Effect of Salinity and Potassium on Phytomass and Quality of Guava Rootstocks

Potassium fertilization is one of the main techniques that has been studied to mitigateeffects of salt stress in plants, probably because potassium reduces the toxic effect of sodium by competitive inhibition and provides greater tolerance to genotypes of plants to salinity. Hence, this study aimed to evaluate the effect of different salinities of irrigation water in the formation of phytomass and quality of rootstocks of guava cv. Paluma, fertilized with increasing doses of potassium, in an experiment conducted using eutrophic Fluvic Neosol with sandy loam texture under greenhouse conditions, in the municipality of Pombal-PB, Brazil. The experimental design was randomized blocks in 5 × 4 factorial scheme, and the treatments resulted from the combination of five levels of irrigation water electrical conductivity (ECw = 0.3; 1.1; 1.9; 2.7 and 3.5 dS m-1) and four K doses (70, 100, 130 and 160% of K), in which the dose of 100% K corresponded to 726 mg of K dm-3 of substrate, with four replicates and two plants evaluated in each plot. Irrigation with water salinity from 0.3 dS m-1 compromises the total dry matter accumulation and the Dickson quality index of guava rootstocks cv. Paluma at 225 days after emergence (DAE), independent of potassium fertilization. Fertilization with different potassium doses did not promote differences in phytomasses and quality of rootstocks. There was no significant effect of interaction (salt × doses of K) on the studied variables.

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QUALITY OF CUCUMBER SEEDLINGS GROWN IN DIFFERENT CONTAINERS

JOURNAL OF NEOTROPICAL AGRICULTURE ◽

10.32404/rean.v3i1.820 ◽

2016 ◽

Vol 3 (1) ◽

pp. 33-38

Author(s):

Bruna Finotii Fonseca Reis de Mello ◽

Mateus Vieira Trevisan ◽

Fábio Steiner

Keyword(s):

Quality Index ◽

Dry Matter ◽

Vegetable Production ◽

High Quality ◽

Cucumis Sativus L ◽

Cucumber Seedlings ◽

Key Factor ◽

Design Characteristics ◽

Dickson Quality Index

The use of high quality seedlings is a key factor for the success of vegetable production, and the container size and design characteristics of the containers are important determinants of seedling quality. A experiment was conducted to investigate the effects of different container types on quality of cucumber seedlings (Cucumis sativus L., cv. Aodai Melhorado). Seedlings were grown in a seedling nursery with shadow protection at 50% in different containers: (i) 128-cell trays; (ii) 64-cell trays; (iii) tubes of 120 cm3; and (iv) plastic cups of 180 cm3. The plant height, diameter, root length, shoot dry matter, root dry matter, sturdiness quotient (SQ), shoot:root dry matter ratio (SRR) and Dickson quality index (DQI) were measured at 21st days after sowing. The production of cucumber seedlings in 64-cell trays, polypropylene tubes of 120 cm3 and plastic cups of 180 cm3 resulted in the highest values for the majority of investigated traits. The tray of 128-cells results in lower quality cucumber seedlings compared to other containers. Tubes with volume of 120 cm3 and plastic cups with volume of 180 cm3 are more appropriate containers for the production of high quality cucumber seedlings. The DQI is a good indicator of the standard of quality of cucumber seedlings.

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Biomass and Rootstock Quality of Guava (Psidium guajava L.) Saline Water Irrigated under Nitrogen Fertilization

Journal of Agricultural Science ◽

10.5539/jas.v9n11p162 ◽

2017 ◽

Vol 9 (11) ◽

pp. 162

Author(s):

Evandro M. Da Silva ◽

Reginaldo G. Nobre ◽

Geovani S. De Lima ◽

Hans R. Gheyi ◽

Leandro De P. Souza ◽

...

Keyword(s):

Electrical Conductivity ◽

Dry Matter ◽

Root Zone ◽

Saline Water ◽

Psidium Guajava ◽

Nitrogen Rate ◽

Nutritional Effects ◽

N Rates ◽

Dickson Quality Index

The increase in N concentration in the root zone of plants under saline conditions can inhibit the absorption of chloride and reduce the osmotic, toxic and nutritional effects caused by this ion. Thus, this study aimed to evaluate biomass and rootstock quality of guava. cv. Paluma irrigated with saline water under four N rates. The experiment was carried out in a greenhouse at the Center of Science and Agri-food Technology of the Federal University of Campina Grande (UFCG) at Pombal-PB, Brazil. The experimental design was randomized block with a 5 × 4 factorial arrangement. The treatments were levels of electrical conductivity of water - ECw (0.3. 1.1. 1.9. 2.7 and 3.5 dS m-1), with 70, 100, 130 and 160% of the N rate recommended for guava seedlings (541, 773, 1004.9 and 1236.8 mg N dm-3 of soil) and four replicates totaling 80 plots, each one with five plants. Salt stress caused by electrical conductivity of irrigation water of 1.4 dS m-1 onwards affected negatively the formation of phytomass of guava cv. Paluma rootstock, and this effect was mitigated on root dry matter and Dickson quality index by the increase in nitrogen rate up to 819.38 mg of N dm-3 of soil.

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EFFECT OF PHOSPHATE FERTILIZATION AND BASE SATURATION OF SUBSTRATE ON THE SEEDLINGS GROWTH AND QUALITY OF Plathymenia foliolosa Benth.

Revista Árvore ◽

10.1590/1806-90882017000100011 ◽

2017 ◽

Vol 41 (1) ◽

Cited By ~ 1

Author(s):

Eliane Cristina Sampaio de Freitas ◽

Haroldo Nogueira de Paiva ◽

Helio Garcia Leite ◽

Sílvio Nolasco de Oliveira Neto

Keyword(s):

Factorial Design ◽

Quality Index ◽

Aerial Part ◽

Dry Matter ◽

Base Saturation ◽

Phosphate Fertilization ◽

Neck Diameter ◽

Dickson Quality Index

ABSTRACT This study aimed to evaluate the growth and quality of seedlings of Plathymenia foliolosa Benth in response to base saturation of substrate and phosphate fertilization. The treatments were arranged in a factorial design of 6 P levels (0, 120, 240, 360, 480 and 600 mg dm-3) by 5 base saturation levels (3.5, 25, 40, 55, 70 %), in randomized blocks with four replications. The height of aerial part, neck diameter, shoot dry matter, root dry matter and total dry matter were determined at 118 days after the transplanting. It was still calculated the relation shoot dry matter/root dry matter and the Dickson Quality Index. There were significant effects of the phosphate fertilization for all studied variables. The base saturation had influence on all studied variables, except for the shoot dry matter/root dry matter relation. No significant effect of the interaction between base saturation of substrate and phosphate fertilization was observed on seedlings growth and quality. For the studied conditions, it is recommended 300 mg dm-3 of P for the production of quality seedlings of Plathymenia foliolosa without the necessity of liming.

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Growth and quality of mangosteen seedlings (Garcinia mangostana L.) in response to the application of humic acids

Revista Brasileira de Fruticultura ◽

10.1590/0100-29452019104 ◽

2019 ◽

Vol 41 (1) ◽

Cited By ~ 1

Author(s):

Gedeon Almeida Gomes Júnior ◽

Rafaela Alves Pereira ◽

George Andrade Sodré ◽

Eduardo Gross

Keyword(s):

Humic Acids ◽

Quality Index ◽

Dry Matter ◽

Growth Promoter ◽

Seedling Production ◽

Garcinia Mangostana ◽

Number Of Leaves ◽

The One ◽

Dickson Quality Index

Abstract The time of formation of mangosteen seedlings propagated by seeds can be considered as the biggest difficulty in the seedling production system of this species. Considering that the use of humic acids as a growth promoter has been well documented in some species, the objective of this work was to evaluate the growth of mangosteen seedlings in response to the application of humic acid (HA) doses extracted from vermicompost (0; 2; 20; 40; 200 mg C L-1). Growth rate was determined using the following variables: stem diameter, plant height, number of leaves, leaf area, stem dry matter, leaf dry matter, shoot dry matter, root dry matter, total dry matter and Dickson quality index . The dose 150 mg C L-1 was the one that approached the maximum values and therefore should be recommended for the production of seedlings. The results at 240 days after planting (DAP) showed that the HA increased the growth of mangosteen seedlings, helping to reduce the time of seedling formation under conditions for permanent planting.

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QUALITY OF CAMBUCI PEPPER SEEDLINGS IN RESPONSE TO THE APPLICATION OF NUTRIENT SOLUTIONS

JOURNAL OF NEOTROPICAL AGRICULTURE ◽

10.32404/rean.v7i4.4880 ◽

2020 ◽

Vol 7 (4) ◽

pp. 73-79

Author(s):

Nicholas Taborda Nordi ◽

Eduardo Santana Aires ◽

Thatiane Nepomuceno Alves ◽

Samara Moreira Perisato ◽

Antonio Ismael Inácio Cardoso

Keyword(s):

Quality Index ◽

Dry Matter ◽

Stem Diameter ◽

Control Treatment ◽

Final Performance ◽

Randomized Design ◽

Number Of Leaves ◽

Nutrient Solutions ◽

Dickson Quality Index

One of the main stages in the production system of a crop is the production of quality seedlings since it influences the plants' final performance in the field and their production. The study aimed to evaluate different nutrient solutions in the production of Cambuci pepper seedlings. The design used was a complete randomized design, with six treatments corresponding to the nutrient solutions proposed for the pepper crop by Castellane and Araújo, Claudio Roberto, Hoagland, and Arnon, besides the commercial products Plenan® and Biobokashi®, and a control treatment without fertilization, with six replications. The final evaluation was carried out 45 days after sowing. The following variables were analyzed: stem diameter, plant height, leaf dry matter, shoot dry matter, the number of leaves, relative chlorophyll index ("Spad"), and Dickson quality index. The seedlings subjected to the applications of Claudio Roberto and Hoagland and Arnon solutions have the highest heights and number of leaves, the largest stem diameter, shoot dry matter, leaf area, and Dickson quality index with 2.60 and 2.51 mm, 0.54 and 0.62 g, 38.64 and 41.91 cm2, and 0.107; 0.097, respectively. The Hoagland and Arnon nutrient solution provided the best characteristics to produce Cambuci pepper seedlings.

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Comparison of Methodologies to Determine the Optimum Plot Size for Okra Seedlings Evaluation

Journal of Agricultural Science ◽

10.5539/jas.v11n5p388 ◽

2019 ◽

Vol 11 (5) ◽

pp. 388

Author(s):

Karina Tiemi Hassuda dos Karina Tiemi Hassuda dos Santos ◽

Maria Luiza Pereira Barbosa Pinto ◽

Camila Pinto de Almeida ◽

Adriano Alves Fernandes ◽

Vinicius de Souza Oliveira ◽

...

Keyword(s):

Quality Index ◽

Dry Matter ◽

Optimum Size ◽

Plot Size ◽

Maximum Curvature ◽

Bootstrap Simulation ◽

Significant Difference ◽

Experimental Errors ◽

Dickson Quality Index

The production of okra using seedlings is a practice increasingly used by farmers. However, this system still lacks further research involving substrates, tray types, cell volume, pest control and disease. For this it is important to determine the optimum size of the plots, in order to reduce the experimental errors and the expenses with the experiment. The objective of this work was to determine the optimum plot size for experiments involving okra seedlings produced in Styrofoam trays of 128 cells using different methods. The methods were the maximum curvature, the maximum curvature with bootstrap simulation and the maximum curvature of the coefficient of variation. The evaluated characteristics were aerial part height, stem diameter, aerial dry matter, root dry matter, total dry matter and quality of seedlings as measured by Dickson quality index. The results showed that the optimum plot size is different between the evaluated characteristics and for characteristics there is no significant difference in the optimum plot size between the three different methods. The optimum size for evaluating okra seedlings produced in Styrofoam trays of 128 cells is 10 seedlings per plot and is indicated the use of the maximum curvature method using a bootstrap simulation.

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Assessment of ground water quality of lahar block, Bhind district in Madhya Pradesh

International Journal of Advanced Geosciences ◽

10.14419/ijag.v3i2.4949 ◽

2015 ◽

Vol 3 (2) ◽

pp. 38 ◽

Cited By ~ 1

Author(s):

Shashi Kant ◽

Y.V. Singh ◽

Lokesh Kumar Jat ◽

R. Meena ◽

S.N. Singh

Keyword(s):

Water Quality ◽

Groundwater Quality ◽

Ground Water ◽

Irrigation Water ◽

Water Quality Index ◽

Quality Index ◽

Madhya Pradesh ◽

Irrigation Water Quality ◽

Irrigation Water Quality Index

In sustainable groundwater study, it is necessary to assess the quality of groundwater in terms of irrigation purposes. The present study attempts to assess the groundwater quality through Irrigation Water Quality Index (IWQI) in hard-rock aquifer system and sustainable water use in Lahar block, Bhind of district, Madhya Pradesh, India. The quality of ground water in major part of the study area is generally good. In order to understand the shallow groundwater quality, the water samples were collected from 40 tube wells irrigation water. The primary physical and chemical parameters like potential Hydrogen (pH), Total Dissolved Solids (TDS), calcium (Ca2+), magnesium (Mg2+), sodium (Na+), potassium (K+), bicarbonate (HCO3-), carbonate (CO32-), chloride (Cl-), and nitrate (NO3-) were analyzed for (irrigation water quality index ) IWQI. The secondary parameters of irrigation groundwater quality indices such as Sodium Adsorption Ratio (SAR), Sodium Soluble Percentage (SSP), Residual Sodium Carbonate (RSC), Permeability Index (PI), and Kellies Ratio (KR) were also derived from the primary parameter for irrigation water quality index (IWQI). The IWQI was classified into excellent to unfit condition of groundwater quality based on their Water Quality Index (WQI). The IWQI (82.5%+15.0%) indicate that slightly unsustainable to good quality of ground water. Due to this quality deterioration of shallow aquifer, an immediate attestation requires for sustainable development.

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Estimates of genetic gains for growth traits in young plants of Eucalyptus urophylla S. T. Blake

CERNE ◽

10.1590/s0104-77602011000200005 ◽

2011 ◽

Vol 17 (2) ◽

pp. 189-193 ◽

Cited By ~ 2

Author(s):

Thais Galhardo Godoy ◽

Sebastião Carlos da Silva Rosado

Keyword(s):

Quality Index ◽

Dry Matter ◽

Growth Traits ◽

Block Design ◽

Genetic Gains ◽

Random Block ◽

Collar Diameter ◽

Random Block Design ◽

Root Collar ◽

Dickson Quality Index

The objective of this study was the selection of superior genotypes for growth traits, correlating them to initial height growth in the field, at age eight months. A random block design was used in the nursery, with eight clones, three replicates and four plants per plot. And a random block design was also used in the field, with eight clones, four replicate blocks and nine plants per plot. Data being analyzed in the nursery at age 120 days included: height of field seedling, at age eight months (Hc), height of nursery seedling (Hm), root collar diameter (Dc), shoot diameter (Db), shoot dry matter (PMSPA), root dry matter (PMSR), total dry matter (PMST), ratio of shoot dry matter to root dry matter (PMSPA/PMSR), Dickson quality index of root collar diameter (IQD-Dc), Dickson quality index of shoot diameter (IQD-Db). Analyses of variance showed that significant genetic differences exist among clones for all traits and, given the high heritability values found, the estimated genetic gains were generically very high. As for predicted indirect genetic gain, selection in nursery seedlings for Dc, PMSPA/PMSR, IQD-Dc provided the highest values of indirect gain in field seedling height.

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Size and vigor of Anadenanthera colubrina (Vell.) Brenan seeds harvested in Caatinga areas

Journal of Seed Science ◽

10.1590/2317-1545v39n4173727 ◽

2017 ◽

Vol 39 (4) ◽

pp. 363-373 ◽

Cited By ~ 4

Author(s):

Jaciara de Souza Bispo ◽

Danielle Carolina Campos da Costa ◽

Samara Elizabeth Vieira Gomes ◽

Gilmara Moreira de Oliveira ◽

Janete Rodrigues Matias ◽

...

Keyword(s):

Electrical Conductivity ◽

Dry Matter ◽

Folk Medicine ◽

Germination Percentage ◽

Climate Variations ◽

Randomized Design ◽

Mother Plants ◽

Physiological Quality ◽

Completely Randomized Design

Abstract: Angico is a species found in several environments in Brazil, with several applications. It is used in the timber industry and mainly in folk medicine. In order to verify a variation in the biometric characteristics and the quality of seeds from different mother-plants in different harvesting years, the following variables were studied: moisture content, diameter, density, electrical conductivity, fresh and dry matter of seedlings, germination percentage and kinetics, in a completely randomized design with a 2x3 factorial arrangement (lots x size). The obtained results showed that angico seeds from different lots showed different physiological quality, possibly due to the climate variations to which mother-plants were submitted in the different years. Seed size directly interferes with seedling growth under both controlled and greenhouse conditions, and it can be used as a vigor indicator for angico seeds.

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Increase of nutrients export and production of pitaya whit potassium fertilization

Comunicata Scientiae ◽

10.14295/cs.v11i0.3276 ◽

2020 ◽

Vol 11 ◽

pp. e3276

Author(s):

Josimara Mendes Rabelo ◽

Maria do Céu Monteiro Cruz ◽

Nubia Cassiana Santos ◽

Deilson de Almeida Alves ◽

João Esdras Lima ◽

...

Keyword(s):

Dry Matter ◽

Nutritional Requirements ◽

Nutrient Export ◽

Plant Nutrient ◽

High Productivity ◽

Potassium Fertilization ◽

Hylocereus Undatus ◽

Hylocereus Polyrhizus

Characterization works of pitayas show that the potassium (K) is the nutrient most exported, thus, influences in the productivity and quality of this fruit. However, these researches do not report the nutrients export by pitaya's associating the fertilization carried out in the orchard, information that is relevant to make the nutrients reposition adequate at the time of fertilization. The research was carried out to evaluate the supply of K2O in the export of nutrients and productivity of the Hylocereus undatus and Hylocereus polyrhizus pitaya species. The analysis was carried out in the mature fruits harvested in two harvests. Potassium fertilization was performed at doses of 0; 50; 100 and 200 g of K2O per plant. Nutrient export per ton of fruit was calculated from the determination of the nutrient levels and the dry matter of the pitaya pulp. The export of nutrients by the pitaya of the species H. undatus and H. polyrhizus occurs in the following order: K>N>P>Ca>Mg> and Mn>Fe>Cu>Zn>B. These species of pitaya have similar nutritional requirements, enabling them to be receive same fertilization management. The amount of nutrients exported was higher in plants fertilized with potassium due to the higher productivity achieved. Orchards of pitaya that reach high productivity require a greater quantity of nutrients, due to the increase export by the fruits.

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