Fosfitos de potasio en el manejo de  Peronospora sparsa  Berkeley y calidad floral  del cultivo de rosa cv. Samouraï  ®

Peronospora sparsa Berkeley limits the production of rose as a cut flower up to 100%. In some crops, potassium phosphites are used as a sustainable alternative for the control of oomycetes. The objectives were to evaluate the biological effectivity of commercial formulations of potassium phosphite for the management of P. sparsa, and to calculate their effect on the quality of rosa cv. Samouraï® stems and flower buds. A randomized complete block design with five treatments and an absolute control with six repetitions were used for two consecutive years. The following aspects were evaluated: incidence, disease severity, biological effectiveness, and floral quality through the length and diameter of flower stems and buds. The potassium phosphites evaluated reduced incidence to 81.7% and severity from 71.7 to 97.0%, which led to a biological effectiveness of 96.9% with FosfiMax 40-20®. The Defense Ax ® treatment increased the length and diameter of the button compared to the other treatments.

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Aplikasi Disinfektan dan 1-Methylcyclopropene untuk Mempertahankan Vase Life Bunga Potong Heliconia chartacea Lane ex Barreiros cv. ‘Sexy Pink’

Jurnal Hortikultura Indonesia ◽

10.29244/jhi.8.1.68-78 ◽

2017 ◽

Vol 8 (1) ◽

pp. 68

Author(s):

Juang G. Kartika ◽

Siti Rohmah

Keyword(s):

Block Design ◽

Optimum Concentration ◽

Vase Life ◽

Cut Flower ◽

Cut Flowers ◽

Post Harvest ◽

Bright Pink ◽

Randomized Complete Block Design ◽

Two Factors

ABSTRACT Heliconia ‘Sexy Pink’ has beautiful bright pink colour and big size of bractea. The quality of Heliconia ‘Sexy Pink’ as tropical cut flower can be maintained with appropriate post-harvest treatments. One of the post-harvest technology that can be applied is the use of disinfectant and 1- Methylcyclopropene (1-MCP). The objective of the study was to prolong the vase life of Heliconia ‘Sexy Pink’ using disinfectant and 1-MCP, and to determine the optimum concentration of disinfectant (active compound: sodium hyphoclorite-NaClO) and 1-MCP applied separately or in combination. This study used factorial randomized complete block design with two factors and ten replications. The first factor was concentration of disinfectant (NaClO) i.e 0% (A0), 0.5% (A1), 1.0% (A2) and 1.5% (A3). The second factor was 1-MCP i.e 0 ppm (B0), 0.003 ppm (B1), 0.004 ppm (B2) and 0.005 ppm (B3). The results showed that optimum 1-MCP concentration for maintaining the vase life of Heliconia 'Sexy Pink' cut flowers by 30% from total amount of bractea blackened variables was 0.005 ppm; This 1-MCP concentration kept the vase life for 6.2 days. Vase life of Heliconia 'Sexy Pink' cut flower with the combination treatment without disinfectant and 1-MCP concentration of 0-0.005 ppm based on hedonic test by panelists still preferably up to 8 days. Hedonic test criteria is recommended to indicate the vase life of Heliconia 'Sexy Pink' cut flower. The addition of the disinfectant is not advisable to maintain the vase life of Heliconia 'Sexy Pink' cut flower. Key words: 1-methylcylopropen, Heliconia, NaClO, tropical cut flower, vase lifeABSTRAK Heliconia "Sexy Pink" memiliki warna merah muda yang indah dengan ukuran besar dan rangkaian braktea cukup banyak. Kualitas bunga Heliconia "Sexy Pink" sebagai bunga potong tropis dapat dipertahankan kesegarannya dengan perlakuan aplikasi pascapanen yang tepat. Salah satu teknologi pasca panen yang dapat digunakan ialah aplikasi bahan kimia berupa disinfektan dan 1- Methylcyclopropene (1-MCP). Penelitian ini bertujuan mempertahankan vase life bunga potong Heliconia "Sexy Pink" menggunakan disinfektan (bahan aktif: sodium hipoklorit-NaClO) dan 1- MCP. Penelitian ini mengggunakan rancangan kelompok lengkap teracak (RKLT) faktorial dengan dua faktor. Faktor pertama adalah konsentrasi disinfektan (NaClO): 0% (A0), 0.5% (A1), 1.0% (A2) dan 1.5% (A3). Faktor kedua yaitu konsentrasi 1-MCP: 0 ppm (B0), 0.003 ppm (B1), 0.004 ppm (B2) dan 0.005 ppm (B3), sehingga terdapat 16 kombinasi perlakuan yang diulang 10 kali. Setiap satuan percobaan terdiri atas 1 tangkai bunga, sehingga terdapat 160 tangkai bunga Heliconia "Sexy Pink". Hasil penelitian menunjukkan bahwa konsentrasi 1-MCP yang optimum untuk mempertahankan vase life bunga potong Heliconia "Sexy Pink" berdasarkan peubah 30% braktea menghitam adalah 0.005 ppm; konsentrasi ini dapat memperpanjang masa segar bunga selama 6.20 hari. Vase life bunga potong Heliconia "Sexy Pink" dengan kombinasi perlakukan tanpa disinfektan dan konsentrasi 1-MCP 0-0.005 ppm berdasarkan uji hedonik masih disukai panelis hingga 8 hari. Kriteria uji hedonik lebih direkomendasikan untuk menunjukkan vase life bunga potong Heliconia "Sexy Pink". Penambahan disinfektan tidak disarankan untuk mempertahankan vase life bunga potong Heliconia "Sexy Pink". Kata kunci: 1-methylcylopropene, bunga tropis, Heliconia, NaClO, vase life

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Plant spacing and pollen quantity on yield and quality of squash seeds

Horticultura Brasileira ◽

10.1590/s0102-05362003000300005 ◽

2003 ◽

Vol 21 (3) ◽

pp. 443-447 ◽

Cited By ~ 6

Author(s):

Márcio S. de Lima ◽

Antonio I. I. Cardoso ◽

Marcelo F. Verdial

Keyword(s):

Seed Yield ◽

Seed Quality ◽

Block Design ◽

Fruit Production ◽

Plant Spacing ◽

Plant Seed ◽

Yield And Quality ◽

Randomized Complete Block Design ◽

Pollen Quantity

Squash seeds yield and quality can be improved by proper population plant spacing and the pollen quantity, which influences the pollination quality and fertilization. Nine experiments were conducted as a factorial combination of three spacing between plants (0.8 x 0.3, 0.8 x 0.6 and 0.8 x 0.9 m), two quantities of pollen (50% of an anther and another entire one) and natural insect pollination. Seed and fruit production parameters, and seed quality were evaluated. A randomized complete block design, five replications, with ten plants per plot was adopted. Larger plant spacing increased the average number of mature fruits and seed yield per plant. Seed yield was directly proportional to the amount of pollen used during pollination. Higher amounts of pollen resulted in higher seed yield per area, but the plant spacing did not affect this characteristic. Manual pollination, using a whole anther, did not differ from natural pollination in relation to seed yield and quality.

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Agronomic Efficiency of Hybrids of Corn to Nitrogen, Phosphorus and Potassium Targeting Fresh Corn

Journal of Agricultural Science ◽

10.5539/jas.v11n9p120 ◽

2019 ◽

Vol 11 (9) ◽

pp. 120

Author(s):

Cecília L. P. Resende ◽

Leandro F. Damaso ◽

Mylla C. R. Ávila ◽

Daniel D. C. Carvalho ◽

Patrícia G. S. Melo ◽

...

Keyword(s):

Block Design ◽

Corn Hybrids ◽

Agronomic Efficiency ◽

Quality Of Water ◽

Randomized Complete Block Design ◽

Technological Level ◽

Phosphorus And Potassium ◽

The One ◽

Nitrogen Phosphorus

The efficiency and responsiveness agronomic to the main macronutrients is becoming increasingly important due to the risk of supply, since it is a finite resource. In addition, excess fertilizer decreases the quality of water and air. Thus, the objective of this work was to assess the corn hybrids in terms of their efficiency and responsiveness to nitrogen (N), phosphorus (P) and potassium (K), and identify the ones most suitable for fresh consumption, according to the product type and technological level to be adopted by the farmer. The randomized complete block design in a 10 × 3 (hybrids and doses) factorial scheme was adopted for the experiment, with three replications, for two season crops (2013/14 and 2014/15). Ten hybrids (2B512PW, 2B587PW, 2B707PW, 30F35HR, 30F53YH, AG1051, BRS1055, BM3061, P3646H e P3862YH) were used in isolation under low availability (without application) and partial, of N, P and K, in an isolated manner, also evaluated under the recommended dose, aiming at fresh consumption. The most efficient and responsive hybrid must first be identified in isolation, based on the availability it is subjected to and later, by its sale, focused on fresh consumption. The hybrids indicated for low availability (low technological level) were BRS1055 and 30F53YH, with respect to responsiveness or agronomic efficiency, the hybrid P3862YH was the one that presented the best performance and indicated for technological levels of medium to high, considering the classification obtained for the nitrogen, phosphorus, and potassium for production vegetable corn.

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Physical Bean Quality of Arabica Coffee (Coffea Arabica) Cultivated at High and Medium Altitude

Pelita Perkebunan (a Coffee and Cocoa Research Journal) ◽

10.22302/iccri.jur.pelitaperkebunan.v32i3.241 ◽

2016 ◽

Vol 32 (3) ◽

pp. 151-161

Author(s):

Dwi Nugroho ◽

Panjisakti Basunanda ◽

Suryadi Mw

Keyword(s):

Coffea Arabica ◽

Block Design ◽

Research Station ◽

Physical Quality ◽

Arabica Coffee ◽

Randomized Complete Block Design ◽

Before And After ◽

Coffee Cultivation ◽

Cup Quality

Reducing productivity, outbreak of insects and diseases, and decreasingin physical and cup quality are major problems for Arabica coffee cultivation inmedium altitude. The aim of this study was to investigate the effect of altitude onphysical quality in eight genotypes of Arabica coffee. This research was conductedat two locations i.e. Andungsari Research Station-Bondowoso (1250 m asl. ashigh altitude) and Kalibendo Estate-Banyuwangi (700 m asl. as medium altitude).Randomized complete block design was used with three replications. Collecteddata consisted of outturn, weight of 100 beans, shape bean normality, apparentswelling, bulk density before and after roasting. Combined analysis on the physicalquality traits of green bean showed genotype x altitude interactions on weight of100 beans, percentage of normal beans and percentage of empty bean. Altitudesignificantly influenced coffee outturn. Decreasing in altitude from 1.250 m asl.to 700 m asl. caused declining in the outturn as much 32.9%. BP 700A, K 29, K34, K 79, and K 99 were genotypes that stable to produce normal bean and emptybeans at high and medium altidute, while K 8, K 130, and SIG were genotypeswith high normal beans at high altitude but not stable. Genotype x altitude interactiondid not occur for physical quality of other variables of outturn, bulk densitybefore and after roasting, apparent swelling, percentage of round beans,percentage of elephant beans, and percentage of triage beans. Altitude showedsignificant effect on all of physical quality of bean variables.

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Effect of selection methods on seed potato quality in the following season

IOP Conference Series Earth and Environmental Science ◽

10.1088/1755-1315/922/1/012015 ◽

2021 ◽

Vol 922 (1) ◽

pp. 012015

Author(s):

N Gunadi ◽

A Pronk ◽

A A Kartasih ◽

L Prabaningrum ◽

T K Moekasan ◽

...

Keyword(s):

Seed Potato ◽

Block Design ◽

Growing Season ◽

Selection Method ◽

Selection Methods ◽

Plant Selection ◽

West Java ◽

Potato Quality ◽

Randomized Complete Block Design

Abstract Most potato farmers in Indonesia select the small tubers at harvest for planting in the following season, the so-called farmers’ practice (FP). This propagation method is cheap, but the small tubers may come from less healthy plants, which increases the build-up of diseases with accelerated yield decreases over the seasons. Alternatively, farmers may identify healthy plants within the growing season and select those for propagation, the so-called positive plant selection method (PPSM). An experiment was carried out to evaluate the effects of PPSM compared to FP on yields in the following season in the two main potato growing areas of West Java, i.e., Pangalengan and Garut. Generations G2 and G3 of cv. Granola and one generation of the imported cv. Atlantic were used. Selected seeds using PPSM and FP were planted in the second season in a randomized complete block design. Results show that yields of seeds selected through PPSM were significantly higher compared to seeds selected through FP, over both locations, on average, 7.4, 5.5 and 1.2 ton ha−1 for Granola G2 and G3, and the Atlantic, respectively. These yield increases represent an increase in the gross revenue of 30.8 to 51.8 million IDR ha−1 for Granola and 1.9 to 7.8 million IDR ha−1 for Atlantic at a farm gate price of 7,000 and 6,500 IDR kg−1, respectively. This study confirms that PPSM is superior to FP and improves the quality of the farms saved seeds.

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Assessing the Response of Sesame to Inorganic and Organic Nutrient Sources

Journal of Agricultural Science ◽

10.5539/jas.v12n1p108 ◽

2019 ◽

Vol 12 (1) ◽

pp. 108

Author(s):

Paul Anguria ◽

George N. Chemining’wa ◽

Richard N. Onwonga ◽

Michael A. Ugen

Keyword(s):

Seed Yield ◽

Finger Millet ◽

Crop Residues ◽

Seed Quality ◽

Block Design ◽

Mineral Fertilizers ◽

Fertilizer Rate ◽

Nutrient Sources ◽

Randomized Complete Block Design

Sesame (Sesamum indicum. L) is one of the main sources of livelihoods in northern Uganda. However, its production is constrained by low soil fertility and moisture levels. A study was conducted at Serere, Uganda in 2013 and 2014 to investigate the effect of organo-mineral fertilizers on growth, seed yield and nutritional quality of sesame. The design of the experiment was a randomized complete block design with three replications. The treatments comprised: control (no soil amendment), mixtures of 4 crop residues each at (3 and 6 t/ha) and two rates of N, P and K. Finger millet husks (3 t/ha) plus lower fertilizer rate (30 kg N-25 kg P-40 Kg K/ha) had significantly higher seed yield of sesame; while finger millet husks (6 t/ha) plus higher fertilizer rate (60 kg N-50 kg P-80 Kg K/ha) significantly increased vegetative growth of sesame. Finger millet husks (6 t/ha) plus lower fertilizer rate had significantly higher seed crude protein content of sesame; while cowpea husks (3 t/ha) plus higher fertilizer rate and groundnut shells (3 t/ha) plus lower fertilizer rate produced significantly higher seed total ash and seed oil content of sesame, respectively. This study has demonstrated that application of a mixture of crop residues and inorganic fertilizers is the best treatment in enhancing growth, seed yield and nutritional seed quality of sesame.

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Productivity, quality of fruits and architecture of Jalapeño pepper at different planting densities

Horticultura Brasileira ◽

10.1590/s0102-053620190312 ◽

2019 ◽

Vol 37 (3) ◽

pp. 331-337

Author(s):

Carlos Francisco Ragassi ◽

Juliana Zucolotto ◽

Lucas M Gomes ◽

Cláudia SC Ribeiro ◽

Nuno Rodrigo Madeira ◽

...

Keyword(s):

Fruit Quality ◽

Plant Architecture ◽

Block Design ◽

Titratable Acidity ◽

Soluble Solids ◽

Randomized Complete Block Design ◽

Total Titratable Acidity ◽

Second Year ◽

Increase In Productivity

ABSTRACT Mechanizing the harvest of Jalapeño pepper involves changes in the production system. Spacings between plants in rows (10 to 40 cm; 60 cm fixed between rows) were evaluated in relation to plant architecture, productivity and fruit quality of cultivar BRS Sarakura during three years, in a randomized complete block design with five replicates. Productivity (41.9 to 78.8 t ha-1) and plant height (40.1 to 47.3 cm) responded linearly to density; on the other hand, productivity per plant responded negatively (0.48 to 1.04 kg plant-1). The stem first bifurcation height was little influenced. Fruit chemical analyses were carried out in the second year of the experiment; spacing significantly influenced pH (5.36 to 4.84), total titratable acidity (TTA) (0.48 to 0.36%) and total soluble solids (TSS)/TTA ratio (11.5 to 15.6); no influence on TSS (5.65%) was noticed, though. The increase of plant population provided an increase in productivity without affecting fruit quality; the highest height of the first bifurcation achieved may not be enough to enable mechanized harvesting of the cultivar BRS Sarakura.

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Production and quality of banana ‘BRS Conquista’ bagged with different colored polypropylene bags

Revista Colombiana de Ciencias Hortícolas ◽

10.17584/rcch.2019v13i2.9418 ◽

2019 ◽

Vol 13 (2) ◽

pp. 171-177

Author(s):

Rafaelly Calsavara Martins ◽

Jackson Mirellys Azevêdo Souza ◽

Marcelo De Souza Silva ◽

Nathália De Souza Parreiras ◽

Marcela Sant'Anna Cordeiro da Silva ◽

...

Keyword(s):

Total Mass ◽

Mass Number ◽

New Technologies ◽

Block Design ◽

Titratable Acidity ◽

Soluble Solids ◽

Randomized Complete Block Design ◽

Plastic Bag ◽

Maturation Index

Worldwide, the second most traded fruit is banana, which is highly appreciated by Brazilian consumers. Moreover, new technologies have been used to improve fruit quality during cultivation. This study aimed to assess the influence of plastic bag colors on the production and quality of banana ‘BRS Conquista’. The treatments consisted of the use of commercial polypropylene bags e colored white, black, red or blue, in addition to the control (non-bagged). This study used a randomized complete block design with five treatments, four replicates and four plants per plot, totalling 80 plants. The assessments consisted of bunch mass; rachis mass; fruit total mass; mean cluster mass; number of fruits per bunch and per cluster; and fruit length and diameter; along with fruits physicochemical traits, such as soluble solids, titratable acidity, pulp/peel ratio and maturation index. The results indicated that no interference was obtained from the different plastic bag colors in the productive variables. However, a greater content of soluble solids was observed in the non-bagged bunches.

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Biofumigation efficacy of spider plant (Cleome gynandra L.) accessions on nematode control in tuberose (Polianthes tuberosa L.)

NASS Journal of Agricultural Sciences ◽

10.36956/njas.v2i2.115 ◽

2020 ◽

Vol 2 (2) ◽

Author(s):

Stella Jerono Keter ◽

Samuel Nyalala ◽

Joshua Ogweno

Keyword(s):

Block Design ◽

Growth Yield ◽

Research Field ◽

Growth And Yield ◽

Yield And Quality ◽

Flower Yield ◽

Cleome Gynandra ◽

Randomized Complete Block Design ◽

Spider Plant

Tuberose (Polianthes tuberosa L.) is a perennial summer flower grown by smallholders in Kenya for export. However, its production and export volumes have declined drastically due to nematodes infestation. This study evaluated the effect of Cleome gynandra accessions on nematode management on tuberose. Experiment was conducted at the Horticulture Research Field, Egerton University, Kenya using a randomized complete block design with four replications. The treatments were: five accessions of C. gynandra namely ‘Simlaw’, ‘Egerton’, ‘Taastrup’, ‘PS’ and ‘IP8’, applied at 6 kg/m2 and compared with Brassica napus, solarization and untreated control. Data was collected on growth and yield parameters, nematode infestation and quality of tuberose. Data collected was subjected to analysis of variance at p≤0.05 and means separated using Tukey’s test. Biofumigation with Cleome gynandra accessions helped to reduce nematode population by 34%, gall numbers by 83% and galling index by be 96% when compared with the control. Use of biofumigation helped to improve plant height and leaf number of tuberose by 16% and 87%, respectively, when compared with the control. Use of biofumigation helped to improve spike length by 32%, marketable spikes by 80%, and flower yield by 90% and reduced nonmarketable spikes by 95% when compared with the control. Based on the above results, use of Cleome gynandra accessions and other biofumigants such as rape seed can be used to manage nematodes and improve growth, yield and quality of tuberose.

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Testing of microbial additives in the rooting of Norway spruce (Picea abies [L.] Karst.) stem cuttings

Journal of Forest Science ◽

10.17221/21/2011-jfs ◽

2011 ◽

Vol 57 (No. 12) ◽

pp. 555-564 ◽

Cited By ~ 1

Author(s):

I. Repáč ◽

J. Vencurik ◽

M. Balanda

Keyword(s):

Norway Spruce ◽

Shoot Growth ◽

Growth Parameters ◽

Alginate Bead ◽

Block Design ◽

The Other ◽

Stem Cuttings ◽

Naturally Occurring ◽

Randomized Complete Block Design ◽

Ecm Fungi

Laboratory-produced alginate-bead inoculum of ectomycorrhizal (ECM) fungi Cortinarius sp. and Gomphidius glutinosus, fungal commercial products ECtovit® and Trichomil®, bacterial commercial product BactoFil B®, and commercial rooting stimulator Vetozen® were applied to a peat-perlite (1:2, v:v) rooting substrate of Norway spruce stem cuttings collected from 4-year-old nursery-grown seedlings immediately before the insertion of cuttings into the substrate. The application of beads free of fungi and the substrate without an additive were the other treatments. The cuttings were rooted in vessels (60 cuttings per vessel, 180 per treatment) placed in a glasshouse and arranged in a randomized complete block design. The cuttings were estimated for one growing season (approximately for 26 weeks) after their insertion into the rooting substrate. Rooting % of the cuttings ranged from 45 (mycelium-free beads) to 75 (control) according to treatments, 64 on average. No significant differences among treatments were found in % of ECM morphotypes, total ECM colonization of roots (%), and growth parameters of shoots and roots of the cuttings. The applied microbial additives were not sufficiently efficient to form treatment-related ectomycorrhizas that were formed by naturally occurring ECM fungi. Inoculation by the ECM fungus Cortinarius sp. and application of Trichomil had a partial stimulative effect on the shoot growth of cuttings. Shoot and root growth parameters were not significantly correlated with total ECM colonization, except for a negative dependence of the root number in Trichomil treatment. A higher concentration of K but lower concentrations of Ca and Mg in Ectovit treatment than in the other treatments were detected.

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