scholarly journals The effect of foliar application of seaweed extract on potato

1989 ◽  
Vol 61 (5) ◽  
pp. 371-377
Author(s):  
Paavo Kuisma
Keyword(s):  
Foliar Application ◽  
Growing Season ◽  
The Other ◽  
Seaweed Extract ◽  
Growth And Yield ◽  
Tuber Initiation ◽  
Long Day ◽  
Potato Growth ◽  
Commercial Seaweed Extract ◽  
Short Growing Season

The effect of foliar application of commercial seaweed extract on potato growth was studied in long-day conditions (60° 10' N 25°00' E) characterized by a cool and short growing season. The results showed that neither the doses, 0, 5, 10, 20 l/ha nor the spraying 24, 45, 58 days after the emergence had any remarkable influence on potato growth and yield if the other preconditions of production are in order. Only small, although insignificant benefit could be obtained with application done three weeks after emergence, clearly before tuber initiation.

scholarly journals Processing Potato Growth Performance as Affected by Foliar Application of Seaweed Extract and Boron

2020 ◽  
Vol 25 (1) ◽  
pp. 66-85
Author(s):  
Aly Abido ◽  
Abdelbaset Alkharpotly ◽  
Saed El-Hakim ◽  
Amira Abd El-Aziz
Keyword(s):  
Growth Performance ◽  
Foliar Application ◽  
Seaweed Extract ◽  
Potato Growth

scholarly journals 451 PB 294 BREEDING SAVORY PEPPER” FOR ADAPTATION IN NORTHEAST U.S

HortScience ◽  
1994 ◽  
Vol 29 (5) ◽  
pp. 496a-496 ◽  
Author(s):  
Paul Grun ◽  
M.D. Orzolek
Keyword(s):  
South America ◽  
Growing Season ◽  
The Other ◽  
Clay Loam ◽  
Capsicum Chinense ◽  
Culture Methods ◽  
Northern South America ◽  
Generation Male ◽  
Species Isolation ◽  
Short Growing Season

Savory Peppers™ (Sp™) is the low heat form of Capsicum chinense from northern South America where it is widely used as a condiment. We are adapting it to northeastern conditions through introgression of genes from adapted C. annum, selection within SP™, and use of improved culture methods. Introgression is progressing in spite of species isolation barriers expressed as failure of F1 seeds to germinate, and F1 and later generation male sterilities. Selection has been carried out on plants of two landraces, producing ten improved strains which were tested at three stations last summer: 1) west PA on sandy soil with long growing season: 2) central PA on clay loam with short growing season, and 3) eastern PA on clay loam with long growing season. Strains of both landraces yielded well in region 1), and poorly in region 2), and one landrace yielded well in region 3), while those of the other yielded poorly as a result of early wilt. Roles of soil and temperatures in producing these results will be discussed.

scholarly journals Effect of chitosan foliar application on the performance and yield of soybean and maize under field conditions.

2022 ◽  
Author(s):  
Alfredo Junior Paiola Albrecht Junior ◽  
Leandro Paiola Albrecht ◽  
Henrique Lovatel Villetti ◽  
Vinicius Gabriel Caneppele Pereira ◽  
Giovana Orso ◽  
...  
Keyword(s):  
Field Experiments ◽  
Foliar Application ◽  
Growth Parameters ◽  
Morphological Characteristics ◽  
Chitosan Solution ◽  
Climatic Conditions ◽  
The Other ◽  
Growth And Yield ◽  
Yield Attributes ◽  
Culture Development

Abstract Chitosan is a natural heterogeneous polymer, non-toxic and find many potential applications in agriculture. The search of a biopolymer to replace the synthetic agrochemicals, the effects of foliar application of chitosan solution on agronomic performance under field experiments have been investigated in two consecutive harvests (2014/2015 and 2015) of soybean and maize. Two chitosan concentrations (0.5 and 1%) were sprayed four times during the culture development and the evaluation was based on morphological characteristics, growth and yield components. Seeds were collected to determine the content of macro- and micronutrients. Results revealed that most of the morphological and growth parameters (plant height, leaf number per plant) and yield attributes were not increased with the chitosan treatment in soybean and maize. The soybean treated with foliar application of chitosan 0.5% increased the accumulation of nitrogen by 9.14% when compared with the water treatment, but the effect was not consistent in both seasons and cultivars. The values of the other nutrients did not change the content. Maize plants treated with chitosan (0.5% or 1%) significantly decreased the boron concentration by 66.7% in the grains analyzed and may have influenced the plant development (height) without altering the other agronomic parameters. Therefore, whereas the climatic conditions in these two seasons were stable and biotic or abiotic stresses were not observed, foliar application of chitosan solution did not present differences that could establish a pattern of behavior in field experiments conducted by two harvests.

Effects of seaweed extract on yield and protein content of two common bean (Phaseolus vulgaris L.) cultivars

2017 ◽  
Author(s):  
S. Kocira ◽  
A. Kocira ◽  
R. Kornas ◽  
M. Koszel ◽  
M. Szmigielski ◽  
...  
Keyword(s):  
Phaseolus Vulgaris ◽  
Common Bean ◽  
Protein Content ◽  
Foliar Application ◽  
Growing Season ◽  
Ash Content ◽  
Seaweed Extract ◽  
Phaseolus Vulgaris L ◽  
Ecklonia Maxima

An experiment was conducted to investigate into the effects of Ecklonia maxima extract (Kelpak SL) on yield, protein and ash contents of two bean cultivars. The study was carried out in 2012 - 2014 in Poland. During the growing season, 0.2% and 0.4% solutions of the bio-stimulant were applied by single and double spraying of plants against a control. The highest number and weight of grains were found when the plants of ‘Toska’ cultivar were single sprayed with 0.2% seaweed extract. Double spraying the plants with the 0.4% solution of Kelpak SL increased the number, its weight and the number of pods in cultivar ‘Aura’. The application of Kelpak SL increased protein content of grains in both bean cultivars. Higher the dose the double foliar application of the bio-stimulant, more was the ash content of the grain of plants of ‘Toska’ cultivar.

Effect of shading at different times on the growth and yield of the potato

1976 ◽  
Vol 27 (4) ◽  
pp. 557 ◽  
Author(s):  
PJM Sale
Keyword(s):  
Dry Weight ◽  
The Other ◽  
Growth And Yield ◽  
Tuber Initiation ◽  
Full Sunlight ◽  
Tuber Bulking ◽  
Total Dry Weight ◽  
Bulking Rate

The effect of shading during the periods of new tuber initiation and subsequent bulking were studied with three crops of field-grown potatoes cv Sebago Plots were shaded (34% reduction on full sunlight) up to or after the stage when the young tubers had formed (3 weeks after the onset of initiation), receiving full sunlight for the other half of growth In other treatments plots were shaded throughout growth or not shaded at all In two experiments plots were split for two planting densities (7.14 and 14.28 tubers planted m-2), but density had no effect on the response to shade. Shade during the first part of growth did not affect the numbers of tubers initiation but, compared with unshaded plots, did reduce the numbers which reached a size of 1 cm in diameter or more, which was the same as the final numbers harvested at maturity Shade also delayed by a few days the onset of the rapid tuber-bulking period. Shade during later growth had some additional effect In reducing the maximum bulking rate achieved, so that the final yields from the differentially shaded plots were intermediate between those from the plots either unshaded or shaded throughout Plants receiving late shade had a higher percentage of their total dry weight In the haulm than did unshaded plants.

scholarly journals Physiological and genetic aspects of a diploid potato population in the Netherlands and Northern Finland

2006 ◽  
Author(s):  
A. Zaban ◽  
M. Veteläinen ◽  
C. B. Celis-Gamboa ◽  
R. Van Berloo ◽  
H. Häggman ◽  
...  
Keyword(s):  
The Netherlands ◽  
Solanum Tuberosum L ◽  
Potato Crop ◽  
Population Level ◽  
Growing Season ◽  
Tuber Formation ◽  
Day Length ◽  
Tuber Initiation ◽  
Long Day ◽  
Growing Conditions

Tuberization of potatoes exposed to different photoperiod regimes has been earlier investigated in several studies. However, there is still a limited understanding of the entire tuberization process and the factors influencing this process. One of the constraints of the previous studies has been the use of only one or a few genotypes. Furthermore, the experimental designs have not utilised the natural growing conditions with continuous changes in daylength during the growing season. The general aim of the project was to study the developmental dynamics of the broad-based potato (Solanum tuberosum L.) (CxE) population development at different climatical regimes under the very long-day, long-day and short conditions in Finland, the Netherlands and Ecuador/Venezuela, respectively. In this paper we are presenting some of the results achieved in the studies in Finland during the growing season 2004. In addition to population level trait characteristics we also describe here some of the identified QTLs (quantitative trait loci) for stolon related and tuber formation traits. In some cases we also compare the expression of some of the traits both in Finland and Netherlands.The main difference between the CxE population grown in Finland and the Netherlands was that the onset of flowering took place one week later in Finland. The relationship between tuber initiation and onset of flowering differed depending on the day length. In Finland approximately 70 % of the genotypes had swollen stolon tips before the onset of flowering, while in the Netherlands only 30 % of the genotypes had reached this condition. We also found numerous different trait linked QTLs, for example, a QTL associated with tuber formation was identified on chromosome E5, and QTLs associated with stolon characteristics on chromosomes E1, E4, E10 and E12. As a conclusion, the present preliminary results provide a good basis for determining the influence of different environmental conditions on potato development. In addition, the QTLs obtained in this study give a better understanding of the genetics of complex characters, and can be used in improving the potato crop in breeding programs.

scholarly journals Carbon and Nitrogen Reserves in Perennial Strawberry Affect Plant Growth and Yield

2008 ◽  
Vol 133 (6) ◽  
pp. 735-742 ◽  
Author(s):  
Laura Elisa Acuña-Maldonado ◽  
Marvin P. Pritts
Keyword(s):  
Foliar Application ◽  
Growing Season ◽  
Plant Size ◽  
Early Spring ◽  
Growth And Yield ◽  
N Application ◽  
N Content ◽  
Total N ◽  
Carbohydrate Concentration ◽  
Foliar Urea

Early spring growth of perennial strawberry (Fragaria ×ananassa Duch.) plants is supported by the carbohydrate and nitrogen (N) reserves accumulated from the previous growing season. The limitations of these reserves on the initial spring growth and yield of perennial strawberries have not been studied in detail, particularly the influence of N reserves. Differential N fertigation (0 to 20 mm N) was applied to potted strawberries during the growing season and a supplemental foliar urea application was applied to a portion of the plants in the fall to modify reserve N during dormancy. Plant N content and spring vegetative growth the year after fertigation increased nearly twofold with increasing N fertigation. Photosynthesis per unit leaf area also increased up to 10 mm of fertilizer N and then stabilized through 20 mm. Foliar urea application in fall further increased total plant N content and size, decreased carbohydrate concentration, and also decreased yield in plants with the most total N. Nitrogen fertigation was resumed on a portion of these plants in early spring, but new growth and subsequent yield were unaffected by spring N application. In a second experiment, CO2 enrichment with and without soil and foliar N application in the fall was used to vary carbon (C) and N reserves. CO2 enrichment in fall increased plant size and yield the next July by ≈20%, but total nonstructural carbohydrate and N concentrations were unaffected. Foliar urea application also increased N and C reserves (but not concentration) as well as yield in both enriched and unenriched plants. Although foliar urea in fall decreased carbohydrate concentration, total reserve levels were unaffected because treated plants were larger. In this experiment, spring N increased plant size by ≈50%, but yield was increased only 12%, suggesting that yields are mostly dependent on reserves. Increasing N reserves with a late fall foliar application is one strategy growers can use to efficiently enhance growth and yield in low to moderately fertilized plants.

scholarly journals Effect of Foliar Application of Seaweed Extract and Zincon Productivity of Dahlia hybrida cv. Albion

2019 ◽  
Vol 27 (2) ◽  
pp. 269-276
Author(s):  
Hassan Hadi Alkarawi ◽  
Sabaa Jawad Abd Alkadim
Keyword(s):  
Zinc Sulfate ◽  
Foliar Application ◽  
Dry Weight ◽  
Seaweed Extract ◽  
Growth And Yield ◽  
Control Treatment ◽  
Fresh Weight ◽  
Contributing Factors ◽  
Flower Diameter ◽  
Number Of Branches

       An experiment for the  agricultural season 2017  was carried out in pots in the Autumn season to study the effect of application three levels of Sea Top  foliar  fertilizer (0, 50,and 100 gm.L-1) and Three levels of zinc (zinc sulfate) was ( 0, 30, and60 mg. L-1) with three times spraying  intervals every20 days  for  some of  the growth and yield parameters  of the Dahlia cv. Albion. The spray concentration of zinc sulfate at level of 60 mg / L-1 and Seaweed at a level of 100 mg / L -1 had significant differences in plant height,  number of branches ,number of flowers per plant, flower diameter, fresh weight of flower,fresh weight of the tuber , number of tubers per plant, fresh weight  of the stalk,and dry weight of the vegetative parts ,compared with the control treatment. The increase was 115.16, 6.33, 12.0, 15.53, 25.66, 371.36, 6.66, 46.56, and 60.16  for the above qualities respectively. We conclude, that the application of Seaweed Extract and Zinc improved the yield contributing factors that resulted in a significant increase in Productivity of Dahlia hybridayield.

scholarly journals Effect of Foliar Application with seaweed extract (Acadian) on growth and Yield of two Saffron Cultivars).(Crocus sativus L

2021 ◽  
Vol 8 (3) ◽  
Author(s):  
Kefaia G. S. Al-Saad ◽  
Marwa M. O. Al-zubaidi
Keyword(s):  
Foliar Application ◽  
Block Design ◽  
Seaweed Extract ◽  
Growth And Yield ◽  
Crocus Sativus ◽  
Total Chlorophyll ◽  
Two Factors ◽  
Wet Weight ◽  
Crocus Sativus L ◽  
Number Of Shoots

"This study was conducted during September 2018 to May 2019 at the Lath house , belong to Horticulture and landscape Department / College of agriculture / Kirkuk university, to study the effect of foliar spraying with seaweed extract (Acadian) at different concentrations (0,1, 2) g. L-1 on the growth , and Yield of two Saffron Cultivars (Crocus sativus L.)first cultivar (Bunch)and the Second cultivar (Pushal) , The study was laid out in factorial Randomized Complete Block Design (R.C.B.D.) with two factors and each treatment consist of three replications . The results showed that spraying with seaweed extract (Acadian) at (2) g.L1, increase significant in the number of shoots(4.86)bud.plant-1 and leaves / Plant(11.30)leaves. plant-1 . with the highest content of total chlorophyll in the leaves (1.79) CCI , and highest number of Corms and Cormels (4.23 Corm. plant-1 , 3.03 Cormel. plant-1) respectively , highest of wet weight of the Corms and Cormels (5.13 , 2.25) g , respectively and the highest diameter of the Corms (3.27) cm . The two cultivar did not differ significantly in their studied characteristics. The Interactions between the spraying levels with seaweed extract (Acadian) and Cultivars had a significant effect on improving most of the studied traits , as it gave the treatment spraying with seaweed extract (Acadian) (2)g.L-1 and Cultivar (Pushal) increased of number of shoots(5.40) bud.plant-1 and leaves / Plant(12.20) leaves. plant-1. with the highest content of total chlorophyll (1.84)CCI , and highest number of Cormels (3.20) Cormel. plant-1 , highest of wet weight of the Cormels (2.28) g , while the cultivar (Bunch) was superior to the concentration of 2 g.L-1 in the highest number of Corms (4.33) Corm. plant-1 , highest of wet weight of the Corms (5.57) g , with the highest diameter of the Corms (3.29) cm "

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