scholarly journals Effect of Plant Growth Regulator-Flora on the Growth and Yield of Transplanted Aman Rice

2020 ◽  
Vol 11 (6) ◽  
pp. 542-547
Author(s):  
Nahid Hossain ◽  
◽  
Alok Kumar Paul ◽  
Ishrat Alam ◽  
Md. Omar Ali Mollick ◽  
...  
Keyword(s):  
Plant Growth ◽  
Grain Yield ◽  
Total Nitrogen ◽  
Growth Regulator ◽  
Plant Growth Regulator ◽  
Significant Variation ◽  
Chemical Fertilizer ◽  
Growth And Yield ◽  
Post Harvest

The experiment was conducted in the farm area of Sher-e-Bangla Agricultural University, Sher-e-Bangla Nagar, Dhaka during the period of July to November, 2015 to find out the effect of plant growth regulator-flora on the growth and yield of transplanted aman rice (BR 11-Mukta). The experiment comprised of 8 treatments as- T0: Control condition (No chemical fertilizer, no Flora), T1: Recommended Fertilizer Doses-RFD (120, 20, 80, 16 and 2 kg ha-1 of N, P, K, S and Zn, respectively), T2: RFD+1 time spray of Flora, T3: RFD+2 times spray of Flora, T4: ½ RFD+1 time spray of Flora, T5: ½ RFD+2 times spray of Flora, T6: No chemical fertilizer+1 time spray of Flora and T7: No chemical fertilizer+2 times spray of Flora. Data on different yield contributing characters, yield, and characteristics of post-harvest soil was recorded and significant variation was observed for different treatments. At harvest, the tallest plant (117.60 cm) was recorded from T3, while the shortest plant (88.85 cm) in T0 treatment. The highest number of filled grains panicle-1 (86.27) was recorded in T3, whereas the lowest number (68.53) in T0 treatment. The highest grain yield (5.13 t ha-1) was recorded in T3, while the lowest (2.78 t ha-1) in T0 treatment. The highest total nitrogen (0.632%) was recorded from T3, while the lowest (0.369%) in T0 treatment.

scholarly journals Performance of Sesame (Sesamum indicum L.) as Influenced by 2,4 – Dichlorophenoxyacetic Acid and NPK Fertilizer

2018 ◽  
Vol 51 (4) ◽  
pp. 60-72
Author(s):  
E.K. Eifediyi ◽  
F.O. Ogedegbe ◽  
N.B. Izuogu ◽  
C.A. Adedokun ◽  
A. Katibi ◽  
...  
Keyword(s):  
Plant Growth ◽  
Plant Height ◽  
Growth Regulator ◽  
Plant Growth Regulator ◽  
Growth And Yield ◽  
Dichlorophenoxyacetic Acid ◽  
Significant Difference ◽  
Npk Fertilizer ◽  
2,4 Dichlorophenoxyacetic Acid ◽  
Savannah Zone

Abstract The Guinea savannah zone of Nigeria is beset by increasing population and infrastructural development, thereby putting pressure on available land with rapidly declining fertility due to low organic matter content, soil erosion, high temperature and seasonal bush burning. Sesame is cultivated in this zone and the yield has remained very low, compared to yield in other parts of the world. This could be attributed to poor nutrient status and poor cultural practices used by peasant farmers. A field experiment was conducted at the Teaching and Research Farm, University of Ilorin, Nigeria, in a southern Guinea savannah zone in 2015 and repeated in 2016 cropping season to determine the effects of 2,4-Dichlorophenoxyacetic acid (2,4-D), a plant growth regulator and NPK fertilizer on the growth and yield of sesame. The experiment was laid out as a factorial arrangement, fitted into a randomized complete block design replicated thrice. The factors imposed were 2,4-D (0, 5 and 10 ppm ha−1) and NPK 15:15:15 (0, 100, 200 and 300 kg ha−1). Data were collected on vegetative traits (plant height, number of leaves, leaf area) and yield components (number of capsules per plant; yield per plant and per hectare). The data were subjected to analysis of variance (ANOVA) using the Genstat statistical package 17th edition and significant means were separated by using the least significant difference at 5% level of probability. The result revealed that using plant growth regulator and NPK fertilizer had significant effects (p<0.05) on plant height (151 cm) and yield per hectare (530 kg/ha). The qualitative and quantitative analysis of the seeds further reaffirmed the presence of bioactive compounds, such as saponins, tannins, flavonoids and phenolic compounds, which are important health promoting food in the seeds.

scholarly journals Plant Growth Regulator-Brassinolide for Mitigating Field Waterlogging Stress on Maize

2019 ◽  
pp. 1-14
Author(s):  
Victoria Otie ◽  
AN Ping ◽  
Ali Ibrahim ◽  
Egrinya Eneji
Keyword(s):  
Plant Growth ◽  
Growth Regulator ◽  
Plant Growth Regulator ◽  
Dry Matter ◽  
Block Design ◽  
Growth And Yield ◽  
Radiation Absorption ◽  
Waterlogging Stress ◽  
Maize Varieties ◽  
Maize Plants

Aim: To assess the pleiotropic role of a plant growth regulator, commercially identified as brassinolide (BR) in mitigating waterlogging stress imposed on maize. Study Design: A factorial combination of two maize varieties [Ikom White (IKW) and Oba-98], two BR levels (0 and 250 ml) and two waterlogging stages of maize growth [control (WL0) and seedling stage (WL1)], arranged as a split-split plot in a randomized complete block design with three replications was used. Place and Duration of Study: Akpabuyo Local Government Area, Cross River State-Nigeria. A two-year field experiment was conducted during the dry seasons of December 2016 and December 2017. Methodology: Waterlogging test was conducted on plots by demarcating them with 3.6 by 1.7 m metal sheets buried to a depth of 60 cm to prevent lateral soil-water movement. Two maize seeds were sown at 25 cm within and 75 cm between rows. The BR (250 ml) was sprayed foliar at 21 DAS. The non-waterlogging plots served as control. Observations were made on growth and yield variables as well as the plant's physiological traits. Results: Waterlogging significantly reduced the growth attributes of maize and increased (p≤0.05) the leaf moisture content. The photosynthetically active radiation on maize plants was substantially reduced (p≤0.05) by the waterlogging stress. Dry matter yield (DMY) and nutrient uptake in the leaves, stems and grains were reduced (p≤0.05) at both silking and at harvest. The effect of the BR was greater in Oba-98 with higher nutrient contents, radiation absorption, dry matter and grain yields than IKW. Conclusion: Treatment of maize plants with BR could induce some tolerance of field waterlogging. Thus, for optimum efficiency in maize production under stressed soil condition of waterlogging, it is recommended that the foliar spray of BR at the 250 ml per plant rate be considered.

scholarly journals An ABA Functional Analogue B2 Enhanced Salt Tolerance by Inducing the Root Elongation and Reducing Peroxidation Damage in Maize Seedlings

2021 ◽  
Vol 22 (23) ◽  
pp. 12986
Author(s):  
Shiying Geng ◽  
Zhaobin Ren ◽  
Lijun Liang ◽  
Yumei Zhang ◽  
Zhaohu Li ◽  
...  
Keyword(s):  
Salt Stress ◽  
Salt Tolerance ◽  
Plant Growth ◽  
Growth Regulator ◽  
Plant Growth Regulator ◽  
Growth And Yield ◽  
The Novel ◽  
Root Shoot Ratio ◽  
Maize Leaves ◽  
Hydroponic Conditions

Salt stress negatively affects maize growth and yield. Application of plant growth regulator is an effective way to improve crop salt tolerance, therefore reducing yield loss by salt stress. Here, we used a novel plant growth regulator B2, which is a functional analogue of ABA. With the aim to determine whether B2 alleviates salt stress on maize, we studied its function under hydroponic conditions. When the second leaf was fully developed, it was pretreated with 100 µM ABA, 0.01 µM B2, 0.1 µM B2, and 1 µM B2, independently. After 5 days treatment, NaCl was added into the nutrient solution for salt stress. Our results showed that B2 could enhance salt tolerance in maize, especially when the concentration was 1.0 µMol·L−1. Exogenous application of B2 significantly enhanced root growth, and the root/shoot ratio increased by 7.6% after 6 days treatment under salt stress. Compared with control, the ABA level also decreased by 31% after 6 days, which might have resulted in the root development. What is more, B2 maintained higher photosynthetic capacity in maize leaves under salt stress conditions and increased the activity of antioxidant enzymes and decreased the generation rate of reactive oxygen species by 16.48%. On the other hand, B2 can enhance its water absorption ability by increasing the expression of aquaporin genes ZmPIP1-1 and ZmPIP1-5. In conclusion, the novel plant growth regulator B2 can effectively improve the salt tolerance in maize.

THE EFFECT OF A SEAWEED EXTRACT CONTAINING CYTOKININ ON THE GROWTH AND YIELD OF BARLEY

1990 ◽  
Vol 70 (4) ◽  
pp. 1163-1167 ◽  
Author(s):  
J. S. TAYLOR ◽  
K. N. HARKER ◽  
J. M. ROBERTSON ◽  
K. R. FOSTER
Keyword(s):  
Hordeum Vulgare ◽  
Plant Growth ◽  
Growth Regulator ◽  
Plant Growth Regulator ◽  
Field Conditions ◽  
Seaweed Extract ◽  
Growth And Yield ◽  
Hordeum Vulgare L ◽  
Beneficial Effects ◽  
Seaweed Extracts

A cytokinin-containing seaweed extract, Nitrozyme™ (Nitrozyme1), was tested under field conditions over 4 yr for its effects on the growth and yield of barley (Hordeum vulgare L.). In 1986 and 1987, Nitrozyme did not increase yield and had no beneficial effects on growth of Harrington and Bonanza barley. In 1988 and 1989, the effects of Nitrozyme on barley (cv. Leduc) were compared against those of kinetin, a synthetic cytokinin. Neither Nitrozyme nor kinetin had an effect on growth or yield.Key words: Nitrozyme, seaweed extracts, cytokinins, kinetin, plant growth regulator, Hordeum vulgare L.

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