scholarly journals Relationship of Black Vine Weevil Egg Density and Damage to Two Cranberry Cultivars

HortScience ◽  
2012 ◽  
Vol 47 (6) ◽  
pp. 755-761
Author(s):  
Betsey Miller ◽  
Denny J. Bruck ◽  
Vaughn Walton
Keyword(s):  
Leaf Area ◽  
Water Use ◽  
Shoot Length ◽  
Root Weight ◽  
Plant Water ◽  
Root Damage ◽  
Plant Water Use ◽  
Egg Density ◽  
Black Vine Weevil ◽  
Shoot Weight

Black vine weevil (BVW), Otiorhynchus sulcatus (Coleoptera: Curculionidae, Fabricius), is a serious pest of cranberry, Vaccinium macrocarpon Ait. Larvae feed undetected within the soil and cause damage to roots and underground vines. We correlated damage caused by feeding larvae from known BVW egg densities. Two cultivars of potted cranberry vines, ‘Stevens’ and ‘McFarlin’, were inoculated with 0, 5, 10, 20, 40, and 80 eggs per pot. Root damage and canopy health were assessed. ‘Stevens’ exceeded ‘McFarlin’ in dry shoot weight, total shoot length, total leaf area, and dry root weight before egg treatments. Damage to underground vines increased with increasing egg density and more damage was found in ‘Stevens’ than ‘McFarlin’ at the highest egg densities. In August, plant water use and total shoot length in ‘McFarlin’ were significantly greater in plants treated with 0–5 eggs per pot compared with plants treated with 40–80 eggs per pot. The effect on total shoot length was more pronounced in October. ‘Stevens’ showed no response to increasing BVW density for up to 24 weeks. Destructive measurements showed decreased root weight in ‘McFarlin’ but not ‘Stevens’. Both cultivars showed a similar decrease in dry shoot weight, total shoot length, and percent green leaf area with increasing BVW egg density. Root damage increased as BVW egg density increased and this damage resulted in reduced plant water use for ‘McFarlin’. Reduced shoot growth and leaf area was recorded for both cultivars, although these effects were more apparent in ‘McFarlin’ and at an earlier stage than in ‘Stevens’.

scholarly journals Tactile Conditioning Increases Water Use by Tomato

1997 ◽  
Vol 122 (2) ◽  
pp. 285-289 ◽  
Author(s):  
Marc van Iersel
Keyword(s):  
Gas Exchange ◽  
Leaf Area ◽  
Water Use ◽  
Water Flux ◽  
Plant Water ◽  
Plant Water Use ◽  
Whole Plant ◽  
Reduced Height ◽  
Dry Down ◽  
Stem Water

Mechanical conditioning can be used to control the height of vegetable and ornamental transplants. Previous research indicated that brushing plants increases cuticular water loss from detached leaves, which may be an indication of decreased drought resistance. This might decrease post-transplant survival of the plants. The objectives of this study were to determine the effect of brushing on growth and gas exchange by tomato (Lycopersicon esculentum Mill.) and quantify whole-plant water use during a slow dry-down period. Tomato plants were grown from seed in a greenhouse during Fall 1995. The brushing treatment started 11 days after seeding and consisted of 40 strokes, twice each day. After 39 days of treatment, brushing reduced height 32%, leaf area 34%, and shoot dry mass 29% compared to control plants. Brushing did not affect leaf gas exchange. Brushed plants had a higher stem water flux than control plants during the first 3 days of a 6-day dry-down period. Stem water flux was lower than that of control plants later in the cycle, presumably because brushed plants used more of the available water during the first 3 days. On the third day of the dry-down period, leaf conductance of brushed plants was 35% higher than that of control plants, resulting in a 10% higher transpiration rate per unit leaf area. Because brushed plants had less leaf area than controls, differences in whole-plant water use were small. Time to wilting was similar for the brushed and unbrushed plants (6 days after withholding water). It seems unlikely that brushing would have a major effect on drought tolerance of plants.

Nano-ZnO alleviates drought stress via modulating the plant water use and carbohydrate metabolism in maize

2020 ◽  
pp. 1-15
Author(s):  
Luying Sun ◽  
Fengbin Song ◽  
Xiancan Zhu ◽  
Shengqun Liu ◽  
Fulai Liu ◽  
...  
Keyword(s):  
Drought Stress ◽  
Carbohydrate Metabolism ◽  
Water Use ◽  
Plant Water ◽  
Nano Zno ◽  
Plant Water Use

scholarly journals Chemical manipulation of plant water use

2016 ◽  
Vol 24 (3) ◽  
pp. 493-500 ◽  
Author(s):  
Jonathan D.M. Helander ◽  
Aditya S. Vaidya ◽  
Sean R. Cutler
Keyword(s):  
Water Use ◽  
Plant Water ◽  
Plant Water Use

Growth of Arabidopsis thaliana and Eutrema salsugineum in a closed growing system designed for quantification of plant water use

2016 ◽  
Vol 193 ◽  
pp. 110-118 ◽  
Author(s):  
Jhon F. Sandoval ◽  
Chan Yul Yoo ◽  
Michael J. Gosney ◽  
Michael V. Mickelbart
Keyword(s):  
Arabidopsis Thaliana ◽  
Water Use ◽  
Plant Water ◽  
Plant Water Use ◽  
Eutrema Salsugineum

Isolation, identification and characterization of native plant growth promoting bacteria and their plant growth promotion in Zea mays

2021 ◽  
Vol 16 (8) ◽  
pp. 75-80
Author(s):  
Pitchaiah Pelapudi ◽  
Sasikala Ch ◽  
Swarnabala Ganti
Keyword(s):  
Plant Growth ◽  
Plant Growth Promotion ◽  
Root Length ◽  
Growth Promotion ◽  
Shoot Length ◽  
Root Weight ◽  
Plant Growth Promoting Bacteria ◽  
Plant Growth Promoting ◽  
Growth Promoting ◽  
Shoot Weight

In the present rapid growing world, need for a sustainable agricultural practice which helps in meeting the adequate food demand is much needed. In this context, plant growth promoting bacteria were brought into the spot light by the researchers. Though the plant growth promoting bacteria have several beneficial applications, due to some of the disadvantages in the field conditions, they lagged behind. In the current research work, native PGPR were isolated from the rhizosphere soil samples of maize with an aim to isolate the nitrogen fixing, phosphate solubilising and potash solubilising bacteria. Out of the several isolates, potent PGPR isolates viz., Paenibacillus durus PCPB067, Bacillus megaterium PCBMG041 and Paenibacillus glucanolyticus PCPG051 were isolated and identified by using the 16 S rRNA gene sequencing studies. Genomic DNA sequences obtained were deposited in the NCBI Genbank and accession numbers were assigned as MW793452, MW793456 and MW843633. In order to check the efficacy of the PGPR isolates, pot trials were conducted by taking maize as the host plant. Several parameters viz. shoot length, shoot weight, root length, root weight and weight of the seeds were tested in which PGP treatment showed good results (shoot length - 187±3.5 cm, shoot weight - 31±4 g, root length - 32±3.6 cm, root weight - 17±2 g, yield- 103.3±6.1 g) when compared to the chemical fertilizer treatment (shoot length - 177±3.5 cm, shoot weight - 25±3.6 g, root length - 24±3.5 cm, root weight - 14.6±1.52 g, yield- 85.6±7.6 g). Based on the results, it can be stated that these native PGPR isolates can be effectively used in the plant growth promotion of maize.

Impact of the CO2 requirement on plant water use

1974 ◽  
Vol 14 (1-2) ◽  
pp. 99-112 ◽  
Author(s):  
Richard W. Tinus
Keyword(s):  
Water Use ◽  
Plant Water ◽  
Plant Water Use

Functional Differences in Soil Water Pools: a New Perspective on Plant Water Use in Water-Limited Ecosystems

2008 ◽  
pp. 397-422 ◽  
Author(s):  
Ronald J. Ryel ◽  
Carolyn Y. Ivans ◽  
Michael S. Peek ◽  
A. Joshua Leffler
Keyword(s):  
Soil Water ◽  
Water Use ◽  
Plant Water ◽  
Functional Differences ◽  
Plant Water Use ◽  
New Perspective

scholarly journals Impacts of different salt source and concentrations on germination and seedling growth of many pumpkin seeds used as rootstoch in Iran

Genetika ◽  
2012 ◽  
Vol 44 (2) ◽  
pp. 235-250 ◽  
Author(s):  
Ahmad Dadashpour
Keyword(s):  
Electrical Conductivity ◽  
Seed Germination ◽  
Seedling Growth ◽  
Root Length ◽  
Germination Rate ◽  
Shoot Length ◽  
Root Weight ◽  
Pumpkin Seeds ◽  
High Concentrations ◽  
Shoot Weight

The effects of different salt sources (C Cl2, NaCl, and KCl) and concentrations, as measured by electrical conductivity, (0, "control", 1, 3, 5, 7 and 9 dS m-1) on seed germination and seedling growth of ?Ferro?, ?Obez?, ?RS 841? and ?Strong Tosa F1? pumpkin varieties used as rootstock were investigated in this study. The results showed that germination rate, root length, shoot length, fresh root weight, dry root weight, fresh shoot weight and dry shoot weights tend to decrease when the electrical conductivity of the solution is higher than 5 dS m-1, independent of salt sources and in all of the varieties. Three days after seeding, a germination ratio of 5 % was obtained from RS 841 variety in all salt source and concentrations, while a germination ratio over 50 % was obtained in ?Strong Tosa? variety for the same conditions except CaCl2 salt source. Nevertheless, seeds germinated in medium having high concentrations of CaCl2 had lower germination rate and poor seedling growth, compared to media having the same concentrations of NaCl and KCl. It was concluded that all of the varieties studied were more sensitive to the concentrations prepared using CaCl2 than that of the KCl, and NaCl.

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