Which three types of fertilizers are the most harmful to leeks, scallions and garlic? And which three types are the most beneficial? Remember these points.
The old farmer has been farming all his life. He is most afraid of hearing a novice complaining that the leeks look like withered grass, and the leaves of the scallions and garlic are yellow and shriveled. In nine out of ten cases, the roots have completely rotted. The culprit is definitely that bucket of raw manure water. Raw manure from humans, unfermented chicken manure and duck manure - these three definitely must not be touched.
When such "powerful" fertilizers are applied to the soil, the high temperature generated during the fermentation process can directly "burn" the root systems. The soil maggots, sensing the smell, will burrow in and settle down. The roots of the leeks are torn to pieces. This is what is known as "fertilizer damage". Some people take the easy way out and directly spread fresh manure on the soil. Within a few days, the entire vegetable garden is overrun with soil maggots. The leeks break easily when picked, emitting a foul smell. It's a waste of effort.
Burnt plant ash, well-rotted sheep manure, and superphosphate - these three are the favorites. Burnt plant ash is the "king of potassium fertilizers" and when applied to the roots, it can not only replenish potassium to make the stems thicker, but also kill bacteria and disinfect the soil. Soil maggots are most afraid of this alkaline effect.
Decayed sheep manure is docile in nature, has a long-lasting fertilizer effect, does not damage the roots when used for soil improvement, and can make the soil loose and breathable. Superphosphate is an even more powerful tool. It is rich in calcium and can not only prevent dry tips and yellow leaves but also make the green onions firmer and the leeks thicker. Don't overapply fertilizer; use a thin but frequent application. Dig a trench five centimeters away from the root and bury it there. This is the traditional vegetable-growing method of the old school.
