Abstract. The presence of heavy metal on agricultural soils can be caused not only natural factors but also due to human intervention. Differences in management and lack of understanding of farmers in the production input of fertilizers and pesticides ensued in land ravaged. Periodic testing of paddy fields is necessary to minimize the contaminants from being absorbed by plants that will have an impact on health decline. The purpose of the assessment was to identify the heavy metal content in the terraced rice field in Sruwen Village, Tengaran District, Semarang Regency. Survey was conducted in February 2017. Sampling on terraced rice fields of different heights consisted of upper, middle, and upper down. Taken as many as eight single points and composed at a depth of 0-20 cm and 20-40 cm. The identification results showed that heavy metal content of Pb, Cd, and Cu were present at all altitudes. Heavy Metals Pb and Cd at a depth of 0-20 cm were higher from 20-40 cm in the upper and lower rice fields but lower in the middle rice field. Cu heavy metal at a depth of 0-20 cm was higher than 20-40 cm in all altitude land. The heavy metal content of Pb, Cd, and Cu was still below the heavy metal standard set by the European Union and India.

ABSTRAKBudidaya padi merupakan salah satu sumber potensial penyumbang GRK) seperti gas methan (CH4),yang menyumbang sekitar 11% berupa emisi gas CH4di dalam atmosfer. Budidaya padi menghasilkan emisi gas methan yang tinggi diperkirakan sebesar 2.57  T.g per tahun. Emisi gas methan diperkirakan sekitar 58 % berasal dari budidaya padi sawah terutama di pulau Jawa.Implementasi pengelolaan tanaman terpadu (PTT) padi sawah ramah lingkungan diharapkan mampu menekan emisi gas methan. Pengkajian telah dilaksanakan dengan tujuan untuk mendapatkan paket teknologi PTT padi Ramah Lingkungan yang  meningkatkan hasil padi dan menurunkan emisi gas methan pada lahan sawah irigasi. Pengkajian dilahan petani (“Onfarm research”) telah dilaksanakan pada daerah penghasil var. Rojolele yaitu di Desa Gempol, Kab. Klaten dari bulan Maret sampai bulan September 2016 seluas 1,8 ha yang melibatkan sembilan petani binaan, setiap petani seluas 0,20 hektar. Rancangan Acak Kelompok digunakan dengan delapan ulangan. Duajenis PTT Padi Ramah Lingkungan dan Pengelolaan Tanaman Terpadu Padi eksisting.Pertama, PTT Padi  Ramah Lingkungan (PTTRL))  yang terdiri atas komponen (a) Benih var.  Rojolele dengan “seed treatment” Reagent 5 EC, (b) Umur bibit 20 hari (c) sistem tanam jajar legowo tipe 2 : 1, Jml bibit 2 tanaman/rumpun (d) Pemupukan berimbang dengan dua aras yaitu  takaran N  (sumber ZA), pemberian berdasarkan Bagan Warna Daun (BWD), +  unsur P dan K berdasarkan perangkat PUTS  +  500 kg Petroganik//ha(PTTPetro), N berdasarkan BWD (sumber ZA), pupuk P dan K berdasarkan PUTS + 2 ton Pukan/ha (PTTPukan). Kedua, PTT eksisting yang dominan (PTTExist) terdiri atas (a) Varietas Rojolele,  umur bibit 25 hari, (b), Cara tanam sistem tegel 25 cm x 25 cm (c), Takaran pupuk  yang dominan di tingkat petani, (d), Pengendalian OPT berdasarkan kalender). Data yang dikumpulkan meliputi tinggi tanaman, jumlah anakan, komponen hasil dan hasil padi. Pengamatan emisi (gas CH4dan gas N2O) dengan menggunakan “sungkup”  pada umur 42, 63, 105 dan 112 Hari setelah tanam (Hst). Pengukuran emisi rumah kaca dilaksanakan di Kantor Balingtan Pati.Hasil penelitan menunjukkan bahwa  (1) Penerapan (PTTPetro) memberikan hasil yang tertinggi (5,219 t GKP/ha) meningkatkan hasil sebesar 30 % diatas kontrol ((3.620 t GKP/ha), dan menurunkan emisi gas CH4 sebesar 13,6%\ dibawah kontrol (emisi:76,05kgCH4/ha/musim). Kata kunci: 1, PTT,2, Padi, 3. emisi gas metana (CH4), 4. sawah irigasiABSTRACTRice cultivation to produce of highest methan gases i.e 2.57  Tg per years.  Methan gas emission be predicted by 58 % from rice sawah culture from Java. The implementation of rice integrated plant management (IPM) to increase of productivuty and able to supress of greenhouse emission (GHGs).  The Goals of this experiment was to find out of technology packages of potensial local rice IPM specific central java and  feasibility rice farming. On farm research was conducted in central development of Rojolele variety i.e Gempol, Karanganom subdistrict, Klaten district since March-September 2016 about 1.60 hectares. Randomized Block Designs used with  eight replicated (eight farmers, each farmers about 0,20 ha). Two kinds of Rice IPM,  First, Rice IPM enviromental friendly (IPMR-EF) with eight farmers as replicated. Technology componen of (IPMR-EF) consisted of (a) the use of Rojolele var with “seed treatment” Reagent 5 SC, (b) Seedling age  20 days, (c) jajar legowo transplanting system, 2 : 1 types, Seedling numbers 1 – 2 plant/hills (d) Balance fertilizers consisted of two levels i,e (d1)  N dosis(ZA sources) based on Leaf Colour Charge (BWD), + Phosphor and Photassium based on  PUTS Kit,  +  500 kg Petroganic/ha, (IPMPetro) Dosage of (N/ZA sources), + Phosphor and Potassium based on PUTS Kit, and  2 ton farmyard manure/ha (e) Pest regulation (Regulation of rice sowing by hayati agent such ash (Metarhizium anisopliae 5 cc/l, Beauveria basisiana). The usage of pesticides will be applied if insect population over threshould. Second (IPMR-FYM,) the same treatment first but source of organic fertilizer as  Farmyard Manure 2 ton/ha (IPMFYM). Third treatment (IPMR-exs) were rice farmer management dominant, consisted of (a) Rojolele variety, seedling age 25 days (b), “Tegel transplanting system” (c), farmers dominant fertilizer dosages (d), pestidicide calender system.Parameters were collected such as plant growth, yield component and yield. Observers of greenhouse emission such as CH4 and N2O used “Box Chamber” at 42;   63;  105;  and 112 days after transplanting.  Emisson methan and N2O were conducted in in Indonesian Agricultural Environment Research Institute (IAERI)  in Pati. Input-output” data farming system among (IPMR-EFTg and IPMR-Effym) compared to control (IPMR-exs). Technical data were analized by variant analysis continued by DMRT05. Visibility of introduction IPM technology (IPMR-RL) was analized with use B/Cratio.   Research resulted that (1) IPMR-FYM  (Use Rojolele cv, seedling age  20 days, plant system type 2 : 1 “jajar legowo”  with fertilizers dosaage based on PUTS Kit  (N soures ZA + Phonska) + 2 t FYM/ha, application of nabati pesticide and intermittent irrigation able to give highest yield (5,219 t Gkg/ha) to increase 30 % over control (3.620 t Gkg/ha), but to decrease methan gas emission 13,6 % under control/IPMExist (gas CH4 emission : 76,05 kg CH4/ha/seasons).umur 42, 63, 105 dan 112 Hari setelah tanam (Hst)Keywords: IPM, , Rice, Glasshouse Emission, irrigated land

The study was conducted from April 2019 to Maret 2020 in a community forest in the village of Karang Kembang, Tunjungan district, Blora. The objective of the research was to characterize the morphology of Durian Monthok from Blora. The research directly developed the morphological characters of such durian from Blora. Description format durian plants have been arranged in the form of standard blanks. The results showed that Durian Monthok had a greyed-orange flower (163C), moderate yellow (161A) skin, weight rate of 1, 877-2,172 kg. It was also determined that Durian Monthok had an oblong fruit shape, light greenish-yellow (8C) flesh, fluffier sweet taste, and had a fragrant aroma.

<p>Rice (<em>Oryza sativa </em>L.) is the most important and strategic food crop in Indonesia, but low productivity in tidal paddy fields is a serious problem that must be overcome. The application of ameliorant would be worthy to increase the growth and yield of rice in tidal paddy fields. The study aimed to investigate the effect of ameliorant application on growth and yield of rice varieties in tidal paddy fields. The study was arranged in a split plot design with five replications. Rice varieties tested were Inpari 34, Dendang, Inpara 9, Inpari 35, and Ciherang as the main plot, and ameliorant types studied were humic acid, gypsum, zeolite, and organic fertilizer as the subplot. The results showed that the use of different rice varieties and amelioran types significantly increased the growth and yield of rice. Inpara 9 produced 7.6 t.ha-1 dry milled grain (DMG) or increased by 33.3% compared to Ciherang variety. Humic acid application at 25 kg ha-1 increased grain yield by 21.3% higher than that without ameliorant treatment. The best treatment to increase the growth and yield of rice in tidal paddy field was a combination of humic acid 25 kg.ha-1 and Inpari 34 which produced the DMG of 8.6 t ha-1 or 41% higher compared to Ciherang without ameliorant.</p>

The problem of rice farming in Indonesia is the increasing extent of nutrient-poor land due to the lack of addition of organic matter and continuously inundated irrigated rice fields, causing the production of greenhouse gas emissions, such as methane gas (CH4), to increase. The study aims to determine the impact of organic fertilizers and rice varieties on rice yield, methane emissions, and the feasibility of farming in nutrient-poor rice fields. The study used a randomized block design in factorial with four replicates. The first factor is the type of organic fertilizers (compost of rice straw and goat manure), and the second factor is the variety of rice (Ciherang, Inpari 20, and Inpari 30). The results showed that the productivity of Inpari 20 (8.02 t·ha−1) was significantly higher than that of Inpari 30 (6.10 t·ha−1) and Ciherang (6.91 t·ha−1). The highest yields of Harvest Dry Grain (HDG) to Milled Dry Grain (MDG) were the Inpari 20 (88.23%), Inpari 30 (86.94%), and Ciherang (85.04%). Methane (CH4) emissions were highest in the Ciherang variety (56.4 kg h−1 season−1), followed by Inpari 30 (40.8 kg h−1 season−1), and lowest in Inpari 20 (22.3 kg h−1 season−1). Compared to Inpari 30 and Ciherang varieties, the Inpari 20 variety with rice straw compost has broad development viability in nutrient-poor paddy fields (highest R/C ratio and break-even point). More research on organic rice is needed to determine the productivity and emissions (methane, nitrite, carbon dioxide).