[Effect Observation] Performance of a Humic Acid–Based Controlled-Release Nitrogen-Potassium Fertilizer Specifically for Garlic
Release Date:
2018-05-22
Garlic is one of the vegetable crops with relatively high fertilizer requirements, and its nutrient needs vary at different growth stages. The Soil Ecology Research Institute of Nongda Fertilizer conducted fixed-site field trials in Yangzhuang Town, Laiwu City, Shandong Province, and Ermiao Township, Lanling County, Shandong Province, to evaluate the performance of Nongda’s specialized nitrogen- and potassium‑controlled fertilizer for garlic. On January 17, May 9, and May 17, on‑site surveys and demonstrations were carried out. Yield measurements based on soil sampling showed a 25.6% increase compared with conventional fertilization. 01 Resistance to Frost Damage — January 17: Key findings: 1. The crop withstood cold air temperatures as low as −13°C, with no seedlings dying; 2. Root development was robust, outperforming other fertilizers,
Garlic is one of the vegetable crops with relatively high fertilizer requirements, and its nutrient needs vary across different growth stages.
The Soil Ecology Research Institute of Nongda Fertilizer Industry has selected, respectively, Yangzhuang Town, Laiwu City, Shandong Province; Ermiao Township, Lanling County, Shandong Province From the Agricultural University Nitrogen- and potassium‑controlled fertilizer specially formulated for garlic The effects were evaluated through site-specific follow-up trials, with field surveys and on-site observations conducted on January 17, May 9, and May 17, respectively.
Yield sampling showed a 25.6% increase compared with conventional fertilization.
01
Resist frost damage
January 17th
Features:
1. Having withstood cold air as low as -13°C, not a single seedling died;
2. The root system is well-developed; compared with other fertilizers, the average number of roots increased by 17, and root length grew by 1.9 cm.
3. Rhizomes swell rapidly; compared with other fertilizers, their diameter increases by an average of 0.85 cm.
4. The plants are robust, with large, fleshy leaves and few yellowing leaves.
5. The garlic-specific controlled-release nitrogen–potassium fertilizer exhibits partial release, with no waste observed.
6. Earthworms have appeared in the soil.
Comparison chart:
Comparison Diagram of Results in Yangzhuang Town, Laiwu City, Shandong Province
Comparison Diagram of Outcomes in Ermiao Township, Lanling County, Shandong Province
Cause Analysis:
1. Nongda Fertilizer’s active humic acid fertilizer stimulates garlic root growth, enhances the plant’s uptake and conversion of nutrients, boosts cell membrane activity, and improves cold tolerance.
2. Nongda Fertilizer’s active humic acid fertilizer contains an ample supply of humic acid. Humic acid is the core component of organic matter; when applied to the soil, it enriches the soil and improves its structure. At the same time, it helps regulate leaf photosynthesis, promoting larger, deeper‑green leaves and robust plant growth.
3. Nongda Fertilizer’s controlled-release nitrogen fertilizer for garlic is applied in accordance with the crop’s nutrient requirements, minimizing early‑stage waste and ensuring effective topdressing later in the growing season.
02
Significant production increase
May 9th
Features:
1. The average weight of garlic bulbs was increased by 24.5%–35.7% compared with other fertilizers.
2. The biological yield of individual garlic plants increased by 27.0%–47.6% compared with other fertilizers.
3. Root biomass increased by 18.8%–32.4% compared with other fertilizers.
4. The plants exhibit high greenness retention.
Comparison chart:
Comparison Diagram of Results in Yangzhuang Town, Laiwu City, Shandong Province
Comparison Diagram of Outcomes in Ermiao Township, Lanling County, Shandong Province
03
Looking forward to a bountiful harvest.
May 17th
Features:
1. The plants exhibit vigorous growth, with an average plant height that is greater than that achieved with other fertilizers. 11.7% , the pseudostem height increases 9.8% , the pseudostem diameter increases 36.4% ；
2. Bulb diameter, increased compared to other fertilizers 13.6% ；
3. The root system exhibits robust growth, with a greater number of roots compared to other fertilizers. 30%；
4. Sampling and yield measurement show higher yields compared to other fertilizers. 25.6% 。
Comparison chart:
Comparison Diagram of Results in Yangzhuang Town, Laiwu City, Shandong Province
Comparison Diagram of Outcomes in Ermiao Township, Lanling County, Shandong Province
The combination of superior varieties, high-quality fertilizers, and optimal cultivation practices is a key guarantee for achieving high yields in garlic. Under conditions of adjacent plots, the same variety, and identical management, using Nongda Fertilizer’s specialized humic‑acid‑based controlled‑release nitrogen‑potassium fertilizer for garlic delivers particularly outstanding results.
After the field demonstration, both distributors and farmers unanimously agreed that only tangible results truly matter. Nongda fertilizer not only boosts yields but also improves soil quality, enhances soil fertility, and mitigates the challenges of continuous cropping, ensuring consistently high garlic production—making it a trusted, top‑quality fertilizer that farmers can rely on!
Only with core technologies for humic acid activation can we produce effective, high-quality humic acid fertilizer products!
For proven product performance, Nongda Fertilizer Industry consistently hosts “field‑trial demonstration events,” bringing farmers directly to the fields so they can see the results for themselves.
Let crops speak for themselves—let fertilizer efficacy do the talking; let the soil thrive—let results bear witness. Nongda Fertilizer Industry is continuously strengthening its “field‑level” capabilities, and we look forward to meeting you at the next “field.”
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