Pengaruh Formalin dan Periode Simpan terhadap Viabilitas dan Pertumbuhan Awal Benih Kelengkeng (Dimocarpus longan)

Penelitian ini bertujuan untuk mengkaji pengaruh penggunaan formalin dan periode simpan terhadap viabilitas dan pertumbuhan awal benih kelengkeng. Rancangan percobaan berdasarkan rancangan acak lengkap faktorial dengan 4 ulangan. Faktor pertama adalah formalin (0%, 0,5%, 1% dan 2%). Faktor kedua adalah periode simpan dengan 3 taraf (tanpa penyimpanan, 15 dan 30 hari). Parameter yang diamati adalah daya kecambah, kecepatan berkecambah, Jumlah daun dan tinggi bibit kelengkeng. Data yang diperoleh dianalisis ragam taraf 5% dan apabila berpengaruh nyata (p<0,05), dilanjutkan dengan uji jarak berganda Duncan (DMRT) pada taraf 5%. Hasil penelitian menunjukkan bahwa meningkatnya kadar formalin, nyata menurunkan daya kecambah dan kecepatan berkecambah, sedangkan kadar formalin 0,5% dengan 30 hari periode simpan optimal meningkatkan jumlah daun dan tinggi tanaman. Kata kunci : kelengkeng, formalin, periode simpan, viabilitas, pertumbuhan awal

Growth and Production of Sweet Corn (Zea mays var. Saccharata) with Organic and Anorganic Fertilizer in Kendal

This study aims to examine the response of growth and production of sweet corn plants in application of organic and inorganic fertilizers. The research was conducted on July - October 2019 in Merbuh Village, Singorojo Sub-District, Kendal District and at Ecology and Plant Production Laboratory, Faculty of Animal and Agricultural Sciences, Diponegoro University, Semarang. The study used a randomized block design with 7 monofactor treatments with and each experimental unit was repeated 4 times. The treatments consisted of inorganic fertilizer (P0), chicken manure+inorganic (P1), goat manure+inorganic (P2), cow manure+inorganic (P3), chicken manure ‘plus’ (P4), goat manure ‘plus’ (P5), cow manure ‘plus’ (P6). Data were analyzed by variance and for treatments that showed signoficant differences further tests were carried out using DMRT at the 5% level. The observed variables were plant height, number of leaves, stalk diameter, cob production with cornhusk, and cob production without cornhusk. The results showed that the application of organic and inorganic fertilizers only affected stalk diameter. Stalk diameter in cow manure+inorganic gave the highest results compared to other treatments. There is  no influence on variables observed shows that the addition of gamal leaves as a source of N-organic and phosphate rock (BP) as P-organic in manure plus (chicken, goat, cow) can be an alternative solution to substitute inorganic fertilizers (urea and TSP) on sweet corn plant

PENGARUH PUPUK ANORGANIK DAN PUPUK KANDANG DIPERKAYA NP-ORGANIK TERHADAP PERTUMBUHAN DAN PRODUKSI JAGUNG PULUT (Zea mays ceratina L.)

Fertilization is one of the factors that influence the growth and production of sticky maize. This study examined the effect of organic-NP enriched manure on the growth and yield of sticky maize. The study used a Randomized Complete Block Design (RCBD) with four replicates. The treatments are P0 (ZA + TSP), P1 (cow manure + ZA + TSP), P2 (goat manure + ZA + TSP), P3 (poultry manure+ ZA + TSP), P4 (cow manure + Gliricidia sepium + BP), P5 (goat manure + Gliricidia sepium + BP), P6 (poultry manure + Gliricidia sepium + BP). The parameters observed were plant height, number of leaves, chlorophyll content, cobs length, and cobs diameter. The results showed that the number of leaves, chlorophyll content in the generative phase, and cobs diameter in treatment P1 (cow manure + ZA + TSP) is equivalent to P4 (cow manure + Gliricidia sepium + BP), P2 (goat manure + ZA + TSP) is equivalent to P5 (goat manure + Gliricidia sepium + BP), and P3 (poultry manure+ ZA + TSP) is equivalent to P6 (poultry manure + Gliricidia sepium + BP). The cobs length in treatment P3 is significantly higher compared to P6. All treatments have no effect on plant height and chlorophyll content in the vegetative phase

PERTUMBUHAN DAN PRODUKSI TANAMAN KACANG TANAH (Arachis hypogaea L.) VARIETAS KANCIL DENGAN PEMUPUKAN PUPUK KANDANG DIPERKAYA BATUAN FOSFAT

Penelitian ini bertujuan mengkaji pengaruh pupuk kandang diperkaya dengan P-batuan fosfat (pukan plus) terhadap pertumbuhan dan produksi tanaman kacang tanah varietas kancil. Penelitian telah dilaksanakan pada April 2021 – Oktober 2021 di Lahan Penelitian Agrotechno Park Semarang. Penelitian ini menggunakan rancangan percobaan monofaktor dengan dasar rancangan acak kelompok dengan 7 perlakuan dan 4 ulangan. Pupuk fosfat yang diberikan untuk tanaman kacang tanah sebanyak 36 kg P2O5/ha (78,26 kg TSP/ha dan 900  kg BP/ha). Perlakuan pupuk kandang menggunakan dosis 15 ton/ha. Perlakuan pemupukan dalam penelitian ini yaitu P0 (TSP), P1 (Pukan sapi + TSP), P2 (Pukan ayam + TSP), P3 (Pukan kambing + TSP),  P4 (Pukan sapi plus), P5 (Pukan ayam plus), dan P6 (Pukan kambing plus). Parameter yang diamati adalah tinggi tanaman, jumlah daun, kadar klorofil, produksi polong, produksi biji, jumlah polong, produksi segar jerami, produksi bahan kering jerami, dan serapan P jerami. Data semua parameter dianalisis ragam dan dilanjutkan dengan DMRT pada taraf 5%. Hasil penelitian menunjukkan bahwa pemberian pukan plus hanya berpengaruh pada parameter kadar klorofil 45 HST dan produksi polong kosong. Pemberian pukan plus tidak memberikan pengaruh pada parameter tinggi tanaman, jumlah daun, produksi polong (isi dan total), produksi biji, produksi segar Jerami, produksi bahan kering Jerami, dan serapan P Jerami. Disimpulkan bahwa pemberian perlakuan pukan plus memberikan hasil pertumbuhan dan produksi kacang tanah yang setara dengan perlakuan pukan + TSP dan kontrol (TSP). Hal tersebut menunjukkan bahwa pupuk kandang diperkaya batuan fosfat dapat menggantikan peran pupuk fosfat anorganik.

Pertumbuhan Jagung Manis (Zea Mays Saccharata) Dan Kadar Fosfor Jerami Dengan Pemupukan Organik Dan Urea (the Growth of Sweet Corn (Zea Mays Saccharata) and Phosporus Concentration of Stover with Urea and Organic Fertilization)

The study was conducted to examine the effect of organic and urea fertilizer on the growth and phosphorus concentration of sweet corn stover. The field experiment was conducted in August – December 2013 in Faculty of Animal and Agricultural Sciences laboratory Diponegoro University. Material used in this study was sweet corn seed, compost, manure, charcoal and urea (46% N) also KCl and TSP as basic fertilizer. The experimental design used was Monofaktor Completely Randomized Design (CRD) 9 treatments with 3 replicates, so there are 27 plots with the size of each is 1.6 x 1.2 m (1.92 m2). The parameters observed were plant height, dry matter yield, and phosphorus concentration of sweet corn stover. Research data processed by analysis of variance, if the treatment has significant effect, then followed by contrast test. The result showed that fertilizer application deliver significant effect on height plant, dry matter yield, and phosporus concentration compared to without fertilizer. Organic fertilizer plus urea deliver higher significant effect on height plant and dry matter yield compared to organic fertilizer. Compost plus charcoal deliver higher significant effect on phosporus concentration of sweet corn stover compared to manure plus charcoal

Pengaruh jenis ekstrak kecambah dan pupuk kandang pada komposisi media tanam terhadap pertumbuhan stek murbei (Morus alba)

ABSTRACT  The purpose of the research was to study the effect of various sprouts extracts and various types of manure on the composition of the growing media on the growth of Mulberry cuttings. The research was carried out at Screen House in Kalisidi Village, West Ungaran, Semarang Regency and Diponegoro University Physiology and Plant Breeding laboratory. The research design used was a Completely Randomized Design (CRD) 5x3 factorial pattern and repeated 3 times. The first factor was soaking cuttings on sprout extract, without treatment (K0), giving synthetic growth regulator (K1), soaking soybean sprout extract (K2), soaking peanut sprout extract (K3), soaking mung bean sprout extract (K4). The second factor is the type of manure in the composition of the growing media with 3 types of fertilizers namely cow manure (P1), chicken manure (P2), goat manure (P3). The results showed that the treatment of soaking cuttings with sprout extract had a significant effect on the number of roots, and the treatment of manure types on the composition of the growing media had a significant effect on all parameters of observation.Keywords: sprouts extract, root number, planting media, Mulberry, cutting. ABSTRAK  Tujuan dari penelitian adalah untuk mengkaji pengaruh pemberian berbagai ekstrak kecambah dan berbagai jenis pupuk kandang pada komposisi media tanam terhadap pertumbuhan vegetatif stek murbei. Penelitian ini di Rumah Kassa Desa Kalisidi Kecamatan Ungaran Barat Kabupaten Semarang dan Laboratorium Fisiologi dan Pemuliaan Tanaman, Fakultas Peternakan dan Pertanian, Universitas Diponegoro, Semarang. Rancangan penelitian yang digunakan yaitu Rancangan Acak Lengkap (RAL) pola faktorial 5x3 dan diulang sebanyak 3 kali. Faktor pertama adalah perendaman bahan stek pada ekstrak kecambah yaitu tanpa perlakuan perendaman (K0), pemberian ZPT sintetis (K1), perendaman ekstrak kecambah kedelai (K2), perendaman ekstrak kecambah kacang tanah (K3), perendaman ekstrak kecambah kacang hijau (K4). Faktor kedua adalah jenis pupuk kandang pada komposisi media tanam dengan 3 jenis pupuk yaitu pupuk kandang sapi (P1), pupuk kandang ayam (P2), pupuk kandang kambing (P3). Hasil penelitian menunjukkan bahwa pada perlakuan perendaman stek dengan ekstrak kecambah berpengaruh nyata pada parameter jumlah akar, dan perlakuan jenis pupuk kandang pada komposisi media tanam memberikan pengaruh nyata pada semua parameter pengamatan. Kata kunci : Ekstrak kecambah, jumlah akar, media tanam, Murbei, stek