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All Journal METANA Agrovigor: Jurnal Agroekoteknologi Jurnal Agroekoteknologi Journal of Agro Complex JURNAL GALUNG TROPIKA Caraka Tani: Journal of Sustainable Agriculture JURNAL AGROHITA Jurnal Agroplasma AGROTEK: Jurnal Ilmiah Ilmu Pertanian PERTANIAN TROPIK

Didik Wisnu Widjajanto

Program Studi Agroekoteknologi, Fakultas Peternakan Dan Pertanian, Universitas Diponegoro

Author-ID : 415953

Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Economics, Econometrics & Finance Environmental Science Immunology & microbiology Industrial & Manufacturing Engineering Other

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Uji efektivitas kombinasi pupuk bio-slurry dengan pupuk npk terhadap pertumbuhan dan produksi dua varietas padi sawah (oryza sativa L.) Ahmad Khanafi; Yafizham Yafizham; Didik Wisnu Widjajanto
Journal of Agro Complex Vol 2, No 2 (2018)
Publisher : Department of Agriculture, Animal and Agricultural Sciences, Diponegoro University, Semara

The objective of this research was to investigate the effectiveness of combination of bio-slurry fertilizer and NPK fertilizer on the growth and production of two varieties of rice. The experiment was assigned in a completely randomized design of factorial pattern. The first factor was the combination of bio-slurry and NPK fertilizer that consisted of P0 = no added fertilizer (control) 0 ton/ha, P1 = NPK fertilizer 550 kg/ha (165 kg N, 33 kg P, 45 kg K); P2 = bio-slurryfertilizer 2.3 tons/ha (45 kg N, 14 kg P, 23 kg K) and NPK fertilizer 400 kg/ha (120 kg N, 24 kg P, 32 kg K); P3 = bio-slurryfertilizer 4.6 tons/ha (90 kg N, 28 kg P, 46 kg K) and NPK fertilizer 250 kg/ha (75 kg N, 15 kg P, 20 kg K); P4 = bio-slurry fertilizer 5.9 tons/ha (115 kg N, 36 kg P, 59 kg K) and NPK fertilizer 100 kg/ha (30 kg N, 6 kg P, 8 kg K); and P5 = bio-slurryfertilizer 8.5 tons/ha (165 kg N, 52 kg P, 85 kg K). The second factor was varieties of rice that consisted of V1 : IR-64 and V2 : Ciherang. Each treatment was repeated three times. Parameters observed were plant height, number of tillers, weight of 1.000 grains, and rice production. Data were analyzed using ANOVA and continued with Duncan’s Multiple Range Test (DMRT). The results showed that the combination of bio-slurry fertilizer and NPK fertilizer were significantlyaffect (p <0.05)all observation parameters, while varieties of wetland rice did not show significant effect on all observation parameters (p<0.05). The application of bio-slurry fertilizer in single treatment or in either combination with NPK fertilizer had the same result with the treatment of NPK fertilizer on the growth and yield of rice. Keywords: rice, fertilizer combination, bio-slurry fertilizer, NPK fertilizer

Pertumbuhan dan produksi tanaman sawi Pakcoy (Brassica rapa l.) akibat dibudidayakan pada berbagai media tanam dan dosis pupuk organik Nutri Sri Damayanti; Didik Wisnu Widjajanto; Sutarno Sutarno
Journal of Agro Complex Vol 3, No 3 (2019): Online
Publisher : Department of Agriculture, Animal and Agricultural Sciences, Diponegoro University, Semara

Tujuan penelitian adalah untuk mengetahui pengaruh pemberian berbagai media tanam serta mengetahui level dosis pupuk kandang kambing yang efektif untuk pertumbuhan dan produksi sawi pakcoy (Brassica rapa L.). Rancangan penelitian yang digunakan adalah rancangan acak lengkap pola faktorial (5x3) dengan 3 ulangan. Penelitian mengevaluasi 2 faktor perlakuan, yaitu faktor pertama perlakuan media tanam (M) yaitu M0 = (tanah), M1 = (tanah + arang sekam) (1:1) , M2 = (tanah + sabut kelapa) (1:1). Faktor kedua level dosis pupuk kandang kambing (D) yaitu (D0 = 0 kg N/ha), (D1 = 125 kg N/ha), (D2 = 150 kg N/ha), (D3 = 175 kg N/ha), (D4 = 200 kg N/ha). Parameter yang diamati adalah serapan N, jumlah daun, berat segar dan kering tajuk dan akar. Data yang diperoleh dianalisis dengan ANOVA dan pada perlakuan yang berbeda dilanjutkan dengan analisis lanjut Duncan test. Hasil penelitian menunjukkan bahwa perlakuan media tanam (M1) tanam tanah + arang sekam padi dan penggunaan perlakuan level dosis pupuk kandang kambing (D4) 200 kg N/ha memberikan hasil terbaik untuk pertumbuhan dan produksi sawi pakcoy (Brassica rapa L.). Secara keseluruhan perlakuan berpengaruh nyata terhadap parameter yang diamati yaitu serapan N, jumlah daun, berat segar dan kering tajuk dan akar. Kata kunci : media tanam, dosis pupuk kandang kambing.

Pengaruh berbagai dosis nitrogen dan waktu pemberian pupuk organik cair terhadap pertumbuhan dan produksi tanaman terung hijau (Solanum melongena L.) Dedi Purba; Didik Wisnu Widjajanto; Endang Dwi Purbajanti
Journal of Agro Complex Vol 3, No 3 (2019): Online
Publisher : Department of Agriculture, Animal and Agricultural Sciences, Diponegoro University, Semara

Percobaan bertujuan untuk mengevaluasi efek dari berbagai dosis nitrogen dan waktu penerapan pupuk organik cair (POC) dan interaksi dari dua perlakuan pada pertumbuhan dan produksi terong hijau. Desain acak lengkap disusun sebagai pola faktorial 4x3 digunakan di seluruh percobaan. Setiap unit percobaan diulang tiga kali. Faktor pertama terdiri dari berbagai dosis POC yaitu D0: tidak ada penambahan POC, D1: 25 kg N/ha, D2: 50 kg N/ha, D3: 75 kg N/ha, masing-masing setara dengan 800, 1600, 2400 ml POC/tanaman. Faktor kedua adalah waktu aplikasi POC terdiri dari M1, M2 dan M3 berturut-turut selama 7, 28 hari setelah tanam (HST) dan pada saat berbunga. Parameter yang diamati meliputi jumlah daun, klorofil daun tanaman, jumlah dan bobot buah segar. Data yang dikumpulkan dianalisis dengan menggunakan ANOVA dan Duncan Multiple Range Test (DMRT) digunakan untuk analisis lebih lanjut. Hasil penelitian menunjukkan bahwa ada pengaruh interaksi yang signifikan dari tingkat perlakuan POC yang berbeda dan waktu aplikasi POC terutama pada bobot buah segar. Dosis POC 1600 ml/tanaman meningkatkan jumlah buah. Perlakuan kombinasi 2400 ml/tanaman dan 7 HST meningkatkan kualitas fisik tanaman terung hijau. Kata kunci: terung hijau, pupuk organik cair, nitrogen, waktu aplikasi POC

Pertumbuhan dan produksi rumput gajah odot dan kacang tanah pada sistem pertanian campuran dengan berbagai jarak dan waktu tanam Alama Dian Rahayu; Didik Wisnu Widjajanto; Sutarno Sutarno
Agrovigor Vol 14, No 2 (2021): September
Publisher : Universitas Trunojoyo Madura

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21107/agrovigor.v14i2.11212

Penelitian bertujuan mengkaji perlakuan jarak tanam rumput gajah var. odot dan waktu tanam kacang tanah terhadap pertumbuhan serta produksi rumput gajah var. odot dan kacang tanah. Penelitian lapang dilaksanakan di Desa Kalongan, Kecamatan Ungaran Timur, Kabupaten Semarang. Analisis karakteristik tanah dan tanaman dilakukan di Laboratorium Ekologi dan Produksi Tanaman, Fakultas Peternakan dan Pertanian, Universitas Diponegoro, Semarang dari bulan September 2020 sampai Februari 2021. Percobaan faktorial 2 x 4 dengan rancangan acak kelompok dengan 3 kelompok ulangan. Faktor pertama jarak tanam rumput gajah var. odot terdiri dari J1 : 90 cm x 60 cm, dan J2 : 90 cm x 45 cm. Faktor kedua waktu tanam kacang tanah terdiri dari T1 : 2 minggu sebelum potong paksa, T2 : 1 minggu sebelum potong paksa, T3 : pada saat potong paksa, dan T4 : 1 minggu setelah potong paksa. Data yang diperoleh dianalisis secara statistik menggunakan analisis varians dan selanjutnya diuji menggunakan uji Duncan pada taraf kepercayaan 5%. Hasil penelitian menunjukkan bahwa pada perlakuan jarak tanam rumput gajah var. odot berpengaruh nyata pada jumlah polong kacang tanah, sedangkan perlakuan waktu tanam kacang tanah menunjukkan pengaruh nyata terhadap jumlah anakan dan berat basah rumput odot, tinggi, jumlah daun, dan berat 100 biji kacang tanah.Berdasarkan hasil percobaan dapat disimpulkan bahwa budidaya kacang tanah dapat direkomendasikan untuk ditanam campur dengan rumput gajah var. odot.

Peran Pertanian Organik Berbasis Ternak dalam Mendukung Ketersediaan Pangan Sehat dan Aman dn Mencapai Kelestarian Pertanian-Lingkungan Didik Wisnu Widjajanto; T. Honmura
Caraka Tani: Journal of Sustainable Agriculture Vol 20, No 2 (2005): October
Publisher : Universitas Sebelas Maret

Practicing intensive agriculture by implementing chemical substances in agriculture systems have been suspected cause problem on environment. Increase content of nitrate in drinking water and aquatic systems and greenhouse gases status of atmosphere may be due to the miss-practice of agricultural activity. Organic farming (OF) is one of techniques that may be implemented in order to solve this problem. Besides, its benefit in maintaining agro-environmental sustainability, practicing OF has weakness in the field. Therefore, to achieve its goal suitable strategy is needed. In the OF based on livestock, integration of crop-livestock-soil may occur, where among those three interact one each other and therefore ideal system (Zero wastes) may be established. Improvement of pasture increase, highly forage crop productivity and availability is expected influence on the performance of livestock. On the other hand, the return of animal wastes into pasture may tend to decrase the risk of environmental pollution.

PERTUMBUHAN DAN PRODUKSI JAGUNG PULUT (Zea mays ceratina) DENGAN PEMUPUKAN ANORGANIK DAN PUPUK KANDANG DIPERKAYA N-ORGANIK DAN P-ALAM Ratna Dwi Kartikasari; Dwi Retno Lukiwati; Didik Wisnu Widjajanto
AGROTEK: Jurnal Ilmiah Ilmu Pertanian Vol 6, No 1 (2022): Maret
Publisher : Percetakan Umi Toaha Makassar

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33096/agrotek.v6i1.172

The growth and yield of waxy corn are determined by organic and inorganic fertilizers. The addition of organic-N (N-Leucaena leucocephala) and nature-P (P-rock phosphate) can be used as a substitute for inorganic fertilizers (urea and TSP). The present study investigated the effects of N-leucaena leucocephala and P-rock phosphate enriched manure (manure plus) on the growth and yield of waxy corn. The experiment was conducted in a randomized complete block design with seven treatments and four replicates: T0 (urea + TSP), T1 (urea+TSP + cattle manure), T2 (urea+TSP + goat manure), T3 (urea+TSP + poultry manure), T4 (N-L. leucocephala+ P-rock phosphate + goat manure), T6 (N-L. leucocephala+ rock phosphate + poultryobserved were plant height, chlorophyll content, cob weight with cornhusk and without cornhusk, and cob length with cornhusk and without cornhusk. The data was analyzed using analysis of variance, followed by Duncan's multiple range tests.The results showed that manure plus had a significant effect (P<0.05) on cob weight with cornhusk and without cornhusk and cob length without cornhusk. The parameters of plant height, leaf chlorophyll content, and cob length with cornhusk were similar in all treatments. Based on the research results, it may be concluded that the addition of Leucaena leucocephala and rock phosphate to manure can improve the quality of the organic fertilizer and can replace inorganic fertilizer.

PRODUKSI BIOGAS DARI LIMBAH KOTORAN SAPI PERAH DENGAN REAKTOR BIOGAS SISTEM BATCH DI DESA LEREP KABUPATEN UNGARAN Didik Wisnu Widjajanto; Heny Kusumayanti; Sri Rejeki
METANA Edisi Khusus Februari 2011
Publisher : Universitas Diponegoro

Abstract Biogas is mixed gas of methane(CH4), carbondioxide (CO2) and others which is produced as a result of moterial degradation of organic material such as animal and humon feces or plant byproduct by methanagen bacterial activity in biodigester. The present work is aimed to produce biogas fromfeces of milk cow. Biogas reactor used is built by IbM team of "IbM Peternak sapi Perah Penghasil Biogas di larep-Ungaran" (batch system). Result of present work revealed that 4 m3 biogas reactor with batch system is able to produce biogas starting doy 4. ln the following day, the biogas production increase and reach peak on day seven which is produce 42,85 liter of mix gas or 25,71 liter of methana gas Keywords : biogas. batch system, cow feces http://ejournal.undip.ac.id/index.php/metana/editor/viewMetadata/1643

HASIL TANAMAN PADI (Oryza sativa L Var. Inpari) AKIBAT PUPUK BIOSLURRY DAN PEMBENAH TANAH PADA TIGA JENIS TANAH apitya muktifani; Sumarsono Sumarsono; Didik Wisnu Widjajanto
Jurnal Agroekoteknologi Vol 14, No 1 (2022)
Publisher : Jurusan Agroekoteknologi Fakultas Pertanian Untirta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33512/jur.agroekotetek.v14i1.14329

ABSTRACTThe impact of soil fertility degradation is the continuous use of inorganic fertilizers, which caused soil organic matter and rice production degradation. The study was conducted to obtain the optimal dose of bioslurry fertilizer for rice growth and production in andosol, regosol, and aluvial soil types without or with soil amendment. The experiment used split split plot with Completely Randomized Design and three replication. The main plot is soil type, L1:Andosol, L2:mediterranean, and L3:aluvial. The subplots is soil amendment, R1:without amendment, and R2:with amendment. The sub subplots used is bioslurry fertilizer, P1:125kgN/ha, P2:1,5 x 125kgN/ha, and P3: 2 x 125kgN/ha. The results showed that interaction of soil amendment and bioslurry dose had a significant (P<0.05) on the growth and production of Inpari rice. The interaction of soil type and amendment showed significance (P<0.05) in plant height, number of tillers, parameters with highest result at aluvial soil with amendment. The interaction of amendment and bioslurry showed significance (P<0.05) on fresh weight and dry weight of grain parameter with highest result at dose of 2 x 125kgN/ha with amendment. The interaction between soil type, amendment, and bioslurry show significance (P<0.05) at weight of 1000 seeds, and production with ameliorant parameters with highest result in aluvial soil types with 2 x 125kgN/ha dose. Alluvial soil with amendment and bioslurry 2 x 125 kg N/ha dose gave the highest rice production yield of 15,94 t/ha. Keywords: amendment, bioslurry, rice, soil type

PERTUMBUHAN DAN PRODUKSI PADA TUMPANGSARI RUMPUT GAJAH ODOT-KEDELAI DENGAN BERBAGAI JARAK DAN WAKTU TANAM Jon Andri Efendi Tumanggor; S Sutarno; Didik Wisnu Widjajanto
JURNAL GALUNG TROPIKA Vol 11 No 3 (2022)
Publisher : Fapetrik-UMPAR

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31850/jgt.v11i3.932

Diversification is one solution to increase crop yields. The intercropping system is an example of agricultural diversification. The aim of this study is to determine the effect of various elephant grass cv. odot planting distances and various soybean planting times on the growth and production of elephant grass cv. odot and soybean in an intercropping system. The research was conducted from September 2020 - February 2021 in Kalongan Village, East Ungaran Sub-district, Semarang District, Central Java Province. The 2 × 4 factorial experiment with randomized block design and 3 repeats were used in this study. The first factor is planting distances of elephant grass cv. odot (J) which are 60 × 90 cm (J1) and 45 × 90 cm (J2). The second factor is soybean planting times (T), which were 26, 19, 12, and 5 days before trimming of elephant grass cv. odot for T1, T2, T3 and T4. The parameters observed for elephant grass cv. odot were height, the number of tillers and production, while for soybean were height, the number of leaves and productivity. The data obtained were processed using Analysis of variance (ANOVA) and then the parameters that had a significant effect were tested with Duncan's Multiple Range Test (DMRT) at a 5% level. Treatment of planting distances and planting times did not significantly affect the growth of elephant grass cv. odot, soybean growth, and productivity of elephant grass cv. odot. Planting distances treatment did significantly affect soybean productivity. The combination treatment of 60 × 90 cm planting distance on elephant grass cv. Odot and 26 days before trimming of elephant grass cv. odot on soybean planting time is the best result for intercropping of elephant grass cv. odot and soybean.

PENGARUH BERBAGAI DOSIS FOSFOR DAN PEMANGKASAN BAGIAN PUCUK TERHADAP PERTUMBUHAN CABAI HIAS UNGARA Givrael Bima Christi; Didik Wisnu Widjajanto; Sutarno Sutarno
Jurnal AGROHITA: Jurnal Agroteknologi Fakultas Pertanian Universitas Muhammadiyah Tapanuli Selatan Vol 8, No 1 (2023): JURNAL AGROHITA
Publisher : Fakultas Pertanian Universitas Muhammadiyah Tapanuli Selatan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31604/jap.v8i1.8130

Tanaman cabai (Capsicum annum L.) saat ini diminati sebagai tanaman hias. Salah satu varietas cabai hias yang cukup terkenal yaitu cabai hias varietas Ungara. Cabai hias Ungara memiliki warna buah ungu kehitaman hingga merah, bentuk buah membulat, termasuk memiliki tinggi tanaman yang tinggi dibandingkan cabai hias lainnya karena tidak mengalami pemendekan ruas. Cabai Ungara memiliki umur bunga lebih lama dan umur panen buah yang lebih lama. Penelitian bertujuan untuk mengetahui pengaruh dosis fosfor berbasis air cucian beras dan pemangkasan pucuk terhadap pertumbuhan cabai hias Ungara. Penelitian dilaksanakan pada Januari 2021-Mei 2021 di greenhouse Fakultas Peternakan dan Pertanian, Universitas Diponegoro, Semarang, Jawa Tengah.Penelitian menggunakan percobaan faktorialdengan rancangan dasar Rancangan Acak Lengkap (RAL). Faktor pertama adalah dosis fosfor berbasis air cucian beras (B) yaitu kontrol (B0), 54,94 kg P2O5/ha atau setara4,5 L air cucian beras (B1), 73,2 kg P2O5/ha atau setara6 L air cucian beras (B2) dan 91,49 kg P2O5/ha atau setara 7,5 L air cucian beras (B3). Faktor kedua adalah waktu pemangkasan pucuk (P) yaitu kontrol (P0), 14 hari stelah semai, HSS (P1), 21 HSS (P2), 28 HSS (P3). Data dianalisis secara statistik menggunakan ANOVA dan pada parameter yang menunjukkan pengaruh yang nyata dari perlakuan, dilanjutkan dengan Uji Jarak Berganda Duncan (DMRT). Parameter yang diamati meliputi tinggi tanaman, jumlah daun, produksi, jumlah buah dan bobot buah. Hasil penelitian menunjukkan bahwa perlakuan berbagai dosis fosfor menunjukkan tinggi tanaman dan jumlah buah lebih rendah dibandingkan kontrol, sedangkan bobot per buah lebih tinggi dari kontrol. Perlakuan dengan berbagai dosis fosfor dan pemangkasan pucuk tidak berpengaruh nyata terhadap jumlah daun dan produksi tanaman. Hasil penelitian menunjukkan bahwa aplikasi fosfor melalui air cucian beras masih terlalu dini sehingga pertumbuhan cabai hias Ungara terhambat. Dapat disimpulkan bahwa aplikasi fosfor melalui air cucian beras sebaiknya mempertimbangkan waktu yang tepat.

Co-Authors Ahmad Khanafi Alama Dian Rahayu apitya muktifani Dedi Purba Dwi Retno Lukiwati Endang Dwi Purbajanti Givrael Bima Christi Heny Kusumayanti Indiarto, Gunawan Jon Andri Efendi Tumanggor Kriswijayanto, Triyoga Budi Lina Lutfiana Nutri Sri Damayanti Ratna Dwi Kartikasari S Sutarno Sri Rejeki Sumarsono Sumarsono Sumarsono Sumarsono Sumarsono Sunartadi, Difa Rosalina Susilo Budiyanto Sutarno Sutarno Sutarno Sutarno T. Honmura Yafizham Yafizham Yulia Anjani Maula

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