THE EFFECT OF HERMETIC STORAGE TO FRESERVE GRAIN QUALITY IN TIDAL LOWLAND, SOUTH SUMATERA
1Rudy Soehendi. 2Martin Gummert, 1Syahri, 1Renny Utami Somantri, 1Budi Raharjo, and 1Sri Harnanik
1IAARD researchers at Assessment Institute for Agricultural Technology (BPTP)-South Sumatra. Jl. kolonel H. Barlian Km. 6. Palembang – South Sumatra. Email: email@example.com
2international Rice research institute (IRRI) Postharvest Development Program Leader, program 4: Value Chains and Products from Rice. Email: firstname.lastname@example.org
Abstract. The researchers was aimed to find out the effects of hermetic storage in order to preserve grain quality in tidal lowland, South Sumatera. In tidal lowland, grain losses during storage may reach 2.24%. An easy storage method to be applied and identified to be able to preserve grain quality is hermetic storage. The research was carried out in two villages; Banyuurip and Telang Sari, Tanjung Lago Sub-district, Banyuasin District, for 6 months, from April to October 2011. The research was arranged in randomized complete block desigh by 6 treatments and 5 replications, treatments consisted of IRRI superbag and plastic bag, with storage period of 0, 3, and 6 months. Parameters observed ware moisture content, O2 And CO2 Levels, germination, and insects infestation (type and member). The result showed that the use of hermatic storage system was better in preserving grain quality than farmer’s common practice. This was defined by higher percentage of germinated grains and lesser population of both rice insects types:weevil (Sitophius oryzae) and grains borer (Rhizopertha dominica). This was because hermetic storage system decreased O2 and increased CO2 levels during storage period.
Keywords: Hermetic storage, grain quality, paddy, germination, insects infestation
Main staple food like rice is one of human basic needs, so do clothe and shelter. Thus, the demand for food in food in both number and quality constantly increases. Loss in majority food products, such as grains is caused by excessive moisture content and oxygen supply as well as pests. IN tropical region, products stored for 6 months had lost abaut 30% because of pests. In tropical region, products stored for 6 months had lost about 30% because of pests (berginson 2002). Imdad and Newangsih (1999) said that in developing countries including Indonesia, total agricultural product loss is estimated to reach 25-50% of total production. FAO reported the loss of crop yields in developing countries ranges from 10-13% which about 5% is caused by varios types of storage pests.
Nugraha et al. (2015) suggested that grain loss during storage period on irrigated agro-escosystem was 1.37%, Meanwhile on rainfed land and tidal lowland were 1.28% and 2.24%, respectively. The high loss relates to the Indonesia wet climate that causes high humidity and temperature. These coditions lead to difficulties in maintaining grain moisture content below 14%. Seed tissue metabolism is strongly influenced by moisture content, which could spontaneously generate heat and cause loss of products.