scholarly journals Silicon, Potassium and Nitrogen Accumulation and Biomass in Corn under Hydroponic Conditions

2021 ◽  
Author(s):  
Leónides Castellanos González ◽  
Renato de Mello Prado ◽  
Cid Naudi Silva Campos
Keyword(s):  
Silicon Content ◽  
Aerial Part ◽  
Nitrogen Accumulation ◽  
High Concentration ◽  
Randomized Design ◽  
Dry Biomass ◽  
Nitrogen Concentrations ◽  
Completely Randomized Design ◽  
Corn Plants ◽  
Hydroponic Conditions

The aim of the research was to evaluate the effect of the interaction of silicon, potassium, and nitrogen on the foliar area, the accumulation of these elements in the aerial part and the dry biomass in corn plants. The research was developed under hydroponic conditions in Jaboticabal Sao Pablo, Brasil using the 30A77HX hybrid. Two silicon concentrations were evaluated (0 and 2 mmol L−1); two concentrations of potassium (1 and 12 mmol L−1) and four nitrogen concentrations: (1, 10, 15, and 20 mmol L−1). A completely randomized design was used, with factorial arrangement 2 × 2 × 4 and three replications. The foliar area, the dry biomass and, nitrogen, potassium, and silicon content were determined. The application of silicon at a high concentration of K causes an increase in the accumulation of K, which is reflected in an increment of the total dry biomass in the plants of corn, while excess and a deficit of N diminish the accumulation of Si in the aerial part of the plant, which is more evident at a low concentration of K in the nutritious solution, affecting the accumulation of the total dry biomass.

scholarly journals Comparison on biomass production of three fodder germplasms

2013 ◽  
Vol 42 (1) ◽  
pp. 35-39 ◽  
Author(s):  
AR Kanak ◽  
MJ Khan ◽  
MR Debi ◽  
ZH Khandakar ◽  
MK Pikar
Keyword(s):  
Organic Matter ◽  
Plant Height ◽  
Biomass Production ◽  
Crude Protein ◽  
Biomass Yield ◽  
Fresh Biomass ◽  
Randomized Design ◽  
Dry Biomass ◽  
Completely Randomized Design ◽  
Brachiaria Mutica

The experiment was conducted to study the comparison on biomass production of fodder germplasm. Para (Brachiaria mutica Stapf.), German (Echinochloa crusgalli L.) and Dhal (Hymenachne pseudointerrupta C. Muell) grasses were cultivated in a completely randomized design (CRD). The whole area was divided into nine plots. The area of each unit plot was 6 m x 6 m. Number of cuttings were 16,000 /hectare where Plant to Plant distance was 16 cm and row and raw distance was 16 cm. Equal amount of organic and chemical fertilizer were applied in all cutting. The fodders were first harvested after 60 days of planting, second and third after successive 60 days of re-growth. The findings of the study showed that fresh biomass (p<0.01) and dry biomass yield (p<0.05) of three fodder germplasm differed significantly. Crude protein and organic matter yield were significant (p<0.01) only in the second cutting. German grass was showed significantly higher in CP and OM yield (p<0.01) at second cutting than other grasses. However, no significant effect on plant height was observed among three grasses. From the above findings it may be concluded that among the three fodder germplasm, German fodder showed best result in respect of biomass production. DOI: http://dx.doi.org/10.3329/bjas.v42i1.15772 Bang. J. Anim. Sci. 2013. 42 (1): 35-39

scholarly journals Mefenpyr-diethyl as a safener for haloxyfop-methyl in bahiagrass

2021 ◽  
Author(s):  
Roque de Carvalho Dias ◽  
Leandro Bianchi ◽  
Vitor Muller Anunciato ◽  
Leandro Tropaldi ◽  
Paulo Vinicius da Silva ◽  
...  
Keyword(s):  
Electron Transport ◽  
Protective Effect ◽  
Plant Height ◽  
Electron Transport Rate ◽  
Transport Rate ◽  
Low Doses ◽  
Protective Response ◽  
Randomized Design ◽  
Dry Biomass ◽  
Completely Randomized Design

Abstract Mefenpyr-diethyl is a foliar-acting safener of the pyrazoline chemical group, and after its absorption, the metabolization and detoxification of herbicides occur in treated plants. Studies have demonstrated the protective effect of this safener for the herbicide fenoxaprop-P-ethyl in grass. Thus, this work aimed to evaluate whether a tank mixture of mefenpyr-diethyl has a protective response to haloxyfop-methyl in non-perennial bahiagrass. The experiment had a completely randomized design and was carried out in a greenhouse, using five replications with a 10x2 factorial scheme and ten doses of haloxyfop-methyl (0.00, 0.24, 0.49, 0.97, 1.95, 3.90, 7.79, 15.59, 31.28, and 62.35 g a.i. ha-1) in the presence or absence of a tank mixture of mefenpyr-diethyl (50 g a.i. ha-1). Phytotoxicity and electron transport rate (ETR) were evaluated at 7, 14, 21, and 28 days after application (DAA), in addition to plant height and dry biomass at 28 DAA. In general, phytotoxicity increased due to the higher levels of the herbicide haloxyfop-methyl. The application of mefenpyr-diethyl, in turn, provided lower levels of phytotoxicity, as well as lower reductions in ETR, height, and dry biomass when compared to untreated plants. These results show the safener action of a tank mixture of mefenpyr-diethyl on low doses of haloxyfop-methyl in non-perennial bahiagrass.

scholarly journals EMISSÃO DE ÓXIDO NITROSO ASSOCIADO AO USO DE UREIA NO CULTIVO DE MELÃO AMARELO

Nativa ◽  
2018 ◽  
Vol 6 (6) ◽  
pp. 600
Author(s):  
Vanessa Cláudia Vasconcelos Segundo ◽  
Renato Innecco ◽  
Ebenézer De Oliveira Silva
Keyword(s):  
Leaf Area ◽  
Aerial Part ◽  
Dry Mass ◽  
Nitrogen Fertilizers ◽  
Root Part ◽  
Randomized Design ◽  
Number Of Leaves ◽  
Completely Randomized Design ◽  
Brazilian Northeast ◽  
Total Soil Nitrogen

O meloeiro tem grande importância econômica para o Nordeste brasileiro. Entretanto, em seu cultivo utiliza-se insumos que podem prejudicar o ambiente; como, os fertilizantes nitrogenados. Objetivou-se avaliar a emissão de N2O em cultivo de meloeiro amarelo ‘Goldex’. O experimento foi instalado em delineamento inteiramente casualizado, com cinco repetições. Os tratamentos foram: 0 (controle), 1,0; 1,5 e 2 vezes a quantidade de nitrogênio recomendada para cada estádio. Foi analisado o fluxo de N2O, área foliar, número de folhas, massa seca da parte aérea, massa seca dos frutos, massa seca da parte radicular, nitrogênio total do solo, das plantas e N (NH4+ e NO3-) do solo. O fluxo de N2O teve comportamento temporal irregular durante a fase de plântulas e crescente na floração. Os tratamentos afetaram significativamente a área foliar, número de folhas, massa seca da parte aérea, massa seca da parte radicular, nitrogênio da parte aérea e parte radicular das plantas e do solo. A aplicação de nitrogênio, em dosagens superiores à recomendada, não aumentou a produção do meloeiro. E o cálculo do fator de emissão mostrou que a emissão do N2O não atingiu valores prejudiciais ao ambiente.Palavras-chave: fator de emissão, efeito estufa e nitrogênio. NITROUS OXIDE EMISSION ASSOCIATED WITH UREA USE THE YELLOW MELON CROP ABSTRACT: The melon has great economic importance for the Brazilian Northeast. However, in its cultivation uses inputs that can harm the environment; Such as nitrogen fertilizers. The objective of this study was to evaluate the emission of N2O in yellow 'Goldex' cultivar. The experiment was installed in a completely randomized design with five replications. The treatments were: 0 (control), 1.0; 1.5 and 2 times the amount of nitrogen recommended for each stage. N2O flux, leaf area, leaf number, shoot dry mass, fruit dry mass, dry mass of the root portion, total soil nitrogen, of the plants and N (NH4 + and NO3 -) of the soil were analyzed. The flow of N2O had irregular temporal behavior during the seedling phase and increased in flowering. The treatments affected significantly the leaf area, number of leaves, dry mass of the aerial part, dry mass of the root part, nitrogen of the aerial part and root part of the plants and the soil. The application of nitrogen, in dosages higher than the recommended one, did not increase the production of the melon. And the calculation of the emission factor showed that the emission of N2O did not reach values harmful to the environment.Keywords: emission fator, greenhouse and nitrogen.

scholarly journals The different response of sugarcane genotypes in multiple stress

2018 ◽  
Vol 42 (5) ◽  
pp. 527-539
Author(s):  
Francisco Bruno Ferreira de Sousa ◽  
Jairo Osvaldo Cazetta ◽  
Sabrina da Silva Nascimento
Keyword(s):  
Nutrient Solution ◽  
Mineral Nutrients ◽  
High Concentration ◽  
Greenhouse Condition ◽  
Tolerance Level ◽  
Productivity Losses ◽  
Randomized Design ◽  
Completely Randomized Design ◽  
Different Response ◽  
Complete Nutrient Solution

ABSTRACT Research focused on identify abiotic stress-tolerant genotypes is highly desirable since their use may reduce costs of soil and crop management and productivity losses. The aim of this study was to determine the behavior of 24 sugarcane genotypes under high levels of Al3+ and Mn2+ associated with low availability of mineral nutrients. The experiment was carried out under greenhouse condition in a 24 × 2 factorial scheme (24 genotypes × 2 treatments: with and without stress), and four replications in completely randomized design. In the treatment without stress plants were grown in a complete nutrient solution whereas in the treatment with stress a nutrient solution with a high acidity (4.0 ± 0.1) and 5% of its original concentration, as well as a high concentration of aluminum (60 mg L-1) and manganese (700 mg L-1) was used. The genotypes RB966928, RB855443, IACSP96-3060, SP81-3250, RB867515, CTC 21, RB965902, and IAC91-1099 had their biometric characteristics less affected by the stress, possibly due to the ability to continue the process of cell division and elongation and to maintain meristematic viable regions, hence they were considered as the most tolerant. On the other hand, the genotypes RB965917, CTC 15, CTC17, RB855536, CTC 2, CTC 20, and CTC99-1906 were the most sensitive to stress. Root system was the most affected by stress, with most genotypes showing more than 70% reduction in root biomass. No relationship was observed between tolerance level of genotypes and the maturation cycles.

Vegetative Development of Radish Seedlings in Different Organic Substrates

2019 ◽  
pp. 1-8
Author(s):  
Mario Euclides Pechara Da Costa Jaeggi ◽  
Rogério Rangel Rodrigues ◽  
Israel Martins Pereira ◽  
Magno Do Carmo Parajara ◽  
Richardson Sales Rocha ◽  
...  
Keyword(s):  
Organic Compound ◽  
Aerial Part ◽  
Fresh Mass ◽  
Leaf Number ◽  
Organic Substrates ◽  
Vegetative Development ◽  
Randomized Design ◽  
Completely Randomized Design ◽  
Radish Seedlings

The objective of this work was to evaluate the vegetative development of radish seedlings in different organic substrates with seeds from two types of commercial packing. The completely randomized design was used in a 4 x 2 factorial scheme, consisting of four substrates (commercial, tanned bovine manure, mixed organic compound and vermicompost) and two seed packings (aluminized envelope and can), with eight replications, totalizing 64 seedlings. The biometric evaluations of the seedlings were carried out on the 14th day after sowing, and the following phytotechnical parameters were evaluated: leaf number, total fresh mass; fresh mass from aerial part and fresh mass from the root. According to the results, the commercial, vermicompost and mixed organic substrates provided the best results for the variables evaluated when the can was used.

scholarly journals EFIKASI EKSTRAK BIJI JARAK PAGAR MORTALITAS LARVA PENGGULUNG DAUN (Lamposema indicate) PADA TANAMAN KEDELAI (Glycine max)

2020 ◽  
Vol 6 (1) ◽  
Author(s):  
Chairudin Chairudin ◽  
Sumeinika Fitria Lizmah ◽  
Rol Mahdi
Keyword(s):  
Glycine Max ◽  
Seed Extract ◽  
High Concentration ◽  
Leaf Roller ◽  
Randomized Design ◽  
Soybean Leaf ◽  
Completely Randomized Design ◽  
Soybean Plants ◽  
Soybean Leaves ◽  
Experimental Garden

Soybean leaf roller known as Lamposema indicata. These insects attack the leaves of soybean plants by rolling up soybean leaves, that are launched 3-4 weeks after planting. The research aims to find out application of Jathropha curcas extract againts the mortality of soybean leaf roller pest (Lamposema indicata) and reduce damage to soybean plants. This research was conducted in the experimental garden, Faculty of Agriculture, Teuku Umar University in October to November 2019. The research was arranged in a non factorial Completely Randomized Design consisting of 4 levels with 5 replications. The factors experience is Jathropha curcas seed extract concentrate are E1 (control), E1 (20%, E2 (13.3% and E3 (10%). The results shows Lamprosema mortality shows the highest found in the E3 regulation, this is because in the E3 setting it has a high concentration so that the composition of the poisons contained is also high. Castor seed extract (Jatropha curcas) contains the composition of phorbol ester and cursin. Based on the observations displayed during the observation, namely changes in behavior, slowing movement of larvae, discoloration from clear green to pale yellow and compacting of the larva's body cavity.Keywords: Effectiveness of concentration, mortality, leafworm caterpillars

scholarly journals Relative Competitiveness of Common Bean Cultivars in Coexistence with Volunteer Corn

2019 ◽  
Vol 37 ◽  
Author(s):  
A.C.M. AGUIAR ◽  
C.J. BASSO ◽  
D.R.O. SILVA ◽  
D.P. GHELLER ◽  
B.D. NOVELLO ◽  
...  
Keyword(s):  
Common Bean ◽  
Leaf Area ◽  
Plant Height ◽  
Aerial Part ◽  
Dry Matter ◽  
Plant Population ◽  
Randomized Experiment ◽  
Dry Biomass ◽  
Volunteer Corn ◽  
Corn Plants

ABSTRACT: This study evaluated the relative competitiveness of two common bean cultivars in coexistence with volunteer corn emerging at different times in different proportions of plants in the association. Firstly, for both beans and volunteer corn, the plant population was determined in which the final production of dry biomass becomes constant (24 plants pot-1). A completely randomized experiment design, with five replicates, was carried out in a 2×2×5 factorial scheme, involving two common bean cultivars (IPR Gralha and Fepagro Triunfo), two emergence times of volunteer corn plants (-7 and 0 days in relation to beans) and five proportions of plants in the association (100:0, 75:25, 50:50, 25:75 and 0:100). At 35 days after bean emergence, measurements of plant height, leaf area and dry biomass of the aerial part of both species were measured. The competitiveness analysis was evaluated through diagrams applied to substitutive experiments and the use of relative competitiveness indices. The height of bean cultivars is reduced when volunteer corn emerges at the highest proportions and in advance. Early emergence of volunteer corn reduces leaf area from both bean cultivars while simultaneous emergence only reduces the leaf area of Triunfo. The dry matter biomass is lowered, due to the competition of the corn emerged before the bean, and the cultivar Gralha is more tolerant. In this way, the importance of the bean sowing in an area free from infestation of volunteer corn plants is verified.

scholarly journals Crescimento e produção de alface em resposta a níveis de drilocomposto e NPK

2020 ◽  
Vol 16 (3) ◽  
pp. 18-26
Author(s):  
Angelita Aparecida Coutinho Picazevicz ◽  
Arnaldo Libório Santos Filho ◽  
Leonardo dos Santos França Shockness ◽  
Luana Silva Lima ◽  
Karoliny Fim da Silva ◽  
...  
Keyword(s):  
Aerial Part ◽  
Dry Matter ◽  
Dry Mass ◽  
Root Mass ◽  
Randomized Design ◽  
Completely Randomized Design ◽  
Npk Fertilization

The objective was to evaluate the effects of levels of compost and fertilization with NPK on growth and production of lettuce. The experiment was carried out in a greenhouse, in a completely randomized design in a 6 x 2 factorial scheme, with four replications, considering six levels of compost (0; 25; 50; 75; 100 and 125 g plant-1) and absence and presence fertilization with NPK. The evaluated parameters were number of total and commercial leaves, mass of fresh commercial and total aerial part, mass of commercial and total dry aerial part, dry root mass and total dry mass. There was an interaction between the drilocomposite and NPK fertilization for the evaluated parameters, except for root dry matter. The fertilization with NPK increased the growth and production of lettuce when there was no application of the compost. Likewise, that the levels of this fertilizer increased the growth and production of lettuce only in the absence of NPK. The application of drilocomposite increases the growth of lettuce plants and can replace fertilization with NPK.

scholarly journals Biomass production, B accumulation and Ca/B ratio in Eucalyptus under various conditions of water availability and B doses

CERNE ◽  
2013 ◽  
Vol 19 (2) ◽  
pp. 289-295 ◽  
Author(s):  
Sílvio Júnio Ramos ◽  
Valdemar Faquin ◽  
Fabrício William Ávila ◽  
Rose Myrian Alves Ferreira ◽  
Josinaldo Lopes Araújo
Keyword(s):  
Biomass Production ◽  
Water Availability ◽  
Boron Deficiency ◽  
Natural Conditions ◽  
Randomized Design ◽  
Growth And Nutrition ◽  
Dry Biomass ◽  
Completely Randomized Design ◽  
Red Latosol ◽  
Water Tension

Soils destined for forest crops are often limiting with respect to boron (B) and in several eucalyptus crops boron deficiency has been found to be a common occurrence. The objective of this study is to evaluate biomass production, B accumulation and Ca/B ratio in eucalyptus cultivated under different conditions of soil, water availability and doses of B. To that end, an experiment was conducted using a completely randomized design with a 5 x 2 x 2 factorial arrangement consisting of five doses of B (0.00, 0.25, 0.75, 2.25 and 6.25 mg kg-1), two types of soil, namely a Dark Red Latosol (LE) and a Red-Yellow Latosol (LV), and two water tension levels (-0.033 and -0.010 MPa), with four replicates. After plants were grown, determinations were made of Ca and B contents as well as Ca/B ratios in different portions of the plants. Accumulation of B was obtained from the ratio of its contents to dry biomass in each plant portion. It was found that, under natural conditions, both Dark Red Latosol and Red-Yellow Latosol fail to meet the nutritional requirements for B in eucalyptus, potentially being limiting to that species. Overall, soil moisture influenced dry biomass production and accumulation of B only in the case of the more sandy texture soil (Red-Yellow Latosol), denoting that this factor is conditional on soil texture. Ca/B ratio results showed that application of B to the soil without a suitable supply of Ca can lead to an imbalance between these nutrients, with possible implications for plant growth and nutrition.

scholarly journals Optimization of Sulphur Requirement to Sesame (Sesamum indicum L.) Genotypes Using Tracer Techniques

2012 ◽  
Vol 41 (1) ◽  
pp. 7-13 ◽  
Author(s):  
MMA Mondal ◽  
M Badruddin ◽  
MA Malek ◽  
MB Hossain ◽  
AB Puteh
Keyword(s):  
Seed Yield ◽  
Biochemical Parameters ◽  
Dry Matter ◽  
Dry Mass ◽  
Nitrogen Accumulation ◽  
Tracer Techniques ◽  
Randomized Design ◽  
Nutrients Uptake ◽  
Completely Randomized Design ◽  
Sesame Genotypes

Four sesame genotypes viz., T6, SM4, SM7 and SM8 were verified with three levels of sulphur 10, 20 and 40 kg/ha including control. Factorial experiment was laid out in a completely randomized design with four replications. Biochemical parameters such as chlorophyll, nitrate reductase, amino acid and total sugar in leaves, total dry mass production, total nitrogen accumulation in seeds and seed yield increased with sulphur application up to 20 kg S/ha. Application of 40 kg S/ha had no significant benefit on biochemical parameters, dry matter and seed yield of sesame though 35S uptake in seeds increased with increasing sulphur levels till 40 kg/ha. The biochemical traits and nutrients uptake were superior in SM4 than other genotypes which resulted in the highest seed yield of SM4. Among the sulphur levels, 20 kg S/ha showed the maximum seed yield in all the genotypes. Therefore, sulphur @ 20 kg/ha can be recommended for getting maximum productivity of sesame genotypes. DOI: http://dx.doi.org/10.3329/bjb.v41i1.11076 Bangladesh J. Bot. 41(1): 7-13, 2012 (June)

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