Assessment of Physiology and Quality Performances of Cut Foliage Plant (Asparagus plumosus) under Coloured Shade Nets

The investigations were carried out during 2016–17 and 2017–18 under three different coloured shade nets (white, green and red) along with the controlled environment (open condition) at Horticultural Research Station, Mondouri, Bidhan Chandra Krishi Viswavidyalaya, West Bengal, India to study the production behavior of Asparagus plumosus, India. The experiments were arranged in Complete Randomized Design (CRD) with four replications and maintained in pots. Similar management practices were followed for all the treatments throughout the growing period. The pooled data of two years revealed that plants grown under the green shade net showed significant improvement in all the vegetative parameters i.e. plant height (109.6 cm), plant spread (70.67 cm), leaf length (33.35 cm), leaf breadth (22.00 cm) and petiole girth (0.80 cm), whereas lowest data observed in the plants maintained without any shade net. The leaf production was also better in the plants raised under green shade net than other treatments. The highest number of leaves per plant and leaf longevity was found in green shade net treatment. The leaf production interval was remarkably lowest in the plants grown under green shade net. The leaf quality was better under green shade net in terms of colour intensity, vase life and chlorophyll content. The green shade net gave overall better performance regarding both physiological and quality parameters and can be suitable for commercial cultivation.

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Varietal Performance of Anthurium (Anthurium andreanum) on Growth and Flowering in the Subtropical Zone of West Bengal

International Journal of Plant & Soil Science ◽

10.9734/ijpss/2021/v33i330419 ◽

2021 ◽

pp. 32-37

Author(s):

Tapas Kumar Chowdhuri ◽

Raghunath Sadhukhan ◽

Tushar Ghosh

Keyword(s):

West Bengal ◽

Vase Life ◽

Research Station ◽

Subtropical Zone ◽

Pooled Data ◽

Commercial Cultivation ◽

Yield And Quality ◽

Randomized Design ◽

Tropical Conditions ◽

Anthurium Andreanum

An investigation was conducted to evaluate genotypes of Anthurium by maintaining in the pot at Horticultural Research Station, Mondouri, Bidhan Chandra Krishi Viswavidyalaya, West Bengal during three consecutive years 2015-16, 2016-17 and 2017-18. The experiment was laid out in Complete Randomized Design (CRD) with fourteen anthurium cultivars and replicated thrice. Significant differences were found between all the parameters studied. From the pooled data of three years, it was observed that Tropical Red, Agnihotri and Marina recorded better suckering ability. The highest plant height was recorded in Tropical (42.4 cm) closely followed by KalingPong Pink (41.2 cm) and Nitta (39.8 cm). A maximum number of flowers plant-1 year-1 was noticed in Tropical (8.3) and lowest in Alexis (2.1). Ozaki Red recorded the largest flower (9.5 x 7.6 sq. cm), which was followed by Tropical (9.02 x 8.6 sq. cm), Tinora (8.9 x 7.3 sq. cm), and Alexis (8.9 x 8.6 sq. cm). The longest flower spike length was observed in Agnihotri (38.2 cm) followed by Tropical. Spike extended maximum vase life in Pistache (10.1 days) closely followed by Tropical (9.9 days). Overall, among the fourteen cultivars, Tropical was the best cultivar regarding both yield and quality flower production for commercial cultivation in the sub-tropical conditions of West Bengal.

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Operational Forest Stream Crossings Effects on Water Quality in the Virginia Piedmont

Southern Journal of Applied Forestry ◽

10.1093/sjaf/35.3.123 ◽

2011 ◽

Vol 35 (3) ◽

pp. 123-130 ◽

Cited By ~ 25

Author(s):

Wallace M. Aust ◽

Mathew B. Carroll ◽

M. Chad Bolding ◽

C. Andrew Dolloff

Keyword(s):

Water Quality ◽

Best Management Practices ◽

Management Practices ◽

Quality Parameters ◽

Site Factors ◽

Concentration Data ◽

Individual Site ◽

Forest Stream ◽

Randomized Design ◽

Portable Bridges

Abstract Water quality indices were examined for paired upstream and downstream samples for 23 operational stream crossings and approaches during four periods. Stream crossings were (1) portable bridges (BRIDGE), (2) culverts backfilled with poles (POLE), (3) culverts with earth backfill (CULVERT), and (4) reinforced fords (FORD). The four operational periods were (1) prior to crossing installation (INITIAL), (2) after installation (INSTALL), (3) during harvest (HARVEST), and (4) after road closure (CLOSURE). Differences (Δ) in water samples collected above and below stream crossings were analyzed for Δtotal dissolved solids (ΔTDS), ΔpH, Δconductivity, Δtemperature, and Δsediment concentration. Data were analyzed as a completely randomized design with unequal replication (four to seven replications). Significant differences were observed (α < 0.10) among crossing types for Δtemperature, ΔTDS, ΔpH, and Δconductivity. Overall, the least disruptive crossing type for water quality was BRIDGE, but road standards and approach characteristics were also important. Modeled estimates of erosion demonstrated that CULVERT approaches had higher potential erosion than other crossings. Water quality parameters were most negatively affected during INSTALL and HARVEST and were apparently improving during CLOSURE. Permanent crossings were associated with significantly greater temperatures than temporary crossings, likely because of increased width of streamside management zone removal. Water quality effects could be minimized by installing appropriate best management practices during all harvest periods rather than waiting until CLOSURE. Findings should be used cautiously because individual site factors such as climate, site, soil, and operational variability will alter effects.

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Evaluation of Different Cultivars of Tuberose (Polianthes tuberosa L.) under Humid agro Climatic conditions of Goa

Journal of Horticultural Sciences ◽

10.24154/jhs.2019.v14i02.004 ◽

2019 ◽

Vol 14 (2) ◽

pp. 109-114

Author(s):

Safeena S A ◽

Thangam M ◽

Singh N P

Keyword(s):

Performance Evaluation ◽

Plant Height ◽

Climatic Conditions ◽

Leaf Length ◽

Vase Life ◽

Fresh Weight ◽

Commercial Cultivation ◽

Flowering Behaviour ◽

Number Of Leaves ◽

Stalk Length

Tuberose (Polianthes tuberosa L.) is one of the most important tropical bulbous-ornamental cultivated for production of long-lasting flowers spikes. Adaptation and acclimatization of different cultivars under humid agro-climatic conditions of Goa are to be confirmed for their better performance. The present investigation was conducted to evaluate the performance of tuberose cultivars under agro-climatic conditions of Goa during 2014- 2017. Five single and six double cultivars of tuberose were evaluated during the study period. All the cultivars differed in their growth and flowering behaviour. Among the single cultivars, evaluated, maximum number of florets per spike (47.00) was observed in Pune local whereas spike-length (75.59 cm) was maximum in Mexican Single. Among the double cultivars, evaluated, maximum plant height (52.21 cm) and maximum number of leaves per plant (59.63) were recorded with cultivar Arka Suvasini. Leaf length was significantly higher (52.93 cm) in Pearl double whereas leaf width (2.04 cm) was maximum in Calcutta Double. Days to appearance of flower spike were earlier in Arka Suvasini. Minimum days taken for opening of basal floret (84.88 days) were recorded with cultivar Arka Suvasini. Spike girth (0.68 cm), Spike fresh-weight (69.06 cm), floret stalk-length (3.6 cm), floret diameter (5.24 cm), weight of individual floret (3.49 g) and vase life (7.93 days) was significantly maximum in Cv. Arka Suvasini followed by Pearl Double. Based on the performance evaluation cv. Mexican Single among single types and cv. Arka Suvasini and Pearl Double among double types could be recommended for commercial cultivation under agro climatic conditions of Goa.

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Salinity impacts on experimental fodder sorghum production

SAARC Journal of Agriculture ◽

10.3329/sja.v16i1.37430 ◽

2018 ◽

Vol 16 (1) ◽

pp. 145-155 ◽

Cited By ~ 1

Author(s):

JC Joardar ◽

SAA Razir ◽

M Islam ◽

MH Kobir

Keyword(s):

Plant Height ◽

Plant Biomass ◽

Saline Water ◽

Tap Water ◽

Leaf Length ◽

Research Station ◽

Salinity Treatment ◽

Growing Period ◽

Sorghum Plant ◽

Sorghum Production

Field experiment was conducted at research station of Soil, Water & Environment Discipline, Khulna University, during the dry season to see the growth performance of sorghum (Sorghum bicolor L. cv. Morokoshi) irrigating with saline water. For irrigation, river water (RW) containing EC value of 14.04 dS m-1 was collected from the Rupsha river, Khulna and mixed with tap water [TW] containing EC value of 0.78 dS m-1at three different ratios (3:1, 1:1 and 1:3 v/v). After mixing, water containing five different EC values (0.78, 4.19, 7.18, 10.79 and 14.04 dS m-1) were obtained and considered as salinity treatment. Harvesting and sampling was done 83 days after transplanting (DAT) by cutting four sorghum plants randomly selected from each plot. Different morphological parameters such as plant height, leaf number, leaf length, leaf width, stem diameter and plant biomass were measured and recorded. Soil samples were also collected from each plot. Under water salinity stress, all the agronomic attributes and plant biomass showed a decreasing tendency with increasing salt concentration in irrigation water but the growth was not harmfully affected at lower levels of salinity. Plant height and biomass was significantly decreased irrigating with water containing salinity 10.79 dS m-1.After harvest it was found that irrigation with saline water up to 10.79 dS m-1 did not show any increase of soil salinity. It was probably due to rainfall during the monsoon which was occurred at the later stage of the growing period. So, the fodder sorghum plant might be cultivated in the coastal regions of Bangladesh where fresh water irrigation is limited due to salinity problem as well as might be grown irrigating with saline water up to 10.79 dS m-1.SAARC J. Agri., 16(1): 145-155 (2018)

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EVALUATION OF DIFFERENT PRESERVATIVE SOLUTIONS AND PACKAGING MATERIAL FOR IMPROVING POST HARVEST QUALITY OF GLADIOLUS (Gladiolus grandiflorus) CUT SPIKES

World Journal of Biology and Biotechnology ◽

10.33865/wjb.003.03.0165 ◽

2018 ◽

Vol 3 (3) ◽

pp. 215

Author(s):

Ayesha Manzoor ◽

Adnan-ur- Rahman ◽

Maryam Qamar ◽

Sharmin Ashraf

Keyword(s):

Quality Parameters ◽

Packaging Material ◽

Postharvest Quality ◽

Control Treatment ◽

Vase Life ◽

Randomized Design ◽

Completely Randomized Design ◽

Solution Uptake ◽

Preservative Solutions

Gladiolus is an important cut flower in the world, and its preference in Pakistan is next to roses. But the main problem that occurs in gladiolus is that it has short vase life. The present experiment was conducted with an objective to investigate the effect of four preservative solutions [distilled water, Sucrose (3%), AgNO3 (250 ppm), AgNO3 (250 ppm) + Sucrose (3%)] and packaging material on postharvest quality of three gladiolus varieties, “Tissue, White Prosperity and Alexandra”. Packaging material consists of control treatment (without packaging), packaging of cut spikes with 100 ppm acetic acid soaked cotton and packaging of polyethylene sheet after sucrose pulsing. The experiment was arranged as two factorial laid out according to completely randomized design (CRD) having three replications. Results showed that preservative solution having combination of AgNO3 (250 ppm) + Sucrose (3%) significantly improves days to open basal floret, floret opening percentage (%), bloom spread (inch), floret length (inch), floret diameter (inch), fresh spike weight (g), dry spike weight (g), fresh weight loss (%) and vase life (days). Moreover, this treatment was also effective in reducing the wilting (%) in all gladiolus varieties. However, for solution uptake (mL/spike) and solution balance (ml/spike), AgNO3 (250 ppm)alone gives the best results. For packaging treatment, the pulsing of a cut spike with 20% sucrose followed by polyethylene sheet wrapping proves to be effective. Among the varieties, Alexandra performed better for all quality parameters in comparison to White Prosperity and Tissue

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Preservative solutions on vase life and quality of cut Polianthes tuberosa L.

Ornamental Horticulture ◽

10.1590/2447-536x.v27i3.2375 ◽

2021 ◽

Vol 27 (3) ◽

pp. 417-424

Author(s):

Debasish Paul ◽

Afifatuj Jannat ◽

Abdullah al Mahmud ◽

Mosa Jerin Akhter ◽

Shreef Mahmood

Keyword(s):

Citric Acid ◽

Quality Parameters ◽

Postharvest Quality ◽

Vase Life ◽

Randomized Design ◽

Completely Randomized Design ◽

Solution Uptake ◽

Single Factor Experiment ◽

Preservative Solutions

ABSTRACT This experiment was conducted to study the effectiveness of different preservative solutions on vase life and quality of angelica cut inflorescences cv. Single. The concentrations of citric acid at 100, 200 and 300 mg L-1, sucrose at 3% and 4% and H2O2 at 0.1%, 0.2% and 0.3% were used as preservatives, while distilled water was used as control. The single factor experiment was laid out in a completely randomized design (CRD) with three replications. Citric acid and H2O2 solutions effectively inhibited bacterial growth-related blockage in the vascular tissues, but had adverse effects on the vase life. The inflorescences stored in sucrose (3% and 4%) solutions remained fresh up to 10 days after preservation (DAP), maintaining good solution uptake, controlling transpiration loss and gaining higher relative fresh weight. Different quality parameters like floret diameter and number of opened florets were also significantly higher in inflorescences preserved in sucrose (3% and 4%) solution, followed by control, citric acid and H2O2, respectively, in different DAP. Overall, the inflorescence of cut tuberose preserved in sucrose, particularly at 4% solutions, showed better postharvest quality than other preservatives and maximum vase life.

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Growth Response of Gmelina arborea (ROB) Seedlings to Cassava Peels as Organic Fertilizer

Asian Journal of Research in Agriculture and Forestry ◽

10.9734/ajraf/2019/v4i330064 ◽

2019 ◽

pp. 1-7

Author(s):

A. B. Alarape ◽

S. A. Adedokun ◽

O. N. Sulaiman ◽

A. A. Olunloyo ◽

M. O. Odewale

Keyword(s):

Plant Height ◽

Organic Fertilizer ◽

Leaf Length ◽

Stem Diameter ◽

Gmelina Arborea ◽

Leaf Production ◽

Best Response ◽

Randomized Design ◽

Significant Difference ◽

Cassava Peel

The study investigated the effect of cassava peel on the growth and development of Gmelina arborea seedlings. The treatment was made up of cassava peel applied to top soil at 1 g, 2 g, 3 g, 4 g, 5 g, 6 g, 7 g, 8 g, 9 g, 10 g. The treatments were replicated three times. The treatments were mixed with 20 kg of soil thereby making a total of thirty three (33). The experiment, which lasted eight weeks, was laid out in Complete Randomized Design (CRD) and the following variables were assessed; stem height, stem diameter, leaf length and leaf production. The data collected were subjected to analysis of variance (ANOVA) and mean separation was carried out using Least Significant Difference (LSD). The result obtained showed that treatment 6 g gave the best response in term of number of leaves with mean 16.35 while treatment 2 g had the least performance with mean 6.67. The treatment 3 g of cassava peel performed best in terms of leaf length with mean 18.00 while 10 g and 8 g treatments had the lowest stem diameter of 29 cm. With respect to plant height, the treatment of 6 g of cassava peel application had the best response with plant height of 46.67 cm, while the least value of 20.67 cm was recorded in treatment 8 g. Hence, the control (0 g) has significant difference from treatment 8 g. In all the variables assessed, the control showed close values with treatment 8 g, 9 g and 10 g. The result shows a higher level of significant difference to the control at p < 0.05. However, it is recommended that when raising Gmelina arborea where the traits, plant height and leaves are of importance, 6 g of cassava peel is better adapted. Hence, the plant could be raised in the absence of any treatment where appropriate soil is used.

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Pertumbuhan Cladocera jenis Chydoridae pada media kultur yang berbeda

e-Journal BUDIDAYA PERAIRAN ◽

10.35800/bdp.1.2.2013.1910 ◽

2013 ◽

Vol 1 (2) ◽

Author(s):

Denovis Sambode ◽

Henneke Pangkey ◽

Sartje Lantu

Keyword(s):

Population Growth ◽

Culture Medium ◽

Quality Parameters ◽

Organic Fertilizers ◽

Cow Dung ◽

Randomized Design ◽

Period Data ◽

Growth Development ◽

Completely Randomized Design ◽

Medium Culture

The aim of this study was to find out the effect of different organic fertilizers on the population growth of Chydorus sp. This research was conducted at Laboratorium of Nutrition and Food Technology, Faculty of Fishery and Marine Sciences, Sam Ratulangi University, from December, 2012 to January, 2013. The experiment was run in the Completely Randomized Design with 3 treatments and 3 replication. Chydorus sp. was cultured in 9 glass jars with a volume of 1 L each. Three treatments applied in this research included A: medium culture composed of 500ml of water and 50 grams of soil; B: medium culture composed of 500ml of water, 50 grams of soil and 10g of cow dung; C: medium culture composed of 500ml of water, 50 grams of soil and 10g of horse dung. The density of Cydorus sp. in each media was 10 individuals /500 ml water. Observation on the population growth, development of live preys, and water quality parameters was conducted for 20 days period. Data were statistically analized with Analysis of variance. The results showed the highest density of Chydorus sp. was reached by Chydorus cultured in medium with horse manure (2169 individual/500 ml), followed by medium culture with cow manure (1715 individual/500 ml), and the lowest in medium culture with soil which was 1065,33 individual/500 ml. However, Analysis of variances showed that Chydorus population growth were not significantly affected by different culture medium. Keywords: manure, liquid fertilizer, growth, Chydorus sp.

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Comparison of Forecasting Models for Real-Time Monitoring of Water Quality Parameters Based on Hybrid Deep Learning Neural Networks

Water ◽

10.3390/w13111547 ◽

2021 ◽

Vol 13 (11) ◽

pp. 1547

Author(s):

Jian Sha ◽

Xue Li ◽

Man Zhang ◽

Zhong-Liang Wang

Keyword(s):

Neural Network ◽

Water Quality ◽

Deep Learning ◽

Real Time ◽

Best Management Practices ◽

Input Data ◽

Management Practices ◽

Quality Parameters ◽

Water Quality Parameters ◽

Real Time Monitoring

Accurate real-time water quality prediction is of great significance for local environmental managers to deal with upcoming events and emergencies to develop best management practices. In this study, the performances in real-time water quality forecasting based on different deep learning (DL) models with different input data pre-processing methods were compared. There were three popular DL models concerned, including the convolutional neural network (CNN), long short-term memory neural network (LSTM), and hybrid CNN–LSTM. Two types of input data were applied, including the original one-dimensional time series and the two-dimensional grey image based on the complete ensemble empirical mode decomposition algorithm with adaptive noise (CEEMDAN) decomposition. Each type of input data was used in each DL model to forecast the real-time monitoring water quality parameters of dissolved oxygen (DO) and total nitrogen (TN). The results showed that (1) the performances of CNN–LSTM were superior to the standalone model CNN and LSTM; (2) the models used CEEMDAN-based input data performed much better than the models used the original input data, while the improvements for non-periodic parameter TN were much greater than that for periodic parameter DO; and (3) the model accuracies gradually decreased with the increase of prediction steps, while the original input data decayed faster than the CEEMDAN-based input data and the non-periodic parameter TN decayed faster than the periodic parameter DO. Overall, the input data preprocessed by the CEEMDAN method could effectively improve the forecasting performances of deep learning models, and this improvement was especially significant for non-periodic parameters of TN.

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The effect of ozone on cottonwood – leaf rust interactions: independence of abiotic stress, genotype, and leaf ontogeny

Canadian Journal of Botany ◽

10.1139/b87-131 ◽

1987 ◽

Vol 65 (5) ◽

pp. 949-953 ◽

Cited By ~ 17

Author(s):

James S. Coleman ◽

Clive G. Jones ◽

William H. Smith

Keyword(s):

Leaf Rust ◽

Populus Deltoides ◽

Leaf Age ◽

Leaf Length ◽

Ozone Treatment ◽

Shoot Biomass ◽

Leaf Ontogeny ◽

Leaf Production ◽

Leaf Injury ◽

Eastern Cottonwood

The interaction of an acute ozone dose, plant genotype, and leaf ontogeny on the development of cottonwood leaf rust on eastern cottonwood (Populus deltoides Bartr.) was investigated. A rust-resistant (ST 66) and a rust-susceptible (ST 109) clone were exposed to charcoal-filtered air or were fumigated with 393 μg m−3 (0.20 ppm) ozone for 5 h. Forty hours after fumigation, leaf material of different developmental ages was inoculated with urediospores of Melampsora medusae Thum., and uredia production was measured after 10 days. Ozone fumigation of cottonwoods significantly reduced uredia production by M. medusae on both clones and all leaf ages without causing visible leaf injury or measurable changes in cottonwood height growth, leaf production, leaf length, or root/shoot biomass. Uredia production was strongly affected by ozone treatment, cottonwood genotype, and leaf age, but interactions among these three factors did not occur.

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