Functional relationships of leafing intensity to plant height, growth form and leaf habit

Foliar applications of paclobutrazol significantly reduced height growth and internode length in Eucalyptusglobulus Labill. seedlings. Monthly applications of 125 or 500 mg/L had a more pronounced effect than one single application of 125, 500, or 2000 mg/L. The greatest reduction in plant height was achieved by applying 500 mg/L at monthly intervals over 5 months. Two months after this treatment was ceased the growth retardant effects persisted.

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The Effect of Pythium ultimum and Soil Flooding on Two Soybean Cultivars

Plant Disease ◽

10.1094/pd-90-0597 ◽

2006 ◽

Vol 90 (5) ◽

pp. 597-602 ◽

Cited By ~ 19

Author(s):

M. T. Kirkpatrick ◽

C. S. Rothrock ◽

J. C. Rupe ◽

E. E. Gbur

Keyword(s):

Plant Height ◽

Growth Stage ◽

Soil Layer ◽

Dry Weight ◽

Pythium Ultimum ◽

Height Growth ◽

Root Weight ◽

Infested Soil ◽

Soil Flooding ◽

Top Dry Weight

The effect of flooding and Pythium ultimum on soybean, Glycine max, was determined in a series of greenhouse experiments using the cultivars Hutcheson and Archer. Seeds were planted into pasteurized soil either not infested or infested with sand-cornmeal inoculum of P. ultimum and either flooded at emergence for 2 days or at the four leaf node stage (V4) for 5 days. A nonflooded control was included in each experiment. Seeds placed directly into infested soil resulted in little or no stand for Hutcheson regardless of flood treatment, whereas stand was reduced for Archer only in the flooded infested soil treatment. Additional experiments were conducted by placing seed onto a 2- to 5-mm layer of pathogen-free soil on top of the infested soil. Flooding at emergence reduced plant height, growth stage, and top dry weight for Hutcheson and root fresh weight for both cultivars. Greater reductions for Hutcheson in root weight, and top dry weight in P. ultimum-infested soil in the soil layer experiments, also indicated that Hutcheson was more susceptible than Archer. Flooding alone decreased root weights, and infestation with P. ultimum reduced weights further resulting in an additive effect. This also was the case for plant height, growth stage, and top dry weight for Hutcheson for flooding at emergence. Root discoloration was greatly increased for both cultivars in infested soil flooded at emergence. Similar results were found when plants were flooded at V4; however, the effect was not as great as with flooding at emergence. These studies indicate that Pythium damping-off and root rot may account for a portion of the negative response of soybean to flooding. The results also indicate that Archer has some resistance to P. ultimum.

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Pemanfaatan Ampas Sagu sebagai Mulsa Organik dalam Peningkatkan Pertumbuhan Tanaman Sagu (Metroxylon sagu Rottb.) Di Lapang

Cassowary ◽

10.30862/casssowary.cs.v5.i1.94 ◽

2021 ◽

Vol 4 (1) ◽

pp. 112-118

Author(s):

Mikhael Sada ◽

Florentina Heningtyas Listyorini ◽

Barahima Abbas

Keyword(s):

Experimental Method ◽

Plant Height ◽

Leaf Growth ◽

Block Design ◽

Height Growth ◽

Energy Sources ◽

Sago Palm ◽

Randomized Block Design ◽

The World ◽

Metroxylon Sagu

Sago palm need to be cultivated intensively for increasing carbohydrate resources to anticipate the deficiency of energy sources of the world. This study aims to measure the influences of sago dregs to the sag palm growth in the field. The experimental method used in this works was Randomized Block Design that consisting of five treatments sago dregs weights in the russet stages of sago palm. The composition of the treatment is follows: without sago dregs (P0), 5 kg sago dregs tree-1 (P1), 10 kg of sago dregs tree-1 (P2), 15 kg sago dregs tree-1 (P3), 20 kg sago dregs tree-1 (P4). The results showed that sago dregs had a significant effect of the spear leaves growth, but not significantly effect of the plant height growth, number of leaflets growth, and number of leaflets. Utilization of 10 kg sago dregs tree-1 as mulch was calculated influence of the spear leaf growth and utilization of 20 kg sago dregs as mulch inhibitory of sago palm growth.

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(64) Effect of Plug Flats on Posttransplant Growth and Prevention of Stunting

HortScience ◽

10.21273/hortsci.40.4.1012c ◽

2005 ◽

Vol 40 (4) ◽

pp. 1012C-1012

Author(s):

Aliya Donnell ◽

John Dole

Keyword(s):

Growth Rate ◽

Gibberellic Acid ◽

Plant Height ◽

Light Quality ◽

Growth Form ◽

Normal Growth ◽

Optimal Time ◽

Nitrogen Enrichment ◽

Cut Flower ◽

Bedding Plant

Plug production is an integral part of today's floriculture industry. However, if seedlings are held in plug flats for too long, they may not return to a normal growth rate after transplanting. Stunting may render plants unsuitable for sale. Common bedding plant and cut flower species were grown in 288-plug flats to determine how long plugs could be held in the flats and still regain a normal growth rate and desirable growth form after transplanting. Species surveyed included: Antirrhinum, Begonia, Brassica, Callistephus, Celosia, Consolida, Dianthus, Eustoma, Gazania, Helianthus, Impatiens, Lycopersicon, Matthiola, Tagetes, and Viola. Ten randomly selected plugs were transplanted to 15- or 17-cm pots every 1 or 2 weeks for 10 weeks, when root balls were sufficiently developed to hold together after removal from the flat. Overall plant height was recorded for all species every 1 or 2 weeks. Plant diameter was recorded every 2 weeks for Begonia, Celosia, Eustoma, Helianthus, Impatiens, Lycopersicon, and Tagetes. A plug was considered to be stunted if it died after transplanting or did not resume a normal growth rate. Species that exhibited stunting included Brassica, Callistephus, Celosia, Consolida, Dianthus, and Tagetes. For example, Consolida seedlings held in the plug flat for 7 weeks after optimal transplanting time were six times smaller than those that were transplanted at the optimal time. Several factors were investigated to determine how they affected the degree of stunting, including: light quality, root obstruction, nitrogen enrichment prior to transplanting, gibberellic acid addition prior to transplanting, teasing of the root ball prior to transplanting, and length of drainage column.

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Patterns of leaf phenology in forest understory

Canadian Journal of Botany ◽

10.1139/b94-055 ◽

1994 ◽

Vol 72 (4) ◽

pp. 409-414 ◽

Cited By ~ 58

Author(s):

Shigeru Uemura

Keyword(s):

Snow Cover ◽

Shade Tolerance ◽

Growth Form ◽

Light Regime ◽

Forest Understory ◽

Leaf Habit ◽

Canopy Trees ◽

High Insulation ◽

Rapid Emergence ◽

Foliar Phenology

Foliar phenologies of forest understory plants were categorized, and the distribution pattern of leaf habit was examined among different forest environments. Various patterns of foliar phenology were found, especially in herbaceous plants. In addition to the seasonal light regime controlled by the phenology of canopy trees, differences in the length of period with snow cover led to the divergence. Perennial-leaved plants predominate in intensely shaded habitats while annual-leaved plants are more abundant in less shaded habitats. The shade tolerance of perenniel-leaved plants can be considered a preadaptation to snow tolerance. In contrast with the perennial-leaved plants, biennial-leaved plants with leaves overwintering 1 year appear to be favored in euphotic habitats with high insulation both in spring and in autumn. These species are effective competitors in spring because of rapid emergence of current leaves, probably through retranslocation of resources accumulated in the previous year. Another adaptive trait is found in heteroptic plants simultaneously having summer-green leaves and overwintering leaves; these types of leaves seem to function in predictable and quite different environments in a year. Key words: foliar phenology, growth form, light resource, overwintering leaf, snow cover.

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Further Development of the Dynamic Growth Model of Plant Height Growth

Flora ◽

10.1016/s0367-2530(17)31760-7 ◽

1974 ◽

Vol 163 (5) ◽

pp. 357-370 ◽

Cited By ~ 10

Author(s):

P. Hari ◽

M. Leikola

Keyword(s):

Plant Height ◽

Growth Model ◽

Height Growth ◽

Dynamic Growth ◽

Further Development

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Growth of three types of sengon (Paraserianthes spp.) in varying planting spaces in agroforestry system

Biodiversitas Journal of Biological Diversity ◽

10.13057/biodiv/d221035 ◽

2021 ◽

Vol 22 (10) ◽

Author(s):

Frisilia Sopacua ◽

NURHENI WIJAYANTO ◽

DESTA WIRNAS

Keyword(s):

Growth Rate ◽

Plant Height ◽

Optimal Growth ◽

Agroforestry System ◽

Height Growth ◽

Stem Diameter ◽

Diameter Growth ◽

Canopy Area ◽

Stem Diameter Growth ◽

Area Data

Abstract. Sopacua F, Wijayanto N, Wirnas D. 2021. Growth of three types of sengon (Paraserianthes spp.) in varying planting spaces in agroforestry system. Biodiversitas 22: 4423-4430. Sengon (Paraserianthes spp.) is a fast-growing tree species that is commonly cultivated in the agroforestry system by communities in Indonesia, mainly on Java Island. Among several types of sengon, Solomon sengon is currently gaining popularity due to the fast growth in height and stem diameter. Nonetheless, the spacing layout of selected sengon types is unclear, including Solomon sengon, which yields more optimal growth. This study aimed to examine the growth of three sengon types (i.e., Solomon F2, Solomon F1, and local Kendal) in three spacing patterns, namely 1.5x1.5m, 3x1.5m, and 3x3m. This research was conducted from October 2019 to January 2020 (three months) in the Cikabayan Forest, Bogor Agricultural University, Bogor, West Java. The parameters of sengon growth observed were plant height, height growth rate, stem diameter, stem diameter growth rate, tree volume, and canopy area. Data analysis was performed using ANOVA and continued with Duncan's. The results showed that all types of sengon had optimal growth in the agroforestry system at various spacings. The growth of Solomon F2 adapted well to denser spacings (1.5x1.5m and 1.5x3m) with the highest averages in plant height, stem diameter, volume, and canopy area of ??10.50 m, 8.65 cm, 0.36 m3, and 5.39 m2. Local Kendal had optimal growth at a wider spacing (3x3m) with the highest average stem diameter, volume, and canopy area of ??8.96 cm, 0.043 m3, and 1063 m2. While Solomon F1 adapted well to the three spacings with the highest average in plant height, the growth rate of plant height, stem diameter, volume, and canopy area of ??10.05 m, 1.54 m, 8.59 cm, 0.042 m2, and 2075.30 m2. In general, it can be concluded that the Solomon F1 sengon can adapt well to narrow distances or wide distances. While Solomon F2 is more recommended to be planted at a narrower distance and Kendal local sengon is more recommended to be planted at a wider distance to get optimal growth.

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Pengaruh Pemberian Dosis Pupuk Biourin Terhadap Pertumbuhan Dan Hasil Tanaman Sawi Putih (Brassica chinensis L.)

AGRICA ◽

10.37478/agr.v13i2.805 ◽

2020 ◽

Vol 13 (2) ◽

pp. 199-211

Author(s):

Albertus Agung Neno

Keyword(s):

Plant Height ◽

Height Growth ◽

Growth And Yield ◽

Optimum Dose ◽

Fresh Weight ◽

Brassica Chinensis ◽

Number Of Leaves ◽

Total Average ◽

Total Average Number

This study aims to determine the effect of Biourine fertilizer dosage on the growth and production of chicory and to determine the optimum dose of Biourine fertilizer in increasing growth and yield of chicory is BU0 0, litre/ha (control) BU1, 4000 liters/ha or equivalent to 2. ltr / plot BU2, 8000 litres / ha or equivalent to 4 ltr / plot BU3,12,000 litres / ha or equivalent to 6 litres / plot BU4.16,000 litres / ha or the equivalent of 8 ltr / plot. The observation variable of plant height growth was 0.94%, the total average number of leaves was 3.48%, the total average crop diameter was 2.51%, the total average fresh weight of ton-1 stover was 2.23%. , the total average fresh weight of stover ha-1 was 2.23%. The results of this study indicate that dosing of biourine fertilizer can increase the percentage of growth and yield of chicory (Brassica Chinensis L), namely plant height of 0.94%, number of leaves by 3.48%, crop diameter of 2.51%, fresh weight. cropping was 2.23% and fresh weight per hectare was 2.23%. The optimum dose of biourine fertilizer for the best chicory plants in increasing the growth of chicory is 16,000 litres / ha which gives a plant height growth of 24.47 cm, the number of leaves is 14.35, crop diameter is 13.95 cm, fresh weight of stover. plants amounted to 486.25 grams/plant and 475.40 grams/plant, the fresh weight of plant stover per hectare was 19.45 tons/ha and 19.02 tons/ha.

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MEDIA AMENDED WITH BROILER LITTER COMPOST DID NOT AFFECT POINSETTIA GROWTH

HortScience ◽

10.21273/hortsci.30.3.439d ◽

1995 ◽

Vol 30 (3) ◽

pp. 439d-439

Author(s):

V.V. Allen ◽

B.K. Behe ◽

T.S. Krentz ◽

C.C. Montgomery

Keyword(s):

Surface Water ◽

Plant Height ◽

Crop Production ◽

Poultry Manure ◽

Height Growth ◽

Plant Production ◽

Organic N ◽

Growth Indices ◽

Broiler Litter ◽

The Media

Organic wastes have the potential to contaminate ground and surface water supplies when overused in agronomic crop production. Poultry manure contains organic N and can be composted and partially substitute for fertilizer or peatmoss in plant production. Our objective was to determine the effects on growth of poinsettias `Freedom' and `Supjibi Red' grown in media amended with broiler litter compost (BLC). Media were developed to resemble a commercial peat-lite medium by blending BLC, peatmoss, and perlite, by volume (BLC: peat: perlite) at 1:3:4, 2:2:4, 3:1:4, and 4:0:4. Plant height, growth indices, number of fully developed bracts, and visual marketability rating were not affected by adding BLC to the media.

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