1、The influence of maize–stover compost and nitrogen fertilizer on growth, yield and nutrient uptake of amaranth

Applications of maize–stover compost and its combination with urea fertilizer enhanced plant growth. Plant height, stem girth, number of leaves, leaf area and dry matter per plant as well as shoot yield were all significantly affected by different levels of compost both in combination with or without urea fertilizer.

2、Stage

A nitrogen (N) and phosphorus (P) fertilizer addition experiment was conducted to evaluate the dynamics of N and P homeostasis and resorption efficiency during different growth-stages of ...

3、Effects of soil types and fertilizers on growth, yield, and quality of edible

Growth and yield of all amaranth lines were higher in gray soil (pH 8.4) than in dark red soil (pH 6.6) and red soil (pH 5.4). The combined NPK fertilizer resulted in highest growth parameters and yield of amaranths in all soils. Nitrogen fertilizer alone did not affect growth parameters and yield of amaranths in dark red and red soils.

Roles of nitrogen, phosphorus, and potassium fertilizers in carbon sequestration in a Chinese agricultural ecosystem

To enhance cereal production and meet the escalating food demands of the increasingly affluent population in China, the application of nitrogen (N), phosphorus (P), and potassium (K) fertilizers to agricultural soils has risen significantly.

Yield and nitrogen utilization efficiency of the pseudocereals amaranth, quinoa, and buckwheat under differing nitrogen fertilization

This study was undertaken to explore nitrogen (N) fertility requirements and nitrogen use efficiency of these species. For this purpose, a 2-year field experiment with N rates of 0, 80, and 120 kg N ha −1 for amaranth and quinoa and 0, 30, and 60 kg N ha −1 for buckwheat and two cultivars of each species was conducted.

Yield responses of grain amaranth (Amaranthus cruentus L.) varieties to varying planting density and soil amendment

The results revealed that grain amaranth gave optimum grain yield responses when grown at a planting density of 60,000 plants ha-1 and with the application of soil amendment at 100 kg N ha-1 inorganic fertilizer, while the grain yield was significantly (p < 0.01) higher with the CEN18/97 amaranth variety than in the TE81/28 across soil ...

FVCSB

Result indicated that organic and inorganic applied solely showed significant influence on the growth and yield of amaranth. Organic fertilizer was the best in terms of plant height and stem girth, while the inorganic fertilizer and their combination have the highest value in number of leaves and leaf area respectively.

EFFECT OF LEVELS OF NITROGEN AND IRON ON YIELD OF GRAIN AMARANTH (Amaranthus hypochodriacus L.) UNDER DIFFERENT PLANTING TECHNIQUES

Among the planting techniques, line sowing recoded significantly higher plant height, length of main spikelets, number and length of lateral spikelets, grain and stover yield of amaranth. Line sowing resulted into 17.1%; 5.8% and 9.7%; 3.1% higher grain and stover yields, respectively over broadcasting and paired row methods of sowing.

Response of Amaranth (<i>Amaranthus hybridus</i>) to Different Rates and Times of Urea Fertilizer Application

The response of Amaranth (Amaranthus hybridus) to different rates and times of nitrogen (N) application was studied at Teaching and Research Farm,University of Ado-Ekiti in the late seasons of 2003 and 2004.

Reducing nitrogen and phosphorus losses from arable slope land with contour hedgerows and perennial alfalfa mulching in Three Gorges Area, China

During the last 10 years, a long-term comparison of ecological methods to reduce losses of nitrogen and phosphorus has been carried out with five treatments: perennial alfalfa soil mulching (G1), ryegrass and grain amaranth (soybean) rotation (G2), peanut rotation with wheat and intercropping with contour Toona sinensis hedgerows (G3), peanut ro...

In the process of growing amaranth, the rational application of nitrogen and phosphorus fertilizers is crucial. Nitrogen fertilizer promotes plant growth and enhances disease resistance, while phosphorus fertilizer improves soil water-retaining capacity and nutrient absorption. Below is a detailed guide on correctly using these two types of fertilizers:

I. Nutritional Requirements of Amaranth

1. Role of Nitrogen: Nitrogen is a key element for plant growth, essential for protein synthesis, particularly in leaves. It boosts photosynthesis, energy production, and stress resistance (e.g., drought and cold tolerance).

2. Role of Phosphorus: Phosphorus is a critical component of cell walls, participating in energy conversion, nucleic acid synthesis, and hormone production. It also strengthens root development and improves water absorption and retention.

3. Role of Potassium: Potassium regulates water balance, stabilizes cell structures, and supports energy metabolism. It aids sugar transport and utilization, enhancing disease resistance.

II. Types and Functions of Nitrogen Fertilizers

1. Urea: A common nitrogen-rich fertilizer that breaks down into ammonia in soil for rapid absorption. Suitable for all soil types, especially acidic soils, as it reduces pH and mitigates toxicity.

2. Ammonium Nitrate: Contains both nitrogen and ammonium ions. Absorbed slowly but improves soil organic matter, making it ideal for sandy soils.

3. Ammonium Bicarbonate: A weakly alkaline fertilizer releasing ammonia and carbon dioxide over time. Best for acidic or lightly saline soils, as it neutralizes acidity and reduces salt damage.

III. Types and Functions of Phosphorus Fertilizers

1. Superphosphate: High-phosphorus content, effective for replenishing soil phosphorus. Suitable for acidic and lime-rich soils, enhancing phosphorus uptake by plants.

2. Calcium-Magnesium Phosphate: A composite fertilizer providing calcium, magnesium, and phosphorus. Boosts soil fertility in lime-rich or acidic soils while supplying multiple nutrients.

3. Diammonium Phosphate (DAP): A high-efficiency phosphorus fertilizer with rapid absorption. Optimal for acidic and neutral soils, promoting growth and development.

IV. Timing and Methods of Fertilization

1. Timing:

   • Spring: Increase nitrogen during the vigorous growth stage.
   • Autumn: Add phosphorus and potassium during maturation and harvesting.

2. Methods:

   • Soil Type: Use trench or hole application for acidic soils; broadcast for sandy soils.
   • Avoid Overapplication: Prevent soil salinization and nutrient loss.

Rational use of nitrogen and phosphorus fertilizers significantly enhances amaranth growth. Follow scientific methods and timing to ensure efficient nutrient uptake and soil health.