Impact of foliar-applied Hoagland’s nutrient solution on growth and yield of mash bean (Vigna mungo L.) under different growth stages

2019 ◽  
Vol 42 (10) ◽  
pp. 1133-1141 ◽  
Author(s):  
Hasnain Waheed ◽  
Muhammad Mansoor Javaid ◽  
Adeel Shahid ◽  
Hafiz Haider Ali ◽  
Javaria Nargis ◽  
...  
Keyword(s):  
Nutrient Solution ◽  
Vigna Mungo ◽  
Growth And Yield ◽  
Growth Stages ◽  
Different Growth Stages

scholarly journals Quantitative Response of Maize Vcmax25 to Persistent Drought Stress at Different Growth Stages

Water ◽  
2021 ◽  
Vol 13 (14) ◽  
pp. 1971
Author(s):  
Xingyang Song ◽  
Guangsheng Zhou ◽  
Qijin He ◽  
Huailin Zhou
Keyword(s):  
Drought Stress ◽  
Early Warning Systems ◽  
Growth And Yield ◽  
Leaf Water Content ◽  
Growth Stages ◽  
Leaf Stage ◽  
Maximum Value ◽  
Maize Varieties ◽  
Persistent Drought ◽  
Different Growth Stages

Drought stress has adverse effects on crop growth and yield, and its identification and monitoring play vital roles in precision crop water management. Accurately evaluating the effect of drought stress on crop photosynthetic capacity can provide a basis for decisions related to crop drought stress identification and monitoring as well as drought stress resistance and avoidance. In this study, the effects of different degrees of persistent drought in different growth stages (3rd leaf stage, 7th leaf stage and jointing stage) on the maximum carboxylation rate at a reference temperature of 25 °C (Vcmax25) of the first fully expanded leaf and its relationship to the leaf water content (LWC) were studied in a field experiment from 2013 to 2015. The results indicated that the LWC decreased continuously as drought stress continued and that the LWC decreased faster in the treatment with more irrigation. Vcmax25 showed a decreasing trend as the drought progressed but had no clear relationship to the growth stage in which the persistent drought occurred. Vcmax25 showed a significantly parabolic relationship (R2 = 0.701, p < 0.001) with the LWC, but the different degrees of persistent drought stress occurring in different growth stages had no distinct effect on the LWC values when Vcmax25 reached its maximum value or zero. The findings of this study also suggested that the LWC was 82.5 ± 0.5% when Vcmax25 reached its maximum value (42.6 ± 3.6 μmol m−2 s−1) and 67.6 ± 1.2% (extreme drought) when Vcmax25 reached zero. These findings will help to improve crop drought management and will be an important reference for crop drought identification, classification and monitoring as well as for the development of drought monitoring and early warning systems for other crops or maize varieties.

Growth and yield of cowpea (Vigna unguiculata L.) cultivars under water Deficit at different growth stages

2017 ◽  
Author(s):  
Magdi A.A. Mousa ◽  
Adel D. Al Qurashi
Keyword(s):  
Water Deficit ◽  
Growth Yield ◽  
Yield Component ◽  
Growth And Yield ◽  
Vegetative Stage ◽  
Growth Stages ◽  
Cowpea Cultivars ◽  
Irrigation Water Use ◽  
King Abdulaziz University ◽  
Different Growth Stages

A field experiment was conducted in 2013 and 2014 at the Agriculture Experimental Station of King Abdulaziz University to study the effects of water deficit treatments at different growth stages on growth, yield and IWUE on cowpea cultivars. Four water deficit treatments were applied T0 (no water deficit), T1 (at vegetative stage), T2 (at flowering and pod setting), T3 (at pod filling), T4 (at vegetative and flowering) and T5 (at flowering and pod filling). The cultivars ‘Balady’ under water deficit T1, T3 and T4 and ‘Cream7’under T1 and T2 produced the highest yield component parameters except number of pods/plant. The highest yield of dry seeds kg/ha was produced by the cultivars ‘Cream7’ under water deficit T1 and T3 and ‘Balady’ under T2. ‘Cream7’ and ‘Balady’ revealed the highest irrigation water use efficiency (IWUE) under water deficit T1, T2 and T4. High seed yield of ‘Balady and ‘Cream7’ can be obtained by applying water deficit at vegetative stage (T1).

scholarly journals Effect of elevated atmospheric CO2 concentrations on growth and yield of blackgram (Vigna mungo L. Hepper) - a rainfed pulse crop

2008 ◽  
Vol 53 (No. 2) ◽  
pp. 81-88 ◽  
Author(s):  
M. Vanaja ◽  
P. Raghuram Reddy ◽  
N. Jyothi Lakshmi ◽  
M. Maheswari ◽  
P. Vagheera ◽  
...  
Keyword(s):  
Growth Parameters ◽  
Vigna Mungo ◽  
Growth And Yield ◽  
Growth Stages ◽  
Total Biomass ◽  
Initial Growth ◽  
Percentage Increase ◽  
Total Seed ◽  
Different Levels ◽  
100 Seed Weight

The response of blackgram (<i>Vigna mungo</i> L. Hepper) to two levels of elevated carbon dioxide (550 and 700 ppm) in terms of growth and yield was investigated and compared with ambient CO<sub>2</sub> level (365 ppm) using open-top chambers. The growth parameters viz., length and weight of root and shoot, root:shoot ratio, leaf area and weight significantly increased at 700 ppm CO2 when compared with 550 ppm. The percentage increase in total biomass at 700 and 550 ppm CO<sub>2</sub> was 65.4% and 39%, respectively compared to the ambient (chamber) control. The increase in total seed yield at 700 ppm (129%) was due to an increase in number of pods per plant and 100 seed weight, whereas at 550 ppm (88.7%) it was due to an increased number of pods/plant and seeds/pod. The results indicate variable responsive effects at different levels of CO<sub>2</sub> emphasizing the pertinence of research on elevated CO<sub>2</sub> in various agroecological inhabitations all over the world. The indication of higher responses for root and leaf at initial growth stages at the higher elevated level of CO<sub>2</sub> (700 ppm), which leads to better root establishment, achieving early photosynthetic efficiency and also better biomass production, and its improved partitioning can be reckoned as a positive aspect of increasing concentrations of CO<sub>2</sub> in atmosphere. The harvest index increased significantly to 35.7 and 38.4% at 550 and 700 ppm, respectively; it is a very important phenomenon in pulses for breaking the yield barrier.

scholarly journals Effects of different dosages and frequencies of fertigation on growth and yield of cucumber (Cucumis sativus L.) grown in soilless culture

2019 ◽  
Vol 18 (01) ◽  
pp. 44-53
Author(s):  
Nguyen H. Pham
Keyword(s):  
Nutrient Solution ◽  
Crop Yields ◽  
Culture Technique ◽  
Growth And Yield ◽  
Growth Stages ◽  
Soilless Culture ◽  
Cucumis Sativus L ◽  
Growing Media ◽  
Factors Affecting ◽  
Commercial Yield

Crop yield of cucumber cultivated by soilless culture technique is most likely affected by growing media and fertigation-frequency. Growing media and fertigation-frequency have become important factors affecting crop yields in the technique of soilless culture in general and cucumber in particular. The objective of this study was to determine the appropriate dosages and frequencies of fertigation for growth, development and yield of cucumber grown in the soilless culture under plastic house conditions in Ho Chi Minh City. The experiment was conducted in strip-plot design with three replicates; the vertical factor (A) including three different dosages of nutrient solution was applied variously based on plant growth stages (A1: combination of 226, 280 and 236 mL/plant/ day applied in three different periods from 0 to 3, 3 to 5 and after 5 weeks of planting, respectively; A2: 339, 420 and 359 mL/plant/day; and A3: 452, 560 and 472 mL/plant/day). The horizontal factor (B) was four different fertigation frequencies of 2, 3, 4 and 5 times/day. The results showed that cucumber fertigated with the nutrient solution having concentration of 452 mL/plant/day (from 0 to 3 weeks), 560 mL/plant (from 3 to 5 weeks) and 472 mL/plant (after 5 weeks) in combination with the fertigation frequency of 5 times/day had the best plant height (333.5 cm), number of leaves per plant (40.9 leaves/plant), the highest absolute yield (12.65 kg/m2), and commercial yield 12.52 kg/m2, and this fertigation regime also resulted in the highest profit (64,275,400 VND/1000 m2) and return on investment (1.07).

Growth And Yield Response Of Maize To Nitrogen Application at Different Growth Stages

1999 ◽  
Vol 2 (4) ◽  
pp. 1623-1625 ◽  
Author(s):  
Muhammad Maqsood ◽  
Shakeel Ahmad ◽  
Aamir Ahmad ◽  
M. Irshad
Keyword(s):  
Growth And Yield ◽  
Yield Response ◽  
Growth Stages ◽  
Nitrogen Application ◽  
Different Growth Stages

scholarly journals Silicon Improves Maize Photosynthesis in Saline-Alkaline Soils

2015 ◽  
Vol 2015 ◽  
pp. 1-6 ◽  
Author(s):  
Zhiming Xie ◽  
Ri Song ◽  
Hongbo Shao ◽  
Fengbin Song ◽  
Hongwen Xu ◽  
...  
Keyword(s):  
Photosynthetic Efficiency ◽  
Optimal Dose ◽  
Growth And Yield ◽  
Growth Stages ◽  
Alkaline Stress ◽  
Alkaline Soil ◽  
Alkaline Soils ◽  
Saline Alkaline Soils ◽  
Different Growth Stages ◽  
Maize Photosynthesis

The research aimed to determine the effects of Si application on photosynthetic characteristics of maize on saline-alkaline soil, including photosynthetic rate (Pn), stomatal conductance (gs), transpiration rate (E), and intercellular CO2concentration (Ci) of maize in the field with five levels (0, 45, 90, 150, and 225 kg·ha−1) of Si supplying. Experimental results showed that the values ofPn,gs, andCiof maize were significantly enhanced while the values ofEof maize were dramatically decreased by certain doses of silicon fertilizers, which meant that Si application with proper doses significantly increased photosynthetic efficiency of maize in different growth stages under stressing environment of saline-alkaline soil. The optimal dose of Si application in this experiment was 150 kg·ha−1 Si. It indicated that increase in maize photosynthesis under saline-alkaline stress took place by Si application with proper doses, which is helpful to improve growth and yield of maize.

scholarly journals Improvement of Salt Tolerance in Maize by Exogenous Application of Proline

2015 ◽  
Vol 8 (1) ◽  
pp. 13-18 ◽  
Author(s):  
MI Hasan ◽  
MG Kibria ◽  
M Jahiruddin ◽  
Y Murata ◽  
MA Hoque
Keyword(s):  
Nutrient Uptake ◽  
Antioxidant Defense ◽  
Growth Parameters ◽  
Growth And Yield ◽  
Growth Stages ◽  
Total N ◽  
Exogenous Application ◽  
S Uptake ◽  
Maize Plants ◽  
Different Growth Stages

Proline provides protection in plants against various abiotic stresses including salinity. The field experiment was conducted at the farmer’s field of coastal area (Botiaghata, Khulna) to mitigate the adverse effects of salinity on growth and yield of maize by exogenous application of proline. In the experiment maize plants were treated with different concentrations of proline at seedling and/or vegetative stages. The plant growth parameters, grain and stover yields, nutrient uptake and K+/Na+ ratio were recorded. All the yield contributing characters were significantly increased due to exogenous application of proline at different growth stages. Among the treatments, application of 100 mM proline at seedling and vegetative stages offered the highest grain and stover yields (5.7 t ha-1 and 9.8 t ha-1, respectively) of maize which was followed by 100 mM proline application at seedling stage where grain and stover yields were 5.7 t ha-1 and 9.7 t/ha, respectively. However no significant differences were found between two treatments. Total N, P and S uptake (203.66, 23.24 and 23.14 kg ha-1, respectively) were highest when the maize plants were treated with 100 mM proline at seedling and vegetative stages. The highest K+/Na+ ratio both in grain (12.92) and stover (5.57) was also observed in the same treatment. Therefore, it can be concluded that exogenous application of proline improves salinity tolerance in maize by increasing nutrient uptake and probably due to increasing antioxidant defense mechanisms.J. Environ. Sci. & Natural Resources, 8(1): 13-18 2015

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