cover
Article Per Year (5 Year)
All
Home Page
OAI Link
Editorial Team
Contact
Reviewer
Google Scholar
Contact Name
Laelatul Qodaryani
Contact Email
jtibbsdlp@gmail.com
Phone
+6285641147373
Journal Mail Official
jtibbsdlp@gmail.com
Editorial Address
-
Location
Kota bogor,
Jawa barat
INDONESIA
Jurnal Tanah dan Iklim
Published by Balai Besar Penelitian dan Pengembangan Sumberdaya lahan Pertanian
ISSN : 14107244     EISSN : 27227723     DOI : http://dx.doi.org/10.21082/jti.v44n1.2020.19-29
Core Subject : Agriculture,
Agriculture, Biological Sciences & Forestry
Jurnal TANAH dan IKLIM memuat hasil-hasil penelitian bidang tanah dan iklim dari para peneliti baik dari dalam maupun dari luar Balai Besar Litbang Sumberdaya Lahan Pertanian. Jurnal ini juga dapat memuat informasi singkat yang berisi tulisan mengenai teknik dan peralatan baru ataupun hasil sementara penelitian tanah dan iklim.
Arjuna Subject : Ilmu Pertanian dan Biologi (Semua) - Ilmu Pertanian dan Biologi (Lain-Lain)
Articles 257 Documents
 17   18   19   20   21 
Peningkatan Produktivitas Lahan Sawah Tadah Hujan dengan Pemupukan Hara N, P, K dan Penggunaan Padi Varietas Unggul Antonius Kasno; Tia Rostaman; Diah Setyorini
Jurnal Tanah dan Iklim (Indonesian Soil and Climate Journal) Vol 40, No 2 (2016)
Publisher : Balai Besar Penelitian dan Pengembangan Sumberdaya Lahan Pertanian

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21082/jti.v40n2.2016.147-157

Abstract

Abstrak. Potensi lahan sawah tadah hujan cukup luas dan produktivitasnya dapat ditingkatkan, antara lain dengan pemupukan yang rasional sesuai status hara tanah dan kebutuhan tanaman akan hara, serta penggunaan varietas unggul. Penelitian bertujuan mempelajari peningkatan produktivitas lahan sawah dengan pemupukan hara N, P, dan K serta penggunaan varietas unggul. Penelitian dilakukan di tiga lokasi, yaitu di Andong, Boyolali; Jakenan, Pati dan Cibeber, Cianjur. Penelitian dilakukan dengan rancangan acak kelompok dengan pola perlakuan faktorial tidak lengkap, 12 perlakuan dan 3 ulangan. Perlakuan merupakan kombinasi pemupukan hara N, P, dan K, ditambah perlakuan kontrol, dan perlakuan varietas yang umum digunakan petani setempat. Hasil penelitian menunjukkan bahwa faktor pembatas pertumbuhan tanaman padi lahan sawah tadah hujan di Jakenan, Pati antara lain kadar C-organik, hara N, P, dan K, Andong, Boyolali adalah C-organik, hara N dan P, dan Cibeber, Cianjur adalah hara N dan K. Dosis pemupukan N, P, dan K yang rasional untuk lahan sawah tadah hujan di Andong, Boyolali 300 kg urea, 75 kg KCl dan 50 kg SP-36/ha, Jakenan, Pati 200 kg urea, 200 kg KCl, dan 50 kg SP-36, Cibeber, Cianjur 250 kg urea, 50 kg SP-36 dan 50 kg KCl/ha. Penggunaan varietas unggul belum mampu meningkatkan hasil padi secara nyata untuk lahan sawah tadah hujan dibandingkan dengan varietas padi yang umum digunakan petani. Kata kunci: sawah tadah hujan; pemupukan; varietas unggul; produktivitas; Abstract. The potential of rainfed areas are quite large and productivity can be improved, among other things with a rational fertilization corresponding nutrient status of soil and crop needs for nutrients, and the use of high yielding varieties. The research aims to study the increase in the productivity of paddy fields with fertilization of N, P, K, and the use of high yielding varieties. The study was conducted in three locations, namely in Andong, Boyolali; Jakenan, Pati and Cibeber, Cianjur. Research using randomized complete block design with factorial pattern of incomplete treatment, 12 treatments and 3 replications. The treatment is a combination of fertilizer N, P, and K, plus a control treatment, and the treatments that are commonly used varieties of local farmers. The results showed that the limiting factors the growth of the rice plant rainfed areas in Jakenan, Pati, were organic-C, N, P, and K, Andong, Boyolali is organic-C, N and P, and Cibeber, Cianjur is N and K. The fertilization rational of N, P, and K for rainfed areas in Andong, Boyolali 300 kg urea, 75 kg and 50 kg KCl SP-36/ha, Jakenan, Pati 200 kg urea, 200 kg KCl and 50 kg of SP-36, Cibeber, Cianjur 250 kg urea, 50 kg of SP-36 and 50 kg KCl/ha. The use of high yielding varieties of rice have not been able to significantly increase the yield for rainfed areas compared with rice varieties that are commonly used by farmers. Key word: rainfed; fertilizer; improved varieties; productivity
Soil Destruction Level at Upstream of Cikapundung Sub Watershed on The North of Bandung Area N. SUTRISNA; SANTUN R.P. SITORUS; KASDI SUBAGYONO
Jurnal Tanah dan Iklim (Indonesian Soil and Climate Journal) No 32 (2010): Desember 2010
Publisher : Balai Besar Penelitian dan Pengembangan Sumberdaya Lahan Pertanian

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21082/jti.v0n32.2010.%p

Abstract

The upstream of Cikapundung sub watershed is the high land which is located on the North of Bandung Area. The soil is fertile, therefore the land is used as farming. The agriculture land is slope and the farmers have not applied the technology of conservation yet, as the result the soil susceptible to erosion. Consequently it decreases the productivity of land. The objectives of study were: (1) to evaluate erosion (value and risk erosion) at the use of land existing and (2) to investigate soil destruction level by erosion and its impact to productivity of land at upstream of Cikapundung sub watershed. The research used survey method. The data consisted of secondary data and primary data. The secondary data was collected through desk study, whereas primary data was collected through interviewed farmers, the soil observation, and soil sample analyses that is included the contain of sand, dust, and clay; C-organic; and nutrient content (N, P, K, and Ca) at Laboratory. The data analysis was done according to descriptive. The result showed that the most soil erosion was at the type of vegetable land use which use intensively at slope 25-40%.Value erosion roundabout 22.57-597.76 ton ha-1 year-1 or 0.33-8.79 cm. Level of destruction soil by erosion at upstream of Cikapundung sub watershed majority was medium critic (the upper soil was loss >75%) and spread at some units land. During five years, the impact of erosion decreased C-organic 60.05%, N 44.7%, P 52.3%, K 24.7%, and Ca 27.2%. Productivity Potato decrease 60%, whereas cabbage 40%.
Karakteristik Tanah Sawah dari Endapan Lakustrin di Sulawesi Hikmatullah Hikmatullah; Suparto Suparto
Jurnal Tanah dan Iklim (Indonesian Soil and Climate Journal) Vol 38, No 1 (2014)
Publisher : Balai Besar Penelitian dan Pengembangan Sumberdaya Lahan Pertanian

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21082/jti.v38n1.2014.1-14

Abstract

Abstrak. Dataran lakustrin di Sulawesi umumnya digunakan untuk lahan sawah, akan tetapi penelitian karakteristik mineral dan sifat-sifat fisik-kimianya masih sedikit dilakukan. Penelitian ini bertujuan untuk mempelajari komposisi mineralogi dan sifat-sifat kimia tanah sawah dari endapan lakustrin yang berasal dari beberapa sumber bahan induk. Sebanyak delapan profil tanah sawah dari endapan lakustrin dari daerah-daerah Tondano, Kotamobagu dan Dumoga (Sulawesi Utara), Limboto dan Paguyaman (Gorontalo), Napudan Bariri (Sulawesi Tengah), dan Sengkang (Sulawesi Selatan) telah diteliti sifat-sifat morfologinya di lapangan dan sebanyak 36 contoh tanah telah dianalisis komposisi mineral fraksi pasir dan liat, serta sifat-sifat fisik-kimianya di laboratorium. Hasil penelitian menunjukkan bahwa komposisi mineral dan sifat-sifat fisik kimia tanah sawah tersebut cukup bervariasi yang dipengaruhi oleh sumber bahan induknya. Tanah sawah Tondano seluruh lapisannya dipengaruhi bahan volkan intermedier, yang mengandung gelas volkan tinggi (54-80%), asosiasi mineral plagioklas-piroksen dan haloisit hidrat-alofan. Tekstur lempung berdebu, kandungan C organik dan KTK tanah tinggi (31-39 cmolc kg-1), dan bereaksi masam (pH 4,5-4,9). Tanah sawah Kotamobagu dan Dumoga juga dipengaruhi bahan volkan intermedier, dengan sedikit gelas volkan (2-5%), asosiasi plagioklas-amfibol-piroksen dan semektit-kaolinit. Meskipun mengandung semektit, KTK tanahnya rendah-sedang (11-23 cmolc kg-1). Berbeda dengan tanah sawah di atas, tanah sawah Limboto, Paguyaman dan Sengkang dipengaruhi oleh rombakan bahan volkan masam, sedimen dan metamorfik, yang didominasi oleh mineral kuarsa, asosiasi feldspar-plagioklas-amfibol, dan mineral liat semektit. Dominasi mineral semektit menyebabkan kandungan basa-basa dan KTK tanah tinggi (25-55 cmolc kg-1) dan bereaksi agak masam-alkalis (pH 5,7-8,0). Tanah sawah Napu dan Bariri didominasi oleh mineral kuarsa dan feldspar, serta asosiasi kaolinit-vermikulit, yang diduga berasal dari rombakan batuan granit-biotit dan sedimen. Hal ini ditandai dengan kandungan K2O total (eks. HCl 25%) sangat tinggi (187-752 mg 100g-1) sebagai hasil dari pelapukan biotit dan feldspar. Tekstur lempung berpasir, kandungan basa-basa dan KTK tanah rendah (2-10 cmolc kg-1) dan breaksi masam (pH 5,2-5,6). Pengaruh bahan induk, terutama bahan volkan telah memberikan dampak positif terhadap sifat-sifat tanah sawah terutama cadangan sumber hara tanah yang cukup tinggi, sehingga kesuburan tanah sawah dapat terpelihara dalam jangka panjang. Abstract. Lacustrine plain in Sulawesi is generally used for paddy fields. However, study on their mineralogical and chemical properties is limited. The aim of the study was to characterize the mineralogical composition and chemical properties of paddy soils derived from lacustrine deposits with different sources of parent materials. Eight paddy soil profiles developed from lacustrine deposits in Tondano, Kotamobagu and Dumoga (North Sulawesi), Limboto and Paguyaman (Gorontalo), Napu and Bariri (Central Sulawesi), and Sengkang (South Sulawesi) have been studied their morphological characteristics in the field and 36 soil samples were collected and analysed for mineralagical composition and physico-chemical properties in the laboratory. Results showed that mineral composition and chemical properties of the paddy soils were varied, depending on the source of parent materials. All layers of paddy soil from Tondano were influenced by intermediary volcanic materials containing high volcanic glass (54-80%), association of plagioclase-pyroxene and hydrated halloysite-allophane. Soil texture was silt loam, high organic C and soil CEC (31-39 cmolc kg-1), and acid reaction (pH 4.5-4.9). Paddy soils from Kotamobagu and Dumoga were also influenced by intermediary volcanic material with little differences in mineralogical compositions, contained few volcanic glass (2-5%), association of plagioclase-amphibole-pyroxene and smectite-kaolinite. Although smectite was present, the soil CEC was low to moderate (11-23 cmolc kg-1). Paddy soils from Limboto, Paguyaman and Sengkang differed from those aforementioned soils. In the former, soils were influenced by weathered acid volcanic materials,sedimentary and metamorphic rocks, where minerlogical compositions were dominated by quartz, association of feldspar-plagioclase, and smectite clay mineral. The dominance of smectite promoted high content of base cations, high soil CEC (25-55 cmolc kg-1) and slightly acid to alkaline reaction (pH 5.7-8.0). Paddy soils from Napu and Bariri weredominated by quartz and feldspar, and association of vermiculite-kaolinite, which probably derived from weathered biotite-granite and sedimentary rocks.. These were indicated by very high K2O (HCl 25% extraction) (187-752 mg 100g-1) deriving from the weathering of biotite and feldspar. Soil texture was sandy loam, low base cations and CEC (2-10 cmolc kg-1), and acid reaction (pH 5.2-5.6). The influence of parent materials, especially volcanic materials have given a positive impact in providing high nutrient reserve for paddy soils to maintain a long term of soil fertility.
Increasing of N-uptake by Inoculation of Diazotroph Endophytic Bacteria in Vermiculite Media DWI N. SUSILOWATI; RATIH SARASWATI; R.D HASTUTI; E. YUNIARTI
Jurnal Tanah dan Iklim (Indonesian Soil and Climate Journal) No 26 (2007): Desember 2007
Publisher : Balai Besar Penelitian dan Pengembangan Sumberdaya Lahan Pertanian

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21082/jti.v0n26.2007.%p

Abstract

Intensive selection of selected 15 isolates on N2-fixing activities and auxin production to diazotroph endophytic bacteria showed that five isolates were superior, that is KACP12 (0.2569 μmol hour-1 culture-1), KACP13 (0.3026 μmol hour-1 culture-1), KACP21 (0.4592 μmol hour-1 culture-1), KACP32 (0.3131 μmol hour-1 culture-1), and KAMG2 (0.4843 μmol hour-1 culture-1). Inoculated five superior isolates into soybean seeds in vermiculite media showed that soybean plant inoculated by KAMG2 has the highest nitrogenase specific activity compared to others and control, that is 2,54 ± 1,2 μmol hour-1 plant-1. However inoculation with KACM and KACP32 showed higher N-uptake of soybean plant. Although this research has conducted within theearly stage of soybean plant growth, it is obvious that inoculated diazotroph endophytic bacteria in vermiculite media seem to be a good method to introduce selected strain envisaging growth promoting and nitrogen fixation.
Optimasi CNN dengan GA Pada Prediksi Awal Musim Hujan Berdasarkan Data GCM: Kabupaten Pacitan1) (CNN Optimization Using GA for Rainy Season Onset Prediction Based on GCM Output:Pacitan District) Fildza Novadiwanti; Agus Buono; Akhmad Faqih
Jurnal Tanah dan Iklim (Indonesian Soil and Climate Journal) Vol 41, No 1 (2017)
Publisher : Balai Besar Penelitian dan Pengembangan Sumberdaya Lahan Pertanian

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21082/jti.v41n1.2017.69-77

Abstract

Abstrak: Di Indonesia, pertanian menjadi sektor penting dalam pembangunan nasional dan pembangunan ekonomi. Awal musim hujan merupakan salah satu variabel iklim yang dapat memengaruhi produksi pertanian. Perubahan awal musim hujan dapat berdampak pada terjadinya gagal panen. Penelitian ini mengembangkan model untuk memprediksi awal musim hujan menggunakan cascade neural network yang dioptimasi menggunakan genetic algorithm berdasarkan data global circulation model pada Kabupaten Pacitan. Data observasi menggunakan data awal musim hujan dari 3 stasiun cuaca, yaitu Arjosari, Kebon Agung, dan Pringkuku. Data prediktor menggunakan data global circulation model antara tahun 1983 – 2011 dari 3 model, yaitu CMC1-CanCM3, CMC1-CanCM4, dan NCEP-CSFv2. Optimasi cascade neural network dengan genetic algorithm dilakukan dengan mengoptimasi jumlah hidden neuron dan menghasilkan peningkatan nilai koefisien korelasi (r). Penelitian ini menghasilkan model terbaik dari setiap stasiun cuaca dengan parameter yang berbeda. Nilai r stasiun Arjosari adalah 0.89. Nilai r stasiun Kebon Agung adalah 0.86. Nilai r stasiun Pringkuku adalah 0.87. Abstract. In Indonesia, agriculture becomes an important sector for national development and national economy. The onset of the rainy season is one of the rainfall variables that affect agricultural production. The changing of the onset of rainy season can impact on crop failure. This research aims to develop a model for predicting the onset of rainy season using optimized cascade neural network with genetic algorithm based on global circulation model in Pacitan district. Observational data used is the onset of rainy season of 3 weather stations in Pacitan: Arjosari, Kebon Agung, and Pringkuku. Predictor data used is global circulation model output data between 1983 – 2011 from 3 models: CMC1-CanCM3, CMC1-CanCM4, and NCEP-CSFv2. Optimization of cascade neural network with genetic algorithm has been done by optimizing the amount of hidden neuron and obtained an increase value of correlation coefficient (r). This research obtained the best model from each weather stations with different parameters. R value of Arjosari weather station is 0.89. R value of Kebon Agung weather station is 0.86. R value of Pringkuku weather station is 0.87.
Cadmium Adsorption Capacity on Inceptisols Brebes and its Uptake by Shallot as Plant Indicator LADY R. WIDOWATI; L.I NURHAYATI; . CHARLENA; S. SRI DWININGSIH; J. SRI ADININGSIH
Jurnal Tanah dan Iklim (Indonesian Soil and Climate Journal) No 21 (2003): Desember 2003
Publisher : Balai Besar Penelitian dan Pengembangan Sumberdaya Lahan Pertanian

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21082/jti.v0n21.2003.%p

Abstract

A research had been done in the laboratory and greenhouse of the Indonesian Center for Soil and Agroclimate Research and Developmant to study cadmium adsorption capacity, availability, and its uptake by shallot as plant indicator in order to antisipate Cd pollution in soil and plant in the future. The steps of the research were adsorption study in the laboratoryand followed by greenhouse trial. Cadmium adsorption study was using the rate of 0; 10; 30; 40; 50; 60; 70; 80; 90; and 100 ppm. The trial on response and plant uptake on cadmium used 2 kg soil pot-1 then planted with shallot var. Bima for 2 months. The experiment utilized completely randomized design with six treatments and three replicates. The rates of Cd were 0; 25; 50; 100; 200; and 400 ppm Cd (Cd(NO3)2). The results showed that Inceptisols Brebes adsorption, maximum adsorption, andbuffering capacity are 14.78 ml μg-1; 879 μg g-1 and 12,987 ml μg-1, respectively. The cadmium availability in the soil could be calculated by using the equation: Cdexchangeable = 0.0532(Cdapplied) – 1.6757, r2 = 0.9686 (after treatment); Cdexchangeable = 0.0671(Cdapplied) + 0.924, r2 = 0.9903 (after harvest). Application of 50 ppm Cd reduced shallot production up to 31% significant with total uptake of 4.57 ppm Cd. The Cd uptake increased significantly for treatment 25 ppm, Cd in shallot tuber(2.36 mg Cd per kg dry weight), and at 200 ppm Cd in leaves (7.16 mg kg-1). The cadmium content in tuber at treatment 2 ppm Cd (2.36 ppm Cd) exceeds critical value/permissible limit of vegetable for consumption.
Penentuan Waktu Tanam dan Kebutuhan Air Tanaman Padi, Jagung, Kedelai dan Bawang Merah di Provinsi Jawa Barat dan Nusa Tenggara Timur Kharmila S. Hariyanti; Tania June; Yonni Koesmaryono; Rahmat Hidayat; Aris Pramudia
Jurnal Tanah dan Iklim (Indonesian Soil and Climate Journal) Vol 43, No 1 (2019)
Publisher : Balai Besar Penelitian dan Pengembangan Sumberdaya Lahan Pertanian

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21082/jti.v43n1.2019.83-92

Abstract

Abstrak. Padi, jagung, kedelai dan bawang merah merupakan komoditas pangan unggulan di Indonesia. Jagung dan bawang merah umumnya ditanam sesudah padi atau kedelai di lahan sawah tadah hujan sehingga rentan terhadap kekeringan. Oleh sebab itu informasi iklim khususnya curah hujan dan suhu sangat penting dalam menentukan waktu tanam dan kebutuhan air yang tepat bagi tananam. Tujuan penelitian adalah menentukan waktu tanam dan kebutuhan air tanaman padi, jagung, kedelai, dan bawang merah berdasarkan analisis neraca air tanaman, serta menyusun peta waktu tanam di dua provinsi sentra produksi pangan Indonesia yaitu Jawa Barat dan Nusa Tenggara Timur agar risiko penurunan produksi karena kekeringan dapat diturunkan. Berdasarkan hasil analisis neraca air tanaman di 16 wilayah, tanaman yang ditanam pada tanah bertekstur debu memiliki waktu tanam rata-rata 13 dasarian, relatif lebih panjang dari tanah bertekstur lempung, liat dan pasir dengan waktu tanam berturut-turut: 10, 9 dan 5 dasarian. Wilayah dengan tekstur tanah pasir memiliki periode waktu tanam relatif lebih pendek karena tanah ini tidak dapat menahan air lebih lama di dalam tanah yang menyebabkan cekaman air lebih cepat terjadi. Tanaman padi lebih rentan terhadap kekeringan jika dibandingkan dengan tiga tanaman lainnya sehingga risiko kehilangan hasil juga relatif lebih tinggi. Kebutuhkan irigasi tanaman padi pada periode tanam Mei-Agustus dapat mencapai 4,9 mm hari-1 di provinsi Nusa Tenggara Timur. Karakteristik curah hujan Jawa Barat memiliki bulan basah > 7 bulan sehingga memungkinkan waktu tanam lebih lama yaitu (pada tanah bertekstur) debu: 10-15 dasarian, lempung: 8-14 dasarian, liat: 8-13 dasarian dan pasir: 4-7 dasarian. Nusa Tenggara Timur dengan kondisi iklim lebih kering (bulan kering > 7 bulan) umumnya tidak direkomendasikan untuk menanam padi gogo dan disarankan untuk menanam jagung untuk menekan risiko kehilangan hasil.Abstract. Rice, maize, soybean and shallot are among the most important food crops in Indonesia. Maize and shallots are generally planted after rice or soybeans on rainfed agriculture and hence they are prone to drought. Therefore, climate information, especially rainfall and temperature is very important in determining the planting time and water Requirements for these crops. The research objective was to determine the planting time and water requirements of rice, maize, soybeans, and shallots based on crop water balance analysis, as well as to arrange cropping map in West Java and East Nusa Tenggara provinces so that the risks of decreased yield due to drought could be minimized. Based on the results of water balance analysis at 16 areas, the average planting periode on soil with silt texture was 13 decades (130 days), relatively longer than those of loam, clay and sand texture soils, with consecutive planting periods of: 10, 9 and 5 decades. Areas with sand soil had a relatively shorter planting period because of low water holding capacity which causes water stress occurs more quickly. Rice plants are more susceptible to drought compared to the other three crops. Irrigation water requirements for rice in May to August could reach 4.9 mm day-1 in the East Nusa Tenggara province. Based on the rainfall characteristics of West Java, the recommendations for cropping periods are 10-15 decades for silt, 8-14 decades for loam, 8-13 decades for clay and 4-7 decades for sand textured soil. East Nusa Tenggara with a drier climatic conditions is not recommended for planting rice on upland and is recommended for maize with a lower risk of low yield.
Cover JTI Vol.40(2) Desember 2016 Wahid Noegroho
Jurnal Tanah dan Iklim (Indonesian Soil and Climate Journal) Vol 40, No 2 (2016)
Publisher : Balai Besar Penelitian dan Pengembangan Sumberdaya Lahan Pertanian

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21082/jti.v40n2.2016.%p

Abstract

Berisi 8 Paper
Productivity Improvement of Sandy Soil Intensively Lowland Rice by Row Inserted Planting System SUBOWO G.; . YUSTISIA; . FIBRIANTI
Jurnal Tanah dan Iklim (Indonesian Soil and Climate Journal) No 33 (2011): Juli 2011
Publisher : Balai Besar Penelitian dan Pengembangan Sumberdaya Lahan Pertanian

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21082/jti.v0n33.2011.%p

Abstract

The research to increase rice planting index by row inserted planting system was conducted in sandy-loam soil of intensively lowland rice in Berbah, Yogyakarta. Yield at the initial/first rice planting was determined by N, P, and K fertilizer application, whereas inserted/second plant was determined by percentage of shadding from initial plant. The second planting (inserted at 20 days after first planting) yielded only ±50% compared to that of the first planting. Of three rice varieties studied, IR-64 had the lowest yield at the first planting, but by inserting this variety at the second planting it produced higher yield than those of Ciherang and Cimelati. The shorter plant height varieties, have a high potential to be developed into the inserted planting system. Improvement of plant distance to reduce shadding less than 50% is important to support the second plant growth. The selection of rice varieties for the first  planting and the second planting should consider the potential competition of plant from sunlight and soil nutrients. The results suggest that planting time of the second planting (insertion) should consider the availability of water and shadding potential for plant at the second planting.
Rice Yield and Nutrient Removal through Harvest in Newly Developed Lowland Rice Field in Bulungan District, North Kalimantan Sukristiyonubowo Sukristiyonubowo; Ricky Christo Ajiputro; Sugeng Widodo
Jurnal Tanah dan Iklim (Indonesian Soil and Climate Journal) Vol 39, No 2 (2015)
Publisher : Balai Besar Penelitian dan Pengembangan Sumberdaya Lahan Pertanian

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21082/jti.v39n2.2015.121-126

Abstract

Abstract. Nutrient removal through rice harvest of Ciherang variety planted in newly developed lowland rice field was studied in Bulungan District, in 2013. The aims of this research were to evaluate the amount of nutrients taken out by rice harvest and to properly manage its fertility to sustain high rice yield. Five treatments were tested, T0: Farmers practices, T1: Package A (NPK at recommendation r ate + Dolomite), T2: Package B (NPK at recommendation rate + dolomite + Compost + Smart), T3: Package C (¾ NPK at recommendation rate + Compost + Dolomite + Smart), and T4: Package D (NPK at recom-mendation rate + Compost + Dolomite + Smart). They were arranged in a Randomized Complete Block Design and replicated three times. The results showed that the highest rice biomass yield (rice grains, rice straw and rice residues) was from the package D, whereas, the highest concentrations of N, P, and K were found in rice grain of Package B. The highest nitrogen and phosphorous removals were from rice grains and for potassium was from rice straw. Depending on the treatments, total nutrient removal through rice grains and rice straw varied: from 30.96 ± 2.93 to 67.82 ± 8.93 kg of N; 12.83 ± 2.15 to 27.53 ± 14.11 kg of P; and 55.10 ± 2.92 to 101.84 ± 6.02 kg of K ha-1 season-1. To avoid nutrient mining and to maintain the soil fertility, about 67 to 150 kg urea, 65 to 140 kg SP-36 and 105 to 196 kg KCl ha-1 season-1 should be applied to the soil. Abstrak. Unsur hara yang terangkut oleh hasil panen padi varitas Ciherang yang ditanam pada sawah bukaan baru dipelajari dan diteliti di Kabupaten Bulungan, Kalimantan Utara pada tahun 2013. Penelitian bertujuan untuk mengetahui unsur hara yang diangkut oleh hasil panen dan untuk meningkatkan status unsur hara agar diperoleh hasil padi yang tinggi. Lima macam perlakuan dibandingkan, T0: Kebiasaan Petani, T1: Paket A (NPK dengan dosis rekomendasi + Dolomit), T2: Paket B (NPK dengan dosis rekomendasi + dolomit + kompos jerami + Smart), T3: Paket C (¾ dosis rekomendasi NPK + kompos jerami + Dolomit + Smart), dan T4: Paket D (NPK dengan dosis rekomendasi + kompos jerami + Dolomit + Smart). Perlakuan disusun berdasarkan Rancangan Acak Kelompok yang diulang tiga kali. Hasil penelitian menunjukkan bahwa hasil brangkasan padi (gabah, jerami dan sisa tanam padi) tertinggi diperoleh pada perlakuan paket D. Sebaliknya, konsentrasi N, P dan K tertinggi diperoleh pada paket B. Kehilangan N dan P tertinggi adalah yang terangkut bersama hasil gabah dan kehilangan K tertinggi terangkut bersama jerami padi. Tergantung pada perlakuannya, total unsur hara yang diangkut oleh hasil gabah dan jerami padi bervariasi antara 30,96 ± 2,93 sampai 67,82 ± 8,93 kg untuk N; 12,83 ± 2,15 sampai 27,53 ± 14,11 kg untuk P; dan 55,10 ± 2,92 sampai 101,84 ± 6,02 kg untuk K ha-1 musim-1. Untuk menghindari pengurasan unsur hara dan menjaga kesuburan tanah, maka diperlukan penambahan 67 sampai 150 kg urea, 65 sampai 140 kg SP-36 dan 105 sampai 196 kg KCl ha-1 musim-1.

Page 19 of 26 | Total Record : 257

 17   18   19   20   21 

Filter by Year

2000 2022


Reset
Filter By Issues
All Issue Vol 46, No 1 (2022): Akan Terbit Resmi pada Juli 2022 Vol 45, No 2 (2021) Vol 45, No 1 (2021) Vol 45, No 1 (2021): (Akan Terbit Resmi pada Bulan Juli) Vol 44, No 2 (2020) Vol 44, No 1 (2020) Vol 43, No 2 (2019) Vol 43, No 1 (2019) Vol 42, No 2 (2018) Vol 42, No 1 (2018) Vol 41, No 2 (2017) Vol 41, No 1 (2017) Vol 40, No 2 (2016) Vol 40, No 1 (2016) Vol 39, No 2 (2015) Vol 39, No 1 (2015) Vol 38, No 2 (2014) Vol 38, No 1 (2014) Vol 37, No 2 (2013) Vol 37, No 1 (2013) No 34 (2011): Desember 2011 No 33 (2011): Juli 2011 No 32 (2010): Desember 2010 No 31 (2010): Juli 2010 No 30 (2009): Desember 2009 No 29 (2009): Juli 2009 No 28 (2008): Desember 2008 No 27 (2008): Juli 2008 No 26 (2007): Desember 2007 No 25 (2007): Juli 2007 No 24 (2006): Desember 2006 No 23 (2005): Desember 2005 No 22 (2004): Desember 2004 No 21 (2003): Desember 2003 No 20 (2002): Desember 2002 No 19 (2001): Desember 2001 No 18 (2000): Desember 2000 More Issue