Enhanced Growth of Amaryllis (Hippeastrum hybridum) Seedlings in Horse Manure Medium

HortScience ◽  
1998 ◽  
Vol 33 (3) ◽  
pp. 466b-466
Author(s):  
Norma R. Palispis
Keyword(s):  
Growth Rate ◽  
Leaf Area ◽  
Dry Weight ◽  
Leaf Length ◽  
Garden Soil ◽  
Area Index ◽  
Wood Shavings ◽  
Horse Manure ◽  
Length Increment ◽  
Net Assimilation

An experiment was conducted to compare the growth of amaryllis seedlings in the following media: pure horse manure, 1:1 garden soil–horse manure (v/v), and 1:1 garden soil–wood shavings (v/v). Final values for fresh weight increment, dry weight, leaf area, leaf area index, leaf length increment, bulb width increment, leaf area ratio, and crop growth rate were significantly highest and lowest in horse manure and 1:1 garden soil–wood shavings, respectively. Net assimilation rate, relative growth rate, and moisture content were similar for all treatments.

scholarly journals Coffee (Coffea arabica L,var. Castillo) seedling growth in Nariño, Colombia

2021 ◽  
Vol 38 (1) ◽  
pp. 62-74
Author(s):  
José Álvaro Castillo ◽  
Danita Andrade
Keyword(s):  
Growth Rate ◽  
Leaf Area ◽  
Seedling Growth ◽  
Block Design ◽  
Dry Weight ◽  
Climatic Conditions ◽  
Area Index ◽  
Environmental Variations ◽  
La Florida ◽  
Net Assimilation

Coffee is one of the most socioeconomically important crops worldwide. Currently, environmental variations due to climate change are affecting coffee development and growth. Therefore, it is important to evaluate areas that offer a different environment during seedling stage since it is fundamental for successful cultivation. Four municipalities located at different altitudes in the Department of Nariño were selected: La Florida (1879 m a.s.l.), Sandoná (1924 m a.s.l.), Consacá (2001 m a.s.l.), and La Unión (1417 m a.s.l.). The experiment was conducted as a randomized complete block design. Growth variables were measured for five months, including total height-TH, number of leaves-NL, total leaf area-LA, fresh weight-FW, and dry weight-W. The following indices were calculated from the variables recorded: relative growth rate-RGR, leaf area index-LAI, net assimilation rate-NAR, crop growth rate-CGR, leaf area duration-LAD, and leaf area ratio-LAR. The data related to TH, NL, W, and LA recorded during the last evaluation (120 days after being transplanted) showed differences between locations; the maximum values in TH, W and LA were recorded in La Union, while higher averages in NL were obtained in Sandoná. The index values for CGR, LAI, LAR, RGR, and LAD were higher in La Unión, while NAR was higher in La Florida. The results lead to conclude that there are differences in coffee seedling growth depending on the climatic conditions. Accordingly, the highest growth was observed in areas at lower altitudes; therefore, these are recommended for seedling establishment given the higher growth rate, especially that of leaves.

EFFECT OF SOLID AND LIQUID ORGANIC FERTILIZER ON GROWTH, YIELD AND YIELD COMPONENTS OF ROSSELLE (Hibiscus sabdariffa L.) IN THE NIGERIAN SAVANNAH

2021 ◽  
Vol 5 (2) ◽  
pp. 428-439
Author(s):  
K. M. Ladan ◽  
M. G. Abubakar ◽  
J. Suleiman
Keyword(s):  
Growth Rate ◽  
Plant Height ◽  
Seed Weight ◽  
Organic Fertilizer ◽  
Poultry Manure ◽  
Dry Weight ◽  
Assimilation Rate ◽  
Area Index ◽  
Net Assimilation ◽  
100 Seed Weight

The Study was conducted to evaluate the effect of solid and liquid organic fertilizer on growth and yield of rosselle in 2016 cropping season at Institute of Agricultural Reserve Zaria, Samaru (11011’N 07038E and 686m) and Institute of Horticultural Research Farm Bagauda (12000’N 8031”Em 488m) in Northern Guinea Savannah and Sudan Savannah Ecological Zones of above sea level Nigeria. Treatments consisted of four levels of solid poultry manure (0.0, 1.0, 2.0 and 3.0) tons/ha and five levels of liquid organic manure from Grand Total Organic Fertilizer Limited (0.0, 0.5, 1.0, 1.5 and 2.9) litres/ha, which were factorially combined in a randomized complete block design (RCBD) and replicated three times. Data on growth parameter were collected on plant height (cm), plant dry weight (g), leaf Area index crop growth rate (CGR) Relative Growth Rate (RGR) and Net assimilation rate (NAR) while data on yield parameters like number of calyx per pant, 100 seed weight (g) and  calyx yield per hectare kg/ha were collected. Results showed that plant height, plant dry weight(g), 100 seed weight(g) and calyx dry yield kg/ha had a significant increase with application of 2.0 litres/ha of liquid fertilizer than other rates. While application of solid poultry manure at 3.0ton/ha significantly increases plant height, net assimilation rate, leaf area index and calyx dry weight when compared with other rates. From the results obtained, the combination of 2.0 litres/ha liquid organic fertilizer and 3.0 ton/ha solid poultry manure produce the highest calyx yield at both location.

scholarly journals Fitness Cost of Imazamox Resistance in Wild Poinsettia (Euphorbia heterophylla L.)

Agronomy ◽  
2020 ◽  
Vol 10 (12) ◽  
pp. 1859
Author(s):  
Saeid Hassanpour-bourkheili ◽  
Mahtab Heravi ◽  
Javid Gherekhloo ◽  
Ricardo Alcántara-de la Cruz ◽  
Rafael De Prado
Keyword(s):  
Growth Rate ◽  
Leaf Area ◽  
Specific Leaf Area ◽  
Dry Weight ◽  
Area Ratio ◽  
Fitness Cost ◽  
Seed Plant ◽  
Growth Indices ◽  
Relative Growth ◽  
Net Assimilation

Wild poinsettia (Euphorbia heterophylla L.) is a difficult-to-control weed in soybean production in Brazil that has developed resistance to herbicides, including acetolactate synthase inhibitors. We investigated the potential fitness cost associated to the Ser-653-Asn mutation that confers imazamox resistance in this weed. Plant height, leaf and stem dry weight, leaf area and seed production per plant as well as the growth indices of specific leaf area, leaf area ratio, relative growth rate and net assimilation in F2 homozygous resistant (R) and susceptible (S) wild poinsettia progenies were pairwise compared. S plants were superior in most of the traits studied. Plant heights for S and R biotypes, recorded at 95 days after planting (DAP), were 137 and 120 cm, respectively. Leaf areas were 742 and 1048 cm2 in the R and S biotypes, respectively. The dry weights of leaves and stems in the S plants were 30 and 35%, respectively, higher than in the R plants. In both biotypes, the leaves had a greater share in dry weight at early development stages, but from 50 DAP, the stem became the main contributor to the dry weight of the shoots. The R biotype produced 110 ± 4 seed plant−1, i.e., 12 ± 3% less seeds per plant than that of the S one (125 ± 7 seed plant−1). The growth indices leaf area ratio and specific leaf area were generally higher in the S biotype or similar between both biotypes; while the relative growth rate and net assimilation rate were punctually superior in the R biotype. These results demonstrate that the Ser-653-Asn mutation imposed a fitness cost in imazamox R wild poinsettia.

scholarly journals Effects of Gibberellic Acid (Ga3) on Growth and Yield Parameters of French Bean (Phaseolus Vulgaris L.)

2017 ◽  
Vol 43 (1) ◽  
pp. 49-60
Author(s):  
Ferdowsi Noor ◽  
Feroza Hossain ◽  
Umme Ara
Keyword(s):  
Growth Rate ◽  
Leaf Area ◽  
Dry Matter ◽  
Growth Parameters ◽  
French Bean ◽  
Research Field ◽  
Growth And Yield ◽  
Growth Stages ◽  
Area Index ◽  
Net Assimilation

A field study was conducted during the Rabi season of 2009-2010 in the research field of Bangladesh Council of Scientific and Industrial Research (BCSIR), Dhaka. Six levels of GA3, viz. 0, 30, 50, 70, 90 and 110 ppm were sprayed at 18 days after sowing (DAS). GA3 treatments significantly increased plant height than the control plants. GA3 with 30 to 90 ppm significantly increased number of branches and leaves, leaf area, leaf area index (LAI), leaf dry matter and total dry matter at different growth stages. GA3 at 30 to 70 ppm gradually increased crop growth rate (CGR), net assimilation rate (NAR) and relative growth rate (RGR) and declined advanced growth stages. Number of dry pods /plant, number of seeds /pod, 1000 seed weight, fresh fodder, fresh pod, dry seed yield and harvest index also significantly increased. Positive significant correlations were found among growth parameters and as well as yield contributing characters. Asiat. Soc. Bangladesh, Sci. 43(1): 49-60, June 2017

scholarly journals Shading, Growth, and Dry-matter Partitioning of Cocoyam [Xanthosoma sagittifolium (L.) Schott]

1991 ◽  
Vol 116 (6) ◽  
pp. 1117-1121 ◽  
Author(s):  
Hector R. Valenzuela ◽  
Stephen K. O'Hair ◽  
Bruce Schaffer
Keyword(s):  
Leaf Area ◽  
Linear Equations ◽  
Dry Weight ◽  
Leaf Lamina ◽  
Dry Matter Partitioning ◽  
Area Index ◽  
Xanthosoma Sagittifolium ◽  
Leaf Density ◽  
Net Assimilation ◽  
Effect Of Light

Cocoyam was grown in 100%, 50%, or 30% daylight to determine the effect of light intensity on growth characteristics at various stages of plant development. Beginning ≈ 2 months after planting, growth was monitored at three or four monthly intervals. Plants grown in shade had more petiole and leaf lamina growth and extension, as well as increased top: corm plus cormel ratio (dry-weight basis), than plants grown in 100% daylight. Shade-grown plants had a higher leaf area index and specific leaf area than sun-grown plants. Sun-grown plants had a higher net assimilation rate and specific leaf density than shade-grown plants. Linear equations were developed to predict lamina area through measurements of leaf lamina width and length, petiole length, and lamina dry weight.

scholarly journals Growth of Jatropha curcas L. fertilized with nitrogen and potassium under conditions of dry tropical forest of Colombia

2017 ◽  
Vol 35 (2) ◽  
pp. 223-231
Author(s):  
Omar Montenegro R. ◽  
Stanislav Magnitskiy ◽  
Liz Patricia Moreno ◽  
Aquiles Enrique Darghan
Keyword(s):  
Growth Rate ◽  
Tropical Forest ◽  
Leaf Area ◽  
Jatropha Curcas ◽  
Fertilizer Application ◽  
Area Index ◽  
Dry Tropical Forest ◽  
Jatropha Curcas L ◽  
Reproductive Phase ◽  
Net Assimilation

Due to the demand in biofuel, the plant species that are not eatable and do not compete with traditional crops in Colombia, such as Jatropha curcas L., have become an important option. To produce more knowledge on the growth of this species, the research was carried out with different amounts of N and K fertilizers applied during the first 435 days after sowing (das) under dry tropical forest conditions. With the highest N dose (150 kg ha-1), the largest leaf area index was obtained in all evaluation period. The highest net assimilation rate (NAR) values were seen in the treatment with 150 kg ha-1 of N at 75 das, 1.852 g m-2 d-1, with no differences presented among the treatments with fertilizer application. The highest absolute growth rate (AGR) was observed when 150 kg ha-1 of N+180 kg ha-1of K2O were applied at the start of the reproductive phase (345 das), 24.5 g d-1. The specific leaf area (SLA) did not present a response to the treatments. The relative growth rate (RGR) reached zero value at 402 das for the plants without fertilizers. The accumulation of biomass in J. curcas was influenced by the fertilizers with N and K, presenting rapid initial vegetative growth (first 165 das) which decreased with the starting of the reproductive phase.

scholarly journals Plant Growth Analysis of Jack Been (Canavalia ensiformis L.) at Different Spacing to Determine the Application Time of Cutback Technology

2019 ◽  
Vol 4 (1) ◽  
pp. 1-7
Author(s):  
N. Nurmuliana ◽  
Muh. Akhsan Akib
Keyword(s):  
Growth Rate ◽  
Leaf Area ◽  
Growth Analysis ◽  
Assimilation Rate ◽  
Area Index ◽  
Relative Growth ◽  
Jack Bean ◽  
Canavalia Ensiformis ◽  
Bean Plants ◽  
Net Assimilation

AbstractThe growth of jack bean (Canavalia ensiformis L) is affected by genetic and environmental factors.  One of the environmental factors involved is growing space. Growing space related to each plant of areas occupied is stated by the distance between plants. A Research has been conducted as long three months in dry season with average daily temperature of 25 to 31OC on altitude of 25 to 500 meter, to determine the timing of the application of cutback technology based on an analysis of growth of jack bean plants (Canavalia ensiformis L) in different growth spaces.  The research was conducted in the trial form using a randomized block design. Variables of plants growth analysis observed is leaf area index (LAI), leaf area is computed by gravimetric method; net assimilation rate (NAR), and relative growth rate (RGR) is determined based on the dry weight of plants; in all three rooms grew, namely 75 cm x 100 cm (control), 75 cm × 75 cm and 75 cm × 50 cm, each repeated three times. The result shows that the trend of leaf area index increased at net assimilation rate (g-1.cm-2.week-1) and relative growth rate (g-1.g-1.minggu-1) decreasing at the time the plant to the age 8 weeks after planting.  The best time for the application of reduction technology to jack bean plants (Canavalia ensiformis L) in all tested growing spaces, is recommended when plants are between 7 and 8 weeks after planting

The growth and performance of rain-grown cotton in a tropical upland environment: I. Yields, water relations and crop growth

1972 ◽  
Vol 79 (1) ◽  
pp. 121-135 ◽  
Author(s):  
A. B. Hearn
Keyword(s):  
Leaf Area ◽  
Meteorological Data ◽  
Dry Weight ◽  
Sowing Date ◽  
Crop Growth ◽  
Growth And Yield ◽  
Area Index ◽  
Net Assimilation ◽  
And Performance ◽  
Independent Effects

SUMMARYThe effects of environment and genotype on growth and yield of cotton were studied in three experiments done at Namulonge, Uganda, from 1966 to 1969. Treatments were date of sowing, variety, fertilizer, plant population and water. Variety BPA66 sown in June at 4–10 plants m-2 outyielded other varieties, sowing dates and population densities. Compound fertilizer at l.25 t ha-1 increased yield by 15% and irrigation increased yield by 38%. The soil water deficit (CSWD) was calculated from meteorological data, and the relative water content (RWC) of the plants was measured. CSWD did not affect growth until a critical value (CD) was reached, which increased from 20 to 50 mm as the crop aged. When CD was reached RWC was s0·094 at dawn and 0·83 at 1400 h. Growth stopped when CSWD > CD, except while any rain, insufficient to make CSWD < CD, was being consumed. Days while such rain was being consumed and days when CSWD < CD were added to give the effective numbers of growing days which accounted for differences in numbers of mainstem nodes caused by sowing date and spacing, and for differences in plant dry weight and leaf area caused by sowing date. Variation in light transmitted by the crop canopy depended on leaf area index (L) alone; spacing, fertilizer and CSWD had no independent effects. The measured extinction coefficient was 1.1 compared with 0·9 predicted by de Wit's (1965) model. Measured value of crop growth rate (C) agreed with values predicted by the de Wit model for the vegetative phase. Spacing and fertilizer only affected C through L. During the reproductive phase C became much less dependent on L, and the form of the relationship changed. Some varieties including BPA66 had a greater net assimilation rate. Maximum C was expected when L ~ 3, but L was seldom > 2. Crops sown at current and previously recommended spacings had sparse canopies and did not fully use light available for dry matter production.

scholarly journals Growth analysis in chard plants (Beta vulgaris L. Cicla, cv. 'Pencas Blancas') exposed to different light quality

2014 ◽  
Vol 32 (2) ◽  
pp. 205-212 ◽  
Author(s):  
Fánor Casierra-Posada ◽  
Esteban Zapata-Casierra ◽  
Daniel A. Chaparro-Chaparro
Keyword(s):  
Growth Rate ◽  
Leaf Area ◽  
Dry Matter ◽  
Light Quality ◽  
Dry Weight ◽  
Dry Mass ◽  
Dry Matter Partitioning ◽  
Absolute Growth ◽  
Net Assimilation ◽  
Total Dry Weight

To determine the effects of light quality on the growth indices of plants, Pencas Blancas cultivar chard plantlets were grown for 2 months under five different light treatments, obtained by filtering sunlight through colored polyethylene films. The treatments included: red, blue, green, yellow and transparent cover colors. A transparent cover (white light) was used as the control. The colored covers affected the plant growth. The plants grown under the yellow cover presented a better behavior with regards to growth, taken as: total dry weight per plant, leaf area, specific leaf area, absolute growth rate, relative growth rate, harvestable dry matter and root to shoot ratio. The dry matter partitioning in the leaves and roots was affected by the light quality, but not in the petioles, with a higher accumulation of dry mass in the leaves of plants grown under the yellow cover. As a consequence of the enhanced leaf area in the plants under the yellow cover, they also had the highest water uptake. On the other hand, the highest net assimilation rate value was found in plants grown under the transparent cover. These results open up the possibility of using yellow colored cover in leafy green vegetables, especially in chard plants grown under controlled conditions.

Sign in / Sign up

Export Citation Format

Share Document