scholarly journals PRODUÇÃO E MATÉRIA SECA DO INHAME FERTIRRIGADO COM BIOFERTILIZANTE

Irriga ◽  
2021 ◽  
Vol 1 (4) ◽  
pp. 748-753
Author(s):  
Edimir Xavier Leal Ferraz ◽  
Raquele Mendes de Lira ◽  
Antônio Henrique Cardoso do Nascimento ◽  
Isaac Lima Simões De Vasconcelos ◽  
Roberto Elias Dos Santos ◽  
...  
Keyword(s):  
Experimental Design ◽  
Analysis Of Variance ◽  
Dry Matter ◽  
Polynomial Regression ◽  
F Test ◽  
Average Production ◽  
Different Doses

PRODUÇÃO E MATÉRIA SECA DO INHAME FERTIRRIGADO COM BIOFERTILIZANTE     EDIMIR XAVIER LEAL FERRAZ1; RAQUELE MENDES DE LIRA1; ANTONIO HENRIQUE CARDOSO DO NASCIMENTO2; ISAAC LIMA SIMÕES DE VASCONCELOS1; ROBERTO ELIAS DOS SANTOS1 E IRLÂNDIO DE SÁ SANTANA1   1 Departamento de Agronomia, Universidade Federal Rural de Pernambuco (UFRPE-UAST), Av. Gregório Ferraz Nogueira, s/n, CEP 56909-535, Serra Talhada, Pernambuco, Brasil. 2 Departamento de Zootecnia, Universidade Federal Rural de Pernambuco (UFRPE-UAST), Av. Gregório Ferraz Nogueira, s/n, CEP 56909-535, Serra Talhada, Pernambuco, Brasil.     1 RESUMO   Objetivou-se avaliar a influência da aplicação de diferentes doses de biofertilizante via fertirrigação, sobre a produção e acúmulo de matéria seca de rizomas de inhame. O delineamento experimental utilizado foi em blocos casualizados, com cinco tratamentos e quatro repetições. Os tratamentos foram compostos por cinco doses de biofertilizante (D1 = 0 ml planta-1; D2 = 30 ml planta-1; D3 = 60 ml planta-1; D4 = 90 ml planta-1; D5 = 120 ml planta-1). Aos 210 dias após o plantio realizou-se a colheita e através de pesagem com balança de precisão avaliou-se a produção e a matéria seca dos rizomas de inhame. Esses dados foram submetidos a análise de variância pelo teste F a 1 e 5%, e regressão polinomial. Constatou-se que o aumento das doses de biofertilizantes aplicado via fertirrigação possibilitou incremento na produção e matéria seca, mas com valores inferiores à média produtiva.   Palavras chaves: Dioscorea cayennensis Lam., Fertilidade, Irrigação.     FERRAZ, E.X.L.; LIRA, R.M.; NASCIMENTO, A.H.C; VASCONCELOS, I.L.S.; SANTOS, R. E.; SANTANA, I.S. YAM PRODUCTION AND DRY MATTER FERTILIZED WITH BIOFERTILIZER     2 ABSTRACT   This study aimed to evaluate the influence of the application of different doses of biofertilizer via fertigation on the production and accumulation of dry matter of yam rhizomes. The experimental design used was in a randomized block, with five treatments and four replications. The treatments consisted of five doses of biofertilizer (D1 = 0 ml. plant-1; D2 = 30 ml plant-1; D3 = 60 ml plant-1; D4 = 90 ml plant-1; D5 = 120 ml plant-1). At 210 days after planting, the harvest was carried out and, by weighing with a precision scale, the production and dry matter of the rhizomes of yam were evaluated. These data were submitted to analysis of variance by the F test at 1 and 5%, and polynomial regression. It was found that the increase in the doses of biofertilizers applied via fertigation allowed an increase in production and dry matter, but with values below the average production.   Keywords: Dioscorea cayennensis Lam., Fertility, Irrigation. 

scholarly journals Tolerance of Annual Winter Species to Protoporfirinogen Oxidase Inhibiting Herbicides (Protox)

2018 ◽  
Vol 36 (0) ◽  
Author(s):  
C. ALVES ◽  
L. GALON ◽  
R.R. KAIZER ◽  
F.L. WINTER ◽  
C.M. HOLZ ◽  
...  
Keyword(s):  
Leaf Area ◽  
Plant Species ◽  
Analysis Of Variance ◽  
Dry Matter ◽  
Stem Diameter ◽  
F Test ◽  
Tolerant Species ◽  
Randomized Design ◽  
Completely Randomized Design ◽  
Linear Regressions

ABSTRACT: The use of plant species for the phytoremediation of soils contaminated with herbicides is an alternative that has been emphasized to minimize the effects of the persistence of agrochemicals in the environment. The objective of this study was to evaluate the tolerance potential of winter species in soils contaminated with sulfentrazone and fomesafen. The experiment was in a completely randomized design with four replications. Doses of fomesafen (0.0, 0.125, 0.250, and 0.5 kg ha-1) and sulfentrazone (0.0, 0.3, 0.6 and 1.2 kg ha-1) were applied during the pre-emergence of phytoremediate species (black oat, vetch, birdsfood trefoil, radish and lupin). Forty five days after the emergence of the species, the phytotoxicity (%), leaf area (cm2), stalk and/or stem diameter (mm), height (cm) and dry matter (g) variables of the plants were evaluated. Data were submitted to analysis of variance by F test; when significant, linear or non linear regressions were applied to evaluate the effect of herbicide doses on the studied species. Birdsfood trefoil was the less tolerant species to fomesafen and sulfentrazone. Black oat was less affected by the application of fomesafen doses, but it was highly susceptible to sulfentrazone. Radish presented tolerance only up to the fomesafen dose of 0.25 kg ha-1; as for sulfentrazone, the species showed tolerance. The most tolerant species to fomesafen and sulfentrazone, regardless of the dose, was the lupine, which is a possible alternative for the phytoremediation of soils contaminated with these herbicides.

scholarly journals EFFECT OF DIFFERENT DOSES OF VERMICOMPOST ON THE GROWTH OF APULEIA LEIOCARPA (VOG) MACBR. SEEDLINGS

2005 ◽  
Vol 3 (2) ◽  
pp. 11 ◽  
Author(s):  
Marcos Vinicius Winckler Caldeira ◽  
Peter Spathelf ◽  
Leonir Rodrigues Barichello ◽  
Hamilton Luiz Munari Vogel ◽  
Mauro Valdir Schumacher
Keyword(s):  
Experimental Design ◽  
Biomass Production ◽  
Dry Matter ◽  
Growth Response ◽  
Diameter Growth ◽  
Seedling Production ◽  
Seedling Germination ◽  
Different Doses

The objective of this study was to determine the best vermicompost dose for seedling production of Apuleia leiocarpa. The experiment consisted of five treatments, which were conducted in a greenhouse. The following doses of vermicompost were tested: control (without vermicompost); 10% vermicompost; 20% vermicompost; 30% vermicompost and 40% vermicompost of the total container volume (185 cm3). The experimental design was entirely randomised. The substratum used was bark of Pinus sp., which was triturated and composted. A hundred days after seedling germination, the following variables were analysed: height and diameter growth, above ground dry matter, root dry matter and total dry matter. The 30% vermicompost doses showed to be optimum in growth response and biomass production of Apuleia leiocarpa seedlings.

scholarly journals Control of Dichelops melacanthus with insecticides associated with sulphur applied in different times in corn

2017 ◽  
Vol 10 (1) ◽  
pp. 67
Author(s):  
J. C. Guerreiro ◽  
G. B. Silva ◽  
A. P. Azevedo ◽  
R. R. Espessato ◽  
A. T. Padovan ◽  
...  
Keyword(s):  
Experimental Design ◽  
Analysis Of Variance ◽  
Initial Phase ◽  
Stink Bug ◽  
Stink Bugs ◽  
F Test ◽  
Visual Evaluation ◽  
Corn Crop ◽  
Important Pest

The stink bug Dichelops melacanthus has become an important pest for corn crop and it has been causing several losses even in the initial phase of the crop. The objective of the experiment was the evaluation of effectiveness of the insecticides on the control of D. melacanthus in corn by adding of sulfur or not, in different control times. In order to evaluate the effect of the insecticide by adding or not sulfur on the control of D. melacanthus, 17 treatments with 4 different insecticides (with and without sulfur, in two different control times plus control) were used to get the results. The experimental design used was the randomized blocks, with four repetitions. The evaluation of effectiveness on stink bugs control was gotten by visual evaluation of the symptoms at 6, 13 and 20 days after emergence (DAE). Analysis of variance by F test (Anova) was done and the averages compared through Scott-knott test (p≤0,05). The pulverization of insecticides was more effective when it was done 4 (DAE), reducing the symptoms and injuries occasioned by the stink bug D. melacanthus and the mortality of damaged plants. The insecticide bifentrina+carbosulfano showed the higher effectiveness on stink bug control. To conclude, the use of sulfur associated to insecticides did not present a significant effect.

scholarly journals Bioactivator on physiological performance of tomato and onion seeds

2018 ◽  
Vol 9 (1) ◽  
pp. 19-25
Author(s):  
Lilian Madruga Tunes ◽  
Andréia Da Silva Almeida ◽  
Géri Eduardo Meneghello ◽  
Francisco Amaral Villela ◽  
Vanessa Nogueira Soares ◽  
...  
Keyword(s):  
Experimental Design ◽  
Orthogonal Polynomials ◽  
Analysis Of Variance ◽  
Environmental Conditions ◽  
Accelerated Aging ◽  
Cold Test ◽  
Germination Percentage ◽  
Maximum Efficiency ◽  
F Test ◽  
Physiological Performance

Vegetable seeds have high commercial value, in the field after sowed seeds were exposed to unfavorable environmental conditions capable of causing reductions in the yield. Thiamethoxam is a bio-activator that may confer tolerance to stresses. In this regard, we aimed to evaluate the influence of thiamethoxam in the physiological performance of four lots of tomato and onion seeds. Seeds were treated with five doses of thiamethoxam, 0.0; 0.2; 0.4; 0.6 and 0.8 ml of product per 1000 seeds. The effects of the seed treatments were evaluated by the assessments of the first count of germination, sprouting test, cold test, accelerated aging and seedling`s emergence in the greenhouse. The experimental design was completely randomized, with four replicates per lot and by species. Data were submitted to analysis of variance and adjusted by orthogonal polynomials, using the adjusting equation based on the significance of F test at 5% probability. The bioactivator provided an increase in germination percentage, the first count of ermination, germination after accelerated aging, cold test and seedling’s emergence for low vigor seed lots. The bioactivator thiamethoxam stimulates the physiological performance of tomato and onion seeds. Doses of 0.5 to 0.6 mL of thiamethoxam per 1000 seeds of tomato and onion correspond to technical maximum efficiency.

scholarly journals Production of lettuce changes (lactuca sativa) submitted to different doses of Silicon

2020 ◽  
Vol 13 (1) ◽  
pp. 1
Author(s):  
T. O. D. Gonzaga ◽  
C. Araujo ◽  
A. L. Andrade ◽  
J. M. Dos Santos ◽  
G. B. Silva ◽  
...  
Keyword(s):  
Experimental Design ◽  
Analysis Of Variance ◽  
Lactuca Sativa ◽  
Dry Mass ◽  
Viable Alternative ◽  
Seedling Production ◽  
Tukey Test ◽  
Number Of Leaves ◽  
Shoot Mass ◽  
Different Doses

The objective of this work was to evaluate the effect of different doses of silicon on the production of lettuce seedlings. The treatments were arranged in a 4x2 factorial scheme, totaling 8 treatments. The first factor corresponded to 4 Si doses (Ca silicate) added to the substrate for seedling production (0; 13.3; 32.3 and 53.2 g.kg-1 of Si on the substrate). The second factor corresponded to two varieties of lettuce, being Mônica SF31 (Crespa) and Rafaela (Americana). The experimental design was the completely randomized, with 4 replicates. The number of leaves (NF), fresh aerial mass (MFPA), dry shoot mass (MSPA), fresh radicular mass (MFRA) and root dry mass (MSRA) were evaluated. Data were submitted to analysis of variance by the F test, and the means of the treatments compared by the Tukey test at 5% probability. The seedlings of the Mônica SF31 and Rafaela lettuce varieties do not present differences regarding the Si requirement for the production of MFPA, MSPA, MFRA and MSRA. The application of Si to the substrate can be a viable alternative for the production of lettuce seedlings with higher NF, MFPA, MSPA, MFRA and MSRA. Doses of 32.0 to 43.7 g.kg-1 of Si in the substrate are suitable for higher production of MFPA, MSPA, MFRA and MSRA of lettuce Mônica SF31. Doses of 31.5 to 39.8 g.kg-1 of Si in the substrate are suitable for higher production of MFPA, MSPA, MFRA and MSRA of Rafaela lettuce seedlings.

scholarly journals Brazil nut oil in diets for breeder cocks

2017 ◽  
Vol 40 ◽  
pp. 37472
Author(s):  
João Paulo Ferreira Rufino ◽  
Frank George Guimarães Cruz ◽  
Ramon Duque Melo ◽  
Julmar Da Costa Feijó ◽  
Lucas Duque Melo ◽  
...  
Keyword(s):  
Experimental Design ◽  
Rhode Island ◽  
Reproductive Performance ◽  
Polynomial Regression ◽  
Brazil Nut ◽  
Feed Conversion ◽  
Cholesterol Levels ◽  
Blood Ph ◽  
Semen Volume ◽  
Testicular Morphology

 This study aimed to evaluate the inclusion of Brazil nut oil in diets for breeder cocks on performance, semen analyses, biochemical serum profile and testicular morphology. Forty-two Rhode Island Red breeder cocks with 40 weeks of age were used. The experimental design was completely randomized consisting of seven levels of Brazil nut oil (0; 0.30; 0.60; 0.90; 1.20; 1.50 and 1.80%) in the diets. Data collected were evaluated by polynomial regression. Differences (p < 0.05) were detected in feed conversion, semen volume, motility, vigor, pH, swirling and concentration, in which the inclusion of Brazil nut oil in the diets improved the reproductive performance. Differences (p < 0.05) were also detected in the biochemical serum profile (triglycerides, cholesterol and blood pH); the inclusion of Brazil nut oil caused a large increase in blood triglycerides and cholesterol levels, consequently, changing the blood pH. The Brazil nut oil can be used as an energetic additive in diets given to breeder cocks, promoting better reproductive performance, without changing semen and testicular morphology, but altering the biochemical serum profile of the birds.   

Wetting and the physiological responses of grain-fed cattle in a heated environment

2004 ◽  
Vol 55 (3) ◽  
pp. 253 ◽  
Author(s):  
John B. Gaughan ◽  
M. Shane Davis ◽  
Terry L. Mader
Keyword(s):  
Heat Stress ◽  
Experimental Design ◽  
Rectal Temperature ◽  
Environmental Conditions ◽  
Dry Matter ◽  
Physiological Responses ◽  
Dry Matter Intake ◽  
Metabolic Responses ◽  
Hot Days ◽  
Carry Over

A controlled crossover experimental design was used to determine the effect of altered water sprinkling duration on heifers subjected to heat stress conditions. Heifers were subjected to 3 days of thermoneutral conditions followed by 3 days of hot conditions accompanied by water sprinkling between 1300 and 1500 h (HOT1–3). Then on the following 2 days (HOT4–5), environmental conditions remained similar, but 3 heifers were sprinkled between 1200 and 1600 h (WET) and 3 were not sprinkled (NONWET). This was followed by a 1-day period (HOT6) in which environmental conditions and sprinkling regimen were similar to HOT1–3. Rectal temperature (RT) was collected hourly, and respiration rate (RR) was monitored every 2 h on HOT Days 2, 4, 5, and 6. Dry matter intake and rate of eating were also determined. Sprinkling reduced RR and RT (P < 0.01) of all heifers during HOT1–3. During HOT4–5, WET heifers had lower (P < 0.05) RT than NONWET from 1300 to 700 h and lower RR from 1400 to 2000 h. Dry matter intake of NONWET heifers was reduced by 30.6% (P < 0.05) during HOT4–5 and by 51.2% on HOT6. On HOT4–5 the dry matter intakes of WET heifers were similar to intakes under thermoneutral conditions. During HOT6, RT was again reduced following sprinkling in all heifers. Comparison of RT and RR of NONWET and WET heifers on HOT1–3 v. HOT6 revealed that under similar environmental conditions, NONWET heifers had increased RT, partially due to carry-over from HOT4–5. However, NONWET heifers had 40% lower feed intake but tended to have lower RR on HOT6 v. HOT1–3. Only RR of WET heifers was greater on HOT6, possibly a result of switching from a 4-h back to a 2-h sprinkling period, while maintaining a 62% greater intake (5.80 v. 3.58 kg/day) than NONWET heifers during this time. Results suggest that inconsistent cooling regimens may increase the susceptibility of cattle to heat stress and elicit different physiological and metabolic responses.

Factors affecting the yield of winter cereals in crop margins

2000 ◽  
Vol 135 (4) ◽  
pp. 335-346 ◽  
Author(s):  
A. WILCOX ◽  
N. H. PERRY ◽  
N. D. BOATMAN ◽  
K. CHANEY
Keyword(s):  
Soil Compaction ◽  
Dry Matter ◽  
Field Experiments ◽  
Polynomial Regression ◽  
Negative Relationship ◽  
Fertilizer Application ◽  
Winter Cereal ◽  
Edge Field ◽  
Winter Cereals ◽  
Non Linear

Yields of arable crops are commonly lower on the crop margins or headlands, but the nature of the relationship between yield and distance from the crop edge has not been clearly defined, nor have the reasons for lower marginal yields. Surveys of 40 winter wheat headlands were carried out in 2 years to determine how yield changed with distance, and what factors might influence this relationship. Two field experiments were also conducted over 3 years in winter cereal headlands, in which the effect of distance was measured under conservation headland and conventional (fully sprayed) management.Yields in the headland surveys varied from 0·8 to 10·2 t/ha. An inverse polynomial regression model was fitted to yield and weed data. Best fits were obtained by using separate parameters for each site. Adjusting yields to take account of weed dry matter improved the non-linear fit between yield and distance from crop edge. Field experiments provided similar results but the non-linear relationship was not as apparent.There was a negative relationship between soil compaction, as measured by a cone penetrometer, and yield in one field experiment, where soil density values were relatively constant. No relationship was found between pattern of nitrogen fertilizer application and yield. Conservation headland management resulted in lower yield at one experimental site, especially in the third year, but not at the other site. Where yields were affected, weed dry matter was higher in conservation headland plots than in fully sprayed plots.Although greater weed competition appears to account for at least part of the observed yield reductions on headlands, the role of other factors, particularly soil compaction, needs further study. Increased weed infestation may be an indirect result of reduced crop competition caused by other adverse conditions.

Sign in / Sign up

Export Citation Format

Share Document