Cultivar × Management Interaction to Reduce Lodging and Improve Grain Yield of Irrigated Spring Wheat: Optimising Plant Growth Regulator Use, N Application Timing, Row Spacing and Sowing Date

AbstractThe success of dicamba-tolerant soybean [Glycine max(L.) Merr.] has revived concerns about plant growth regulator (PGR) herbicide exposure to conventional soybean. In laboratory studies, soybean root nodulation is inhibited by excess auxin, which is the mechanism of action of PGR herbicides. Soybean exposed to PGRs in a field environment may have a similar response, and if nodulation is compromised, nitrogen (N) fixation may be reduced, with subsequent seed yield or protein content decreases. Many soybean–N studies report minimal impact to soybean yield. However, if soybeans show foliar PGR injury symptoms, could N application compensate for a potential nodulation inhibition response? This study examined the response of non–PGR tolerant soybean to N after exposure to low doses of 2,4-D and dicamba applied once (at soybean growth stages V1, V3, and early reproduction [R1 or R2]) or twice (V1 + V3 or V3 + R). N was either foliar or soil applied at early (∼5 d after PGR application) or late (10 d after PGR application) timings. Nodulation and plant growth were evaluated at R3, and grain yield and seed protein and oil content were quantified at maturity. Plant biomass and nodulation were reduced by 10% with some PGR treatments, and early foliar N application after PGR injury resulted in reduction up to 25%. N applications to non–PGR treated soybean did not increase yield. Soybean treated with PGR at V1 or V3, with or without N, had yields similar to control treatments. However, yield reductions of up to 20% were observed when PGRs were applied at V5 or R stages or when double PGR applications were followed by early foliar N application. Seed protein and oil content were not affected by PGR or N treatment.

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Effect of nitrogen, phosphorous, potassium, plant growth regulator and artificial lodging on grain yield and grain quality of a landrace of barley

International Journal of Environment Agriculture and Biotechnology ◽

10.22161/ijeab/2.4.60 ◽

2017 ◽

Vol 2 (4) ◽

pp. 2020-2032

Author(s):

S.S.M. Shah ◽

X. Chang ◽

P. Martin

Keyword(s):

Plant Growth ◽

Grain Yield ◽

Growth Regulator ◽

Plant Growth Regulator ◽

Grain Quality

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A novel plant growth regulator improves the grain yield of high-density maize crops by reducing stalk lodging and promoting a compact plant type

Field Crops Research ◽

10.1016/j.fcr.2020.107982 ◽

2021 ◽

Vol 260 ◽

pp. 107982

Author(s):

Guanmin Huang ◽

Yingru Liu ◽

Yuling Guo ◽

Chuanxi Peng ◽

Weiming Tan ◽

...

Keyword(s):

Plant Growth ◽

Grain Yield ◽

Growth Regulator ◽

Plant Growth Regulator ◽

High Density ◽

Plant Type ◽

Stalk Lodging

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Improving maize grain yield by formulating plant growth regulator strategies in North China

Journal of Integrative Agriculture ◽

10.1016/s2095-3119(20)63453-0 ◽

2021 ◽

Vol 20 (2) ◽

pp. 622-632 ◽

Cited By ~ 1

Author(s):

Li-sha GONG ◽

Shu-jie QU ◽

Guan-min HUANG ◽

Yu-ling GUO ◽

Ming-cai ZHANG ◽

...

Keyword(s):

Plant Growth ◽

Grain Yield ◽

Growth Regulator ◽

Plant Growth Regulator ◽

North China ◽

Maize Grain Yield ◽

Maize Grain

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Формування деяких показників структури врожаю пшениці ярої за застосування гербіциду «Лінтур 70 WG, в.г.» і регулятора росту рослин «Емістим С»

Вісник Полтавської державної аграрної академії ◽

10.31210/visnyk2013.04.09 ◽

2013 ◽

pp. 37-40

Author(s):

А. В. Заболотна ◽

О. І. Заболотний

Keyword(s):

Plant Growth ◽

Spring Wheat ◽

Growth Regulator ◽

Plant Growth Regulator ◽

Water Soluble ◽

Yield Structure

Досліджено формування таких показників струк-тури врожаю пшениці ярої як кількість продуктив-них стебел, продуктивна кущистість, кількість і маса зерен із колоса за внесення гербіциду «Лінтур 70 WG, в.г.» у нормах 120, 150 і 180 г/га як окремо, так і у бакових сумішах із регулятором росту рослин «Емі-стим С». Встановлено, що застосування оптималь-них норм гербіциду сприяє покращанню цих показни-ків, а найвищі їх значення спостерігаються у разі сумісного внесення 120 г/га «Лінтуру 70 WG, в.г.» у баковій суміші з «Емістимом С». Внесення максима-льної норми гербіциду (180 г/га) як окремо, так і у суміші з «Емістимом С» має інгібуючу дію на росли-ни пшениці ярої, що проявляється у зниженні дослі-джуваних показників структури врожаю посівів культури. The formation of such indices of yield structure of spring wheat as the number of productive stems, productive layering, quantity and mass of grains in the ear under the application of herbicide Lintur 70 WG, at the rate of 120, 150 and 180g/ha both separately and in tank mixtures with plant growth regulator Emistim C was researched. It was established that the application of optimal herbicide rate improves these indices and their highest levels were achieved under the application of Lintur 70 WG, water soluble granules, in the tank mixture with Emistim C. The application of maximum herbicide rate (180 g/ha) both separately and in the mixture with Emistim C inhibits the growth of spring wheat plants which results in lower indices of the yield structure of the crop.

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

International Journal of Bio-resource and Stress Management ◽

10.23910/1.2020.2155 ◽

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.

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