I. Why Is Magnesium Essential in Aquaculture? In aquaculture practice, many production problems do not originate directly from diseases, but from more fundamental and often overlooked factors—imbalances in waterborne minerals. Issues such as failed molting in crustaceans, increased mortality after stress events, unstable water quality, and disrupted algal communities are frequently linked to deficiencies or improper ratios of basic ions such as magnesium in the culture water.

Urea and calcium ammonium nitrate (can) are both nitrogen fertilizers. How do their nitrogen supply effects differ, and how should they be chosen in practice? In today’s agricultural input market, an increasing number of distributors and growers are paying close attention to Calcium Ammonium Nitrate (CAN) . In certain application scenarios, CAN is even being used to partially replace traditional urea for topdressing. So, what are the fundamental differences between urea and

From December 26, 2025 to January 9, 2026, China’s domestic fertilizer market operated around the core theme of “price stability and supply assurance for phosphate fertilizers.” On the raw material side, clear divergence was observed: phosphate rock remained largely stable, sulfur fluctuated at high levels, while sulfuric acid and synthetic ammonia stayed broadly stable. The potash market continued to operate under a tight supply–demand balance, with prices holding firm at el

In agricultural production, potassium nitrate stands out as a key fertilizer for fruit enlargement, quality improvement, stress resistance, and yield enhancement due to its unique dual supply of nitrogen and potassium. It provides crops with readily available nitrate nitrogen, promoting photosynthate formation and nutrient transport, while also supplying potassium, which enhances cellular structural stability and improves overall resistance to lodging, environmental stress, a

Ferrous sulfate is one of the essential care materials for flower and ornamental plant enthusiasts. Especially for evergreen foliage plants grown in warm regions, proper application of ferrous sulfate can effectively address soil alkalization and iron deficiency, supporting healthy plant growth. So, under what conditions do plants need ferrous sulfate, and how should it be applied correctly? Ferrous sulfate appears as fine crystalline powder and is readily soluble in water. I

Recently, the international fertilizer market has shown clear characteristics of concentrated demand release supported by government subsidy policies. Countries including India, Indonesia, and Nepal have actively advanced fertilizer tenders and procurement programs, while Pakistan recorded record-high fertilizer sales. Against this backdrop, China’s potash market concluded 2025 at elevated but stable levels, and entered 2026 with continued firmness. Potassium chloride prices

Potassium nitrate is a widely used binary compound fertilizer in agriculture, containing approximately 13% nitrogen (N)  and 46% potassium oxide (K₂O) . It combines the functions of both nitrogen and potassium fertilizers, offering a balanced nutrient profile and excellent water solubility, allowing rapid uptake by crop roots. It is chloride-free , making it especially suitable for chloride-sensitive crops such as tobacco, potatoes, and citrus . Potassium nitrate effectively

We have previously provided a detailed introduction to boron as an element and its related products. Please refer back to the following article: https://www.kelewell.de/en/post/a-comprehensive-overview-of-boron-products-from-borax-pentahydrate-to-dot-exploring-agriculture-a In addition to the boron fertilizers we have already discussed—such as boric acid and disodium octaborate tetrahydrate—there is another emerging form of boron fertilizer: liquid boron , which can serve as

By late December, China’s fertilizer market has exhibited clear structural characteristics. On the raw material side, sulfur shows a pattern of domestic price pullback alongside high-level volatility in imported material, while phosphate rock, sulfuric acid, and synthetic ammonia remain broadly stable. The phosphate fertilizer market continues to implement policy-driven supply assurance and price stabilization, with prices remaining steady despite rising cost pressure. The po

As modern agriculture places increasing emphasis on crop health and quality, nutrient imbalance has become a central concern in crop management. Among various nutritional disorders, iron chlorosis is one of the most widespread and impactful problems affecting a wide range of crops, directly constraining growth, yield, and quality. Among the available iron supplementation solutions, EDDHA-Fe, as a highly stable chelated iron fertilizer, has gradually emerged as a preferred opt

Among the 17 essential nutrients required by plants, magnesium occupies a uniquely critical position . It is not only the only metallic element in the chlorophyll molecule , but also a key activator of plant energy metabolism . For modern agriculture—especially the cultivation of high-value cash crops—understanding the fundamental role of magnesium and mastering its efficient supplementation strategies is indispensable for achieving both high yield and premium quality. The Fi

From January to November 2025, China’s fertilizer imports and exports showed a clear pattern of rising export volumes and prices alongside a slight decline in imports. Toward year-end (mid-December), the market centered on three main themes: policy-driven price stability and supply assurance for phosphate fertilizers, supply–demand tug-of-war in the potash market, and policy regulation of upstream raw materials. Phosphate rock, sulfur, and sulfuric acid exhibited divergent tr

Many tomato growers have experienced this common challenge: abundant flowering during the blooming stage, yet after a cold snap or strong wind, flowers drop heavily, resulting in poor fruit set. Even when fruits do set, misshapen or undersized fruits are frequent, significantly reducing yield and market quality. In fact, the flowering stage is the critical window that determines final tomato yield. During this period, plant demand for phosphorus (P) and potassium (K) rises sh

In agricultural production, phosphate fertilizers are essential to crop growth and development. What many may not realize is that the starting point of most common phosphate fertilizers is often a pale yellow, brittle crystal or powder — sulfur . With a global annual output of approximately 70 million tons , around 80% of sulfur supply comes as a byproduct of petroleum refining and natural gas processing , making it deeply intertwined with the global energy landscape. Sulfur

In early December 2025, China’s fertilizer market entered a critical phase characterized by across-the-board cost increases and a continued tight supply–demand balance. Rising prices of raw materials such as sulfur and sulfuric acid have pushed up costs for phosphate fertilizers and potassium sulfate. Meanwhile, the potash market remains firm at high levels, supported by concentrated supply and rigid winter stocking demand.In the international market, a pattern of strong dem

I. The Plant’s “Small-Molecule Expressway”: Why Are Amino Acid Fertilizers Becoming a New Trend? Unlike traditional fertilizers that must be converted by soil microorganisms before plants can absorb them, amino acid fertilizers exist in small-molecule form and can be directly absorbed and utilized by plant cells. This enables instant, precise nutrient delivery, perfectly suited to modern efficient and environmentally friendly cultivation practices. In simple terms, amino acid

Plants determine whether an element is essential based on their own physiological and developmental needs. Elements in plant tissues are classified as essential  and non-essential . According to the required amount, essential nutrients are divided into macronutrients — nitrogen (N), phosphorus (P), and potassium (K); secondary nutrients — sulfur (S), calcium (Ca), and magnesium (Mg); and micronutrients — boron (B), iron (Fe), copper (Cu), zinc (Zn), manganese (Mn), molybdenum

China’s Annual Contract Anchors Global Pricing While Supply–Demand Dynamics Shape the Market In November 2025, China finalized its 2026 annual potash import contract—an event that quickly became the central anchor for global potash pricing. The agreement not only halted the price slide in several emerging markets but also ignited China’s winter fertilizer stocking season. At the same time, rising sulfur and sulfuric acid prices pushed production costs sharply higher, placing

In modern precision viticulture, Monopotassium Phosphate (0-52-34) has evolved from a supplementary foliar fertilizer into a central “physiological regulator”  applied across the entire grape growth cycle. Its value extends far beyond supplying phosphorus and potassium. What truly elevates MKP is its unique scientific profile—high solubility, pure nutrient forms, and synergistic absorption—which allows it to precisely activate photosynthesis, stress resistance, and quality f

As the most fundamental building blocks of living organisms, amino acids play an irreplaceable role in crop growth, physiological metabolism, and stress resistance. They are widely applied as functional nutrients in modern agriculture. Based on raw material sources, amino acids can be categorized into plant-based  and animal-based  types; based on production technology, they can be divided into hydrolyzed amino acids and enzymatically hydrolyzed amino acids . This article pr