scholarly journals PENGARUH SUMBER AIR PENYIRAMAN DAN FREKUENSI PENYEMPROTAN INSEKTISIDA TERHADAP PERTUMBUHAN DAN KANDUNGAN TIMBAL (Pb) PADA TANAMAN SELADA

2008 ◽  
Vol 10 (2) ◽  
pp. 66
Author(s):  
Etik Puji Handayani ◽  
Rakhmiati Rakhmiati ◽  
Yatmin Yatmin
Keyword(s):  
Water Management ◽  
Heavy Metal ◽  
Experimental Design ◽  
Block Design ◽  
Water Source ◽  
Effect Of Water ◽  
Insecticide Spray

<p>Water management and technology of protection insectiside could be changes availability heavy metal in soil and plant. The objective of this research was to study the effect of water source to spray vegetables and frequency sprayer insecticide on the growth and Pb contain in vegetable. The experimental design was factorial in randomized completely block design with three replications. The result showed the effect of water source to spray vegetables and frequency insecticide spray not significant on the growth vegetables, but significant on Pb contain in vegetables. The maximum Pb (7,97 ppm) in sludge from household and twice insecticide spray.<br />Keywords: Water source, frequency insecticide, Heavy metal Pb, vegetable.</p>

scholarly journals The effect of water management on extensive aquaculture food webs in the reconstructed wetlands of the Doñana Natural Park, Southern Spain

Aquaculture ◽  
2015 ◽  
Vol 448 ◽  
pp. 451-463 ◽  
Author(s):  
M.E.M. Walton ◽  
C. Vilas ◽  
C. Coccia ◽  
A.J. Green ◽  
J.P. Cañavate ◽  
...  
Keyword(s):  
Water Management ◽  
Food Webs ◽  
Southern Spain ◽  
Effect Of Water ◽  
Natural Park ◽  
Doñana Natural Park

Exploring the multivariate technique in the discrimination of Coffea arabica L. cultivars regarding the production and quality of grains under the effect of water management

Euphytica ◽  
2021 ◽  
Vol 217 (6) ◽  
Author(s):  
Daniel Soares Ferreira ◽  
Guilherme Bravin Canal ◽  
Moyses Nascimento ◽  
Ana Carolina Campana Nascimento ◽  
João Marcos Soares Ferreira ◽  
...  
Keyword(s):  
Water Management ◽  
Coffea Arabica ◽  
Multivariate Technique ◽  
Effect Of Water ◽  
Coffea Arabica L

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.

Assimilate allocation by rice and carbon stabilisation in soil: effect of water management and phosphorus fertilisation

2018 ◽  
Vol 445 (1-2) ◽  
pp. 153-167 ◽  
Author(s):  
Cornelius Talade Atere ◽  
Tida Ge ◽  
Zhenke Zhu ◽  
Shoulong Liu ◽  
Xizhi Huang ◽  
...  
Keyword(s):  
Water Management ◽  
Effect Of Water ◽  
Phosphorus Fertilisation

scholarly journals Aluminium induced Intrauterine Growth Retardation - an experimental study

2016 ◽  
Vol 10 (1) ◽  
Author(s):  
Mamoona Nasim
Keyword(s):  
Heavy Metal ◽  
Experimental Study ◽  
Body Weight ◽  
Experimental Design ◽  
Growth And Development ◽  
Intrauterine Growth Retardation ◽  
Control Groups ◽  
Intrauterine Growth ◽  
Aluminum Sulphate ◽  
Pregnant Mice

Present study was carried out to determine the effect of aluminum containing antacid on the intrauterine growth and development of fetus. The duration of exposure was also correlated with the effects on fetal morphology and their weights. Seventy-two pregnant mice were given a daily i.e., dose of 0.7mg/100g of aluminum sulphate for various periods according to the grouping of experimental design. This dose was equivalent to maximum therapeutic dose of aluminum salt for a 70 kg man i.e. 5000mg aluminum/day. Fetal examination was performed on day 20 of gestation. The number of live and dead fetuses in the treated animals was not significantly different from the control groups. Therefore embryo lethality of aluminum cannot be induced. However there was a decrease in fetal body weight that was directly related to the duration of exposure to aluminum sulphate solution. Dissecting microscopic examination showed, the development was arrested in the groups exposed to drugs for longer periods. These results revealed that aluminum is a type of heavy metal, which is teratogenic for mammals even in doses, which are nontoxic for adults.

scholarly journals Effect of Formulation, Binder and Compaction Pressure of Rice Husk-Bagasse Briquettes on Thermal and Physical Properties

2020 ◽  
pp. 38-53
Author(s):  
Kerich K. Daniel ◽  
Zachary O. Siagi ◽  
Julius O. Ogola
Keyword(s):  
Experimental Design ◽  
Physical Properties ◽  
Rice Husk ◽  
Block Design ◽  
Compaction Pressure ◽  
Ignition Time ◽  
Calorific Value ◽  
Significant Rise ◽  
Lake Basin ◽  
Randomized Complete Block Design

Aims: This study investigated the use of agro-wastes for the production of briquettes. It was carried out to investigate the effect of formulation, binder and compaction pressure of rice husk-Bagasse briquettes on thermal and physical properties. Study Design: The experimental design for this study was 6x5x2 Randomized Complete Block Design Place and Duration of the Study: Rice husks and bagasse were collected from Lake Basin Development Authority’s rice mill and Kibos sugar and Allied company respectively. The binders were sourced locally in Kisumu. The study was conducted between March 2019 and February 2020. The fabrication and laboratory analysis were carried out in the engineering and laboratory departments of Kenya Industrial Research and Development institute, Kisumu. Methodology: The experimental design for this study was 6x5x2 Randomized Complete Block Design. This study involved six formulations ratios (0:100, 20:80, 40:60, 60:40, 80:20, 100:0), five compaction pressure levels (108kPa, 180kPa, 253kPa, 325kPa, 397kPa) and two binders (clay, cassava) They were arranged in Randomize Complete Block Design with three replications per experiment. Results: The briquettes bulk density was in the range of 849 to 1001 kg.m−3, while the calorific value ranged from 5.541 kcal/g for 100% Rice husk clay binder to 7.345 kcal/g 20% Rice Husk cassava binder. Briquettes with blend ratio of 40-60% Rice Husk took longer time to burn. Briquette formulations with clay binder had burning rates ranging from 0.28 g/min to 0.15 g/min while with cassava binder from 0.52 g/min to 0.37 g/min. The ignition time of the briquettes ranged from 62 sec to 95 sec with cassava binder and 110 sec to 191sec with clay binder. The shatter index ranged from 0.94 to 0.99 with cassava and 0.9 to 0.98 with clay binder. Conclusion: Higher compaction pressures and use of cassava binder produced stronger briquettes with higher calorific values. Briquettes with higher percentage of bagasse had low ignition time and low bulk densities. The bulk densities and ignition time showed significant rise with increase in the compaction pressure but inversely affected the burning rate. The binder used significantly affected both the thermal and physical properties of all the formulations.

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.

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