scholarly journals Effect of a Pseudomonas fluorescens-based Biofertilizer on Sweet Potato Yield Components

2021 ◽  
Vol 9 (2) ◽  
Author(s):  
Alexander Santana-Fernández ◽  
Yoel Beovides-García ◽  
Jaime Enrique Simó-González ◽  
María Cristina Pérez-Peñaranda ◽  
Jorge López-Torres ◽  
...  
Keyword(s):  
Field Experiment ◽  
Pseudomonas Fluorescens ◽  
Sweet Potato ◽  
Yield Components ◽  
Ipomoea Batatas ◽  
Block Design ◽  
Mineral Fertilizer ◽  
Potato Yield ◽  
The Other ◽  
Randomized Block Design

A field experiment was conducted to study the effect of a Pseudomonas fluorescens-based biofertilizer on sweet potato (Ipomoea batatas (L) Lam) yield. The application was by immersion of cuttings before sowing for 0, 5, 10 and 15 minutes with combination doses of 0, 50 and 100% of NPK mineral fertilizer in a randomized block design with three replications (12 treatments-combinations). During the harvest (130 days after planting), some measurements related to yield components were recorded on ten randomly selected plants from each plot. All treatments with Pseudomonas’ immersion showed a positive productive response. With 100% NPK and the immersion in the biofertilizer for 15 min showed the highest yield (56.09 tha-1), followed by the other treatments with 100% NPK and without statistical differences among them. The treatment with 50% NPK and the immersion in Pseudomonas for 15 min (49.58 tha-1) had no statistical differences with the control variant (100% NPK, 51.60 tha-1). Based on the results, it can be concluded that this biofertilizer could be an appropriate alternative to increase the sweet potato yield, saving the 50% of the current quantity of the recommended mineral fertilizer, through a more friendly environmental techniques to promote a sustainable, efficient and productive agriculture.

scholarly journals Seleção de genótipos de batata-doce quanto à eficiência ao uso do fósforo em solos da região de cerrado

2013 ◽  
Vol 4 (4) ◽  
pp. 356-364
Author(s):  
Luziano Lopes Da Silva ◽  
Márcio Antônio Da Silveira ◽  
Rodrigo Ribeiro Fidelis ◽  
Rodrigo de Castro Tavares ◽  
Valéria Gomes Momenté ◽  
...  
Keyword(s):  
Experimental Design ◽  
Sweet Potato ◽  
Ipomoea Batatas ◽  
Block Design ◽  
Tuberous Root ◽  
Phosphorus Fertilization ◽  
Germplasm Bank ◽  
Randomized Block Design ◽  
The Family ◽  
Selection Of

The sweet potato (Ipomoea batatas (l.) Lam.) Lam) is a plant that produces tuberous root belonging to the family convolvulácea explored in practically all states of Brazil. The objective of this work was to select genotypes of the sweet potato as the efficiency of phosphorus use in cerrado soils with high and low availability of this nutrient. Were evaluated nine genotypes of sweet potato coming from the germplasm bank from the Federal University of the Tocantins, Brazil. The experimental design was in randomized block design with three replications being nine genotypes grown in two environments with low and high phosphorus availability, using doses of phosphorus fertilization from 20 and 120 kg ha-1 P2O5, applied at planting. To select genotypes suitable for environments proposed was used methodology for selection of the efficient use and response to phosphorus fertilization (efficiency and response). Genotype Amanda was classified as efficient and responsive, Barbara, Julia, Marcela and Carolina Vitoria as efficient, but not responsive and Livia, Duda, Ana Clara and Beatriz were classified as non-efficient, responsive but the absorption and utilization of phosphorus.

scholarly journals Preliminary Evaluation of Different Combinations of Inorganic and Humate Based Fertilizer on Yield of Potato (Solanum tuberosum L.) in Malawi

2020 ◽  
pp. 25-33
Author(s):  
Kennedy Masamba ◽  
Austin T. Phiri ◽  
Obed Mwenye ◽  
Margaret Chiipanthenga ◽  
Felix Chipojola ◽  
...  
Keyword(s):  
Yield Components ◽  
Tuber Yield ◽  
Crop Yields ◽  
Block Design ◽  
Mineral Fertilizer ◽  
Potato Yield ◽  
Preliminary Evaluation ◽  
Combined Application ◽  
Significant Difference ◽  
Yield And Yield Components

In Malawi the demand of the use of mineral acidifying fertilizer by farmers for sustenance of high crop yields is increasing. The soaring demand is a pointer to the loss of humic substances in the soil and the resultant poor soil health. There is potential however to reduce the amount of mineral fertilizer used by the farmers and retain the applied nutrients within the plants rooting zone for increased use efficiency and productivity. This could be achieved through the combined application of humate based fertilizers with mineral fertilizer. Therefore, an experiment was conducted to evaluate the effect of different rates of NPK and humate based fertilizer (HBF) combinations on potato yield and yield components at Tsangano, Bembeke and Dwale Extension Planning Area (EPA) in the 2016/2017 cropping season. Ten treatments were laid out in a randomized complete block design (RCBD). Baseline soil data were collected and subjected to standard laboratory analytical procedure. Agronomic data collected in the experiment were analyzed in Genstat Discovery Edition 4 and were subjected to analysis of variance (ANOVA) at 95% level of confidence. The means were separated by the least significant difference (LSD0.05). Laboratory analysis showed that soils were strongly acid at the three sites with low amount of N, P, K except for Dwale EPA which had high P and medium content of K. Furthermore, results showed that different NPK and HBF combination significantly influenced potato tuber yield and yield components at the three sites. The recommended fertilizer rate of NPK 8:18:15 + 6S at 250 kg ha-1 + 60 kg N ha-1 produced the highest tuber yield at Tsangano (20,729 kg ha-1) and Bembeke (5,189 kg ha-1). At Dwale EPA, application of NPK 8:18:15 + 6S at 250 kg ha-1 produced the highest yield (13,956 kg ha-1). Nevertheless, different combinations of NPK and HBF fertilizer (Treatments 7, 8, 9 and 10) also gave comparably high yields and high number of big tubers. Therefore, the combined application of mineral fertilizer and humate based fertilizer potentially could increase potato yield in Malawi, sustainably. More studies however are required in order to confirm the results.

scholarly journals The Growth and Production of Three Sweet Potato Varieties as Affected by Dosage of Potassium Fertlizer on the Ultisols of Bengkulu Province

2021 ◽  
Vol 4 (2) ◽  
pp. 34-38
Author(s):  
Taufiq Al-Qodri ◽  
Bambang Gonggo Murcitro ◽  
Alnoopri Alnopri ◽  
Prasetyo Prasetyo
Keyword(s):  
Sweet Potato ◽  
Significant Interaction ◽  
Block Design ◽  
The Other ◽  
Tuber Weight ◽  
Potassium Fertilizer ◽  
Correct Dose ◽  
Randomized Block Design ◽  
The Right ◽  
Number Of Branches

This study aims to study the interaction between varieties and the correct dose of potassium fertilizer, determine the right dose of potassium fertilizer and the appropriate variety of sweet potato in Ultisol. In this study, the research design used was a completely randomized block design (RAKL) with two (2) factors with three replications. The first factor is three varieties of sweet potato, namely Cilembu, Atin 3, and Beta 1. The second factor is the dose of KCl fertilizer which consists of 4 levels of dosage, namely 0 kg ha-1, 150 kg ha-1, 300 kg ha-1, and 450 kg ha-1 KCl fertilizer. The results showed no significant interaction between the dose of KCl fertilizer and the three varieties of sweet potato. The Antin 3 variety produced the most extended tendril length compared to the other two varieties. The lowest number of branches was produced by Beta 1 variety. The Cilembu variety produced the most significant tuber weight per plot and estimated weight per plot. The Cilembu variety is proven to have the highest level of sweetness. 

scholarly journals Teknik Penggunaan Ajir pada Beberapa Varietas Ubi Jalar (Ipomoea batatas L.) di Dataran Tinggi Papua

2020 ◽  
Vol 16 (1) ◽  
pp. 77-87
Author(s):  
Alberth Soplanit ◽  
Merlin K Rumbarar ◽  
Siska Tirajoh ◽  
Nur E Suminarti
Keyword(s):  
Solar Radiation ◽  
Sweet Potato ◽  
Potato Variety ◽  
Ipomoea Batatas ◽  
High Efficiency ◽  
Block Design ◽  
Dry Weight ◽  
Radiation Energy ◽  
Randomized Block Design ◽  
Environment Experiment

This study aimed to obtain high efficiency in the use of solar radiation energy by combining varieties and stake angle (against horizontal) in sweet potato cultivation in the Papua highlands. The experiment was conducted on entisol soil type at 1560 m above sea level from April to September 2016. The environment experiment was arranged in a factorial Randomized Block Design with three replications. Factor A (variety) consisted of three varieties, i.e. Siate (local), Papua Sollosa, and Cangkuang; factor B (stake angle) consisted of four angles i.e. without stakes, 45°, 60°, and 90°. Specific Leaf Area decreased following an increase in stake angle levels for all varieties. The experiment reveals that Cangkuang with a 90° stake angle was higher on tuber dry weight (248.7 g per plant). The highest tuber yields were achieved by Cangkuang variety at 90° and 60° stakes angle with production 31.53 ton per ha and 28.86 ton per ha, respectively. Under conditions of abiotic stress due to the high level of cloud shade in the Papua highlands, it is recommended to use Cangkuang sweet potato variety or varieties with wide leaves, combined with the use of stakes at 90° and 60° angles. Keywords: Stake, solar radiation energy, sweet potato variety, Papua highland   ABSTRAK Penelitian ini bertujuan untuk mendapatkan efisiensi penggunaan energi radiasi matahari yang tinggi dengan mengkombinasikan varietas dan kemiringan (sudut terhadap horizontal) ajir pada budidaya tanaman ubi jalar di dataran tinggi Papua. Penelitian berlangsung pada tanah entisol, ketinggian 1560 m di atas permukaan laut dari bulan April - September 2016. Rancangan lingkungan adalah faktorial yang disusun dalam Rancangan Acak Kelompok dengan tiga ulangan. Faktor A (varietas) terdiri dari tiga varietas, yakni Siate (lokal), Papua Sollosa dan Cangkuang; faktor B (sudut kemiringan ajir) terdiri dari empat sudut yakni tanpa ajir, kemiringan ajir 45°, 60° dan 90°. Hasil penelitian menunjukkan bahwa luas daun spesifik (LDS) menurun mengikuti peningkatan kemiringan ajir pada semua varietas, dengan bobot kering umbi tertinggi 248,7 g per tanaman dihasilkan oleh varietas Cangkuang pada kemiringan ajir 90°. Hasil umbi tertinggi secara berturut-turut diperoleh oleh varietas Cangkuang pada kemiringan ajir 90° dan 60° masing-masing 31,53 ton per ha dan 28,86 ton per ha. Pada kondisi cekaman abiotik akibat tingkat keawanan tinggi di dataran tinggi Papua, dianjurkan untuk menanam varietas ubi jalar Cangkuang atau varietas dengan karakter berdaun lebar dikombinasikan dengan penggunaan ajir dengan kemiringan 90° dan 60°. Kata kunci: Ajir, energi radiasi matahari, varietas ubi jalar, dataran tinggi Papua

scholarly journals Daya hasil dan indeks panen ubi jalar unggul baru berdaging kuning (Ipomoea batatas L. (Lam.))

Jurnal Agro ◽  
10.15575/5704 ◽  
2020 ◽  
Vol 7 (1) ◽  
pp. 24-31
Author(s):  
Agung Karuniawan ◽  
Reviana Aulia ◽  
Haris MAulana ◽  
Debby Ustari ◽  
Neni Rostini
Keyword(s):  
Sweet Potato ◽  
Harvest Index ◽  
Ipomoea Batatas ◽  
Block Design ◽  
Total Weight ◽  
High Yield ◽  
Tuber Weight ◽  
Randomized Block Design ◽  
Superior Genotypes ◽  
Supporting Material

Estimasi daya hasil dan indeks panen dalam pemuliaan tanaman dibutuhkan untuk menyeleksi genotip ubi jalar. Genotip ubi jalar terseleksi yang berdaya hasil tinggi dapat digunakan sebagai bahan pendukung diversifikasi pangan. Tujuan dari penelitian ini adalah untuk memperoleh genotip ubi jalar berdaya hasil tinggi serta memiliki indeks panen tinggi. Penelitian dilaksanakan di Kebun Percobaan Fakultas Pertanian Universitas Padjadjaran Kabupaten Sumedang, Jawa Barat dari bulan November 2018 sampai April 2019. Penelitian ini menggunakan delapan genotip ubi jalar dan tiga genotip pembanding (Ac Putih, Kidal, dan Rancing). Metode yang digunakan adalah rancangan acak kelompok (RAK) dengan 11 perlakuan yang diulang sebanyak tiga kali. Hasil penelitian menunjukkan bahwa jumlah ubi per tanaman, jumlah ubi total, jumlah ubi ekonomis, bobot ubi per tanaman, bobot ubi total dan bobot ubi ekonomis menunjukan perbedaan yang nyata. Terdapat tujuh genotip yang berdaya hasil tinggi yaitu MZ 332, PR 91 (838), Awachy 4, KMDK, IND 38 (48), IND 8 (11), IND 264. Terdapat empat genotip ubi jalar unggul baru yang memiliki hasil indeks panen > 1 yaitu, Mz 332, PR 91(838), KMDK, dan IND 8(11).  ABSTRACT Estimation of yield and harvest index on sweet potato are needed to select new superior genotypes of sweet potato in the breeding program. Selected sweet potato genotypes with high yield can be used as supporting material for food diversification. The purpose of this study was to obtain new superior genotypes of yellow-fleshed sweet potato with high yield and high harvest index. The study was conducted in the Experimental field, Faculty of Agriculture, Universitas Padjadjaran, Sumedang Regency, West Java from November 2018 to April 2019. This study used eight sweet potato genotypes as treatment and three genotypes as check i.e. Ac Putih, Kidal and Rancing. The method used was randomized block design (RBD) with 11 treatments repeated three times. The results showed that the numbers of tuber per plant, numbers of tuber per plot, numbers of economic tuber, weight of tuber per plant, total weight per plot, weight of economic tubers were significantly different. There are seven genotypes with the high yield, i.e. MZ 332, PR 91 (838), Awachy 4, KMDK, IND 38 (48), IND 8 (11), IND 264. Four genotypes with harvest index > 1 i.e. Mz 332, PR 91 (838), KMDK, and IND 8 (11).

scholarly journals Performance of different rice hybrids in Krishna western delta

2020 ◽  
Vol 15 (3) ◽  
pp. 249-251
Author(s):  
K. Anny Mrudhula ◽  
B. Krishna Veni
Keyword(s):  
Field Experiment ◽  
Grain Yield ◽  
Plant Height ◽  
Yield Components ◽  
Growth Parameters ◽  
Block Design ◽  
Research Unit ◽  
Panicle Length ◽  
Straw Yield ◽  
Randomized Block Design

A field experiment was conducted at Rice Research Unit, Bapatla during Kharif, 2013 to observe the performance of hybrids under Krishna Western Delta. The experiment was laid out in Randomized Block Design with four replications. The treatments are 5 rice hybrids like DRRH2, DRRH3, KRH2, PA6201 and CRHR32. The results of study revealed that the hybrids exhibited superiority in respect of different growth parameters like plant height, number of tillers per hill, panicle length grain yield and straw yield. Among various tested rice hybrids, maximum grain yield (6408 kg/ha) and straw yield (7178 kg/ha) were recorded in PA6201 which might be due to better growth parameters and yield components of hybrids.

scholarly journals PENGARUH PENAMBAHAN TOP SOIL INCEPTISOL DAN KOMPOS PADA TAILING AMALGAMASI TERHADAP PANJANG SULUR, DIAMETER SULUR DAN JUMLAH CABANG TANAMAN UBI JALAR (Ipomoea batatas L.)

2020 ◽  
Vol 8 (1) ◽  
pp. 161-168
Author(s):  
Indra Herliana ◽  
Pujawati Suryatmana ◽  
Reginawanti Hindersah ◽  
Rhazista Noviardi
Keyword(s):  
Organic Matter ◽  
Sweet Potato ◽  
Ipomoea Batatas ◽  
Block Design ◽  
Sweet Potatoes ◽  
Vegetative Phase ◽  
Randomized Block Design ◽  
Top Soil ◽  
Two Factors ◽  
Number Of Branches

Tailings are waste generated from the processing of gold ore. The tailings in Kertajaya Village, Sukabumi are generally dumped into a pond or garden which is then used by the community to grow crops. The characteristics of the tailings, which contain low organic matter, microorganism activity, CEC and essential nutrients, make it necessary to improve their condition. This study aimed to determine the effect of adding top soil and compost to the tailings on the growth of sweet potatoes in the vegetative phase. This experiment used a factorial randomized block design with two factors, namely a top soil-tailing ratio of 3 levels (70: 30% w/w; 50: 50% w/w; and 30: 70% w/w) and a compost dose of 4. level (without compost (control); 10 t ha-1; 20 t ha-1; and 30 t ha-1) with 3 replications. The results showed that the combination of the addition of top soil ratios and the dose of compost to the tailings had no effect on the addition of tendrils length, tendril diameter and number of sweet potato branches during the vegetative phase. The addition of 70% top soil independently on the tailings had an effect on the highest increase in tendril length, tendril diameter and number of branches of sweet potato. Meanwhile, the application of compost dosage of 30 t ha-1 had the highest effect on the number of branches of sweet potato.

scholarly journals Keragaman dan Potensi GenKeragaman dan Potensi Genetik Ubi Jalar Lokal Pada Kondisi Partial Submergenceetik Ubi Jalar Lokal Pada Kondisi Partial Submergence

2018 ◽  
Vol 14 (1) ◽  
pp. 1-7
Author(s):  
Helen Hetharie ◽  
Simon H T Raharjo ◽  
Anna Y Wattimena ◽  
Reny Tomasoa ◽  
La Dahamarudin
Keyword(s):  
Leaf Area ◽  
Sweet Potato ◽  
Ipomoea Batatas ◽  
Block Design ◽  
Stem Length ◽  
Tuber Weight ◽  
Area Index ◽  
Randomized Block Design ◽  
Vegetative Characters ◽  
Individual Tuber

Excess ground water above normal due to high rainfall affect the growth and yields of crops. The objectives of the study were to measure the genetic diversity of local sweet potato clones, to obtain characters of vegetative and yield characters that were  responsive against of partial submergence and sweet potato clones that had highest yield components. The method of research was a one-factor experiment involving 21 sweet potato clones using a Completely Randomized Block design with 3 replication. The partial submergence in this study mean that was the lower parts of the plants submerged when the plant were 2 and 3 months old. Data were analyzed with F test, genotype and phenotype variance, and DMRT test. The results show the sweet potato clones have a wide diversities of vegetative and yield characters. Vegetative characters that were positively responsive to partial submergence were the number of green leaves, leaf area per plant, leaf area index, and stem length. Yield characters that were positively responsive to partial submergence were tuber number and tuber length. Some of the clones with the highest production potential were shown through two of the three yields indicators (tubers number, individual tuber weight and tuber weight per plant), i.e. A13, AR15, B9, BSepa-U, BR5, H1 clones and Antin 2 variety.. Keywords: excess water, genotype variance, Ipomoea batatas, Maluku, yield character   ABSTRAK Kelebihan air tanah di atas normal akibat curah hujan yang tinggi mempengaruhi pertumbuhan dan produksi tanaman. Tujuan penelitian untuk mengukur keragaman genetik klon-klon ubi jalar lokal,  serta mendapatkan karakter vegetatif dan karakter hasil yang responsif positif terhadap partial submergence dan klon ubi jalar yang mempunyai komponen hasil tertinggi. Metode penelitian berupa percobaan satu faktor yaitu 21 klon ubi jalar menggunakan rancangan acak lengkap berblok dengan pengulangan tiga kali. Partial submergence  dalam penelitian ini yaitu  bagian bawah dari tanaman terendam air pada umur tanaman 2 dan 3 bulan. Analisis data dengan uji F, ragam genotip dan fenotip, dan uji DMRT. Hasil menunjukkan bahwa klon-klon ubi jalar mempunyai  keragaman luas pada semua karakter vegetatif dan produksi. Karakter vegetatif  yang responsif positif terhadap  partial submergence yaitu jumlah daun hijau, luas daun per tanaman, indeks luas daun dan panjang batang. Karakter produksi yang responsif positif terhadap  partial submergence yaitu jumlah umbi dan panjang umbi. Beberapa klon dengan potensi produksi melalui dua dari tiga indikator produksi (jumlah umbi, bobot per umbi dan bobot umbi segar per tanaman) tertinggi yaitu  A13, A15, B9,  BSepa-U, BR5, H1, dan varietas Antin 2. Kata kunci: Ipomoea batatas, karakter hasil, Maluku, ragam genotip, terendam

scholarly journals KARAKTERISTIK TEPUNG UBI JALAR (Ipomoea batatas L) TERMODIFIKASI SECARA FERMENTASI MENGGUNAKAN KOJI Bacillus subtilis DAN APLIKASINYA PADA PENGOLAHAN PANGAN

2019 ◽  
Vol 6 (1) ◽  
pp. 8
Author(s):  
Hervelly Velly
Keyword(s):  
Bacillus Subtilis ◽  
Sweet Potato ◽  
Wheat Flour ◽  
Ipomoea Batatas ◽  
Block Design ◽  
Cooking Loss ◽  
Potato Flour ◽  
Organoleptic Test ◽  
Randomized Block Design ◽  
Sweet Potato Flour

The aim of this study was obtained ratio of wheat flour and modified sweet potato flour that exactly on dried noodle, sweet bread and biscuits which can accepted by consumer.The experimental Randomized Block Design (RBD) was used in this study with one factor and two times replicated. The factor was recearched as between wheat flour and modified sweet potato flour with leves a0 (100% : 0%), a1 (0% : 100%), a2 (5% : 95%), a3 (10% : 90%), a4 (15% : 85%), a5 (20% : 80%), a6 (25% : 75%), a7 (30% : 70%) and a8 (35% : 65%).The result of study indicated that ratio between wheat flour and modified sweet potato flour was significantly effected on texture, flavour and taste of dried noodle, sweet bread and biscuits.The result of organoleptic test for dried noodle, sweet bread and biscuits obtained the best comparison between wheat flour and modified sweet potato flour of a8 (35% flour and 65% modified sweet potato flour. The results analysis of dried noodle was moisture 6,4039%, starch 29,6665 %, protein 6,2191% and cooking loss 18,7121%.The results analysis of sweet bread was mouisture 24,7525%, starch 32,9982% and protein 9,0174%. and the results anaysis of biscuits was mouisture 2,4390%, starch 4,8007% and protein 3,9785%.

scholarly journals Relationship between photosynthetic pigments and corn production under nitrogen sources

2020 ◽  
Vol 50 ◽  
Author(s):  
Ezequiel Zibetti Fornari ◽  
Lucas Gaviraghi ◽  
Claudir José Basso ◽  
Marcos Vinícius Marques Pinheiro ◽  
André Luis Vian ◽  
...  
Keyword(s):  
Grain Yield ◽  
Photosynthetic Pigments ◽  
Nitrogen Fertilization ◽  
Block Design ◽  
Mineral Fertilizer ◽  
Nitrogen Sources ◽  
The Other ◽  
Plant Nitrogen ◽  
Chlorophyll Contents ◽  
Randomized Block Design

ABSTRACT Nitrogen (N) is a dynamic element in the soil, so new nitrogen fertilization alternatives are required as a way of maximizing its efficiency. Besides, vegetation sensors are a way to assess and manage the nutritional demands of plants. This study aimed to evaluate the effect of nitrogen sources on photosynthetic pigments and their correlation with corn grain yield and dry biomass. The experiment was carried out in a randomized block design with nitrogen sources (mineral, organic and biological). Contents of chlorophyll a, b and total, as well as carotenoids, were evaluated. The chlorophyll indices evaluated by both methods were positively correlated with each other and with the grain yield per plant. Nitrogen fertilization 100 % mineral was superior, when compared to the other treatments, with increments of up to 44 %. There was a positive relationship between the methods of determining and estimating the chlorophyll contents. The grain yield per plant showed the highest values when using the 100 % mineral fertilizer source, with increments above 10 %, in relation to the other sources, spending US$ 89.77 on fertilizer and earning over US$ 538.60 on grain yield. There was a positive correlation between the photosynthetic pigments obtained by both methods and grain yield per plant. Both methods are recommended for the evaluation of chlorophyll concentrations.

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