Articles

Found 6 Documents
Search

Pengaruh Pemotongan Umbi Dan Pemberian Beberapa Dosis Pupuk Npk Majemuk Terhadap Pertumbuhan Dan Hasil Tanaman Bawang Merah (Allium ascolanicum L.) Fatmawaty, Andi Apriany; Ritawati, Sri; Said, Lisa Noviyanti
Agrologia Vol 4, No 2 (2015)
Publisher : Pattimura University, Ambon

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30598/a.v4i2.201

Abstract

Implementation of good cultivation systems can improve onion (Allium ascalonicum L.) yield. The purpose of this study was to determine the effect of tuber cuttings and the  dose of NPK fertilizer on the growth and yield of onion. The experimental design was factorial randomized block design arranged consisting of two factors. The first factor was tuber cuttings which consists of without and with  ¼ and 1/3 cut; the second one was dosage of NPK fertilizer which consists of without and with 200 kg/ha; 400 kg/ha; 600 kg/ha. There are 12 combinations of treatments, each of which is repeated three times. The results showed that there was no interaction effect between tuber cutting and NPK dosages on growth and yield of onion. independent effect of tuber cuttings and NPK dosages also didn’t inflence both parameter. Tuber cuttings  only increase pant height at one and two weeks after planting. Overall, cutting-quarter of the tuber could induce better fresh  weight and dry weight of tubers although statistically didn’t significant.
PENGARUH FREKUENSI PEMBERIAN AIR DAN DOSIS PUPUK KOTORAN AYAM TERHADAP PERTUMBUHAN DAN HASIL TANAMAN KAILAN (Brassica oleraceae var. Alboglabra) Ritawati, Sri; Rohmawati, Imas; Nispatullaila, Ai
Jurnal Agroekoteknologi Vol 6, No 2 (2014)
Publisher : Jurusan Agroekoteknologi Fakultas Pertanian Untirta

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

This research was aimed to know the response of frequency of plant watering and a dose of chicken manure fertilizer on kailan crops. This research was conducted at trial garden Singamerta Ciruas BPTP Banten from June to August 2014. This study used a Randomized Completely Block Design with two factors. The first factor was the frequency of the plant watering with four levels: F1= frequency of plant watering once a day, F2 =frequency of plant watering 2 days, F3 = frequency of plant watering 3 days, F4 = frequency of plant watering 4 days. The second factor was dose of chicken manure fertilizer with four level: P0 = without chicken manurefertilizer (control), P1 = 10 tonnes ha-1 (23.66 g per polybag), P2: 20 tonnes ha-1 (47.33 g per polybag), P3 = 30 tonnes ha-1 (71.00 g per polybag). Eachtreatment was repeated three times, so retrieved 48 the experimental units. The parameters observed were plant height, number of leaves, plant fresh weight, root fresh weight, root dry weight, and plant dry weight. The resultsshowed that frequency of water one day once tend to provide real influence on the parameters of the age of 35 DAP plant height (30.13 cm), number ofleaf age 35 DAP (11.67 strands), plant fresh weight (93.78 g), weight wet roots (9.19 g), root dry weight (2.87 g), and plant dry weight (12.40g). Provision of chicken manure fertilizer with a dose of 47.33 g (20 tonnes ha-1) significant effect on the parameters of the plant fresh weight (96.84 g).
Kesesuaian Model Infiltrasi Philips untuk Prediksi Limpasan Permukaan Menggunakan Metode Bilangan Kurva Ritawati, Sri; Mawardi, Muhjidin; Goenadi, Sunarto
Agritech Vol 32, No 3 (2012)
Publisher : Faculty of Agricultural Technology, Universitas Gadjah Mada, Yogyakarta, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/agritech.9607

Abstract

The objective of this study was to determine suitability and applicability of the Philips infi ltration model for predicting surface runoff using the Curve Number method. The data of infi ltration rate obtained from direct measurements in the fi eld on a variety of land use in the upper Progo sub watershed using double ring infi ltrometer method. Soil samples also taken for determination of physical properties at each location of infi ltration measurement. Data of landuse, rainfall, and river discharge were collected from the available data at Balai PSDA Progo Bogowonto Luk ulo and BP DAS Serayu Opak Progo. Test results showed that Philips infi ltration model was suitable for predicting surface runoff using curve number method. The suitability was examined by signifi cancy of deterministic coeffi cient, correlation coeffi cient, the mass balance, and the distribution of t.ABSTRAKPenelitian ini bertujuan untuk menganalisis kesesuaian model infi ltrasi Philips untuk prediksi limpasan permukaan menggunakan metode bilangan kurva. Data laju infi ltrasi diperoleh dari pengukuran langsung di lapangan pada berbagai macam penggunaan lahan di Sub DAS Progo Hulu menggunakan metode double ring infi ltrometer. Dilakukan pula pengambilan contoh tanah untuk penentuan sifat fi siknya di masing-masing lokasi pengukuran infi ltrasi. Sedangkan data luas penggunaan lahan, hujan, debit sungai digunakan data yang tersedia di Balai PSDA Progo Bogowonto Luk ulo dan BP DAS Serayu Opak Progo. Hasil pengujian menunjukkan bahwa model infi ltrasi Philips cukup sesuai digunakan untuk prediksi limpasan permukaan menggunakan metode bilangan kurva. Kesesuaian ini dilihat dari nilai koefi sien deterministik, koefi sien korelasi, imbang massa, dan distribusi t yang signifi kan.
ANALISIS KESESUAIAN MODEL INFILTRASI HORTON DAN PHILIPS PADA BERBAGAI PENGGUNAAN LAHAN DI SUB DAS PROGO HULU Ritawati, Sri
Jurnal Agroekoteknologi Vol 3, No 1 (2011)
Publisher : Jurusan Agroekoteknologi Fakultas Pertanian Untirta

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

The objective of this research were analyzed the suitability of Horton and Philips infiltration models in various land use in upper Progo sub watersheds. Infiltration rate was measured in the field used inundation method by double ring infiltrometer. This research also needed soil physic data, shape and land use area of upper Progo sub watersheds. Models were tested by comparing measurement infiltration rate and infiltration rate of the model, were tested statistically using correlation coefficient (R), deterministic coefficient (R2), and paired test (T test). The test results showed that Tcounted value were smaller than Ttable for both Horton and Philips infiltration model at various types of land use, but R and R2 value of Philips infiltration model higher than Horton. Conclusion of this research, that both Philips and Horton infiltration models were still quite suitable for determination infiltration rate in upper Progo sub watersheds. Philips infiltration model was better because simpler, constants more easily searchable, and not too influenced by subjectivity.Keywords : infiltration models, land use, suitability analysis, watersheds
PENGARUH PEMBERIAN BEBERAPA JENIS PUPUK KOTORAN HEWAN DAN KONSENTRASI AIR KELAPA TERHADAP HASIL TANAMAN TOMAT (Lycopersicum esculentum Mill.) Ritawati, Sri; Firnia, Dewi; Rosyitah, Ita
Jurnal Agroekoteknologi Vol 9, No 1 (2017)
Publisher : Jurusan Agroekoteknologi Fakultas Pertanian Untirta

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

This research was aimed to know the giving of some cattles manures and coconut water concentration to yield of tomato (Lycopersicum esculentum mill). This research had been conducted in the experimental farm Singamerta Institute for Agricultural Technology Banten. Starting from September to December 2013. The research used Randomized Completely Block Design, concisted of two factors. The first factors was the giving of cattles manures with three levels, they were: P0 (control), P1 (chicken manure) and (P2) cow manure. The second factor was coconut water concentration with four levels, they were: K0 (control), K1 (coconut water concentration 500 ml + water 500 ml), K2 (coconut water concentration 750 ml + water 250 ml ) and K3 (coconut water concentration 1000 ml). The result showed that the giving chicken manure gave the significant effect on number of fruits (4,53 fruit), the weight of fruits (84,63 g), diameter of fruits (28,16 mm). While the 1000 ml of coconut water concentration gave the significant effect on the weight of fruits (85,10 g) and the diameter of fruits (28,68 mm).Keywords : tomato, cattles manures, coconut water
PENGARUH PEMBERIAN BEBERAPA JENIS PUPUK KOTORAN HEWAN DAN KONSENTRASI AIR KELAPA TERHADAP HASIL TANAMAN TOMAT (Lycopersicum esculentum Mill.) Ritawati, Sri; Firnia, Dewi; Rosyitah, Ita
Jurnal Agroekoteknologi Vol 9, No 1 (2017)
Publisher : Jurusan Agroekoteknologi Fakultas Pertanian Untirta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33512/j.agrtek.v9i1.5044

Abstract

This research was aimed to know effect of some kinds of cow manures application and coconut water concentration to yield of tomato (Lycopersicum esculentum Mill). This research was conducted in the experimental farm Singamerta Institute for Agricultural Technology Banten. Starting from September until December 2013. The research used Randomized Completely Block Design, concisted of two factors. The first factors was the giving of cattles manures with three levels, they were : P0 (control), P1 (chicken manure) and (P2) cow manure. The second factor was coconut water concentration with four levels, they were: K0 (control), K1 (coconut water concentration 500 ml + water 500 ml), K2 (coconut water concentration 750 ml + water 250 ml ) and K3 (coconut water concentration 1000 ml). The result showed that the giving chicken manure gave the significant effect on number of fruits (4.53 fruit), the weight of fruits (84.63 g), diameter of fruits (28.16 mm). While the 1000 ml of coconut water concentration gave the significant effect on the weight of fruits (85.10 g) and the diameter of fruits (28.68 mm).Keywords: Coconut water, Cow manures, Tomato