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All Journal JSEH (Jurnal Sosial Ekonomi dan Humaniora) Jurnal Sains Teknologi dan Lingkungan (JSTL) Jurnal Biologi Tropis SELAPARANG: Jurnal Pengabdian Masyarakat Berkemajuan CROP AGRO, Scientific Journal of Agronomy AGROMIX Jurnal Pengabdian Magister Pendidikan IPA Jurnal Gema Ngabdi Biofarm : Jurnal Ilmiah Pertanian International Journal Of Science, Technology & Management (IJSTM) Jurnal SIAR ILMUWAN TANI Agroteksos Prisma Sains: Jurnal Pengkajian Ilmu dan Pembelajaran Matematika dan IPA IKIP Mataram Jurnal Pepadu Journal of Soil Quality and Management Jurnal Wicara Desa

I Gusti Made Kusnarta

Jurusan Ilmu Tanah Fakultas Pertanian Universitas Mataram

Author-ID : 1640217

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Penerapan Pertanian Konservasi Pada Skala Usaha Tani di Lahan Tegalan Lombok Tengah Padusug, Padusung; Mahrup, Mahrup; Kusnarta, IGM; Soemeinaboedhy, I Nym; Fahrudin, Fahrudin
JURNAL SOSIAL EKONOMI DAN HUMANIORA Vol 4, No 2 (2018): JURNAL SOSIAL EKONOMI DAN HUMANIORA
Publisher : LPPM Universitas Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jseh.v4i2.6

Teknik pertanian konservasi yang diterapkan di Desa Rembitan Kabupaten Lombok Tengah bertujuan meningkatkan hasil pertanian pada skala usaha tani dengan meminimalisasi biaya pengolahan tetapi memaksimalkan produksi, disamping itu juga sebagai dasar menuju pertanian lestari, berkelanjutan dan memperbaiki mata pencaharian. Ada tiga prinsip dasar pertanian konservasi yakni: 1) Mengolah tanah seringan-ringannnya hingga tidak diolah sama sekali; 2) Menutup permukaan tanah serapat-rapatnya secara terus-menerus sepanjang tahun; 3) Tumpang sari dan rotasi tanaman. Penerapan teknik konservasi merupakan kolaborasi kegiatan budidaya tanaman serta melakukan pembenahan tanah yang rusak/kritis, mengamankan dan memelihara produktivitas tanah agar tercapainya produksi tinggi dalam waktu yang tidak terbatas, dan meningkatkan produktivitas lahan usahatani. Untuk dapat mewujudkan ketiga hal tersebut makan dilakukan beberapa metode penerapan teknik konservasi pada lahan tegalan, yakni: 1) Teknik Konservasi Vegetatif; 2) Teknik Konservasi Mekanik; dan 3) Tanpa Pengolahan Tanah. Ketiga teknik konservasi yang diterapkan pada lahan tegalan ini mampu menjaga permukaan tanah dari erosi dan aliran permukaan (run off) yang tinggi karena adanya mulsa atau vegetasi penutup tanah (cover crop), selain itu teknik konservasi ini juga dapat memelihara bahkan menstabilkan kesuburan pada tanah tegalan seperti yang ada di Desa Rembitan dalam mewujudkan produksi yang maksimal pada skala usaha tani.

Pengujian Daya Hasil Beberapa Varietas Tanaman Jagung pada Kondisi Cekaman Kekeringan yang Diberi Pupuk Kandang di Lahan Kering Lombok Utara IGM Kusnarta; I Wayan Sudika
JURNAL SAINS TEKNOLOGI & LINGKUNGAN Vol. 4 No. 1 (2018): Jurnal Sains Teknologi & Lingkungan
Publisher : LPPM Universitas Mataram

This study aimed to determine the efficacy of several varieties of maize at various rate of manure under drought condition on the dry land of North Lombok. The experiments were designed using split plot design, with manure rates (0, 5, 10, 15 and 20 t.ha-1) as the main plots, and five different maize varieties (P4IS, Gumarang, Lamuru, Sukmaraga and NK212 Hybrid) as subplots. The efficacy of several maize varieties were determined from the weight of dry seeds per plant. Experimental data were analyzed using analysis of variance (ANOVA) at 5 percent significant levels. The mean of each treatments was further tested using the Honestly Significant Difference (HSD) at the same level. The results showed that the highest yield of maize crop was obtained on Lamuru variety at rate of manure of 20 t/ha, ie 85.94 g.plant-1 or 6.14 t.ha-1. The yield of Lamuru variety is similar to that of Sukmaraga, but it is higher compared to P4IS, Gumarang and Hybrid of NK212.The highest yield of maize crop was obtained at rate of manureof 20t.ha-1.

Kajian Biofisik Lahan Untuk Tanaman Porang Sebagai Anasir Konservasi Pada Sistem Agroforestri Di Pulau Lombok IGM Kusnarta; Mahrup Mahrup; Padusung Padusung; I Nym Soemeinaboedhy; Fahrudin Fahrudin
JURNAL SAINS TEKNOLOGI & LINGKUNGAN 2021: Special Issue, Oktober 2021
Publisher : LPPM Universitas Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jstl.v0i0.264

Agricultural land in North Lombok is dominated by a typology of sub-optimal land, physically, chemically and biologically. These properties make it vulnerable to degradation. In such land, agroforestry system is highly recommended, where the porang plant can be included as a component. Nowdays, porang is gaining popularity as a commodity with economic value, and is suitable as an intercropping plant. It is easy to grow on almost all types of soil, and is resistant to shade, making it adaptive to agroforestry systems as non-timber under standing plants in community forest systems. It is believed that this will provide multiple benefits economicly and environmentaly, if it accompanied by the principles of soil and water conservation. The role of porang as a conservative agent has been investigated through a scientific approach as the basis for the domistication of porang in agroforestry systems. The results showed that agroforestry with porang could help improve the stability of the soil aggregates as indicated by the soil aggregate stability index 59 which means rather stable. Soil moisture of wilting point in agroforestry system with porang increased from 3.0% (without porang) to 5.4%. In addition, the soil organic matter content increased to 3.94% (quite high) on the system with porang because the stems and leaves of porang plant are quickly weathered. The ground cover is relatively tight, so it can prevent soil erosion. Porang also play a role in increasing water infiltration due to the presence of porang’s roots and tubers. Thus the domistication of porang fulfills the requirements as an agent of soil conservation, as non-timber plant in the agroforestry system, if it is cultivated according to the principles of soil and water conservation on the typology of sub-optimal land in North Lombok.

Teknik Bedeng Permanen Alternatif Mengurangi Biaya Produksi Usahatani Pada Kondisi Pendemi Covid19 I Nyoman Soemeinaboedhy; Padusung Padusung; I Gusti Made Kusnarta; Mahrup Mahrup; Fahrudin Fahrudin
Jurnal Gema Ngabdi Vol. 3 No. 3 (2021): JURNAL GEMA NGABDI
Publisher : Universitas Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jgn.v3i3.153

Permanent raised-beds can be used in several soil seasons and aim to increase production through the application of sustainable and sustainable agriculture and can improve the welfare of farmers. The three basic principles of conservation agriculture are: i) applying minimal or no tillage ii) applying cover crops continuously throughout the year, and iii) applying crop diversification, either by intercropping, crop rotation, and consecutive cropping (relay cropping), especially between non-legume and legume crops. Service activities provide knowledge to farmers by demonstrating the application of permanent bed farming techniques to reduce farm production costs. This activity is expected to: 1) as an example of the application of permanent bed-based agriculture to prevent soil erosion by planting cover crops and mulch, 2) as an example of a permanent bed technique to maintain soil stability and save costs, 3) as an example of a natural way to restore physical, chemical and biological fertility of dry soil, and 4) as an example of how to increase soil productivity in dry paddy fields typology. To achieve this, several conservation methods will be introduced, as well as several types of vegetable crops and minimum tillage techniques will be introduced.

PENINGKATAN “ESTABLISHMENT RATE” TANAMAN KEDELAI DAN KACANG HIJAU DENGAN APLIKASI BEBERAPA BAHAN PEMBENAH TANAH PADA BEDENG DI LAHAN VERTISOL TADAH HUJAN LOMBOK SELATAN Wayan Wangiyana; I.G. M. Kusnarta; Nihla Farida; M. Zairin
CROP AGRO, Scientific Journal of Agronomy Vol 5 No 1 (2012): Jurnal Crop Agro
Publisher : Department of Agronomy Faculty of Agriculture University of Mataram and Indonesian Society of Agronomy Branch NTB

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ABSTRAK Penelitian bertujuan untuk mengetahui pengaruh aplikasi bahan pembenah tanah pada bedeng di lahan vertisol Lombok Selatan terhadap pertumbuhan (crop establishment) dan hasil biji tanaman kedelai yang ditanam pada MK1 dan tanaman kacang hijau pada MK2 yang ditugal langsung setelah panen kedelai MK1. Percobaan dilaksanakan di lahan sawah tadah hujan milik petani di desa Mujur (Lombok Tengah), dari bulan Juni sampai dengan Nopember 2011, yang ditata menurut Rancangan Acak Kelompok, dengan 3 blok dan 6 perlakuan, yaitu tanpa bahan pembenah tanah (P0), aplikasi bahan pembenah tanah berupa pasir (P1), pupuk kandang (pukan) sapi (P2), Bokashi (P3), pasir + pukan (P4), dan pasir + Bokashi (P5). Analisis data dilakukan dengan ANOVA (Analysis of Variance) menggunakan teknik kontras-ortogonal pada taraf nyata 5%. Hasil penelitian menunjukkan bahwa aplikasi bahan pembenah tanah pada bedeng permanen di lahan vertisol tadah hujan Lombok Selatan secara nyata meningkatkan establishment rate dan hasil biji tanaman kedelai dan kacang hijau. Bahkan hanya dengan aplikasi pasir (P1), yang dicampur dengan lapisan atas tanah pada bedeng, dapat dicapai crop establishment dan hasil biji yang lebih tinggi, dengan rata-rata hasil 1,9 ton/ha biji kedelai dan 1,96 ton/ha biji kacang hijau, jika dibandingkan dengan bedeng tanpa bahan pembenah tanah (P0), dengan rata-rata hasil 1,1 ton/ha biji kedelai dan 0,29 ton/ha biji kacang hijau, padahal secara jangka panjang, pasir tidak akan hilang karena tidak diserap oleh tanaman. Hasil tertinggi diperoleh pada perlakuan aplikasi pasir dan Bokashi (P5), dengan rata-rata hasil 2,5 ton/ha biji kedelai dan 3,43 ton/ha biji kacang hijau. ABSTRACT The study aimed to examine the effect of application of soil amendment materials on raised-beds of Southern Lombok vertisol land on growth (crop establishment) and seed yield of soybean plants grown in MK1 (dry season 1) and MK2 mungbean plants direct dibbled immediately after harvest of the MK1 soybean. The experiment was conducted on a rainfed ricefield owned by a farmer in the Mujur village (Central Lombok), from June to November 2011, which was designed according to the Randomized Complete Block Design, with 3 blocks and 6 treatments, i.e. without soil amendment (P0), the application of sand (P1), cattle manure (P2), Bokashi (P3), sand + manure (P4), and sand + Bokashi (P5). Data were analyzed using ANOVA (Analysis of Variance) based on the contrast-orthogonal technique at 5% level of significance. The results indicated that application of soil amendment materials on the raised-beds, in the southern Lombok rainfed vertisol land, significantly increased the establishment rate and seed yield of soybean in MK1 (dry season 1) and mungbean in MK2 (dry season 2), which was direct dibbled immediately after harvest of the MK1 soybean. Even with the application of sand only, by mixing it with the top soil layer of the raised-beds, better crop establishment and higher seed yields were achieved, with an average of 1.9 ton/ha soybean seeds and 1.96 ton/ha mungbean seeds, compared with an average of only 1.1 ton/ha soybean seeds and 0.29 ton/ha mungbean seeds obtained from the plots without application of amendment materials, while in fact in the long term, the sand will not be disappear because it is not absorbed by plants. The highest yield was obtained from the plot with application of both sand and Bokashi (P5), with an average of 2.5 ton/ha soybean seeds and 3.43 ton/ha mungbean seeds.

APLIKASI BIOCHAR, PUPUK KANDANG DAN CAMPURAN KEDUANYA PADA BEDENG PERMANEN YANG DITANAMI CABAI MERAH (Capsicum annum L.) Raden Unangga Jaya W; IGM Kusnarta; Sukartono 2
CROP AGRO, Scientific Journal of Agronomy Vol 10 No 2 (2017): Jurnal Crop Agro Juli 2017
Publisher : Department of Agronomy Faculty of Agriculture University of Mataram and Indonesian Society of Agronomy Branch NTB

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (302.837 KB)

ABSTRAK Cabai merah (Capsicum annum L.) merupakan tanaman hortikultura yang kaya kandungan gizi bermanfaat, seperti protein, kalori, lemak, karbohidrat, kalsium dan minyak esensial.Penelitian ini bertujuan untuk mengetahui pengaruh dari perlakuan aplikasi biochar, pupuk kandang dan campuran keduanya terhadap pertumbuhan dan hasil tanaman cabai merah yang ditanam pada bedeng permanen.Penelitian dilakukan di Desa Batujai Kecamatan Praya Barat Kabupaten Lombok Tengah pada bulan April sampai dengan September 2015.Rancangan percobaan yang digunakan adalah Rancangan Acak Kelompok (RAK) dengan 7 perlakuan yang diulang sebanyak 3 kali, yaitu K0: Kontrol, B10: Biochar 10 ton/ha, PK10: Pupuk Kandang 10 ton/ha, B5PK10: Campuran biochar 5 ton/ha dan pupuk kandang 10 ton/ha, B10PK5:Campuran biochar 10 ton/ha dan pupuk kandang 5 ton/ha,B15PK5: Campuran biochar 15 ton/ha dan pupuk kandang 5 ton/ha serta B5PK15: Campuran biochar 5 ton/ha dan pupuk kandang 15 ton/ha. Hasil penelitian menunjukkan bahwa perlakuan campuran B5PK15 memberikan pengaruh yang nyata terhadap tinggi tanaman cabai merah (21 HST, 28 HST, dan 35 HST) dan B15PK5 memberikan pengaruh nyata terhadap jumlah dan berat buah pertanaman. Namun umur mulai berbunga dan berbuah, serta berat berangkasan tanaman cabai merah, untuk semua perlakuan tidak menunjukkan perbedaan yang nyata. ABSTRACT Red peppers (Capsicum annum L.) is a horticultural plant rich in beneficial nutrient, such as protein, calories, fat, carbohydrates, calcium and essential oils. This study aims to determine the effect of biochar application, manure and mixing both of biochar and manure on the growth and yield of red pepper grown on permanen raised beds. The study was conducted at Batujai Praya Barat, Central Lombok. Experiment was conducted from April to September 2015. The experimental design used was a randomized block design (RBD) with 7 treatments repeated 3 times, i.e K0: Control, B10: Biochar 10 ton/Ha, PK10: Manure 10 ton/Ha, B5PK10: Mixed biochar 5 ton/Ha and Manure 10 ton/Ha, B10PK5: Mixed biochar 10 ton/Ha and Manure 5 ton/Ha, B15PK5: Mixed biochar 15 ton/Ha and Manure 5 ton/Ha and B5PK15: Mixed biochar 5 ton/Ha and Manure 15 ton/Ha. Result showed that treatment B5PK15 had a significant effect on plant height at 21, 28 and 35 days after planting and B15PK5 significant effect on the number and fruit fresh weight per plant. Flowering and fruiting time, and biomass weight, were not significantly different for all treatments.

Mengembangkan skenario panen porang satu musim melalui manipulasi tanam lebih awal dan perlambatan waktu dorman fase generatif dengan pemberian asam salisilat organik alami di lahan kering Lombok Utara Suparman; Suwardji; Kusnarta; Sukartno

Publisher : Fakultas Pertanian Universitas Yudharta Pasuruan

The research on the scenario of one-season porang harvest through crop manipulation and delaying dormancy time aims to determine the effect of salicylic acid in breaking the dormancy of porang bulbil seeds during seeding and to determine the effect of slowing down the dormant period of the generative phase, so it is expected to be an alternative porang cultivation technology that is profitable for farmers The method used in this study used a completely randomized design experiment on breaking dormancy and a randomized block design in an experiment with slowing down the dormancy time of the generative phase with four salicylic acid concentrations (0%, 0.5%, 1%, and 2%) with eight replicates were planted under rainfed conditions. The results showed that the concentration of salicylic acid (C7H6O3) 2% was the best treatment in increasing tuber weight (52.25%) compared to the control. Application of Salicylic Acid (2%) was significantly able to increase the vegetative growth of porang plants, which was shown by increasing plant height by 50.38% and breaking seed dormancy 14 days faster than the control (without the addition of Salicylic Acid). Furthermore, the delay in dormancy time occurred 1 month later than the control so that it could prolong the vegetative phase. The concentration of 2% salicylic acid is the best treatment, which can be recommended in the development of one-season porang cultivation technology that can increase farmers' profits.

Tingkat Partisipasi Kelompok Tani Dan Pertumbuhan Tanaman Jagung Pada Demplot Di Dusun Jugil Kabupaten Lombok Utara I Wayan Sudika; I Wayan Sutresna; Dwi Ratna Anugrahwati; I Gusti Putu Muliarta Aryana; I Gusti Made Kusnarta
Jurnal SIAR ILMUWAN TANI Vol. 3 No. 1 (2022): Jurnal Siar Ilmuwan Tani
Publisher : Fakultas Pertanian Universitas Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jsit.v3i1.69

Permasalahan petani di dusun Jugil, yaitu kurangnya pengetahuan dan ketrampilan tentang sistem tanam jajar legowo dan penggunaan bahan organik serta saat pemupukan anorganik. Tujuan pengabdian yaitu mengetahui tingkat partisipasi kelompok tani dalam pertemuan dan pembuatan demplot dan mengetahui pertumbuhan tanaman jagung pada dua paket yang diterapkan pada demplot. Metode yang digunakan dalam pengabdian kepada masyarakat ini adalah metode pendidikan orang dewasa (POD) dengan teknik partisipatif. Mula-mula disampaikan beberapa materi kemudian dilanjutkan dengan tanya jawab, diskusi dan dilanjut dengan pembuatan demplot. Pada demlot, diterapkan dua paket, yaitu paket I dan paket II. Paket I, yaitu sistem tanam jajar legowo, penggunaan pupuk organik Petroganik dan pemupukaan anorganik saat tanam dan umur 28 hari. Paket II, sistem tanam tunggal, tanpa pupuk organik dan pemupukan anorganik umur 21 hari dan 35 hari. Tingkat partisipasi dianalisis dengan metode kuantitatif deskriptif. Pertumbuhan tinggi tanaman dan jumlah daun dianalisis dengan uji t pada taraf nyata 5 persen. Penyampaian materi dan diskusi dilakukan pada menjelang penanaman. Hasil pengabdian menunjukkan, bahwa rata-rata tingkat partisipasi kelompoktani dalam pertemuan dan pembuatan demplot tergolong sedang sebesar 53,33 persen. Paket pertama memiliki pertumbuhan vegetatif tinggi tanaman dan jumlah daun per tanaman umur 28 hari lebih baik dibanding paket kedua.

Refleksi kemempanan sistem bedeng permenen dalam mitigasi kelangkaan air di tanah vertisol tadah hujan Lombok Selatan IGM. Kusnarta; Mahrup .; Sukartono .; M. Ma’shum
AGROTEKSOS, Jurnal Ilmiah Ilmu Pertanian Vol 26 No 1 (2016): jurnal agroteksos 1 April 2016
Publisher : Fakultas Pertanian Universitas Mataram

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Abstrak Sistem bedeng permanen (permanent raised beds) telah terbukti sebagai sebuah sistem penyiapan lahan pertanian untuk berbagai komoditas yang sensitif terhadap suasana kelebihan air (water logging). Penelitian lapangan di tanah Vertisol tadah hujan, bertipe iklim D4, yang didisain menurut rancangan Acak Kelompok berblok, mengungkap sebuah luaran (output) yang merefleksikan suatu kemempanan sistem tersebut dalam mitigasi kondisi kelangkaan air pada lahan tadah hujan dengan jenis tanah Vertisol. Tujuan penelitian adalah mengidentifikasi parameter kemampuan sistem bedeng permanen, seperti gejala kapiler, efisiensi pemakaian air (EPA) tanaman, dan hasil tanaman. Hasil penelitian menunjukkan bahwa gejala kapiler pada sistem bedeng secara nominal mampu menurunkan potensial lengas tanah pada zone perakaran tanaman cabai merah, terjadi peningkatan EPA dan peningkatan hasil aktual cabai merah. Aplikasi mulsa jerami pada sistem bedeng permanen (P1) secara konsisten unggul dibandingkan perlakuan-perlakuan pupuk kandang (P2), jerami dan pasir (P3), maupun pupuk kandang dan pasir (P4). Indikasi kemempanan sistem bedeng yang diberikan jerami tercermin pada potensial lengas -0,384kPa, laju kenaikan kapiler 1,26 mm/menit, EPA 1,62 kg/m3 air, dan potensial hasil 5,66 ton/ha. Abstract Permanent raised beds technology has been proven to be an agricultural land preparation system for various commodities that are sensitive to the water logging condition. Field research on rainfed vertisol with the climate type of D4, which is designed according to the Randomized block, revealing an outcome that reflects the mitigation of water scarcity conditions in rainfed vertisol. The purpose of this research is to identify some parameters that indicate the capabilities of permanent raised beds in mitigation of water scarcity, such as capillary rise, crop water use efficiency (WUE), as well as crop yield. The results showed that the capillary raise in the permanent raised beds technology could nominally lowering the soil moisture potential of the root zone of red pepper, increased WUE and increase the actual yield of red pepper. Straw mulch application on permanent raised beds (P1) is consistently superior to application of manure (P2), straw plus sand (P3), and manure plus sand (P4). The effectiveness of permanent raised beds system appear under rice straw application that resulted in soil water potential of -0,384kPa, the rate of capillary rise of 1.26 mm/min, WUE of 1.62 kg/m3, and the potential yield of 5.66 tones/ha.

3. DINAMIKA LENGAS TANAH DAN PERTUMBUHAN AKAR TANAMAN KEDELAI PADA BERBAGAI TINGKAT KEPADATAN TANAH H.M. Tarudi; IGM. Kusnarta; Mahrup Mahrup
AGROTEKSOS, Jurnal Ilmiah Ilmu Pertanian Vol 13 No 4 (2003): Jurnal Agroteksos januari 2003
Publisher : Fakultas Pertanian Universitas Mataram

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ABSTRAK Penelitian rumah kaca untuk mengkaji dinamika lengas tanah dan pertumbuhan akar serta hasil tanaman kedelai, varitas Wilis, pada berbagai tingkat pemadatan tanah telah dilakukan sejak bulan September hingga Desember 2002. Tanah vertisol ditempatkan pada wadah dari kayu dengan ukuran luas permukaan 20 cm x 20 cm, dan tinggi 70 cm sebelum dilakukan pemadatan. Enam perlakuan kompaksi yang diuji meliputi: tanpa ditekan (kontrol), ditekan hingga kepadatan 100; 200, 300, 400 dan 500 kPa. Hasil penelitian menunjukkan bahwa tingkat pemadatan tanah yang berbeda memberikan pengaruh yang nyata pada dinamika lengas di dalam profil tanah. Pemadatan hingga 500 kPa menghasilkan jumlah kandungan lengas jauh di bawah kondisi kapasitas lapang, yaitu mendekati kondisi titik layu. Pertumbuhan akar tanaman kedelai yang dinyatakan dengan panjang akar dan jumlah nodul menunjukkan gejala yang sangat terhambat pada perlakuan pemadatan yang tertinggi (500 kPa). Panjang akar dan jumlah nodul pada pemadatan 500 kPa tersebut, masing-masing adalah 7,5 cm dan 25,3 buah. Panjang akar pada perlakuan pemadatan tertinggi ini terhambat hingga 66% dibandingkan dengan perlakuan kontrol. Hasil tanaman yang dinyatakan oleh jumlah polong berisi menunjukkan perbedaan antar perlakuan pemadatan tanah. Semakin tinggi pemadatan tanah, maka jumlah polong yang dihasilkan semakin rendah. Jumlah polong terendah (51,3 buah/pot) diperoleh pada tingkat pemadatan tanah 500 kPa. Jumlah tersebut 50 % lebih rendah dibandingkan dengan perlakuan kontrol. ABSTRACT Green house experiment was conducted to evaluate the effect of soil compaction on water dynamic in the soil profile from 0 to 60 cm depth, root length, and yield of soybean varietyof wilis from September to December 2002. Vertiosol soils were placed into the box made from wood with the surface area of 20 cm x 20 cm, and 70 cm depth before pressed to some degree of compaction as the treatments. There were six treatments evaluated i.e.: without pressure (control), compaction 200, 300, 400, and 500 kPa. Results of the experiment indicate that degree of compaction has a significant effect on soil water dynamic through the soil profile. The soil compaction up to 500 kPa resulted in the lowest soil moisture, that is close to the wilting point. Root length and number of effective nodule were highly inhibited by the soil strength of 500 kPa up to 66%. The average of root length and number of nodule were 7.5 cm and 25.3, respectively. Crop yield, which was indicated by number of filled pods was significantly different among treatments. The higher degree of soil compaction, the lower number of filled pods. The filled pods under 500 kPa soil strength was 50% lower compared to that of control.

Co-Authors , Kisman Abdarah, Abdarah Agnia Mawaddah Agus Suroso Ahmad Suriadi, Ahmad Alghifari, Alif Satya Amni, Diya’ Islamiati Astuti, Eni Widia Baharuddin Abubakar Baiq Eliza Prizma Mahardhika Baiq Siti Rohmaniati Bakti, Lalu Arifin Aria Bambang Budi Santoso Bambang Hari Kusumo Bararah, Zakiyyatul Bustan Bustan Bustan, Bustan C.S. Rahardjo1 Dewi Astuti Dwi Ratna Anugrahwati Dwi Ratna Anugrawati Fadila Mawaddah Fahrudin Fahrudin Fahrudin Fahrudin Fahrudin Fahrudin Fahrudin Fahrudin Fahrudin Fahrudin Fahrudin Fahrudin Fahrudin Fahrudin Fahrudin, Fahrudin Fauzi, Taufik H.M. Tarudi Hamkary Salam, Riza Hapsari Hurum, Puji I Dewa Gede Jaya Negara I Gusti Putu Muliarta Aryana I Gusti Putu Muliarta Aryana I Nym Soemeinaboedhy I Nym Soemeinaboedhy I Nym Soemeinaboedhy I Nyoman Soemeinaboedhy I Putu Silawibawa I Wayan Sudika I Wayan Sudika I Wayan Sutresna I Wayan Sutresna I Wayan Sutresna I. Yasin1 Isnaniar Rahmatul Azizah Januardi, Azril Jurnal Pepadu Khaerul Umam Lalu Arifin Aria Bakti Lolita Endang Susilowati Lolita Endang Susilowati Lorinanggarani, Ray Harmida M. Ma’shum M. Sarjan, M. M. Zairin Mahrup Mahrup Mahrup . Mahrup Mahrup Mahrup Mahrup Mahrup Mahrup Mahrup Mahrup Mahrup Mahrup Mahrup Mahrup Mahrup Mahrup, Mahrup Mahrup, Mahrup Mardianti Muhammad Hamam Nasiruddin Muhammad Sarjan Muhammad Tirzady Prasetyo Mukminah Mukminah, Mukminah Mulyati Ni Wayan Dwiani Ni Wayan Dwiani Dulur Ni Wayan Dwiani Dulur Ni Wayan Dwiani Dulur Ni Wayan Sri Suliartini Nihla Farida Nihla Farida Nihla Farida Nurrachman Padusug, Padusung Padusung Padusung Padusung Padusung Padusung Padusung Padusung Padusung Padusung Padusung Padusung, Padusung Putu Silawibawa Raden Unangga Jaya W Reni Anggraeni Rudy Fermana Sabariyah Sabariyah Sari, Diah Mala Satriawan, Muhammad Selvia, Siska Ita Shakila, Nur Asri Soemeinaboedhy, I Nym Srirahardita Pamungkas Sukartno Sukartono Sukartono Sukartono Sukartono Suparman Susilowat, Lolita Endang Sutriono Sutriono Suwardji Suwardji Suwardji Wayan Wangiyana Zaenal Arifin Zakirah, Awanis Zinnur'ain Zuhdiyah Matienatul Iemaaniah

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