Effectiveness of Difference Soil and Manure Mixture on Growth and Yield of Bak Choy Planted in Bags

The study of soil groups, soil types, and soil characteristics is very important for the cultivation of crops in Cambodia. Selecting soil types that are not suitable for the type of crop will result in poor crop growth, slowness, and low yields. In the same way that the cultivation of crops in the production of vegetable crops is the same, that is, choosing the type of soil that is suitable for the crop is a point to consider and pay attention to. Due to some geographical areas in some communes, the topography is sandy or rocky, and the soil is hard, making it difficult for farmers to prepare parallel cultivable land where some people have less land and try to cultivate it using plastic buckets. Cement or bags to grow as a vegetable or grow to get some yield just to meet daily food needs; avoid spending money to buy vegetables from the market. Bak Choy is a crop that can grow on almost any type of soil, especially alluvial soils. It also has many benefits for the body, such as strengthening bones, the immune system, cancer cells, and so on. However, the cultivation of kale also encounters a number of problems, such as poor growth, low yields, pests, and diseases, especially the technique of choosing the wrong soil mixture, which affects the growth and yield. Not so good. A comparative study of different levels of soil and manure mixes on the growth and yield of Bak Choy in AmpilTapok commune, Orang Ov district, ThbongKhmum province. On the growth and yield of the first treatment (T1), the use of soil mix with cow dung, the second treatment (T2), the use of soil mix with chicken manure, and the third treatment (T3), the use of soil mix with pig manure is grown using a mixture of soil mixed with chicken manure (T2), which grows well and gives high yields in other ways

Differences Between Breeding and Weaning Khmer Channa Striata and Vietnamese Channa Striata at Freshwater Aquaculture Research and Development Center, Cambodia

This study aimed to analyze the eating practices of Channa striata species, examine breeding, hatching, yield, and post-mortem survival rates, and measure the growth and feeding of Channa striata. The investigation was divided into two main stages. In the first stage, only male fish were injected with the hormone HCG during incubation. In the second stage, both male and female fish received the hormone concurrently. One PG was added to the initial injection at a dose of 500 IU/kg. The second dose was administered at a rate of 300 IU/kg, while the female fish received a dosage of 1000 IU/kg. After three days of consuming their food reserves, the young fish (powder or hatchlings) are fed. Moina is fed to them four times a day for ten days during this phase. When the fingerlings are 45 to 60 days old, the third step in the weaning process involves feeding them a mixture of Moina and trash fish four times a day. This continues until the fish are old enough to consume their own food, at which point they can begin to be raised for meat. The entire Completely Randomized Design (CRD) procedure was used to design the experiment, with one restriction: only the Khmer and Vietnamese Channa Striata species were included. The average fertilization rate for Khmer Channa Striata fish was 67.50%, with an average hatching rate of 62.86%. In comparison, the Vietnamese Channa Striata fish had an average fertilization rate of 47.25% and an average hatching rate of 87.13%. Vietnamese Channa Striata fish also had a higher average survival rate (88.50%) compared to Khmer Channa Striata fish (92.29%). After harvest, Vietnamese Channa Striata fish had an average weight of 334.0 g/head and an average length of 27.63 cm, exceeding the Cambodian carp's average weight of 214.9 g/head and average length of only 23.42 cm. For Khmer Channa Striata fish, the average monthly death rate decreased from 2.06% to 0.022%. Vietnamese Channa Striata fish saw a similar decrease, with their average monthly death rate going from 2.46% to 0.022%. While Vietnamese Channa Striata fish consumed an average of 333 g/head to 1269 g/head of feed, Khmer Channa Striata fish received between 298 g/head and 1013 g/head of feed. This study discovered that while there remain some issues with the growth chain and feeding habits, the benefits of Khmer Channa Striata fish, such as their higher fertility rate and survival rate after three days of reserve, were greater than those of Vietnamese Channa Striata fish. Researchers should focus on ongoing studies to address the issues raised by these findings, particularly in research facilities that are still seeking collaborators to support deeper research into fish species and identify superior-quality fish for cultivation by farmers

Effect of Calcium on the Growth of Melon (Cucumis melo L.)

Melon (Cucumis melon L.) is an important crop for the world economy, and it is one of the most valuable crops in the market. The cultivation of melon in Cambodia is still low due to the unclear use of varieties and the inappropriate cultivation techniques that cannot achieve high yields. This is the reason why this research is conducted. The objectives of this research are: 1. to compare the growth of melon varieties with calcium in Svay Rieng province condition, 2. to study the appropriate level of calcium fertilizer on melon yield in the supplementary stage, and 3. to study the fruit quality of the five melon varieties. This experiment was arranged into Randomized Complete Block Design (RCBD) with 4 replications and 20 treatments equivalent to 80 plots totallyat the Agricultural Station of Svay Rieng University. The results showed that the application of calcium fertilizer and foliar spraying once every 7 days resulted in the highest growth of melon plants. The use of different varieties showed that the melon varieties V4 (Lady Green = 547) and V2 (Lady Gold = 518) received the highest number of seeds. Thus, in summary, comparing the growth of 5 melon cultivars with 4 levels of calcium fertilizer, the results showed that the application of calcium fertilizer and leaf spray every 4 days, every 7 days, made the melon crop. Growth, yield, and fruit quality are excellent. The use of different varieties showed that only the melon varieties V4, V1, and V2 are the best