The rainy season at the beginning of the year brings major changes after a long dry season in the middle of the previous year. As a result, the environment drastically becomes very humid and water availability will be very abundant. The condition of agricultural land in the rainy season will be very troubled with many problems, from flooding on the land to the attack of plants by pests and diseases such as fungi, bacteria, and viruses.

Palm oil has an optimal water requirement of around 300-350 liters/stem/day. During the rainy season, the water demand limit is exceeded so that there is a pool of water on palm area. Puddle can trigger decay of palm roots and reducing production. Another thing that can happen is improper fertilization. The fertilizer will dissolve into puddles so it can’t be absorbed. If there is too much puddle, it can cause the root to rot and the appearance of fungus on the palm oil.

Mertani is conducting a project in controlling groundwater levels together with large palm oil plantations in Indonesia using the IoT Water Level which is placed on three land zones namely the upper, middle, and lower zones. Each block has an area of around 30 hectares. IoT Water Levels are placed on each zoning and are used to reach 130 palm oil trees per hectare.

IoT Water Level placed to measure groundwater level based on the actual range of groundwater at a predetermined time. This range of data is used by the manager to determine anticipation and also future projections regarding the treatment that must be carried out.

“Water Level is already commonly used by plantation companies, but it cannot be used optimally because it hasn’t been integrated with the IoT system, software, and storage in taking data. Some plantations have implemented Water Level of foreign products and the results are very different from what was expected. With careful consideration, plantation managers should be wise in choosing tools that suit their land conditions. The selection of domestic tools will also greatly help them in terms of the support services provided. For this reason, Mertani is ready to facilitate their needs. “-CEO of Mertani-

Land fire is a hot topic in mid-2019 and is the largest fire that has occurred after 2015. There’s a lot of discussion about the causes of forest and land fires. Differences of opinion through different perspectives have sprung up starting from the side of the government, the public as well as the disadvantaged corporation. The government considers this to be a disaster that happens every year and there is no clear point on the root of the problem.

Government statements will form public opinion. Media that deliver information also plays a crucial role in this regard. Many people blame the government. As for those who blame the corporations like some plantations and also many who argue that this is simply a natural disaster caused by a heatwave due to El Nino. How come?

Forests and burning land have the characteristic of peat soils. Peat soil is a water-saturated soil formed from the deposition of remnants of decayed plant tissue so that it reaches a thickness of 50 cm (Indonesian National Standard Design-R-SNI, National Certification Agency, 2013). Peat soils have the characteristic of being able to bind large amounts of water, but certain conditions make peat soils very easy to lose water content. At the level of macro water storage in peat soils, evaporation will very easily occur. In this process, water loss will very easily occur and automatically the peat soil will be very dry. The abundant content of organic matter in peat soil illustrates the amount of carbon content (C-organic) so that in long dry conditions, hot and dry air can ignite a fire that triggers a fire.

Determination of groundwater level on peat lands is regulated in Peraturan Menteri No. 337 Tahun 2017 concerning Procedures for Measuring Groundwater in Peat Ecosystem Arrangement Points. Article 5 of the Ministerial Regulation states that there are two ways to measure groundwater levels, namely manual and automatic. In that article, manual measurements of groundwater levels can be done using a measuring rod, whereas automatic measurements are carried out using a data logger.

The role of groundwater data collection using IoT Water Level will be very important when compared with manual measurement. The existence of IoT Water Level technology allows measurement of groundwater level everyday. IoT Water Level can be adjusted according to land conditions. The use of IoT Water Level can increase operational efficiency by up to 30%. A practical way to find groundwater level data only through a user’s mobile or PC.