Survival rate (SR) and cultivation productivity are important aspects in shrimp farming. These two aspects are closely related to pond conditions in certain seasons. Indonesia has two seasons, each with its own distinct characteristics. These characteristics lead to a certain time preference model in starting a cultivation. Every stage of cultivation, from stocking to harvesting, requires favorable weather.
Farmers need to consider the best time to start shrimp farming. This is due to the fact that cultivation conditions are influenced by weather at certain times. Shrimp farming is closely related to weather conditions. Temperature and rainfall have impacts on shrimp pond conditions, and have a chain effect with other parameters, such as salinity, pH, and dissolved oxygen (DO). These parameters are interrelated with each other and determine how the cultivation runs.
pH is the physical parameter that is most closely related to rainfall and temperature. pH refers to the degree of acidity to state the level of acidity or alkalinity of a substance or solution. The pH value is influenced by various factors, including the soil and source water acidity, rain and runoff, low alkalinity, stocking density, and others.
Based on research conducted by JALA, SR and cultivation productivity can be influenced by various factors, one of which is weather. Cultivation productivity can be increased by taking the cultivation starting time into consideration. It focuses on achieving optimal SR. It is not impossible to achieve successful cultivation if the SR is optimal.
Figure 1. Graphic of the relationship between rainfall and stocking time.
JALA’s research findings present interesting facts on the best time to start cultivation. According to the findings, the best time to start cultivating is in July. Furthermore, January and September also give the best SR at the end of cultivation. Good final results are assumed to be recorded after 3-4 months of cultivation.
Figure 2. Graphic of the relationship between average productivity and time to start cultivation.
The findings of the presented research have been concluded based on the data available on the cultivation management platform. Therefore, this insight is accurate enough because it uses comparisons based on data inputted by farmers in the field. Although it is accurate enough, in practice, this insight still needs to be adapted to conditions in the field. Therefore, it is important for farmers to be fully aware of their ponds' condition.
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