixed Application: Combining peanut meal with other organic fertilizers (e.g., composted manure, straw) improves nutrient uptake efficiency.
- Deep Incorporation: Thoroughly mix peanut meal into the soil to enhance root absorption.
- Avoid Overuse: Excessive use may lead to salt accumulation in the soil. Follow the principle of "small amounts, multiple applications".
IV. Optimal Nitrogen Proportion in Peanut Meal
The nitrogen content in peanut meal varies. On average, 100 kg of peanut meal contains approximately 3–5 kg of nitrogen. This proportion should be adjusted according to crop requirements and soil conditions.
V. Best Timing for Nitrogen Application
Most nitrogen in peanut meal is concentrated in its protein fraction. Apply peanut meal during peak crop growth stages (e.g., after peanut harvest) to maximize effectiveness. For immediate uptake, foliar spraying can deliver nitrogen directly to plants during active growth phases.
VI. Optimal Nitrogen Application Rates
While peanut meal contains nitrogen, not all forms are suitable for fertilization. Recommended rates are 20–50 kg per mu, depending on crop needs and soil health. Excessive use risks soil salinization, so adhere to "small amounts, multiple applications".
The optimal nitrogen content in peanut meal varies depending on crops, soil, and climate. When using peanut meal as fertilizer, assess specific conditions to ensure adequate nutrient supply. Additionally, combine it with other organic fertilizers to improve efficiency.
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