scholarly journals INFLUENCE OF SEVERAL NONDEGRADABLE MULCHES AND ONE BIODEGRADABLE MULCH ON YIELD OF CRIMSON SWEET WATERMELON

HortScience ◽  
1995 ◽  
Vol 30 (3) ◽  
pp. 427c-427
Author(s):  
Mack Wilson ◽  
Victor Khan ◽  
Clauzell Stevens
Keyword(s):  
Experimental Design ◽  
Block Design ◽  
Total Yield ◽  
Randomized Block Design ◽  
Biodegradable Mulch

An experiment was conducted to determine the influence of several synthetic mulches and one biodegradable mulch on the yield of `Crimson Sweet' watermelons. The experimental design was a randomized block design using VisPore rowcover and various mulches. The results showed that using brown mulch resulted in a significant increase in marketable numbers of watermelons. Total yield of watermelons showed significant row cover × mulches interaction. Higher yields were observed with brown mulch and VisPore rowcover. The total number of watermelons grown with mulches was significantly greater than the control.

scholarly journals Technical and Economic Viability of Wheat with Forms of Application and Doses of Boron

2018 ◽  
Vol 10 (4) ◽  
pp. 306 ◽  
Author(s):  
Fernando S. Galindo ◽  
Marcelo C. M. Teixeira Filho ◽  
Salatiér Buzetti ◽  
Eduardo H. M. Boleta ◽  
Willian L. Rodrigues ◽  
...  
Keyword(s):  
Experimental Design ◽  
Block Design ◽  
Leaf Tissue ◽  
Economic Viability ◽  
No Tillage ◽  
Wheat Grain ◽  
Economic Return ◽  
Randomized Block Design ◽  
Tillage System ◽  
Irrigated Wheat

Boron is one of the most limiting micronutrients in grains production system in Brazil. In this way, the objective was to evaluate the effect of forms of application and doses of boron in irrigated wheat grain yield evaluating the economic terms in Cerrado region. The experiment was conducted in no-tillage system in an Oxisol with clay texture in Selvíria, MS, Brazil. The experimental design was a randomized block design with four replicates, arranged in a 4 × 3 factorial scheme: four doses of boron (0, 1, 2 and 4 kg ha-1) with boric acid source (B = 17%); and three apllication forms: a) in desiccation of the predecessor straw, together with herbicide; b) at the time of sowing, in soil along with the formulated fertilization seeding and c) via leaf tissue with the application of post emergent herbicide. The application of 2 kg ha-1 provides greater grain yields, but the highest economic return was obtained at the dose of 1 kg ha-1, with application in soil, ensuring profitability from production of irrigated wheat in the Cerrado.

scholarly journals Nutritional Requirement of Sugarcane Cultivars

2018 ◽  
Vol 10 (4) ◽  
pp. 361 ◽  
Author(s):  
Vinicius S. G. da Silva ◽  
Mauro W. de Oliveira ◽  
Vilma M. Ferreira ◽  
Terezinha B. A. Oliveira ◽  
Elaine R. Galvão ◽  
...  
Keyword(s):  
Experimental Design ◽  
Block Design ◽  
Nutritional Requirements ◽  
Nutritional Requirement ◽  
Sugarcane Varieties ◽  
The Past ◽  
Randomized Block Design ◽  
Productive Potential ◽  
New Varieties

Sugarcane produces a large amount of biomass, extracts and accumulates high amounts of nutrients. In the literature the nutritional requirements for most cultivated varieties in the past are found, however there is little information on the new varieties currently planted. The objective of this study was to evaluate the nutritional requirement of four sugarcane varieties, currently very planted, in the cycles of plant-cane, first and second ratoon. The study was installed in a Yellow Oxisol. The experimental design was a randomized block design, with five replications, and four treatments: RB867515, RB92579, SP813250 and VAT90212. During maturation of the cane, in the three evaluation cycles, the productivity of natural biomass and the nutritional requirement of macronutrients of the varieties were determined. It was evidenced that the cultivars of sugarcane are of high productive potential and resemble the accumulation of biomass, observing a yield of 158, 128 and 107 t ha-1 in the cycles of plant-cane, first and second ratoon. Regarding the nutritional requirement, the varieties did not differ among them and expressed the following order of need in the plant-cane K > N > Ca > Mg > S > P, in the first and second ratoon, the sequence observed was K > N > Ca > S > Mg > P.

scholarly journals Phenotypic stability and genetic gains in six-year girth growth of Hevea clones

1999 ◽  
Vol 34 (7) ◽  
pp. 1223-1232 ◽  
Author(s):  
Paulo de Souza Gonçalves ◽  
Alberto Kazutoshi Fujihara ◽  
Altino Aldo Ortolani ◽  
Ondino Cleante Bataglia ◽  
Nelson Bortoletto ◽  
...  
Keyword(s):  
Experimental Design ◽  
Regression Coefficient ◽  
Block Design ◽  
Rubber Tree ◽  
Phenotypic Stability ◽  
Plateau Region ◽  
Genetic Gains ◽  
Paulo State ◽  
Randomized Block Design ◽  
Clonal Variance

Rubber tree [Hevea brasiliensis (Willd. ex Adr. de Juss.) Müell. Arg.] budgrafts of seven clones were evaluated on five contrasting sites in the plateau region of the São Paulo State, Brazil. The objective of this work was to study the phenotypic stability for girth growth. The experimental design was a randomized block design with three replications and seven treatments. Analysis of variance of girth at six-year plant growth indicated a highly significant clone x site interaction. Only linear sites and clone x site components of clone x year interaction were significant, indicating that the performance of clones over sites for this trait could be predicted. The clones GT 1 and PB 235 showed the greatest stability in relation to girth growth, with foreseen responses to change, introduced in the sites. The clones PB 235 and IAN 873 showed significative difference in relation to regression coefficient, representing clones with specific adaptability on favorable and unfavorable sites respectively. The clone GT 1 became the most promissory one in the study of stability and adaptability even showing low girth growth. Expected genetic gains from planting sites, along with estimates of clonal variance and repeatability of clonal means are generally greatest or close to the greatest when selection is done at the same site.

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 Keragaan Varietas Kubis (Brassica oleracea L) Dataran Rendah dengan Aplikasi Mulsa di Maluku

2020 ◽  
Vol 16 (1) ◽  
pp. 42-50
Author(s):  
Marietje Pesireron ◽  
Sheny S Kaihatu ◽  
Rein E Senewe
Keyword(s):  
Experimental Design ◽  
Block Design ◽  
Fruit Weight ◽  
Sticky Trap ◽  
Plastic Mulch ◽  
Yield Performance ◽  
Randomized Block Design ◽  
Study Results ◽  
Number Percentage ◽  
Brassica Oleracea L

The low yield of cabbage in Maluku is thought to due to the lack of attention of farmers to grow to crop because so far farmers think it can only grow well and forms crops in the highlands, so no one wants to grow cabbage. This study aimed to determine the yield performance of five cabbage varieties with the use of several types of mulches and was carried out in Gemba Village, Kairatu Subdistrict, Western Seram Regency. The experimental design used was the factorial Randomized Block Design with three replications and the farmers as replications. The first factor was five varieties of cabbage (Sehati-F1, Daehnfeldt, Green Hero, Green Coronet, KK-Koss), the second factor was the type of mulch, consisting of four types, namely: without mulch (M0), black silver plastic mulch, straw mulch, and husk mulch. The data obtained were analyzed with analysis of variance and DMRT test at the level of 5% if necessary. Parameters observed included plant height at 45 days after planting, leaf number, percentage of crop formation, percentage of pest and disease attacks, crop circumference per plant at harvest, fruit weight, and yield.  The study results showed that the five varieties tested with the use of various types of mulch had the potentials to be developed in Maluku. Varieties with the highest yields and very good adaptation to lowland environments in Maluku included Sehati-F1 and KK-Cross. Pest control by using plant-based pesticides in a combination with scheduled mechanical control (yellow plates, pitfalls, and stick traps) could reduce the levels of pest and disease attacks and the crops appeared healthy for consumption. Keywords: cabbage, lowland, mulch   ABSTRAK Rendahnya produksi kubis di Maluku diduga akibat kurangnya perhatian petani untuk bertanam kubis, yang dikarenakan selama ini petani mengira kubis hanya dapat tumbuh baik dan membentuk krop di dataran tinggi, sehingga sedikit petani yang mau berusahatani kubis. Kajian ini bertujuan mengetahui keragaan hasil lima varietas kubis dengan penggunaan berbagai jenis mulsa di desa Gemba, Kecamatan Kairatu, Kabupaten Seram Bagian Barat. Rancangan percobaan yang digunakan adalah rancangan acak kelompok faktorial dengan tiga ulangan dan petani sebagai ulangan. Faktor pertama adalah lima varietas kubis (Sehati-F1, Daehnfeldt, Green hero, Green Coronet, KK-Cross); faktor kedua adalah jenis mulsa yang terdiri dari empat macam, yaitu: tanpa mulsa (M0), mulsa plastic hitam perak, mulsa jerami dan mulsa sekam. Data yang diperoleh dianalisis menggunakan analisis ragam dan uji lanjut DMRT pada taraf 5% sesuai kebutuhan. Peubah-peubah yang diamati meliputi tinggi tanaman umur 45 hari setelah tanam (hst), jumlah daun, persentase pembentukan krop, persentase serangan hama dan penyakit, lingkar buah per tanaman saat panen, bobot buah dan hasil panen. Hasil penelitian menunjukkan bahwa kelima varietas yang di uji dengan penggunaan berbagai jenis mulsa sangat berpotensi untuk dibudidayakan di Maluku berdasarkan kemampuannya membentuk krop. Varietas dengan produksi tertinggi dan beradaptasi sangat baik terhadap lingkungan dataran rendah di lokasi penelitian adalah Sehati-F1 dan KK-Cross. Penggendalian hama dengan menggunakan pestisida nabati yang dikombinasikan dengan pengendalian secara mekanis (tampan kuning, pitfoll dan sticky trap) secara terjadwal dapat menurunkan tingkat serangan hama dan penyakit, dan menghasilkan tanaman-tanaman yang sehat. Kata Kunci: dataran rendah, kubis, mulsa, varietas

scholarly journals ANALISIS PERCOBAAN FAKTORIAL UNTUK MELIHAT PENGARUH PENGGUNAAN ALAT PERAGA BLOK ALJABAR TERHADAP PRESTASI BELAJAR ALJABAR SISWA

2013 ◽  
Vol 2 (2) ◽  
pp. 1
Author(s):  
NI PUTU AYU MIRAH MARIATI ◽  
NI LUH PUTU SUCIPTAWATI ◽  
KARTIKA SARI
Keyword(s):  
Academic Achievement ◽  
Experimental Design ◽  
Block Design ◽  
Student Academic Achievement ◽  
Visual Aids ◽  
Geometry Model ◽  
Randomized Block Design ◽  
Algebraic Forms ◽  
Block Algebra ◽  
Better Than

The experimental design was applied in research in many different fields of science, such as in education, as used in this study. Block algebra visual aids is a visual aids in the form of the geometry model used to concretize understanding the variables and constants in the algebra which is an abstract concept. This visual aids are used as a basis for factoring algebraic forms. In connection with this, the aims of this research is to determine the effect of the application of algebra block in student academic achievement in class VII in the field of algebra in schools categorized as private, SSN (Sekolah Standar Nasional) and the previously categorized RSBI (Rintisan Sekolah Bertaraf Internasional). The method of analysis used in this study was two-factor experimental design in a randomized block design. The results showed that the academic achievement of students in the field of algebra after learning with block algebra visual aids obtained better than the academic achievement of students who received learning without using block algebra visual aids. Moreover, it also shows that the categories of schools have a significant effect on student achievement.

scholarly journals Response of Wheat Plants to Combinations of Herbicides with Insecticides and Fungicides

2019 ◽  
Vol 37 ◽  
Author(s):  
M. VIECELLI ◽  
F.B. PAGNONCELLI JR. ◽  
M.M. TREZZI ◽  
B.M. CAVALHEIRO ◽  
R.C.R. GOBETTI
Keyword(s):  
Experimental Design ◽  
Grain Yield ◽  
Yield Components ◽  
Dry Matter ◽  
Block Design ◽  
Wheat Grains ◽  
Synergistic Interactions ◽  
Randomized Block Design ◽  
Relative Tolerance ◽  
Chemical Groups

ABSTRACT: The combination of herbicides and other pesticides can influence weed and crop management. This study aimed to evaluate the response of the combination of different herbicides with insecticides or fungicides of different chemical groups on the development and yield of wheat grains of the cultivar ORS Vintecinco. The experimental design was a randomized block design with three replications. The experiment consisted of 33 treatments, as follows: control without application and application of the herbicides 2,4-D (1,005 g a.e. ha-1), bentazon (756 g a.i. ha-1), metsulfuron-methyl (3 g a.i. ha-1), and pyroxsulam (16 g a.i. ha-1), isolated or combined with the insecticides chlorfluazuron (15 g a.i. ha-1), chlorpyrifos (720 g a.i. ha-1), deltamethrin (5 g a.i. ha-1), and methomyl (5 g a.i. ha-1) or with the fungicides azoxystrobin (100 g a.i. ha-1), carbendazim (250 g a.i. ha-1), and propiconazole (190 g a.i. ha-1). Relative tolerance (RT), shoot dry matter (SDM), yield components, and grain yield were evaluated. In general, pyroxsulam had the highest number of synergistic interactions with insecticides and fungicides, reducing RT and SDM, especially the combination pyroxsulam + chlorpyrifos due to a lower RT level (45%) and higher SDM reduction (52%). All combinations of herbicides with the insecticide chlorpyrifos and most of the combinations with the fungicide propiconazole led to a reduction of grain yield when compared to their isolated application or to control without application.

scholarly journals Pengaruh Pupuk Gandasil D Terhadap Pertumbuhan dan Produksi Kacang Tanah (Arachis hypogaea L.)

2019 ◽  
Vol 1 (2) ◽  
pp. 61-66
Author(s):  
Deni Soviani ◽  
Adrianus Adrianus ◽  
Abdullah Sarijan
Keyword(s):  
Experimental Design ◽  
Arachis Hypogaea ◽  
Block Design ◽  
Randomized Block Design ◽  
Arachis Hypogaea L

This study aims to determine the effect of Gandasil D fertilizer on growth and the production of peanut (Arachis hypogaea L.). The research was carried out in Kuprik, District Semangga, start from July until October 2012. The experimental design used was randomized block design with 4 (four) treatment and three replication. The treatment was Gandasil D fertilizer: 1,0 g/l, 1,5 g/l, 2,0 g/l and without Gandasil D fertilizer (control). The results showed that the treatment of Gandasil D fertilizer not showing significant effect on the growth and the production of peanut. But the treatment of D2 (Gandasil D) with dosis 1,5 g/l can increase the production a peanut higher than another treatment, the result is 1,40 kg/plot or 2,91 ton/ha.

scholarly journals The Effect of Fish Meal Substitution with Chicken Viscera in Pig Ration on Blood and Meat Cholesterol, LDL and HDL

2018 ◽  
Vol 3 (2) ◽  
Keyword(s):  
Food Safety ◽  
Experimental Design ◽  
Fish Meal ◽  
Block Design ◽  
Live Weight ◽  
Cholesterol Content ◽  
Randomized Block Design ◽  
Pig Meat ◽  
Chicken Viscera

The purpose of this research was to study the effect of substitution of fish meal with chicken viscera in the ration on cholesterol, LDL and HDL content in blood and meat of pig. Fifteen pigs crossbred of Spotted Poland Chinese and Chaster White at10-week-old with live weight of between 15 and 23 kg, put in individual cages. The treatments were R0 = fish meal 10% + 0% chicken viscera (control); R1 = 5% fish meal + chicken viscera 5%; and R2 = fish meal 0% + 10% chicken viscera. The experimental design used was Randomized Block Design. The variables measured were total cholesterol, LDL, HDL content in blood and cholesterol in pig meat. The results showed that replacement fish meals at 10 % of viscera give good results on all variables measured. Based on this results it can be concluded that at 10% chicken viscera in pig ration could be improved the quality of meat of pork in terms of cholesterol content to ensure human food safety.

scholarly journals Efficiency of the Adapted Automatic Row Hoe for Weed Control in Organic Soybean

2020 ◽  
pp. 25-36
Author(s):  
Emerson Fey ◽  
Neumárcio Vilanova da Costa ◽  
Silvio Douglas Ferreira ◽  
Vitor Gustavo Kuhn ◽  
Anderson Marcel Gibbert ◽  
...  
Keyword(s):  
Experimental Design ◽  
Weed Control ◽  
Block Design ◽  
Mechanical Control ◽  
Randomized Block Design ◽  
Direct Sowing ◽  
Production Losses

The objective of the present study was to evaluate the row hoe model CHOPSTAR®, the mechanical control of weeds in between the rows of soybean implanted in organic direct sowing system, associated with the camera-guided system. Two experiments were carried, being that in the first experiment an experimental design with sub-subdivided plots with four replicates. The plots corresponded to two soybean varieties (‘Embrapa BRS 284’ and ‘Coodetec CD 216’), the subplots corresponded to the sowing densities of 329.2 and 574.6 thousand plants ha-1; and the sub-subplots corresponded to four managements of weeds: one mechanized hoe (2 days after sowing – DAS), two mechanized hoes (22 and 47 DAS), one control manually hoed and other control without hoeing. In the second experiment a randomized block design in subdivided plots with three replicates was used. The plots corresponded to two soybean varieties (‘BRS 284’ and ‘DF 2353’), the subplots constituted of different times when the hoes were made, being: one (14 DAS); two (7 and 21 DAS; two (14 and 28 DAS); three (7, 14 and 28 DAS); besides one control manually hoed up to 28 DAS. In the first experiment it was observed that the automatized hoe was efficient in controlling the weeds and it was necessary only one mechanized hoe (22 DAS) for the ‘BRS 284’ independent of the sowing density, while for the ‘CD 216’ the number of mechanized hoes depended on the sowing density. In the second experiment, it was necessary only one mechanized hoe (14 DAS) to avoid production losses in the varieties ‘BRS 284’ and ‘DF 2353’. The automatized hoe is an alternative to control weeds in areas of organic soybean in direct sowing system, however, damages to the crop can occur depending on the sowing density, mainly in the late management of the mechanized hoe.

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