scholarly journals Comparative Growth Analysis of two Varieties of Rice Following Naphthalene Acetic Acid Application

2011 ◽  
Vol 35 (1) ◽  
pp. 113-120 ◽  
Author(s):  
Nargis Jahan ◽  
AMM Golam Adam
Keyword(s):  
Acetic Acid ◽  
Dry Matter ◽  
Growth Analysis ◽  
Early Stage ◽  
Naphthalene Acetic Acid ◽  
Assimilation Rate ◽  
Relative Growth ◽  
Number Of Leaves ◽  
Net Assimilation ◽  
Academy Of Sciences

A pot experiment showed that 100 and 200 ppm naphthalene acetic acid (NAA) plant height, number of leaves per plant and number of tillers per plant were found to increase due to 100 ppm NAA only in BRRI dhan-29 (V1) and varied significantly at 60 DAS. Total dry matter (TDM) was found to increase up to harvest due to both the treatments in V1, whereas, in BRRI dhan-50 (V2) also increased at 15 and 30 DAS and the variation was non-significant. There was an increasing tendency in leaf area per plant due to T1 treatment in both the varieties except at 45 DAS in V2. Significant variations were observed at 15 and 30 DAS only in V1. Relative growth rate (RGR) was maximum at early stage of growth and then declined in both the varieties. RGR was significant during 0 to15 and 45 to 60 DAS in case of V1. Net assimilation rate (NAR) was non-significantly affected and found to increase during 15 to 30 DAS following both the treatments in V1, but in V2 due to T2 treatment only. Out of the two concentrations 100 ppm NAA produced better stimulation.DOI: http://dx.doi.org/10.3329/jbas.v35i1.7976Journal of Bangladesh Academy of Sciences, Vol.35, No.1, 113-120, 2011

scholarly journals APLIKASI KOMPOS TANDAN KOSONG KELAPA SAWIT DAN HORMON TANAMAN UNGGUL TERHADAP PERTUMBUHAN TANAMAN ANTHURIUM (Anthurium sp)

2019 ◽  
Vol 33 (2) ◽  
pp. 169-178
Author(s):  
T. Rosmawaty ◽  
Samsul Kurniawan
Keyword(s):  
Oil Palm ◽  
Plant Hormone ◽  
Assimilation Rate ◽  
Total Leaf Area ◽  
Root Volume ◽  
Relative Growth ◽  
Randomized Design ◽  
Number Of Leaves ◽  
Completely Randomized Design ◽  
Net Assimilation

This research aims to examine the effect of compost bunches of oil palm and plant hormone superior on growt of anthurium plant. The research was conducted at the experiment farm of faculty of agriculture Riau Islamic university during 4 months, starting from April to July 2015. The completely randomized design was used by using 2 factors, the first factor was compost bunches of oil palm, consisting of 0, 15, 30, 45 g/polybag, the second factor was plant hormone superior consisting of 0, 2, 4, 6 milli/liter. The parameters observed the number of leaves per plant, total leaf area, relative growth rate, net assimilation rate, root volume. The results showed that interactinally has effect on number of leaves per plant and root volume the best treatment of compost bunches of oil palm 30 g/ploybag and plant hormone superior 4 milli/liter. Application of compost bunches of oil palm affects all observation parameter, the best treatment 30 g/polybag. Application of plant hormone superior affects all observation parameter, the best treatment 4 mili/liter.

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

INFLUENCE OF AIR TEMPERATURE, LIGHT INTENSITY AND SOIL MOISTURE ON THE GROWTH, YIELD AND SOME GROWTH ANALYSIS CHARACTERISTICS OF CHINOOK WHEAT GROWN IN THE GROWTH CHAMBER

1968 ◽  
Vol 48 (3) ◽  
pp. 299-311 ◽  
Author(s):  
C. A. Campbell ◽  
D. W. L. Read
Keyword(s):  
Growth Rate ◽  
Soil Moisture ◽  
Light Intensity ◽  
Leaf Area ◽  
Dry Matter ◽  
Moisture Stress ◽  
Assimilation Rate ◽  
Total Leaf Area ◽  
Relative Growth ◽  
Net Assimilation

The response of Chinook wheat to light intensity, air temperature and soil moisture stress was studied under controlled environmental conditions in a 3 × 3 × 2 factorial experiment.Increasing day temperature from 21 to 27 °C or night temperature from 13 to 21 °C did not affect tillering, but the plants had shorter, slimmer culms with smaller individual leaves, less total leaf area, and less vegetative and grain dry matter. Temperature changes had little effect on leaf area ratios and their influence on net assimilation rate and relative growth rate was inconsistent. Percent grain protein was increased by temperature.A reduction of light intensity from 17 to 6 cals cm−2hr−1 did not change individual leaf size, but did produce shorter plants with fewer tillers and weak culms. Vegetative, root and grain dry matter were reduced. Shading reduced the translocation of leaf assimilates and lowered the cellulose content of the straw, but increased percent grain protein.Plants developed more tillers at the lower moisture stress, but this difference disappeared by heading time. The lower stress resulted in taller, thicker-stemmed culms with a greater total leaf area, and greater yields of straw and root. The effect of moisture on leaf area ratio was small and its influence on net assimilation rate and relative growth rate was small and inconsistent. Its influence on grain yield varied with temperature; the latter interaction was traced specifically to the influence of moisture stress on seed set. The effect of moisture on percent protein and carbohydrates in grain and on percent cellulose in the straw was inconsistent.

SEEDLING GROWTH OF CRESTED WHEATGRASS AND RUSSIAN WILD RYEGRASS

1970 ◽  
Vol 50 (5) ◽  
pp. 559-563
Author(s):  
S. SMOLIAK ◽  
A. JOHNSTON ◽  
D. B. WILSON
Keyword(s):  
Seedling Growth ◽  
Dry Matter ◽  
Photosynthetic Efficiency ◽  
Growth Analysis ◽  
Net Assimilation Rate ◽  
Assimilation Rate ◽  
Crested Wheatgrass ◽  
Agropyron Desertorum ◽  
Net Assimilation

Seedlings of crested wheatgrass, Agropyron desertorum (Fisch.) Schult., cultivar Summit, and Russian wild ryegrass, Elymus junceus Fisch., cultivar Sawki, were grown in the greenhouse for 7 weeks. Each week 20 plants were destructively harvested for growth analysis. Leaf and tiller numbers and leaf lengths were recorded for an additional 10 plants of each species. Mean net assimilation rate of crested wheatgrass was significantly higher (P < 0.01) than that of Russian wild ryegrass, apparently indicating greater photosynthetic efficiency in the former. In 7 weeks, crested wheatgrass seedlings produced nearly twice as much total dry matter as Russian wild ryegrass seedlings.

A growth analysis of waterlogging damage in mung bean (Phaseolus aureus)

1989 ◽  
Vol 67 (8) ◽  
pp. 2391-2395 ◽  
Author(s):  
Mary E. Musgrave ◽  
Mary Alice Vanhoy
Keyword(s):  
Leaf Area ◽  
Mung Bean ◽  
Dry Matter ◽  
Growth Analysis ◽  
Recovery Period ◽  
Assimilation Rate ◽  
Phaseolus Aureus ◽  
Specific Leaf Weight ◽  
Leaf Weight ◽  
Net Assimilation

Mung beans (Phaseolus aureus Roxb.) were grown for 2 weeks in gravel–vermiculite soilless mix in a growth chamber and subjected to a 1-week waterlogging period followed by a 1-week recovery period. Sequential harvests were made to determine the time course of effects of waterlogging and subsequent recovery on growth parameters by techniques of growth analysis. Root dry matter was the first to be affected, along with an increase in leaf dry matter and specific leaf weight. After a 1-week waterlogging period, specific leaf weight had more than doubled in the stressed plants. Leaf area declined in relation to the control plants as did the ratio of root dry matter to shoot dry matter. During the recovery period there was an increase in the dry matter allocation to the roots relative to the shoot. Specific leaf weight fell to control levels although the rate of leaf area elaboration did not increase during this time, suggesting a redistribution of stored assimilates from the leaves. Net assimilation rate increased during the waterlogging period, probably due to a restriction in root metabolism and reduced translocation out of the leaf rather than to an increase in photosynthesis. Net assimilation rate of waterlogged plants was severely reduced compared with control plants during the recovery period. Both relative growth rate and leaf area duration declined during the waterlogging period and declined further subsequent to the waterlogging treatment. The results illustrate the interrelationships between root and shoot carbon budgets in mung bean during response to the stress of waterlogging.

scholarly journals Gas exchange, phisiological indexes and ionic accumulation in Annona emarginata (Schltdl.) H. Rainer seedlings in nutrients solution

2013 ◽  
Vol 35 (2) ◽  
pp. 361-376 ◽  
Author(s):  
Daniel Baron ◽  
Gisela Ferreira ◽  
João Domingos Rodrigues ◽  
Carmen Sílvia Fernandes Boaro ◽  
Ana Cláudia Macedo
Keyword(s):  
Growth Rate ◽  
Gas Exchange ◽  
Water Use ◽  
Dry Matter ◽  
Co2 Assimilation ◽  
Assimilation Rate ◽  
Relative Growth ◽  
Use Efficiency ◽  
Net Assimilation ◽  
Complete Nutrient Solution

"Araticum-de-terra-fria" (Annona emarginata (Schltdl.) H. Rainer) has been consider a good alternative in rootstock production for the main commercial Annonaceae species. Although this species develops in different soil and climate conditions, there is no understanding by the physiological responses of this species at different nutritional levels. Thus, the objective of this study was to evaluate the influence of different ionic strengths on development of vegetative species known as "Araticum-de-terra-fria". It was evaluated in seedlings grown in different ionic strengths (25% I, 50% I, 75% I and 100% I) of the complete nutrient solution Hoagland and Arnon (1950) nº 2, for 140 days, the following characteristics: Gas Exchange (CO2 assimilation rate, stomatal conductance, internal CO2 concentration, transpiration rate, water use efficiency, Rubisco carboxylation efficiency); Vegetative growth characteristics (diameter, leaf number, dry matter); Physiological Indexes (leaf area ratio, specific leaf area, relative growth rate, net assimilation rate, leaf weight ratio) and Ionic Accumulation (nutrients leaf analysis). Seedlings grown under 50% I showed the highest values of Leaf CO2 assimilation rate, water use efficiency, carboxylation efficiency, growth, relative growth rate, net assimilation rate and ionic accumulation in the total dry matter. So it is concluded that "Araticum-de-terra-fria" seedlings grown under intermediate nutrient concentrations of complete nutrient solution Hoagland and Arnon (1950) nº 2, explored more adequately their physiological potential that justify their adaptation in different nutritional conditions and allow reducing the amount of mineral nutrition of seedlings production.

scholarly journals The Contribution by Leaves of Different Age to New Growth of Subterranean Clover Plants Following the Removal of a Sulphur Stress I. Origin and Distribution of Dry Matter

1972 ◽  
Vol 25 (6) ◽  
pp. 1147 ◽  
Author(s):  
D Bouma ◽  
EAN Greenwood ◽  
EJ Dowling
Keyword(s):  
Growth Rate ◽  
Leaf Area ◽  
Relative Growth Rate ◽  
Dry Matter ◽  
Subterranean Clover ◽  
Area Ratio ◽  
Assimilation Rate ◽  
Relative Growth ◽  
Net Assimilation ◽  
Nutrient Solutions

During the first 3 days after transfer of moderately sulphur-deficient plants (S1) to full nutrient solutions, the relative growth rate (Rw) was considerably lower than that of plants raised at higher sulphur levels (S2 and Sa). This was reflected in a lower leaf area ratio of the S1 plants, and particularly in a reduction of nearly 50% in the net assimilation rate (EA). Net losses in dry matter from younger emerged leaves and petioles accounted for 25% of the dry matter in new leaves and petioles of S1 plants produced during this period.

scholarly journals RESPONS OF GROWTH ANALYSIS PARAMTERS OF SOME COTTON CULTIVARS TO INTEGRATED WEED MANAGEMENT

2016 ◽  
Vol 47 (1) ◽  
Author(s):  
Al-Chalabi & Hammood
Keyword(s):  
Growth Rate ◽  
Relative Growth Rate ◽  
Growth Analysis ◽  
Crop Growth ◽  
Net Assimilation Rate ◽  
Assimilation Rate ◽  
Relative Growth ◽  
Crop Growth Rate ◽  
Crop Density ◽  
Net Assimilation

A field experiment was conducted at the experimental field, Department of Field Crop - College of  Agriculture Abu-Ghraib- University of Baghdad, during summer season at 2012 and 2013, to determine the response of  growth analysis parameters in some cotton cultivars to Integrated Weed Management. A randomized complete block design (RCBD) arranged according to split-plot was used with three replicates, included six weed control treatments as Main-plots where as Sub-plots included eight cotton cultivars. The results showed various to response of  growth analysis parameters to weed control treatments , the treatment of weedfree with normal crop density of 106667 plant.h-1 and high crop density of 200000 plant.h-1 during 70 -90 days after sowing achieved highest crop growth rate of 10.80 , 9.87 g.m-2.day-1 at first season respectively and 9.81, 9.35 g.m-2.day-1 at second season respectively, and highest net assimilation rate of 1.668 , 1.208 mg.cm-2.day-1 at first season respectively, and 1.504 , 1.004 mg.cm-2. day-1 at second season respectively, highest relative growth rate of  50.48 , 48.52 mg.g-1. day-1 at first season respectively, and 38.49 , 37.78 mg.g-1.day-1 at second  season respectively , Has cultivar in first season and Marsomi-1 cultivar in second season achieved  highest crop growth rate of 9.62 , 9.03 g.m-2.day-1 respectively, highest net assimilation rate of 1.399 ,1.188 mg.cm-2.day-1 respectively, Abu-Ghraib5 cultivar achieved highest relative growth rate of  57.19 , 44.66 mg.g-1.day-1 at both season respectively. The treatment of half rate of trifluraline 1.2 L.h-1 applied with high crop density with Has cultivar achieved  highest crop growth rate of  9.29 g.m-2.day-1 at first season, and with Marsomi-1 cultivar of  9.92 g.m-2. day-1 at second season, and highest net assimilation rate with Has cultivar of 1.163 , 1.040 mg.cm-2. day-1  at both season respectively, highest relative growth rate with Cocker 310 cultivar of  36.17 , 39.14 mg.g-1.day-1  at both season respectively, this results confirmed the integrated among cultivars, herbicides, and high crop density to improve this characters .

Effects of Temperature and CO2Concentration on the Growth of Cotton (Gossypium hirsutum), Spurred Anoda (Anoda cristata), and Velvetleaf (Abutilon theophrasti)

Weed Science ◽  
1988 ◽  
Vol 36 (6) ◽  
pp. 751-757 ◽  
Author(s):  
David T. Patterson ◽  
Maxine T. Highsmith ◽  
Elizabeth P. Flint
Keyword(s):  
Dry Matter ◽  
Dry Weight ◽  
Net Assimilation Rate ◽  
Assimilation Rate ◽  
Short Term ◽  
Leaf Weight ◽  
Matter Production ◽  
Total Plant ◽  
Net Assimilation ◽  
Total Dry Weight

Cotton, spurred anoda, and velvetleaf were grown in controlled-environment chambers at day/night temperatures of 32/23 or 26/17 C and CO2concentrations of 350 or 700 ppm. After 5 weeks, CO2enrichment to 700 ppm increased dry matter accumulation by 38, 26, and 29% in cotton, spurred anoda, and velvetleaf, respectively, at 26/17 C and by 61, 41, and 29% at 32/23 C. Increases in leaf weight accounted for over 80% of the increase in total plant weight in cotton and spurred anoda in both temperature regimes. Leaf area was not increased by CO2enrichment. The observed increases in dry matter production with CO2enrichment were caused by increased net assimilation rate. In a second experiment, plants were grown at 350 ppm CO2and 29/23 C day/night for 17 days before exposure to 700 ppm CO2at 26/17 C for 1 week. Short-term exposure to high CO2significantly increased net assimilation rate, dry matter production, total dry weight, leaf dry weight, and specific leaf weight in comparison with plants maintained at 350 ppm CO2at 26/17 C. Increases in leaf weight in response to short-term CO2enrichment accounted for 100, 87, and 68% of the observed increase in total plant dry weight of cotton, spurred anoda, and velvetleaf, respectively. Comparisons among the species showed that CO2enrichment decreased the weed/crop ratio for total dry weight, possibly indicating a potential competitive advantage for cotton under elevated CO2, even at suboptimum temperatures.

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