scholarly journals Pasture recovery with the application of agricultural gypsum associated with nitrogen fertilization

2020 ◽  
Vol 9 (9) ◽  
pp. e913997981
Author(s):  
Gabriel Banos Rodrigues ◽  
Lucas Aparecido Manzani Lisboa ◽  
Samira Rangel do Prado Frade ◽  
Luciano Flávio Neves Ramos ◽  
Bianca Pereira Franco de Souza ◽  
...  
Keyword(s):  
Experimental Design ◽  
Soil Fertility ◽  
Ammonium Nitrate ◽  
Plant Height ◽  
Nitrogen Fertilization ◽  
Dry Mass ◽  
Relative Increase ◽  
Productive Capacity ◽  
Higher Plant ◽  
Linear Interaction

The presence of toxic aluminum in the soil and N deficiency are one of the main causes of degradation of cultivated pastures, mainly of the Urochloa genus. The use of agricultural gypsum for restoring soil fertility is one of the ways to recover the productive capacity of degraded areas. Given the above, the work aims to assess pasture recovery with the application of agricultural gypsum associated with nitrogen fertilization. The experimental design was randomized blocks in a 3x4 factorial arrangement, that is, absence of nitrogen, 50 kg ha-1 in the form of ammonium nitrate and 50 kg ha-1 urea, interacting with four doses of agricultural gypsum, namely: 0 ; 750; 1500 and 3000 kg ha-1 and with four replications, totaling 48 plots. The use of urea as a source of N resulted in a higher plant height (PH) when compared to the use of ammonium nitrate, representing a relative increase of approximately 12% in relation to the control. Dose of 1730.8 kg ha-1 of agricultural gypsum resulted in a maximum production of 4.97 t ha-1 of dry pasture. The linear interaction of the use of ammonium nitrate with gypsum doses shows an extremely interesting synergistic potential with this source. For dry mass of culms (CDM), the use of urea had a PMTE of 1730.8 kg ha-1 of agricultural gypsum resulting in 2.38 t ha-1. The culms dry mass of (CDM) represented 47.9% of the total dry mass of the pasture.

scholarly journals DEVELOPMENT OF CORN HYBRIDS (Zea mays) UNDER INOCULATION OF DIAZOTROPHIC BACTERIA AND NITROGEN FERTILIZATION

2019 ◽  
Vol 17 (1) ◽  
pp. 71
Author(s):  
João Paulo Kruger Reznick ◽  
Volnei Pauletti ◽  
Daniel Malheiro Nascimento ◽  
Marcus Vinicius Cremonesi
Keyword(s):  
Zea Mays ◽  
Experimental Design ◽  
Factorial Design ◽  
Chlorophyll Content ◽  
Nitrogen Fertilization ◽  
Azospirillum Brasilense ◽  
Dry Mass ◽  
Diazotrophic Bacteria ◽  
Corn Hybrids ◽  
Leaf Chlorophyll

<br /><table class="data" width="100%"><tbody><tr valign="top"><td class="value">The aim of this work was to evaluate the development of corn genotypes under the effect of inoculation with <em>Azospirillum brasilense</em> in association with nitrogen fertilization. The experimental design was completely randomized in a factorial design (5x2x2) with three replications. Five corn hybrids were used, combined with two doses of nitrogen (N) (without N and with 100 kg ha<span>-1</span> N) and with two inoculation levels of <em>A.brasilense</em> (without and with inoculation). Plant stature and stem diameter at stadiums V8 and R1, leaf chlorophyll content at stadium R1 and dry mass at stadium R2 were evaluated. It was observed that when there was variation in the evaluated parameters, this was due to the different genetic materials and mainly due to the application of N. Inoculation with <em>A.brasilense</em> was not effective in altering the corn development.</td></tr></tbody></table>

scholarly journals EFFECT OF NITROGEN ON THE ACCUMULATION AND REUTILIZATION OF DRY MASS IN GRAIN SORGHUM

AGROFOR ◽  
2019 ◽  
Vol 4 (1) ◽  
Author(s):  
Svetla KOSTADINOVA ◽  
Zivko TODOROV ◽  
Ivan VELINOV
Keyword(s):  
Experimental Design ◽  
Nitrogen Fertilization ◽  
Block Design ◽  
Dry Mass ◽  
Grain Sorghum ◽  
Strong Positive Correlation ◽  
Nitrogen Rate ◽  
Strong Negative Correlation ◽  
Translocation Efficiency ◽  
Mass Accumulation

Accumulation and reutilization of dry mass until anthesis and during a grain fillingperiod of sorghum in response to nitrogen fertilization in rates 0, 60, 120, 180, 240and 300 kg N.ha-1 was studied in a field experiment. Grain sorghum hybrid ECAlize was grown under not- irrigated conditions in the experimental field ofAgricultural University of Plovdiv, Bulgaria. The experimental design was arandomized, complete block design with four replications with a size ofexperimental plots of 20 m2 after wheat as predecessor. Standard farming practicesfor the region of Southern Bulgaria were applied. It was established that nitrogenfertilization significantly increased the amount of accumulated dry mass at anthesisand total above ground dry mass at maturity compared to N0. Not significant effectof higher rates (180, 240 and 300 kg N.ha-1) on the dry mass accumulation ofsorghum was found. Average post anthesis net dry mass accumulation was 3291kg.ha-1 and its amount increased in parallel with the nitrogen rate up to N180. Thehighest dry mass translocation, translocation efficiency, and contribution of preanthesisassimilations of the grain was established at nitrogen rate N120 with values2073 kg.ha-1, 25.0 % and 41,8 %, respectively. Growth of sorghum at highernitrogen rates N180, N240, N300 significantly decreased efficiency of dry masstranslocation and contribution of pre-anthesis assimilations of the grain. Nitrogenfertilization had very strong negative correlation with dry mass translocationefficiency (-0.860*) and contribution of pre-anthesis assimilations of the grain (-0.863*). Very strong positive correlation (0.988**) was found between dry masstranslocation efficiency and contribution of pre-anthesis assimilations of the grain.

scholarly journals Density and sowing season of two Brachiaria species on the soybean culture

2013 ◽  
Vol 31 (3) ◽  
pp. 569-576 ◽  
Author(s):  
A.S. Saraiva ◽  
E.A.L. Erasmo ◽  
J.F. Mata ◽  
B.F. Dornelas ◽  
D.F. Dornelas ◽  
...  
Keyword(s):  
Experimental Design ◽  
Plant Height ◽  
Biomass Production ◽  
Dry Mass ◽  
Growth And Yield ◽  
Grass Species ◽  
Brachiaria Brizantha ◽  
Brachiaria Ruziziensis ◽  
Sowing Dates ◽  
Sowing Season

The aim of this study was to evaluate the growth and yield of soybean cultivar M-8766 in consortium with Brachiaria brizantha. BRS Piata and Brachiaria ruziziensis at different densities and sowing dates. The experimental design was randomized blocks with treatments arranged in a factorial 2 x 2 x 3 with four replications. Used as factors grass species (Brachiaria brizantha Piata and Brachiaria ruziziensis BRS) intercropped with soybean M-8766, sowing dates (12 and 24 days after soybean emergence) and three seeding rates (0, 5, 10 kg ha-1 of seed). At 71 days after soybean emergence were evaluated plant height, stem diameter, dry mass of leaves, stems and shoots, and 4 months after sowing determined the weight of 100 grains and soybean yield. The results showed that when seeded at a density of 10 kg ha-1 at 12 and 24 DAE soy, Brachiaria brizantha. BRS Piata caused reduction in yield in the order of 6.71% and 3.03% respectively, while the Brachiaria ruziziensis was one that caused a greater reduction in productivity in the order of 13.42 and 16.23%, respectively, of these values expression when considering the price of soybean sack. B. ruziziensis expressed less competitive with soybean. However, the large biomass production of this grass provides deployment system till the next harvest.

scholarly journals INITIAL DEVELOPMENT OF GABIROBA (Campomanesia adamantium) ACCORDING TO FERTILIZATION WITH NITROGEN AND PHOSPHORUS

2021 ◽  
Vol 8 (2) ◽  
pp. e5825
Author(s):  
Jéssica Rodrigues de Mello Duarte ◽  
Scarlet De Aguiar Basílio ◽  
Nei Peixoto ◽  
Mariana Pina da Silva Berti
Keyword(s):  
Experimental Design ◽  
Plant Height ◽  
Nitrogen Fertilization ◽  
Stem Diameter ◽  
Nitrogen And Phosphorus ◽  
Initial Development ◽  
Tukey Test ◽  
Number Of Leaves ◽  
Plant Emergence ◽  
Different Doses

Campomanesia adamantium (Cambess.) Berg O. is a native of Savanna, popularly known as gabiroba, guavira, or gabiroba-do-campo, and has many uses, with its fruit being consumed fresh or processed. This study aimed to evaluate different doses of phosphorus and nitrogen in the initial development of gabiroba (Campomanesia adamantium) cultivated in pots. Five doses of phosphorus (0, 100, 200, 300, and 400kg ha-1 of P2O5) and three doses of nitrogen (0, 100, and 200 kg ha-1of N) were tested. The experimental design used was completely randomized in a 5x3 factorial scheme with six replications. The evaluations were carried out 120 days after plant emergence, and the variables analyzed were stem diameter, plant height, and number of leaves. Data were subjected to analysis of variance and F-test. The means were compared by the Tukey test at p0.05. Regression analyzes were adjusted for phosphorus doses. The gabiroba responds significantly to the addition of phosphorus, with the dose of 400 kg ha-1 of P2O5 providing the highest height and the dose of 300 kg ha-1 of P2O5 providing the greatest stem diameter and the number of leaves. Up to 120 days old, gabiroba seedlings do not respond significantly to nitrogen fertilization.

scholarly journals Efeito da adubação nitrogenada na formação de mudas de goiabeira irrigadas com águas salinizadas

2015 ◽  
Vol 10 (4) ◽  
pp. 42 ◽  
Author(s):  
E. M. Silva ◽  
R. G. Nobre ◽  
L. P. Souza ◽  
F. W. A. Pinheiro ◽  
A. B. A. Andrade
Keyword(s):  
Electrical Conductivity ◽  
Leaf Area ◽  
Plant Height ◽  
Irrigation Water ◽  
Nitrogen Fertilization ◽  
Block Design ◽  
Dry Mass ◽  
Experimental Unit ◽  
Randomized Block Design ◽  
Irrigation Water Salinity

<p>Além de favorecer o desenvolvimento e a produção das culturas, a adubação tem sido considerada uma técnica capaz de reduzir o efeito da salinidade nas plantas. Neste sentido, desenvolveu-se o trabalho<strong> </strong>para avaliar a influência de doses de nitrogênio na formação de mudas de goiabeira cv. Paluma irrigadas com águas de diferentes salinidades. O experimento foi desenvolvido em casa de vegetação do Centro de Ciências e Tecnologia Agroalimetar da UFCG, Pombal, PB com delineamento experimental em blocos casualizados, em esquema fatorial 5 x 4, sendo os tratamentos correspondentes aos níveis de condutividade elétrica da água (CEa) de 0,3; 1,1; 1,9; 2,7 e 3,5 dS m<sup>-1</sup> associados a 70, 100, 130 e 160% da dose recomendada de nitrogênio (N) para mudas de goiabeira cv. Paluma, com quatro repetições, e cinco plantas por unidade experimental. Aos 180 dias após a emergência, a adubação nitrogenada na dose de 773 mg de N dm<sup>-3</sup> reduz o efeito da salinidade da água de irrigação sobre o diâmetro do caule das mudas. As plantas adubadas com as doses variando de 541 a 618,4 mg de N dm<sup>-3</sup> atingem maior crescimento em altura de planta, número de folhas e área foliar. A área foliar e a massa seca total de mudas de goiabeira atingem maiores valores no nível de CEa de 1,3 dS m<sup>-1</sup>.</p><p align="center"><strong>Effect of nitrogen fertilization in the formation of guava seedlings irrigated with salted water</strong></p><p><strong>Abstract</strong><strong>: </strong>In addition to favoring the development and production of crops, the fertilizer has been considered a technique capable to reduce the effect of salinity on plants. The experiment was conducted in a greenhouse of the ‘Centro de Ciências e Tecnologia Agroalimentar’ of UFCG, Pombal, PB in a randomized block design a 5 x 4 factorial, with the treatments corresponding to the electrical conductivity of irrigation water (ECw) 0.3; 1.1; 1.9; 2.7 and 3.5 dS m<sup>-1</sup> associated with doses of 70, 100, 130 and 160% of recommended nitrogen (N) for guava seedlings Paluma,  with four replications, using five plants per experimental unit. At 180 days after emergence, the nitrogen fertilization at a dose of 773 mg N dm<sup>-3</sup> reduces the effect of irrigation water salinity on the stem diameter of seedlings. The plants fertilized with doses ranging from 541 at 618.4 mg of the N dm<sup>-3</sup> reach higher growth in plant height, leaf number and leaf area. The leaf area and total dry mass of guava seedlings reach higher values at the ECw level of 1.3 dS m<sup>-1</sup>.</p>

scholarly journals Parcelamento de doses da adubação nitrogenada na produtividade e qualidade fisiológica de sementes de trigo

2020 ◽  
Vol 16 (4) ◽  
pp. 80-88
Author(s):  
Jéssica de Lucena Marinho ◽  
José Henrique Bizzarri Bazzo ◽  
Carolina Pereira Cardoso ◽  
Claudemir Zucareli
Keyword(s):  
Experimental Design ◽  
Nitrogen Fertilization ◽  
Dry Mass ◽  
Wheat Cultivars ◽  
Seed Productivity ◽  
Correct Dose ◽  
Physiological Quality ◽  
The Right ◽  
Wheat Seeds

The application of nitrogen (N) in the correct dose and at the right time can favor the productivity and quality of wheat seeds. In this sense, the aim was to evaluate the effect of splitting and doses of nitrogen fertilization on the productivity and physiological quality of seeds of wheat cultivars. The seeds were produced at the National Soybean Research Center, in Londrina-PR, in a randomized block experimental design in a 2 × 7 factorial scheme, with four replications. The factors were constituted by two cultivars (BRS Gralha-azul and BRS Sabiá) and seven combinations of doses and splitting of nitrogen fertilization (0 kg ha-1, 40 kg ha-1at tillering, 80 kg ha-1at tillering, 40 kg ha-1at sowing, 80 kg ha-1at sowing, 40 kg ha-1at sowing + 40 kg ha-1at tillering, 20 kg ha-1at sowing + 60 kg ha-1at tillering). The following were evaluated: productivity, germination, first germination count, length and dry mass of seedlings, emergence of seedlings in sand and emergence speed index. The data were subjected to analysis of variance with comparison of means by the F test, between genotypes, and Scott-Knott, between N combinations. The effect of nitrogen fertilization on seed productivity varies with the cultivar. The application of 80 kg ha-1N at sowing favors the vigorof the seeds for BRS Gralha-azul, and the application of 40 kg ha-1N at sowing, or 80 kg ha-1N at tillering favors the production of quality seeds for BRS Sabiá. The inadequate supply of N impairs the physiological quality of seeds produced.

scholarly journals Efficiency in the use of phosphorus by cowpea genotypes

2019 ◽  
Vol 35 (4) ◽  
Author(s):  
Idaiane Costa Fonseca Almeida ◽  
Leilson Costa Grangeiro ◽  
Fábio Henrique Tavares Oliveira ◽  
Valdívia de Fátima Lima Sousa ◽  
Matheus Freitas Souza
Keyword(s):  
Experimental Design ◽  
Soil Fertility ◽  
Vigna Unguiculata ◽  
Block Design ◽  
Dry Mass ◽  
Good Ability ◽  
P Accumulation ◽  
Randomized Complete Block Design ◽  
Pod Number ◽  
Number Of Seeds

Cowpea (Vigna unguiculata (L.) Walp.) is an edible legume with good ability to fix nitrogen and not demanding soil fertility. However, some genotypes may have a greater ability to utilize the nutrients available in the soil for their growth. Thus, the objective of this work was to evaluate the efficiency of phosphorus (P) use in genotypes of cowpea. The experiment was conducted in the field and the experimental design was a randomized complete block design with four replicates arranged in a 2 x 5 factorial scheme. The treatments consisted of two P doses (0 and 60 kg ha-1 of P2O5) and five bean genotypes (Paulistinha, BRS Xiquexique, Pingo de Ouro, Corujinha, and Costela de Vaca). Each plot was formed by four plant rows, measuring 3.0 m in length, spaced 1.0 x 0.3 m, and with two plants per hole. The genotypes responded significantly to the increase in P levels in the soil, with increases in the number of seeds per pod, number of pods per plant, productivity, dry mass, and plant P accumulation. "BRS Xiquexique" was efficient and responsive, and it could be indicated as the most appropriate for cultivation in the region. "Corujinha" is the most suitable cultivar for production in high levels of P among the creole genotypes evaluated. "Costela de Vaca" and "Paulistinha" can be indicated for low P production in the soil. low P production.

scholarly journals Chives production according to planting density

2020 ◽  
Vol 9 (9) ◽  
pp. e108997085
Author(s):  
Bruno Novaes Menezes Martins ◽  
Jean Lucas Mendes Castro ◽  
Joara Secchi Candian ◽  
Leticia Galhardo Jorge ◽  
Antonio Ismael Inácio Cardoso
Keyword(s):  
Experimental Design ◽  
Plant Height ◽  
Plant Density ◽  
Block Design ◽  
Leaf Number ◽  
Planting Density ◽  
Higher Plant ◽  
Randomized Block Design ◽  
Shoot Weight ◽  
The Ideal

In the search for optimization of production, the use of the ideal plant density is of fundamental importance. So, the objective of this research was to evaluate the effect of planting densities on chive production, varying the spacing between holes and the number of plants per hole. The experimental design was a randomized block design, with twelve treatments in the 4 x 3 factorial scheme, with four spacings between holes (0.05, 0.08, 0.11 and 0.14 m) and three numbers of plants per hole (2, 3 and 4 plants per hole), with four replicates. Leaf number, plant height, leaf diameter, fresh and dry shoot weight (g plant-1) and yield (t ha-1) were evaluated. It was observed that with a greater number of plants per hole, there is reduction in the production per plant, however, the yield is higher. The smaller the spacing, the greater the yield of chives. So it is possible to recommend the higher plant density for chive production, and the use of three or four plants per hole.

scholarly journals The Effects of Combining Farm Yard Manure, Starter Nitrogen, Phosphorus and Zinc on Growth and Yield of Green Grams

2020 ◽  
pp. 1-9
Author(s):  
Esther Mwende Muindi ◽  
Consalata Mueni Muindi ◽  
James Ndiso
Keyword(s):  
Soil Fertility ◽  
Grain Yield ◽  
Plant Height ◽  
Block Design ◽  
Green Gram ◽  
Growth And Yield ◽  
Farm Yard Manure ◽  
Nitrogen And Phosphorus ◽  
Higher Plant ◽  
Number Of Leaves

Green gram (Vigna radiate l.) is an important legume grown within Kenyan Coast. Despite the crops importance as a locally available nutrient supplement, its production is constrained by declining soil fertility caused by poor agronomic practices. A field experiment was established during the March-June, 2019 long rains in multi locational sites at Matuga and Mivumoni in Kwale County. The experiment was aimed at investigating the effect of integrating farm yard manure, zinc and starter nitrogen and phosphorus on soil fertility, growth and yield of green grams. The experiment was laid out in Randomized Complete Block Design (RCBD) with three replications. Treatments included: Zinc, NP, Manure, Manure+ zinc, NP+ zinc and control. Green gram variety tested was KS20. Data collected included: Initial soil chemical properties, plant height, number of leaves per plant, number of pods per plant, grains per pod, weight of 100 grains, biomass and grain yield. Results showed that Zinc+ manure significantly promoted the highest plant height, number of leaves, grain yield. Plots treated with zinc+ manure recorded 32% higher plant height and 46% higher grain yield compared to NP applied plots. In conclusion, integration of manure and zinc was most effective in promoting green grams growth and yield. Since, this research was carried out on station in ferralic, chromic Luvisols; there is need for long term trials in farmers’ fields with diverse soil properties and environmental conditions.

scholarly journals Molybdenum application forms associated to topdressing nitrogen fertilization in the production of maize crops

2017 ◽  
Vol 3 (2) ◽  
pp. 105
Author(s):  
Renê José dos Santos ◽  
José Henrique Bizzarri ◽  
André Prechlak Barbosa ◽  
Claudemir Zucareli
Keyword(s):  
Experimental Design ◽  
Grain Yield ◽  
Plant Height ◽  
Nitrogen Fertilization ◽  
Foliar Application ◽  
Stem Diameter ◽  
Maize Crop ◽  
Foliar Treatment ◽  
Application Forms

Nitrogen fertilization associated to the application of molybdenum (Mo) can increase grain yield in maize crops. Therefore, the objective of this study was to evaluate the effect of molybdenum application forms associated to topdressing nitrogen fertilization on production components and maize crops grain yield. The experiment was conducted with the cultivar Pioneer® 30F53H, under a randomized blocks experimental design, with subdivided parcels and four replications. Four forms of Mo applications were evaluated in each parcel: control (without Mo); seeds treatment (40 g ha-1 Mo); foliar treatment (40 g ha-1 Mo); seeds treatment (20 g ha-1 Mo) plus foliar treatment (20 g ha-1 Mo), using potassium molybdate as Mo source. The sub-parcels received four dosages of nitrogen (N), in topdressing (0, 80, 160 and 240 kg ha-1 N), in the form of urea. The experiment evaluated plant height, ear insertion height, stem diameter, number of grains per ear, 100 grains mass and grain yield in maize crops. The increase in N dosages in topdressing increases plant height, ear insertion height, stem diameter, number of grains per ear, 100 grains mass and maize crop grains yield. The application of molybdenum improves N absorption by maize crops. When applied via seeds treatment, Mo brings better results to foliar application in partial or total dosages.

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