Sugarcane (Saccharum officinarum L.) is a plantation crop that is used as raw material for the consumer sugar and industrial sugar. The need for sugar is increasing every year but is not matched by an increase in sugarcane production due to several factors including cultivation management that is not optimal. Sugarcane production begins with good nursery management, including using genetic of seeds and the right planting media. One alternative to improve the quality of growing media is to use humic acid (HA) as a soil enhancer. This study aims to determinate the effect of giving HA on the morphological characteristics of sugarcane seedlings of Bululawang variety (BL). This research was carried out in an integrated laboratory greenhouse at the Polytechnic LPP Yogyakarta from Maret to July 2021. This study used a non-factorial completely randomized design (CRD) with five treatments and three replications consisting of P0 (control), P1 (25 ml.polybag-1), P2 (50 ml.polybag-1), P3 (75 ml.polybag-1), and P4 (100 ml.polybag-1). The morphological characteristics observed is plants height (cm), number of leaves (strands), stem diameter (mm) and longest root length (cm). the results of the study were analyzed using ANOVA at the 5% level and continued using the Duncan Multiple Range Test (DMRT) at the 5% level. The result showed the effect on morphological characters on all observation variables where the P3 treatment had the best growth and morphological characters, so that in general the additional of HA affected the morphological characteristics of sugarcane seedlings of BL varieties.
Pleurotus ostreatus is one of wood fungus whose easier to cultivated, because it has good adaptability to grow. The use of oil palm empty bunches, it is called tankos, as a medium for the growth of Pleurotus ostreatus was carried out to determine the effect of tankos as a medium on it yield.The experiment was conducted at the Production House of mushrooms in DesaCerme, Grogol, Kediri.This experiment was laid on non factorial Randomized Complete Block Design consisting of 5 treatments which is the ratio of tankos and sawdust for medium, there were0%; 100%; 25%; 75%; 50%; 50%; 75%; 25%; and 100%.The results showed that tankos potential as a medium for this fungusas indicated by the content of lignin, cellulose, and hemicellulose which are nutrients for growth and development fungal, the higher the composition of the tankos, the higher the nutrient content. The observations of the hood diameter, harvest interval, and fresh weightwere best in the composition treatment of 50% Tankos: 50% Sawdust.
Tebu (Saccharum officinarum L.) merupakan salah satu tanaman industri yang diperbanyak secara vegetatif, salah satunya dengan sistem budset. Perbanyakan tersebut banyak dilakukan petani, namun memiliki kendala dalam pembentukan akar. Salah satu usaha untuk mempercepat terbentuknya akar tersebut dapat dilakukan dengan menggunakan Zat Pengatur Tumbuh (ZPT). ZPT dari bahan sintetis banyak dijual di pasaran, namun teradapat juga bahan alami yang dapat berfungsi sebagai ZPT tersebut, salah satunya ekstrak rebung bambu. Penelitian ini untuk mengetahui pengaruh konsentrasi ekstrak rebung bambu sebagai Zat Pengatur Tumbuh (ZPT) alami terhadap pertumbuhan bibit tebu (Saccharum officinarum L.). Penelitian dilaksanakan di kebun praktikum Politeknik LPP Yogyakarta, Wedomartani, Kab. Sleman, DI Yogyakarta pada bulan Januari sampai dengan April 2019. Metode penelitian menggunakan rancangan acak kelompok (RAK) faktor tunggal dengan lima taraf perlakuan, yaitu konsetrasi ekstrak rebung dengan perbandingan 2:1, 4:1, 6:1, 8:1 (ekstrak rebung : air), dan kontrol (perendaman air tanpa ZPT). Hasil penelitian menunjukkan ekstrak rebung bambu dengan perbandingan 4:1 mampu
Industri sawit di Indonesia mengalami perkembangan yang pesat, terlihat dari meningkatnya luas perkebunan sawit, baik perkebunan rakyat maupun milik perusahaan. Pencemaran yang ditimbulkan dari industri kelapa sawit dan potensi bahan organik yang terkandung dalam limbah kelapa sawit, menuntut suatu perkebunan kelapa sawit untuk mengelola limbahnya. Salah satu limbah yang dihasilkan dari perkebunan kelapa sawit adalah limbah cair yang keluar dari pabrik dan membentuk endapan padat di kolam penampungan limbah yang disebut sludge. Di sisi lain tanaman kelapa sawit pada umur tertentu membutuhkan tanaman penutup tanah (LCC) dalam tahapan budidayanya, salah satunya Pueraria javanica (Pj) dan untuk dapat menjalankan fungsinya dengan baik sebagai LCC dan penambat unsur N bagi sawit maka tanaman ini harus tumbuh dengan baik pula. Oleh karena itu dilakukan penelitian mengenai pengaruh sludge terhadap pertumbuhan Pueraria javanica dengan harapan limbah sludge dapat dimanfaatkan dengan baik sebagi panambah unsur hara bagi Pueraria javanica. Penelitian ini bertujuan mengetahui dosis terbaik pemberian sludge terhadap pertumbuhan Peuraria javanica. Penelitian ini disusun dalam Rancangan Acak Kelompok Lengkap (RAKL) Non faktorial dengan 4 perlakuan dan 3 ulangan dalam bentuk blok. Perlakuan tersebut terdiri dari P0 sebagai kontrol (Tanpa Pemberian Sludge); P1 (Sludge 100 gram); P2 (Sludge 200 gram); dan P3 (Sludge 300 gram). Hasil penelitian menunjukkan bahwa pemberian sludge 300 gram mampu menghasilkan pertumbuhan terbaik Peuraria javanica dari sisi panjang sulur, jumlah daun, diameter sulur, jumlah bintil akar, bobot basah, dan bobot kering tanaman. THE EFFECT OF OIL PALM SLUDGE ON THE GROWTH OF Pueraria javanica The palm oil industry in Indonesia is rapidly development, from the increasing area of oil palm plantations. Pollution caused by the palm oil industry and the potential for organic matter contained in palm oil waste, requires an oil palm plantation to manage its waste. One of the wastes produced is liquid waste that comes out of the factory and forms solid deposits in the waste collection pond called sludge. Oil palm plants needs legume cover crops (LCC) in the stages of cultivation, one of which is Pueraria javanica (Pj) and to be able to carry out their functions properly as LCC and binder N, this plant must grow well as well. Therefore, a study was conducted on the effect of sludge on the growth of Pueraria javanica in the hope that the sludge waste can be utilized properly as a nutrient addition for Pueraria javanica. This study aims to determine the best dose of sludge on the growth of Peuraria javanica. This study was arranged in a Randomized Completely Block Design (RCBD) with 4 treatments and 3 replications in the form of blocks. The treatment consisted of P0 as a control (without sludge); P1 (sludge 100 grams); P2 (sludge 200 grams); and P3 (sludge 300 grams). The results showed that the administration of 300 grams of sludge was able to produce the best growth of Peuraria javanica in terms of tendril length, number of leaves, tendril diameter, number of root nodules, wet weight, and plant dry weight.
The first aim of this research was to know if brain used on weeds control and changed manual weeds control. The second aim was to know the optimum dosage of bran in any frequency applications on weeds control to increase rice yield. Randomized Complete Block Designe (RCBD) was used and replicated in a three blocks. Analysis of variance was used for data analysis, and than followed with Duncan Multiple Range Test (DMRT) if there was a significant different. Orthogonal Contrast Test was used to know the best treatment in controlled weeds growth. Trend Comparisson Test was used to know the optimum dosage of bran in any frequency applications on weeds control to increase rice yield. The result of this research show that bran could suppress weeds growth and changed manual weeds control, however yet increase rice yield 250 kg/ha of bran wich once and twice application were recommended and treatment combination of 143,33 kg/ha at third application was reach as best combination ti increase rice yield, up to 4,61 ton/ha.Key words: weeds control, manual, bran
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