scholarly journals Effect of Foliar Spray of Plant Growth Regulators on Growth and Quality of Sprouting Broccoli (Brassica oleracea var. italica L.)

2019 ◽  
Vol 8 (08) ◽  
pp. 1846-1852
Author(s):  
Pooja Chanwala ◽  
A.K. Soni ◽  
Deepika Sharma ◽  
Gulab Choudhary
Keyword(s):  
Plant Growth ◽  
Brassica Oleracea ◽  
Plant Growth Regulators ◽  
Growth Regulators ◽  
Foliar Spray

scholarly journals Ornamental Cabbage and Kale Growth Responses to Daminozide, Paclobutrazol, and Uniconazole

2001 ◽  
Vol 11 (2) ◽  
pp. 226-230 ◽  
Author(s):  
James L. Gibson ◽  
Brian E. Whipker
Keyword(s):  
Plant Growth ◽  
Brassica Oleracea ◽  
Plant Height ◽  
Plant Growth Regulators ◽  
Growth Regulators ◽  
Foliar Spray ◽  
Growth Responses ◽  
Height Control ◽  
Foliar Sprays ◽  
Industry Standard

Ornamental cabbage and kale (Brassica oleracea var. acephala) plants of cultivars Osaka White and Nagoya Red were treated with paclobutrazol and uniconazole as foliar sprays or substrate drenches. These treatments were compared to the industry standard of daminozide foliar sprays. Applying drenches of paclobutrazol (a.i.) at 4 mg/pot or uniconazole (a.i.) at 1 mg/pot (28,350 mg = 1.0 oz) resulted in 6% or 17%, respectively, shorter `Osaka White' plants while a 2 mg/pot paclobutrazol drench or a uniconazole drench at 0.25 mg/pot resulted in 25% shorter `Nagoya Red' plants. Although effective, the expense of substrate drenches for both plant growth regulators (PGRs) would not be economically feasible for growers to use. Paclobutrazol foliar sprays at concentrations of up to 80 mg·L-1 (ppm) were ineffective in controlling plant height and diameter of either `Osaka White' or `Nagoya Red'. A uniconazole foliar spray of 16 mg·L-1 resulted in 17% shorter `Nagoya Red' plants and 6% shorter `Osaka White' plants. A daminozide foliar spray of 2500 mg·L-1, sprayed twice, resulted in 21% shorter plants for both cultivars. Spraying daminozide would provide optimal height control for the retail grower. Although spraying daminozide twice controlled plant height and costs half the amount of an uniconazole spray at 16 mg·L-1, plant diameter was not affected with daminozide, therefore a wholesale grower who would desire a smaller diameter plant should use a uniconazole spray of 16 mg·L-1.

scholarly journals Crop and quality of garlic for application of plant growth regulators

2019 ◽  
Vol 94 (1) ◽  
pp. 186-198
Author(s):  
O. I. Ulyanych ◽  
◽  
I. A. Didenko ◽  
V. V. Yatsenko ◽  
◽  
...  
Keyword(s):  
Plant Growth ◽  
Plant Growth Regulators ◽  
Growth Regulators

scholarly journals Reduction of Ryegrass (Lolium multiflorum Lam.) Natural Re-Sowing with Herbicides and Plant Growth Regulators

Agronomy ◽  
2020 ◽  
Vol 10 (12) ◽  
pp. 1960
Author(s):  
Afonso Henrique Schaeffer ◽  
Otávio Augusto Schaeffer ◽  
Diógenes Cecchin Silveira ◽  
João Arthur Guareschi Bertol ◽  
Debora Kelli Rocha ◽  
...  
Keyword(s):  
Plant Growth ◽  
Plant Growth Regulators ◽  
Seed Production ◽  
Growth Regulators ◽  
Fruit Development ◽  
Lolium Multiflorum ◽  
Development Stage ◽  
Ammonium Glufosinate ◽  
Physiological Quality

Ryegrass (Lolium multiflorum Lam.) is the main winter weed of crops in Southern Brazil. High competitiveness, adaptability, widespread resistance to herbicides and seed dormancy make the plant a permanent problem. Herbicides, as well as plant growth regulators, can be used as a management option for ryegrass seed production, however there is no consensus among authors at which stage of the plant the application is most effective. Thus, this study aimed to evaluate the production and physiological quality of ryegrass seeds in response to the application of herbicides and plant growth regulators in three stages of plant development (inflorescence emergence, flowering and fruit development). Each treatment consisted of applying two different doses of each of the active ingredients: ammonium glufosinate, clethodim, glyphosate, iodosulfuron-methyl, paraquat and 2,4-D (herbicides); ethephon and trinexapac-ethyl (plant growth regulators), still an untreated control, totaling 17 treatments for each stage of development. The experimental design used was randomized blocks, with three replications. The variables evaluated were: seed production (kg ha−1), thousand seed weight (g), viability (%), germination (%), first germination count (%), dormant seeds (%) and dead seeds (%). The ryegrass seed production reduced 100% with clethodim, glyphosate, ammonium glufosinate or paraquat applied in the inflorescence emergence or flowering stages. In the fruit development stage, all treatments (herbicides and plant growth regulators) caused deleterious effects on seed production, the greatest effect occurred with paraquat (95%). Paraquat, ammonium glufosinate and clethodim affected the physiological quality of the seeds when applied in fruit development stage. This research demonstrated that the application of herbicides in the ryegrass reproductive stage decreases its seedbank replenishment (natural re-sowing), with the potential to harm its progeny.

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