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INDONESIA
Buletin Iptek Tanaman Pangan
Published by Kementerian Pertanian
ISSN : -     EISSN : -     DOI : -
Core Subject : Science, Agriculture,
Agriculture, Biological Sciences & Forestry Computer Science & IT
Arjuna Subject : -
Articles 5 Documents
 1 
Search results for , issue "Vol 10, No 1 (2015): Juni 2015" : 5 Documents clear
Kontribusi Hara Sulfur terhadap Produktivitas Padi dan Emisi Gas Rumah Kaca di Lahan Sawah A. Wihardjaka; Poniman Poniman
Iptek Tanaman Pangan Vol 10, No 1 (2015): Juni 2015
Publisher : Puslitbang Tanaman Pangan

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Abstract

National food demand, especially rice increases in accordance with the rate of population growth. The availability of rice mostly is still relying on the intensification of irrigated and rainfed lowlands, through applying balance nutrients fertilization, including the management of sulfur (S). Sulfur as one of the essential nutrients, is required for protein and enzyme syntheses, amino acids formation and metabolic acticities in plants. However, the program of rice production increases is also impacting on the increase of atmospheric greenhouse gases. The objective of this paper was to discuss sulfur management on rice production system and its impact on greenhouse gas emissions in lowland rice areas in Indonesia. Sulfur fertilization of 20 kg S/ha along with the application of N, P, K fertilizers was considered adequate to provide better plant growth and to yield of 5 t grains/ha. Sulfur fertilization should be applied before active tillering phase by broadcasting on the surface of flooded lowland rice field to obtain higher efficiency of S fertilizer. Besides increasing crop yield, sulfuric fertilization on rice crop played a role in mitigating greenhouse gases emission. The sulfuric fertilizer application reduced atmospheric greenhouse gases (GHGs) release, especially CH4 and N2O from lowland rice. Balance sulfur fertilization could improve yield and grain quality of rice as well as mitigated greenhouse gas emissions from the lowland rice areas.
Revitalisasi Pemupukan Padi Sawah Berbasis Lingkungan Erythrina, Erythrina; Zaini, Zulkifli
Iptek Tanaman Pangan Vol 10, No 1 (2015): Juni 2015
Publisher : Puslitbang Tanaman Pangan

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Abstract

IAARD in the Ministry of Agriculture has produced a wide range of technology for site specific nutrient management (SSNM), in form of soil-test kit equipment and software. This paper presents the concept of revitalization the system and direction for an efficient fertilization usage. A more rational use of fertilizers based on a specific locational need is expected in the long term to reduce the amount of fertilizer subsidies, without reducing the rice production. The effect of SSNM had been shown to give opportunities for yield increases per unit of fertilizer, to reduce loss of fertilizer, to improve agronomic efficiency and at the same time had positive influence on the environment. SSNM could be used to develop plan for fertilizer requirement per farmers’ group (RDKK) which in reality was often not compiled by field extension in accordance with the area of land and fertilizer needs. Inaccurate RDKK preparation had been causing problem on the distribution of subsidized fertilizer, because it was often showing an overestimate of the amount of fertilizer needed, as compared with the availability of fertilizer. Funds allocated for the preparation of RDKK could be routed to the procurement of hardware such as computers and to train the agricultural extension workers in each Agricultural Extension Center in Indonesia, to be able to access the website-specific nutrient fertilization through the internet. Assessment Institute of Agricultural Technology located in every province could facilitate this technology transfer process. 
Kontaminasi Aflatoxin dalam Rantai Distribusi Kacang Tanah di Indonesia A. A. Rahmianna; Joko Purnomo
Iptek Tanaman Pangan Vol 10, No 1 (2015): Juni 2015
Publisher : Puslitbang Tanaman Pangan

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Abstract

The substance is very toxic, which may cause health problem when consumed by human or by animal. of the twelve aflatoxin members, the B1-aflatoxin was reported as the most prevalence in Indonesia, and it was also the most toxic. Therefore, B1-aflatoxin was used as a criterion for the maximum tolerable limit of aflatoxin content in food and feed stuff. Aflatoxin B1 contamination was reported on groundnut grains sold in the retail traditional markets throughout Indonesia. The contaminated grains were noted derived from the nationally produced as well as from the imported ones. The aflatoxin contamination increased as the grain of groundnut reached the final retail markets destination. Contaminated grain processed into various food retained the aflatoxin in a toxic form. The negative effect on health from consuming food contaminated by aflatoxin must be minimized. The government of Indonesia had established food safety regulation regarding aflatoxin contamination, but prevention through the proper cultural practices and post harvest handling of groundnut, were equally important measure.
Determinan Agronomis Produktivitas Jagung Sutoro Sutoro
Iptek Tanaman Pangan Vol 10, No 1 (2015): Juni 2015
Publisher : Puslitbang Tanaman Pangan

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Abstract

The national maize productivity is lower than its genetic potential of the variety. Maize yields varied among regions, due to differences of the technological practices, which mainly included seed quality and variety planted by farmers, rate of fertilizers and the availability of soil moisture. Productivity could be optimized by planting hybrid variety and supplying nutrients through fertilization and providing adequate soil moisture. Open pollinated variety was reported as more suitable for the suboptimum environment. To mitigate the climatic changes which were difficult to predict, proper cultivation techniques and water conservation were the determinant keys for increasing maize productivity. General climatic condition was not a limiting factor for producing maize in Indonesia. Expansion of planted area could be carried out on almost all kinds of farm-lands, provided the three determinant yield factors were implemented. When those program was implemented, it was suggested that Indonesia would reach self sufficiency in maize production.
Perbaikan Ketahanan Kedelai terhadap Hama Ulat Grayak Titik Sundari; Paramita Sari
Iptek Tanaman Pangan Vol 10, No 1 (2015): Juni 2015
Publisher : Puslitbang Tanaman Pangan

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Abstract

Armyworm (Spodoptera litura) is a major pest on soybean. Severe attack of this pest could cause 100% leaf defoliation and harvest failure. Soybean resistant to armyworm follows antibiosis and antixenosis mechanism. Antibiosis resistance was induced by certain chemical substances in the parts of plant that disturbed the physiological and biological processes of pest. Antixenosis resistance was a mechanism by plant morphological barrier that could affect the behavior of pests, such as leaf morphology, especially related to the pubescense density. The availability of soybean variety resistant to armyworm was expected to reduce the use of insecticides and to minimize the harvest failure. Soybean variety resistant to armyworm would be possible to be developed considering the source of genes for resistance had been identified, such as variety Sodendaizu, Himeshirazu, IAC-100, IAC-80-596-2, Bay, and W / 80-2-4- 20. An effective and efficient breeding method had also been available, through repeated backcrosses assisted by DNA markers as selection indicator. IAC-100/Kaba-G-80, IAC-100/Kaba-G-67, IAC-100/Burangrang-P-95, IAC-100/Kaba-G-47, and IAC-100/Burangrang-G-119 were reported as promising lines, having moderately resistance to resistance to the pest, each line derived from the progenies of crossbreeding using IAC 100 as parent.

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