Growth analysis of winter wheat cultivars as affected by nitrogen fertilization / Wachstumsanalyse von Winterweizensorten in Abhängigkeit von Stickstoffdüngung

Summary Growth analysis helps explain the differences in yield and growth potential between cultivars in response to management practices and environmental conditions. The aim of the research was: (i) to investigate the effect of nitrogen fertilization on the growth and growth parameters of different wheat (Triticum aestivum L.) cultivars and (ii) to study the relationship between yield and growth parameters at the individual plant and plant stand level. In the two-factorial, split-plot experiment, the main plot was the nitrogen (N) treatment and the sub-plot was the cultivar. In response to N fertilization, the values of growth rate parameters increased up to the N160 treatment. The mean values of crop growth rate (g m-2 day-1) in the treatments were as follows: N0: 10.4, N80: 15.4, N160: 17.2 and N240: 16.3. The leaf area index, leaf area duration and especially the duration of the flag-leaf gave a good reflection of the effect of N fertilization. Multiple regression analysis demonstrated the significant effect of growth rates, size and duration of leaf area, biomass distribution and yield components on the yield. The results showed that understanding the growth of plants is important for optimizing management decisions.

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Growth Analysis of Quinoa (Chenopodium quinoa Willd.) in Response to Fertilization and Soil Tillage

Notulae Botanicae Horti Agrobotanici Cluj-Napoca ◽

10.15835/nbha47411657 ◽

2019 ◽

Vol 47 (4) ◽

pp. 1025-1036 ◽

Cited By ~ 1

Author(s):

Ioanna KAKABOUKI ◽

Ioannis E. ROUSSIS ◽

Panagiota PAPASTYLIANOU ◽

Panagiotis KANATAS ◽

Dimitra HELA ◽

...

Keyword(s):

Growth Rate ◽

Leaf Area ◽

Growth Analysis ◽

Growth Parameters ◽

Conventional Tillage ◽

Crop Growth ◽

Growth And Yield ◽

Soil Tillage ◽

Digital Object Identifier ◽

Area Index

Growth analysis is an appropriate method for plant response to various environmental and cultural conditions during plant life. A 2-year experiment was conducted to evaluate the effect of soil tillage and fertilization on the growth and growth parameters of quinoa crop and to determine the association between yield and growth characteristics at both the single plant and crop stand level. The experiment was laid out in a split-plot design with two replicates, two main plots [conventional (CT) and minimum tillage (MT)] and four sub-plots [fertilization treatments: untreated, inorganic fertilization of 100 (N1) and 200 kg N ha-1 (N2) and sheep manure]. The highest absolute growth rate (AGR) and crop growth rate (CGR) values were recorded between the middle of vegetative growth stage and the beginning of anthesis (50-75 DAS) under conventional tillage coupled with manure (AGR: 0.4577 g day-1, CGR: 11.44 g m-2 day-1) and with N2 treatment (AGR: 0.4521 g day-1, CGR: 11.31 g m-2 day-1). Concerning specific leaf area (SLA), the highest value (150.58 cm2 g-1) was found at 75 DAS in N2 treatment. Leaf area index (LAI) were positively affected by soil tillage and fertilization with greatest values found under conventional tillage coupled with N2 treatment (5.110 m2 m-2). The highest seed yield was observed in N2 treatment (2488 and 2388 kg ha-1 under CT and MT, respectively). As a conclusion, the cultivation under conventional tillage and the increasing levels of applied nitrogen up to 200 kg N ha-1 increases crop growth and yield. ********* In press - Online First. Article has been peer reviewed, accepted for publication and published online without pagination. It will receive pagination when the issue will be ready for publishing as a complete number (Volume 47, Issue 4, 2019). The article is searchable and citable by Digital Object Identifier (DOI). DOI link will become active after the article will be included in the complete issue. *********

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Growth Analysis of Watermelon Plants Grown with Mulches and Rowcovers

Journal of the American Society for Horticultural Science ◽

10.21273/jashs.120.6.1001 ◽

1995 ◽

Vol 120 (6) ◽

pp. 1001-1009 ◽

Cited By ~ 19

Author(s):

Nader Soltani ◽

J. LaMar Anderson ◽

Alvin R. Hamson

Keyword(s):

Growth Rate ◽

Leaf Area ◽

Growth Analysis ◽

Citrullus Lanatus ◽

Total Yield ◽

Carbon Dioxide Concentration ◽

Male Flower ◽

Female Flower ◽

Plastic Mulch ◽

Area Index

`Crimson Sweet' watermelon [Citrullus lanatus (Thunb.) Matsum. & Nakai] plants were grown with various mulches and rowcovers and analyzed for relative growth rate (RGR), net assimilation rate (NAR), specific leaf area (SLA), leaf area index (LAI), and crop growth rate (CGR). Spunbonded polyester fabric (SB-PF) and perforated polyethylene film (PCP) rowcovers generally showed greater mean RGR, SLA and CGR than spunbonded polypropylene polyamide net (SB-PP), black plus clear combination plastic mulch and black plastic mulch alone. Plants on mulches and under rowcovers showed significant increases in RGR, NAR, and SLA over plants grown in bare soil. Carbon dioxide concentration inside the transplanting mulch holes was nearly twice the ambient CO, concentration. Growth analysis of sampled watermelon plants during early stages of development under various treatments was predictive of crop yield. Plants under SB-PF and PCP rowcovers produced the earliest fruit and the greatest total yield. An asymmetrical curvilinear model for watermelon growth and development based on cardinal temperatures was developed. The model uses hourly averaged temperatures to predict growth and phenological development of `Crimson Sweet' watermelon plants grown with and without rowcovers. Early vegetative growth correlated well with accumulated heat units. Results indicate a consistent heat unit requirement for the `Crimson Sweet' watermelon plants to reach first male flower, first female flower and first harvest in uncovered plants and plants under rowcovers. Greater variability was observed in predicting date of first harvest than first bloom.

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Growth Analysis of Wheat Using Machine Vision: Opportunities and Challenges

Sensors ◽

10.3390/s20226501 ◽

2020 ◽

Vol 20 (22) ◽

pp. 6501

Author(s):

Mohammad Ajlouni ◽

Audrey Kruse ◽

Jorge A. Condori-Apfata ◽

Maria Valderrama Valencia ◽

Chris Hoagland ◽

...

Keyword(s):

Growth Rate ◽

Machine Vision ◽

Leaf Area ◽

Relative Growth Rate ◽

Growth Analysis ◽

Growth Parameters ◽

Dry Weight ◽

Projected Area ◽

Relative Growth ◽

Leaf Dry Weight

Crop growth analysis is used for the assessment of crop yield potential and stress tolerance. Capturing continuous plant growth has been a goal since the early 20th century; however, this requires a large number of replicates and multiple destructive measurements. The use of machine vision techniques holds promise as a fast, reliable, and non-destructive method to analyze crop growth based on surrogates for plant traits and growth parameters. We used machine vision to infer plant size along with destructive measurements at multiple time points to analyze growth parameters of spring wheat genotypes. We measured side-projected area by machine vision and RGB imaging. Three traits, i.e., biomass (BIO), leaf dry weight (LDW), and leaf area (LA), were measured using low-throughput techniques. However, RGB imaging was used to produce side projected area (SPA) as the high throughput trait. Significant effects of time point and genotype on BIO, LDW, LA, and SPA were observed. SPA was a robust predictor of leaf area, leaf dry weight, and biomass. Relative growth rate estimated using SPA was a robust predictor of the relative growth rate measured using biomass and leaf dry weight. Large numbers of entries can be assessed by this method for genetic mapping projects to produce a continuous growth curve with fewer replicates.

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

Journal of the Asiatic Society of Bangladesh Science ◽

10.3329/jasbs.v43i1.46243 ◽

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

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GROWTH ANALYSIS OF A SWEETPOTATO CULTIVAR GROWN IN AN NFT SYSTEM

HortScience ◽

10.21273/hortsci.29.7.731c ◽

1994 ◽

Vol 29 (7) ◽

pp. 731c-731

Author(s):

Pauline P. David ◽

Audrey A. Trotman ◽

Desmond G. Mortley

Keyword(s):

Growth Rate ◽

Growth Analysis ◽

Growth Parameters ◽

Dry Weight ◽

Root Production ◽

Component Part ◽

Storage Root ◽

Storage Roots ◽

Area Index ◽

Total Plant

One of the major objective of growth analysis data is to provide a basic understanding of some of the mechanisms that affect plant growth. This study was initiated to evaluate the effects on several growth parameters when plants are grown in an NFT system. Vine cuttings (15 cm length) of the sweetpotato cultivar ``Georgia Jet” was grown in a closed NFT system for a period of 120 days. Nutrient was supplied in a modified half-strength Hoagland's solution with a N:K ratio of 1:2.4. Destructive harvesting of plants occurred at 14 day intervals at which time plants were separated into their various component parts and analyzed for dry weight accumulation, leaf area index, crop growth rate, relative growth rate and net assimilation rate. Results showed dry weight distribution within the plant had a linear response for all component part evaluated. Greatest contributors to total plant dry weight was stem followed by leaves, fibrous roots, buds and flowers. However, once storage root production occurred it contributed the largest percentage to total plant dry weight. LAI was optimum at 80 days after planting (DAP) while CGR and RGR fluctuated throughout the growing season. Initially NAR was higher in foliage than storage roots but declined once storage root enlargement began, suggesting a translocation of assimilates to storage root.

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

AgroTech Journal ◽

10.31327/atj.v4i1.907 ◽

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

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Leaf area index of potato (Solanum tuberosum L.) crop under three nitrogen fertilization treatments

Agronomía Colombiana ◽

10.15446/agron.colomb.v35n2.62110 ◽

2017 ◽

Vol 35 (2) ◽

pp. 171-175 ◽

Cited By ~ 1

Author(s):

Pedro Manuel Villa ◽

Lina Sarmiento ◽

Fermín José Rada ◽

Daniel Machado ◽

Alice Cristina Rodrigues

Keyword(s):

Leaf Area Index ◽

Leaf Area ◽

Nitrogen Fertilization ◽

Growth Parameters ◽

Solanum Tuberosum L ◽

Potato Crop ◽

Block Design ◽

Growth And Yield ◽

Phenological Stages ◽

Area Index

Nitrogen fertilization has considerable effects on growth and yield of potato crop. Leaf expansion is one of the most important growth parameters that can be used to optimize nitrogen fertilization management in agroecological practices. We evaluated the effect of nitrogen fertilization on the leaf area index (LAI) of potato crop during different phenological stages by two different methods. Experimental plots were established in a randomized block design with the following treatments: no nitrogen supply (0-N), 133 kg N ha-1 (133-N), and 400 kg N ha-1 (400-N), using the Granola variety, at the Andes region, Merida city, Venezuela. We measured leaf area at the main phenological stages of the crop using a plant canopy analyzer. LAI showed significant differences among treatments and phenological stages, except during the emergence stage. The maximum LAI values were obtained 55 days after emergence: 400-N (1.42±0.16) > 133-N (0.92±0.21) > 0-N (0.34±0.08). Nitrogen fertilization had a significant effect on the development of LAI in potato crop along its different phenological stages.

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The growth of vining peas: I. The effect of time of sowing

The Journal of Agricultural Science ◽

10.1017/s0021859600012740 ◽

1968 ◽

Vol 70 (3) ◽

pp. 393-402 ◽

Cited By ~ 21

Author(s):

G. M. Milbourn ◽

R. C. Hardwick

Keyword(s):

Growth Rate ◽

Leaf Area ◽

Growth Analysis ◽

Apical Meristem ◽

Area Index ◽

Apical Bud ◽

Rate Of Increase ◽

Morphogenetic Factors ◽

The Relationship ◽

Pod Growth

SUMMARYYield and growth analysis have been applied to the results of an experiment comparing early and late sown peas. Yield analysis showed that in this experiment late sown peas had:(i) fewer podding nodes per main stem,(ii) fewer pods per podding node, and(iii) a slower rate of increase in pod weight.The physiological origins of these differences are discussed.The first component is determined by the stage at which node production is terminated by the death of the apical bud.The second is determined by morphogenetic factors at the apical meristem early in in the life of the plant, when (in the variety DSP) either a single or a double flowered raceme is initiated, and also during the harvesting period when some pods are lost from the lower-most flowering nodes.The differences in the third component, the rate of increase in pod weight, could not be explained by conventional growth analysis. Pod growth rate was not a simple function of leaf area index.It is suggested that the relationship between leaf area and pod growth rate is complicated by the existence of other sources of materials for pod growth such as stored products in the roots and stems, and photosynthesis by the fruit itself.

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Growth analysis of poppies (Papaver somniferum L.)

Australian Journal of Agricultural Research ◽

10.1071/ar9820233 ◽

1982 ◽

Vol 33 (2) ◽

pp. 233 ◽

Cited By ~ 3

Author(s):

B Chung

Keyword(s):

Growth Rate ◽

Leaf Area Index ◽

Leaf Area ◽

Growth Analysis ◽

Crop Growth ◽

Maximum Difference ◽

Area Index ◽

Crop Growth Rate ◽

Plant Yield ◽

Total Plant

A growth analysis study of the effects of two contrasting environments on the yield of field grown poppies (Papaver somnifevum L.) was undertaken using regression techniques. The change in total plant yield during the 1977-78 season was found to be adequately fitted by a cubic polynomial equation. In contrast, the change in total plant yield during the 1976-77 season and the development of leaf area index in both seasons were found to be adequately fitted by quartic polynomial equations. The total plant yield in the 1977-78 season was considerably higher than that in the 1976-77 season from the beginning of December to dry maturity with a maximum difference of 2 200 kg/ha on 15 January. This yield difference can be attributed to the higher crop growth rate in the 1977-78 season from 30 November to 18 January with a maximum difference of 12 g/m2/day on 30 December. Leaf area index was considered to be more important than net assimilation rate in influencing the crop growth rate up to 20 December. The differences in leaf area between the two seasons could be attributed to the climatic conditions. Under Tasmanian conditions, poppy yields could be expected to be reasonably stable from year to year, provided that the crop is encouraged to grow at its optimum during the whole season.

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Influence of sulphur on morpho-physiological and yield parameters of rapeseed (Brassica campestris L.)

Bangladesh Journal of Agricultural Research ◽

10.3329/bjar.v37i4.14389 ◽

2013 ◽

Vol 37 (4) ◽

pp. 645-652 ◽

Cited By ~ 3

Author(s):

Ferdousi Begum ◽

Feroza Hossain ◽

Md Rafiqul Islam Mondal

Keyword(s):

Growth Rate ◽

Leaf Area ◽

Seed Yield ◽

Field Experiments ◽

Growth Parameters ◽

Research Station ◽

Dry Matter Accumulation ◽

Central Research ◽

Area Index ◽

Yield Attributes

Field experiments were conducted at the Central Research Station of Bangladesh Agricultural Research Institute (BARI), Joydebpur, Gazipur during the period from November to February in 2004-05 and 2005-06 to evaluate the effect of different levels of sulphur (0, 20, 40, 60, and 80 kg/ha) on rapeseed variety BARI Sarisha-15. Results showed that the most of the growth parameters and yield attributes were significantly influenced by different doses of sulphur. The growth parameters, yield and yield contributing characters were increased with the increasing levels of sulphur fertilizer up to 60 kg S/ha and with the doses beyond that were found to decrease. All growth parameters like plant height, leaf area, dry matter accumulation, leaf area index, crop growth rate, net assimilation rate, and relative growth rate and all yield components, such as number of siliquae per plant, seeds per siliqua, 1000-seed weight and seed yield per plant were found maximum from the treatment with 60 kg S/ha, which was at par with 80 kg S/ha. The highest seed yield (1990 and 1896 kg/ha) were found when S was used @ 60 kg/ha. The same treatment gave 24.71 % and 24.32 % higher seed yield than the control treatment, which were statistically identical with dose at 80 kg /ha of sulphur in both the years. DOI: http://dx.doi.org/10.3329/bjar.v37i4.14389 Bangladesh J. Agril. Res. 37(4): 645-652, December 2012

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