scholarly journals Pengaruh pupuk hayati majemuk dan pupuk fosfor terhadap pertumbuhan dan hasil kedelai di inceptisol Jatinangor

Kultivasi ◽  
2018 ◽  
Vol 17 (3) ◽  
Author(s):  
Aep Wawan Irwan ◽  
Tati Nurmala
Keyword(s):  
Plant Height ◽  
Root Nodules ◽  
Block Design ◽  
Growth Yield ◽  
Dry Weight ◽  
Limiting Factor ◽  
Index Number ◽  
Area Index ◽  
P Fertilizer ◽  
Biological Fertilizer

Sari. Kedelai merupakan salah satu tanaman yang membutuhkan fosfor dalam jumlah besar. Ketersediaan P merupakan faktor pembatas utama pada pertumbuhan dan produksinya. Fosfor tidak banyak tersedia untuk tanaman, sehingga dibutuhkan pupuk hayati yang mengandung mikroorganisme untuk dapat melarutkan fosfor. Penelitian ini bertujuan untuk memperoleh dosis pupuk hayati majemuk dan pupuk P yang efektif dan dapat memberikan pengaruh terbaik terhadap pertumbuhan, komponen hasil, dan hasil tanaman kedelai kultivar Anjasmoro. Penelitian dilakukan pada bulan Maret sampai Juni 2017 di Kebun Percobaan Ciparanje, Fakultas Pertanian Universitas Padjadjaran, dengan ketinggian tempat yaitu ± 780 mdpl. Percobaan dilakukan dengan menggunakan Rancangan Acak Kelompok terdiri dari 9 perlakuan dan diulang tiga kali, adapun perlakuannya yaitu : tanpa pupuk fosfor dan tanpa pupuk hayati; 100 kg/ha pupuk fosfor; 5 L/ha pupuk hayati; 100 kg/hapupuk fosfor + 5 L/ha pupuk hayati; 100 kg/ha pupuk fosfor + 8 L/ha pupuk hayati; 100 kg/ha pupuk fosfor + 10 L/ha pupuk hayati; 150 kg/ha pupuk fosfor  + 5 L/ha pupuk hayati; 150 kg/ha pupuk fosfor  + 8 L/ha pupuk hayati dan 150 kg/ha pupuk fosfor  + 10 L/ha pupuk hayati. Hasil percobaan menunjukkan bahwa kombinasi pupuk fosfor 150 kg/ha + pupuk hayati 10 L/ha memberikan pengaruh nyata terhadap tinggi tanaman dan jumlah bintil akar, namun tidak memberikan pengaruh terhadap tinggi tanaman, bobot kering tanaman, indeks luas daun, jumlah biji per tanaman, bobot biji per tanaman dan indeks panen.Kata Kunci: kedelai, pupuk hayati, inceptisols  Abstract. Soybeans are one of the plants that require large amounts of phosphorus. The availability of P is a major limiting factor in its growth and production. Phosphorus is not widely available for plants, so it requires biological fertilizers that contain microorganisms to dissolve phosphorus. This study aims to obtain a dose of compound biofertilizer and P fertilizer that is effective and can provide the best effect on growth, yield components, and yield of Anjasmoro cultivar soybean plants. The research conducted from March to June 2017 at the Ciparanje Experimental Field, Faculty of Agriculture, University of Padjadjaran, with altitude of 780 meters above sea level. Experiment used Randomized block design that consisted of 9 treatments. There were without biological fertilizers and without P fertilizer; 100 kg/ha P fertilizer + 5 L/ha biological fertilizer; 100 kg/ha P fertilizer + 8 L/ha biological fertilizer; 100 kg/ha P fertilizer + 10 L/ha biological fertilizer; 150 kg/ha fertilizer P + 5 L/ha biological fertilizer; P 150 kg/ha fertilizer + 8 L/ha biological fertilizer; 150 kg/ha fertilizer P + 10 L/habiological fertilizer. It was repeated three times. The results showed that a combination of phosphorus fertilizer 150 kg/ha + biological fertilizer 10 L/ha gave were significant effect on plant height and the number of root nodules but it had no effect on plant height, plant dry weight, leaf area index, number of seeds, seed weight, and harvest index.Keywords: soybean, biofertilizer, inceptisols

scholarly journals Fertilization the Omission One Test as Determination Limiting Factors for Maize Biomass (Zea mays L.)

2021 ◽  
Vol 4 (2) ◽  
pp. 94-105
Author(s):  
Koko Tampubolon ◽  
Bagus Fitra Azmi ◽  
Perdana Andriano Tamba ◽  
Ayu Widya Lestari ◽  
Kamaruddin Kamaruddin ◽  
...  
Keyword(s):  
Plant Height ◽  
Leaf Growth ◽  
Block Design ◽  
Relative Yield ◽  
Animal Husbandry ◽  
Dry Weight ◽  
Limiting Factors ◽  
Limiting Factor ◽  
Test Technique ◽  
The Impact

Introduction: The research was aimed to obtain information on the impact of omission one test fertilization as a determination limiting factors for the growth and biomass of maize in variety Bonanza F1. Materials and Methods: The research was located in the experimental field, Faculty of Agriculture and Animal Husbandry, Universitas Tjut Nyak Dhien, Medan from December 2020 until February 2021. The research was applied by Randomized Block Design in non-factorial through fertilization of omission one test that has been converted (urea : SP-36 : KCl = 0.75 : 0.50 : 0.125 g polybag-1). The treatment of this research include P0 = non-fertilization; P1= N+P+K; P2= P+K; P3= N+K; P4= N+P using three replications. The parameters include plant height, leaf growth, total fresh weight, total dry weight, and the percentage of relative yield then processed using ANOVA and continued with DMRT at 5% ± standard error with SPSS v.20 software. Results: Informed that the omission one test technique significantly improved all the characteristics of maize in the variety Bonanza F1. The highest increase in plant height was found in the N+P of 83.65%, meanwhile, the highest leaf and biomass growth characters were found in N+P+K, ranged of 50.00 to 177.81% and 487.60 to 507.37%, respectively. It was obtained that the limiting factor for the maize growth in variety Bonanza F1 was found in the un-fertilization of nitrogen.

scholarly journals Pengaruh pupuk hayati dan pengapuran terhadap produktivitas kedelai di tanah Inceptisol Jatinangor

Kultivasi ◽  
2018 ◽  
Vol 17 (2) ◽  
Author(s):  
Aep Wawan Irwan ◽  
Tati Nurmala
Keyword(s):  
Harvest Index ◽  
Root Nodule ◽  
Block Design ◽  
Dry Weight ◽  
Area Index ◽  
Randomized Block Design ◽  
Agricultural Faculty ◽  
Lime Application ◽  
Biological Fertilizer ◽  
Number Of Seeds

ABSTRAK Kedelai merupakan tanaman pangan dengan kandungan protein tinggi sebagai bahan baku utama berbagai makanan, sehingga kebutuhan kedelai di Indonesia selalu tinggi. Hasil kedelai dapat ditingkatkan melalui aplikasi pupuk hayati dan pengapuran. Penelitian ini dilaksanakan di Kebun Percobaan Fakultas Pertanian Universitas Padjadjaran, Jatinangor, Sumedang  pada ordo tanah Inseptisol. Penelitian dilakukan dari Maret 2017 sampai Juni 2017. Rancangan percobaannya adalah Rancangan Acak Kelompok, terdiri dari sembilan perlakuan, yaitu tanpa pupuk hayati dan tanpa pengapuran (kontrol); pupuk hayati 5 liter/ha + tanpa pengapuran; pupuk hayati 8 liter/ha + tanpa pengapuran; tanpa pupuk hayati +  pengapuran 140 kg/ha; pupuk hayati 5 liter/ha +  pengapuran 140 kg/ha; pupuk hayati 8 liter/ha +  pengapuran 140 kg/ha; tanpa pupuk hayati +  pengapuran 200 kg/ha; pupuk hayati 5 liter/ha +  pengapuran 200 kg/ha; dan pupuk hayati 8 liter/ha +  pengapuran 200 kg/ha. Semua perlakuan diulang 3 kali. Hasil percobaannya yaitu aplikasi pupuk hayati dan pengapuran tidak menunjukkan berpengaruh nyata terhadap jumlah polong, jumlah biji, jumlah bunga, bobot kering tanaman, bintil akar efektif, Indeks Luas Daun (ILD), bobot biji, Indeks Panen dan bobot 100 butir, namun berpengaruh nyata pada pengamatan tinggi tanaman serta jumlah cabang produktif. Hasil panen tertinggi mencapai 36,86 g/tanaman atau sekitar 1,1 ton/ha.Kata kunci : kedelai, pengapuran, pupuk hayati, inceptisols. ABSTRACT Soybean is a food plant with high vegetable protein content,  is always lack of demand. Its yield can be improved by biofertilizer and lime application. This research was conducted at Experimental Field of Agricultural Faculty of Padjadjaran University, Jatinangor, Sumedang, on Inceptisols, from March 2017 to June 2017. It used Randomized Block Design, nine treatments and three replications, as follows: without biological fertilizer and without liming (control); biological fertilizer 5 liters / ha + without liming; biological fertilizer 8 liters / ha + without liming; without biological fertilizer + liming 140 kg / ha; biological fertilizer 5 liters / ha + liming 140 kg / ha; biological fertilizer 8 liters / ha + liming 140 kg / ha; without biological fertilizer + liming 200 kg / ha; biological fertilizer 5 liters / ha + liming 200 kg / ha; and biological fertilizer 8 liters / ha + liming 200 kg / ha. The results showed that there were no significant effect on the number of pods, the number of seeds, the number of flowers, the dry weight of the plant, the effective root nodule, leaf area index (ILD), yield, harvest index, and 100 grain weight, but there were significant effect on plant height and number of productive branches. The best yield reached 36.86 g / plant or about 1.1 tons / ha.Key words : soybean, liming, biological fertilizer, inceptisols.

scholarly journals Inokulasi Rhizobium dan Populasi Tanaman terhadap Pertumbuhan dan Hasil Kedelai pada Sistem Tanpa Olah Tanah

2019 ◽  
Vol 3 (2) ◽  
pp. 80
Author(s):  
Aldhera Nanda Augusta ◽  
Supriyono Supriyono ◽  
Sri Nyoto
Keyword(s):  
Block Design ◽  
Dry Weight ◽  
Growth And Yield ◽  
Index Number ◽  
N Fixation ◽  
Area Index ◽  
Plant Weight ◽  
Rhizobium Inoculation ◽  
Number Of Leaves ◽  
Pod Number

One of the factors of less soybean productivity of in Indonesia is caused by the N fixation. It can decrease the growth and the yield of soybean. One of the methods to overcome the N fixation is by rhizobium inoculation. The aim of this research was to observe the effects of rhizobium inoculation dosage and the number of seed per hole (population) to the growth and yield of soybean. The method used was Split Plot Randomized Completely Block Design (RCBD). The treatments were type of inoculant rhizobium dosage: without treatment, 3 and 6 g kg<sup>-1</sup> as well as the number of plants, 2 and 3 on planting pit. The result showed that the lowest plant height was in soybean without inoculated by rhizobium and 3 plants per planting pit. The lowest branches number was three plants per planting pit when compared than 2 plants on planting pit. Rhizobium inoculation was not significant to affect the number of leaves, number of branches, leaf area index, number of beans per pod, number of pods per plant, weight of 100 seeds, fresh weight, dry weight and yield.

scholarly journals Influence of Sowing Date on Growth and Yield Components of Sunflower (Helianthus Annuus L.) in Semi-Arid Zone

2019 ◽  
Vol 2 (2) ◽  
pp. 36-42
Author(s):  
Hilwa, D. Abu Anga ◽  
Wael A. Marajan ◽  
Abu backer H. Mohammed ◽  
Baha Eldin M Idris
Keyword(s):  
Plant Height ◽  
Yield Components ◽  
Arid Zone ◽  
Block Design ◽  
Dry Weight ◽  
Sowing Date ◽  
Growth And Yield ◽  
Area Index ◽  
Head Diameter ◽  
Semi Arid

The main objective of this study was to quantify the influence of sowing date on growth and yield components of hybrid sunflower (Hysun33) cultivar in semi-arid zone. This experiment was conducted during the seasons 2014/2015-2015/2016 at the farm of the College of Agricultural Studies, Sudan University of Science and Technology, Shambat, Khartoum- Sudan. The experiment was arranged in randomized complete block design (RCBD) with four replications and three treatments. Different parameters were considered including plant height, leaf area index (LAI), filled sees number/head, head diameter, dry weight and yield components. The collected data were statistically analyzed. The results revealed that crop sown in May and July showed significant increase in plant height, LAI, head diameter, dry weight, field seed number/head, weight of 100 seeds; yield, and yield; compared to crop sown in March. However, crop sown in the second season showed an increase in growth and yield components compared to the crop of the first season.

Effect of Rhizobium inoculation to nodulation and growth of soybean [Glycine max (L.) Merrill] Germplasm

2018 ◽  
Author(s):  
Sakka Samudin ◽  
Heru Kuswantoro
Keyword(s):  
Plant Height ◽  
Root Length ◽  
Root Nodules ◽  
Dry Weight ◽  
Limiting Factor ◽  
Rhizobium Inoculation ◽  
Root Dry Weight ◽  
Shoot Dry Weight ◽  
Glycine Max L ◽  
Inoculation Treatment

Nitrogen is an important macronutrient mineral that is needed in the largest amount by the plant and is the main limiting factor for plant development. Rhizobium is a group of bacteria capable of providing nutrients for soybean crops. When symbiotic with legume crops, this group of bacteria is able to infect plant roots and form root nodules. The study aimed to investigate the effect of Rhizobium on nodulation and growth of some soybean germplasm. The results showed no interaction between the inoculation treatment and the genotype. The significant effect of inoculation was shown by the number of nodules, nodule dry weight, root length, and root dry weight. Inoculation did not affect plant height and shoot dry weight. These traits were more influenced by genetic factors. In the condition without inoculation, the root length was higher but the root dry weight was lower. Plant height differed between the genotypes. KPT5 and KPT6 showed the highest plant height than any other genotypes. Both genotypes also had the highest shoot dry weight. The highest shoot dry weight was also achieved by KPT4.

scholarly journals Pengaruh Aplikasi Biostimulan Terhadap Pertumbuhan dan Produksi Tanaman Sawi (Brassica juncea L.)

2018 ◽  
Vol 14 (1) ◽  
pp. 41-46
Author(s):  
Rismawaty Saban ◽  
Henry Kesaulya ◽  
Jeanne I Nendissa
Keyword(s):  
Plant Height ◽  
Block Design ◽  
Growth Yield ◽  
Dry Weight ◽  
Growth And Yield ◽  
Root Weight ◽  
Single Factor ◽  
Fresh Weight ◽  
Randomized Block Design ◽  
Mustard Plant

This study aimed to determine the effect of different biostimulant applications (solid and liquid) on the growth and yield of mustard plants. This study used a single factor Randomized Block Design (RBD), consisting of solid or liquid biostimulant treatment, each has twelve levels, i.e. K0 = without biostimulant, K1 = NPK 1 g per plant, solid and liquid biostimulant each consisting of 10 treatments = B1, B2, B3, B4, B5, B6, B7, B8, B9, B10. Solid biostimulant was given at 2.5 g per plant and liquid biostimulant at 10 ml per plant. The results showed that liquid biostimulant gave a significant effect on plant height, crop fresh weight, and crop dry weight; whereas solid biostimulant gave a very significant effect on entire weight, i.e. fresh weight of mustard plant, fresh root weight, and crop dry weight. The best treatment for liquid biostimulant was B1 treatment; whereas for the solid biostimulant was B7 treatment. Keywords: biostimulant, mustard, growth, yield   ABSTRAK Penelitian ini bertujuan untuk mengetahui pengaruh aplikasi biostimulan yang berbeda (biostimulan padat dan cair) terhadap pertumbuhan dan produksi tanaman sawi. Penelitian ini menggunakan rancangan acak kelompok faktor tunggal yang terdiri dari perlakuan Biostimulan (padat dan cair) yang masing-masing perlakuan terdapat dua belas taraf (P): K0 = tanpa biostimulan, K1 = NPK 1 g/tan, Biostimulan padat dan cair masing-masing terdiri dari 10 perlakuan = B1, B2, B3, B4, B5, B6, B7, B8, B9, B10. Biostimulan padat 2.5 g/tan dan biostimulan cair 10 ml/tan. Hasil penelitian menunjukkan bahwa biostimulan cair memberikan pengaruh yang nyata terhadap tinggi tanaman sawi, berat segar tanaman, dan berat kering tanaman, sedangkan biostimulan padat memberikan pengaruh yang sangat nyata terhadap semua bobot berat tanaman sawi yaitu berat segar tanaman, berat segar akar, dan berat kering tanaman. Perlakuan terbaik untuk biostimulan cair adalah perlakuan B1, sedangkan untuk biostimulan padat perlakuan yang terbaik adalah perlakuan B7. Kata kunci: biostimulan, sawi, pertumbuhan, produksi

scholarly journals EFEKTIFITAS PENGENDALIAN GULMA DAN PEMBERIAN PUPUK KANDANG AYAM TERHADAP PERTUMBUHAN DAN HASIL BAWANG MERAH (Allium ascalonicum, L) PADA TANAH MASAM

2019 ◽  
Vol 4 (1) ◽  
Author(s):  
Gusni Yelni
Keyword(s):  
Plant Height ◽  
Weed Control ◽  
Acid Soil ◽  
Block Design ◽  
Organic Fertilizer ◽  
Growth Yield ◽  
Dry Weight ◽  
Chicken Manure ◽  
Number Of Children ◽  
Randomized Block Design

ABSTRACT This study aims to determine the effectiveness of Weed Weeding with different weeding times and to determine the effectiveness of the use of chicken manure on the growth and production of shallots (Allium ascolanicum, L). This experiment used factorial Randomized Block Design (RBD). The first factor 5 treatment consists of; PG0 (without weeding weeds), G1 (weed 1 time age, 28 days), G2 (weed 2 times age 21, and 42 hst), G3 (weed 3 times  age, 14, 28, and 42 hst), G3 (3 times age, 14, 28, and 42 days), and G4 (4 times age 7, 14, 21 and 28 days). The second factor 3 treatment consists of; P1 (10 ton ha-1), P2 (20 ton ha-1), and P3 (40 ton ha-1) and 3 groups. The results showed that the treatment of weed weeding and administration of chicken manure organic fertilizer had a significant effect on plant height, number of children, number of plants, fresh weight of plants, and dry weight per plot. Weed control that was effective in increasing the growth of the number of tillers and onion production was, when weed control was twice, at 28 and 42 HST. The dosage of 40 ton h-1 organic fertilizer for chicken coop is quite effective to help the growth of plant height, number of leaves and increase the weight of red onion bulbs, and improve acid soil pH conditions Keywords: Onion Varieties Thailand, Weeding Time, Weed, Growth, Yield, Chicken Manure, Growth and Result of Keywords: ABSTRAKPenelitian ini bertujuan untuk mengetahui tingkat efetifitas Penyiangan Gulma dengan waktu penyiangan berbeda dan  untuk mengetahui efektifitas pengunaan  pupuk kandang ayam terhadap pertumbuhan dan produksi tanaman bawang merah (Allium ascolanicum, L). Percobaan ini menggunakan Rancangan Acak Kelompok (RAK) faktorial. Faktor pertama  5 perlakuan terdiri atas; PG0 (tanpa penyiangan gulma), G1  (disiang 1 kali, yaitu pada umur ; 28 hst),  G2  (disiang 2 kali, yaitu pada umur ; 21, dan 42 hst), G3 (disiang 3 kali, yaitu pada umur ; 14, 28, dan 42 hst), G3 (disiang 3 kali, yaitu pada umur ; 14, 28, dan 42 hst), dan G4 (disiang 4 kali, yaitu pada umur ; 7, 14, 21, dan 28 hst).  .Faktor kedua 3 perlakuan terdiri atas; P1 (10 ton ha-1), P2 (20 ton ha-1), dan P3 (40 ton ha-1) dan 3 kelompok.  Hasil penelitian menunjukan bahwa perlakuan waktu penyiangan gulma dan pemberian dosis pupuk organik kandang ayam berpengaruh nyata terhadap tinggi tanaman, jumlah anakkan, jumlah duan, berat segar perumpun,  dan berat kering per petak. Pengendalian gulma yang efektif  dalam meningkatkan pertumbuhan jumlah anakan dan produksi tanaman bawang merah adalah, waktu penngendalian gulma sebanayk 2 kali yaitu pada umur 28 dan 42 HST. Dosis  40 ton h-1  pupuk organik kandang ayam cukup efektif membantu pertumbuhan tinggi tanaman, jumlah daun dan meningkatkan bobot umbi tanaman bawang merah, serta memperbaiki kondisi pH tanah masam Kata Kunci : Bawang Merah Varietas Thailand, Waktu penyiangan, gulma, pertumbuhan, hasil,  Pupuk Kandang Ayam, Pertumbuhan dan Hasil Kata Kunci:

scholarly journals APPLICATION OF FERTILIZATION TIME AND NITROGEN DOSAGE ON PEANUT PLANT (Arachis hypogaea L.)

2017 ◽  
Vol 1 (1) ◽  
pp. 27
Author(s):  
Anak Agung Sagung Putri Risa Andriani ◽  
I Nengah Suaria ◽  
I Wayan Yudiana ◽  
Yohanes Parlindungan Situmeang ◽  
Anak Agung Ngurah Mayun Wirajaya ◽  
...  
Keyword(s):  
Leaf Area ◽  
Plant Height ◽  
Block Design ◽  
Dry Weight ◽  
Growth And Yield ◽  
Leaf Number ◽  
Optimum Dose ◽  
Area Index ◽  
Randomized Block Design ◽  
Arachis Hypogaea L

Abstract This study aims to determine the effect of treatment of fertilization time and dosage of nitrogen to the growth and yield of peanut plants. This experiment is a two-factor experiment with incomplete randomized block design. The first factor is the time (S) of fertilizer consisting of three levels: During planting (S0), 15 days after planting (S1), 30 days after planting (S2), The second factor is the dosage of Nitrogen (N) fertilizer consisting of three levels: 25 kg/ha (N1), 50 kg/ha (N2). The results showed that treatment of fertilization time and a dose of nitrogen showed no significant effect on plant height, maximum leaf number, leaf area index, the total pod containing, total void pod, total pod number, oven dry weight of oven plants, and harvesting index. The interaction of nitrogen dose with a time of fertilization gave a very real effect to most observed variables except for maximum plant height, maximum leaf number, leaf area, harvest index that is not significant. The high dry weight of seed oven per plant was obtained at the fertilizer interaction treatment at 15 days after planting and the dose of nitrogen 25 kg/ha was 30.33 g and or increased by 152.75% and when compared with the control of 12.00 g. From a result of regression analysis got an optimum dose of nitrogen fertilizer that is 34.15 kg/ha with the dry weight of oven seeds per plant maximum 26.73 g. Keywords: Fertilization time, nitrogen dosage, peanut result

scholarly journals Study of the Effect of Various Organics, Chemicals, Growth Regulators Treatments on Growth, Yield and Yield Attributing Traits in Radish (Raphanus sativus L.)

2021 ◽  
pp. 91-96
Author(s):  
J. Naga Pavan Kumar Reddy ◽  
Abhinav Dayal ◽  
Prashant Kumar Rai ◽  
Neha Thomas
Keyword(s):  
Plant Height ◽  
Growth Regulators ◽  
Raphanus Sativus ◽  
Block Design ◽  
Uttar Pradesh ◽  
Growth Yield ◽  
Dry Weight ◽  
Growth And Yield ◽  
Organic Growth ◽  
Randomized Block Design

University of Agriculture Technology and Science, Prayagraj, Uttar Pradesh during the rabi season of 2020-2021. To investigate the Study on the Effect of various organic, growth regulators & chemicals treatments on growth, yield, and yield attributing traits in Radish (Raphanus sativus). The experiment was laid out in Randomized Block Design (RBD) with Thirteen treatments and three replications. The treatments consist of FYM, NAA, GA3 KNo3, ZnSo4, KCl were subjected to study the growth, and yield parameters were recorded. The maximum field emergence percentage (93.30), plant height 30 das (23.50) plant height 60 das (89.57), plant height 90 das (148.23), days to 50% flowering (52.67), number of pods per plant (110.03), dry weight of plant (40.56), seed yield per plant (5.4), biological yield (343.3) harvest index (44.23) were observed in T7 (NAA). Whereas minimum was recorded in T0 (Control) (81.30, 21.60cm, 78.13cm, 139.83cm, 56.20%, 102.33, 32.20, 1.4, 132.20, 33.10).

scholarly journals Respon Pertumbuhan dan Produksi Jintan Hitam (Nigella sativa L.) dengan Pemupukan Nitrogen dan Fosfor

2016 ◽  
Vol 43 (3) ◽  
pp. 227
Author(s):  
Rudi Suryadi ◽  
Munif Ghulamahdi ◽  
Ani Kurniawati
Keyword(s):  
Medicinal Plant ◽  
Leaf Area ◽  
Nigella Sativa ◽  
Block Design ◽  
Dry Weight ◽  
Branch Number ◽  
Area Index ◽  
Black Cumin ◽  
P Fertilizer ◽  
P Fertilizers

<p>ABSTRACT</p><p>Black cumin (Nigella sativa L.) is a native medicinal plant to subtropical West Asia and the Mediterranean regions. So far, information regarding black cumin fertilization is still limited. The objectives of this study was to obtain the optimum rate of N and P fertilizer in order to promote the growth and production of black cumin under tropical climates. This research was conducted at Manoko Experimental Station, Lembang, West Java from October 2012 to January 2013. The research was arranged in randomized complete block design with two factors and three replications. The first factor was four rates of N fertilizer (0, 40, 80, 120 kg N ha-1), and the second factor was four rates of P fertilizer (0, 40, 80, 120 kg P2O5 ha-1). The results showed that application of N and P fertilizers increased plant height, leaf number, branch number, leaf area, leaf area index, relative growth rate, net assimilation rate, plant dry weight, number of capsule per plant, number of seed per capsule, seed weight per plant, and weight of 1,000 seeds. Moreover, growth and production of black cumin still increased at the highest rates of N and P fertilizers, therefore, it is necessary to study for N and K at higher rates in order to obtain optimum production rate.</p><p>Keywords: medicinal plant, rate of fertilizer, tropical</p>

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