STUDY OF THE SPREAD ECOLOGY AND MORPHOLOGY OF SAGO IN PRODUCTION FORESTS IN THE KPHP AREA, SORONG REGENCY (CASE STUDY OF MALAWOR VILLAGE AND KALGULIS VILLAGE, SORONG DISTRICT) Irnawati Irnawati, Muhammad Restu, Agus Rachmat, Siti Halimah Larekeng
1. Postgraduate Student, Faculty of Forestry, Hasanuddin University Jl. Perintis Kemerdekaan KM 10, Makassar, South Sulawesi (90245)
2. Faculty of Vocational, Hasanuddin University Jl. Perintis Kemerdekaan KM 10, Makassar, South Sulawesi (90245)
3. National Research and Innovation Agency, Indonesia
4. Faculty of Forestry, Hasanuddin University Jl. Perintis Kemerdekaan KM 10, Makassar, South Sulawesi (90245)
Abstract
This study aimed to map and understand the natural distribution area of sago in more detail in the Sorong district. This involves identifying the geographic areas where sago can be found as well as the environmental factors that support its growth which includes an analysis of the climate, such as optimal rainfall, temperature, and humidity for sago.
The results showed that the geographical area where sago trees grow varies from valley to coast and has a wet climate with relatively high rainfall, with a range of rainy days every month, namely between 9-27 days. Annual rainfall shows a figure of >2500 mm/year with peat soil types which are none other than organic soils that accumulate in waterlogged areas that have an acidic pH. The potential for trees per Ha is known to be 63.4 trees per clump of 4 Ha of natural sago. In contrast, two types of sago are known, namely Tuni sago (Metroxylon rumphii Martius), the local language with the mention of ^wabilun^ sago, which is very much cultivated by local people with tree species, namely roots tend to be brownish red with root lengths ranging from 60 cm to by 1.5m. Stem height ranges from 7-16 m, with a thickness of bark ranging from 2.5-3 cm. The leaves tend to be bright green, and at the ends or edges of the leaves, there are small thorns on each strand ranging from 1-1.50 m. Compound interest (primary) (one bud) that rises to the top (bud).
The spines are found on the stem midribs ranging from 2 -10 cm, found on each leaf midrib, and not so many compared to the rattan sago spines (Metroxylon rumphii Martius). The length of the leaf midrib is in the range of 5-7.2 m, with each leaf midrib having a leaf range of between 100 - 210 leaves (type of frond) for the size of mature sago. Whereas sago thorn rattan (Metroxylon rumphii Martius) with the local language ^Fasenan^ can be seen from the leaf midrib that distinguishes it, namely the red-brown roots with root lengths ranging from 20 cm to 1 m. Stem height ranges from 5-15 m, with a thickness of bark ranging from 3-3.5 cm. The leaves tend to be yellowish green with a leaf pattern that is less dense (rare) with a leaf length ranging from 1-1.30 m. Flowers are almost the same as sago tuni in general, namely with compound interest (primary) (one bud) that rises at the top (bud) at the end of sago when sago is old. The fruit tends to be round and yellowish brown in color, which is found on each fruit stalk which consists of 15-30 fruit in each stalk. Sago thorn rattan tends to have long and many thorns on the stems and midrib of the petiole, so when taking the stalks and leaves, you need to be more careful. The length of the frond ranges from 4-6.3 m, with each leaf midrib having a range of between 30-60 leaves. The distribution pattern of Tuni sago (Metroxylon rumphii Martius) in Malawor village, South Sorong district, is in the category of clustered distribution because Id = 0.973 or less than <1. Furthermore, the distribution pattern of rattan sago thorns (Metroxylon sago Rottbol) in Klagulis village is in the clustered distribution category because Id = 0.791 or less than < 1 so that the large potential of sago tree species found in Sorong district is expected to obtain a better understanding of sago interactions with its environment in an effort to protect and use it wisely.
