The academy is about to start again, and the students are starting to come back one after another, and most of the new students are coming to the academy early, and the whole town becomes noisy.

However, since Husley and the others left, Jiayi has lost a few friends, and he has been very busy last semester, except for Husley, except for a few of them, the people he knows are the most familiar with Sitlin Terry, except for his classmates.

Jiayi came to the greenhouse, checked the rice he planted again, recently there are a lot of barnyard grass growing in the rice field, in order to weed, Jiayi found a lot of methods, and also went to the library of the college to check a lot of information, but did not find any good way.

Mages rarely care about agricultural production, so there are no special spells for weeding, but there are lawns, but as long as Jiayi is still in his mind, he will never want to mow the elven rice and barnyard grass to a certain height.

There is no special agricultural druid in this world, and even if you find a druid, it is very likely that you will not have this spell, because in their eyes, rice seedlings and barnyard grass have the same status.

In order to get rid of these weeds, Jiayi and they couldn't find a good way, so they could only pick them out artificially and pull them out. I came here today to check to see if the weeds have been removed and whether they have grown back.

He walked along the edge of the rice field, and although he hadn't seen it for several days, there was nothing unusual about the rice seedlings in the rice field, but when he came back from a circle, near the entrance of the greenhouse, he found that the rice plants there were greener and looked more robust.

Originally, this was not easy to see, but after turning around, the gap between the rice plants near the door and the depths of the greenhouse was still quite large, and he deliberately pulled a rice to the door for comparison, which was indeed different.

Jia Yi was a little puzzled, the elf rice in the entire field here is a batch of seeds, the same batch of seedlings, there is no difference when the weeds were pulled a few days ago, and there is no difference in the growth process, why this small piece of elf rice should grow better.

He lowered his head and searched carefully at the roots of the elven rice, and found some gray-black powder on the water surface of the roots of several elven rice, and found some gray-black powder in the separated leaves, he controlled the wind to collect these powders, and collected a small handful, he pinched it with his hand, and felt a familiar slippery feeling.

Because Jiayi's elf rice is not planted on the elf island, there is always a soft tender green, and the ability to resist diseases is weaker, so far there is no problem, mainly because it is not planted in the laboratory, or planted in the greenhouse, the management is fine, the environment is good, there is no wind and rain, low temperature and cold wave and other invasions, and the external impact is small, so there are few pests and diseases.

But he has always had a worry that when it comes to real large-scale planting, the conditions cannot be so good, changes in the external environment, pest diseases are possible, especially the invasion of diseases, the damage to crops is worse than pests.

When he was on Earth, bananas encountered several disease crises that almost went extinct, and even before he crossed over, the study of banana diseases has always been an important topic.

Jiayi couldn't predict what diseases the elf rice might get, so he could only find a way to enhance the robustness of the elf rice in order to be able to resist possible diseases.

Now seeing that this piece of elf rice has grown stronger than the rest of the rice, Jia Yi can't help but feel a burst of surprise. He rubbed the gray-black powder on his hands again, and hurriedly ran towards his home.

As soon as he returned home, Jia Yi found March and asked, "Did you give anything to the elf rice?"

Planting elf rice greenhouse is only for Jia Yi and their gang to enter, since it is not Jia Yi himself, it is Ma Qi and them, even if it is not Ma Qi, she should know something.

March was stunned by Jiayi's question, looked at Jiayi suspiciously, and then suddenly remembered something unusual, became distracted, and said, "No... It's nothing, isn't it just applying some fertilizer as you instructed? ”

Looking at March's appearance, there must be a problem, and Jia Yi asked, "What kind of fertilizer did you apply?" I don't mean anything else, but I found that the elf rice in the greenhouse grows better, and I want to make sure. Did you use something other than the fertilizer I made?"

Jiayi in order to make the harvest of elf rice better, synthesized some compound fertilizer in the laboratory, used to fertilize elf rice, in addition to grass two days ago, let March they chase some fertilizer, he didn't know when it should be more appropriate, so he could only use a small amount of many times, the waste is a little waste, but the effect is very good.

March looked at Jiayi and made sure that Jiayi was not lying, so he said embarrassedly: "Didn't you put some ashes of the Sludge Monster in the laboratory, I accidentally took the wrong one when I applied fertilizer, and I put the ashes of the Sludge Monster into the rice field, but I found it early, and only used a little on the periphery, so I changed it back to the commonly used fertilizer." Did it get better, I only used a little bit?"

Kaichi nodded slowly: "It's even better than I imagined." ”

Then he said to himself, "How can it be so magical?"

The ashes of these sludge monsters are when he went to the garbage valley that time, encountered a large group of silt monsters, fought hundreds of rounds, killed thousands of silt monsters, and burned the silt monsters to ashes.

......

......

Kaichi immediately rushed back to the lab and began experimenting with the ashes of the Sludge Monster.

He first wanted to determine the composition of the Silt Monster Ash, but he soon gave up, the composition of the Silt Monster Ash was very complex, and there were many different substances in it, and Jiayi did not have a precise way to separate it.

When he analyzed the weak copper and iron components, as well as silver, gold, carbon, silicon and other components, he found that there were still many components that could not be analyzed, and he realized that he could not determine the specific composition of the ashes, so he had no choice but to give up.

The ingredients are too complex, and all kinds of different elements are mixed and combined into different compounds, even if they are two simple ingredients, they can be combined into several different compounds.

At this time, the elements do not have a complete classification, the mages have known all kinds of elemental elements, as well as various compounds, and have a certain understanding of the reactions between the elements, but there is a lack of a complete theory, the classification of each element is not systematic, even if Jiayi separates an element, it has to distinguish whether it is a compound or an element.

In the end, he could only classify the ashes of the Sludge Monster as a kind of ash in general terms, and as for the specific ingredients, he could only simply say what they contained, what kind of ingredients they were, and whether they could be synthesized artificially or not—after all, they couldn't even be sure what the specific ingredients were.

This ash is not very soluble, so it is not used in much of the plant, but it has a miraculous effect on the growth of plants, especially for magic plants, which is better than ordinary plants.

In order to determine the nature of this ash, the laboratory, which had been slowly idle, became lively again, and was replanted with new and different plants on the growth shelf.