SOME GROWTH REGULATOR EFFECTS ON BERRY SET, YIELD AND QUALITY OF HIMROD AND DE CHAUNAC GRAPES

1975 ◽  
Vol 55 (1) ◽  
pp. 117-120 ◽  
Author(s):  
N. E. LOONEY
Keyword(s):  
Gibberellic Acid ◽  
Succinic Acid ◽  
Growth Regulator ◽  
Trimethylammonium Chloride ◽  
Yield And Quality ◽  
Berry Quality ◽  
Berry Set

Succinic acid-2,2-dimethylhydrazide (SADH) did not improve berry set of Himrod and de Chaunac grapes; (2-chloroethyl) trimethylammonium chloride (CCC) improved berry set of both cultivars but had deleterious effects on berry quality. Gibberellic acid (GA3), applied as a post-bloom spray, increased set and reduced acidity of Himrod grapes.

scholarly journals Urea-Doped Calcium Phosphate Nanoparticles as Sustainable Nitrogen Nanofertilizers for Viticulture: Implications on Yield and Quality of Pinot Gris Grapevines

Agronomy ◽  
2021 ◽  
Vol 11 (6) ◽  
pp. 1026
Author(s):  
Federica Gaiotti ◽  
Marco Lucchetta ◽  
Giacomo Rodegher ◽  
Daniel Lorenzoni ◽  
Edoardo Longo ◽  
...  
Keyword(s):  
Calcium Phosphate ◽  
Nitrogen Source ◽  
Foliar Application ◽  
N Fertilization ◽  
Plant Nitrogen ◽  
Yield And Quality ◽  
Berry Quality ◽  
Potential Benefits ◽  
Calcium Phosphate Nanoparticles

In recent years, the application of nanotechnology for the development of new “smart fertilizers” is regarded as one of the most promising solutions for boosting a more sustainable and modern grapevine cultivation. Despite showing interesting potential benefits over conventional fertilization practices, the use of nanofertilizers in viticulture is still underexplored. In this work, we investigated the effectiveness of non-toxic calcium phosphate nanoparticles (Ca3(PO4)2∙nH2O) doped with urea (U-ACP) as a nitrogen source for grapevine fertilization. Plant tests were performed for two years (2019–2020) on potted adult Pinot gris cv. vines grown under semi-controlled conditions. Four fertilization treatments were compared: N1: commercial granular fertilization (45 kg N ha−1); N2: U-ACP applied in fertigation (36 kg N ha−1); N3: foliar application of U-ACP (36 kg N ha−1); C: control, receiving no N fertilization. Plant nitrogen status (SPAD), yield parameters as well as those of berry quality were analyzed. Results here presented clearly show the capability of vine plants to recognize and use the nitrogen supplied with U-ACP nanoparticles either when applied foliarly or to the soil. Moreover, all of the quali–quantitative parameters measured in vine plants fed with nanoparticles were perfectly comparable to those of plants grown in conventional condition, despite the restrained dosage of nitrogen applied with the nanoparticles. Therefore, these results provide both clear evidence of the efficacy of U-ACP nanoparticles as a nitrogen source and the basis for the development of alternative nitrogen fertilization strategies, optimizing the dosage/benefit ratio and being particularly interesting in a context of a more sustainable and modern viticulture.

Effects of Growth Regulator Application on Growth, Flower, Oil Yield, and Quality of Clary Sage (Salvia sclareaL.)

2008 ◽  
Vol 14 (1-2) ◽  
pp. 29-36 ◽  
Author(s):  
Virendra Singh ◽  
Ruchi Sood ◽  
Kulasekaran Ramesh ◽  
Bikram Singh
Keyword(s):  
Growth Regulator ◽  
Oil Yield ◽  
Yield And Quality

Influence of GA and SADH on Naptalam Uptake by Wheat and Soybean Seedlings

Weed Science ◽  
1977 ◽  
Vol 25 (2) ◽  
pp. 142-144
Author(s):  
Robert M. Devlin ◽  
Stanislaw J. Karczmarczyk
Keyword(s):  
Glycine Max ◽  
Gibberellic Acid ◽  
Succinic Acid ◽  
Growth Regulator ◽  
Wheat Seedlings ◽  
Triticum Vulgare ◽  
Soybean Seedlings ◽  
Naphthylphthalamic Acid

The uptake of naptalam (N-1-naphthylphthalamic acid) by wheat (Triticum vulgareL. ‘Mericopa’) and soybean (Glycine max(L.) Merr. ‘York’) was enhanced when the herbicide was applied simultaneously with SADH (succinic acid-2,2-dimethylhydrazide). Both root and shoot systems of growth regulator-treated plants exhibited enhanced herbicide uptake. Naptalam uptake by wheat seedlings was also stimulated by GA (gibberellic acid), but the GA influence in this respect was less dramatic than that of SADH. The uptake of the herbicide by soybean was not influenced by GA.

Influence of gibberellic acid and N6-benzyladenine on the development of seed and shot berries in the seedless grape (Vitis vinifera L.) cv. Perlette

2005 ◽  
Vol 56 (5) ◽  
pp. 497
Author(s):  
K. Usha ◽  
D. Kashyap ◽  
B. Singh
Keyword(s):  
Gibberellic Acid ◽  
Fruit Set ◽  
Vitis Vinifera L ◽  
High Concentration ◽  
Full Bloom ◽  
Seed Formation ◽  
Table Grapes ◽  
Yield And Quality ◽  
Seedless Grape

Gibberellins have been used to improve quality of grapes in several cases. However, gibberellic acid (GA) alone is not enough to improve the quality in Perlette. A field experiment was conducted on 3-year-old grape cv. Perlette trained on pergolas, to investigate the effect of bunch dipping with GA3 and N6-benzyladenine (BA) on reducing the problem of shot berries and improving the productivity of grapevines. Our observations proved that the stage of application of GA3 and BA is crucial to avoiding seed formation in seedless varieties such as Perlette for table grapes. The results showed that BA at low (10 µL/L) or high concentration (30 µL/L) at 50% of full bloom caused seed development in the seedless grape cv. Perlette, whereas no seed was formed when BA was used later at the fruit set stage. Based on our studies, we found that bunch dipping with 30 µL/L GA3 (at 50% of full bloom) and 10µL/L BA (at pea size) significantly reduced the problem of shot berries, and improved the yield and quality in grape cv. Perlette.

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