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 Influence of gibberellic acid (GA₃) applied to the crop on growth, yield and tuber size distribution of seed potatoes.

1989 ◽  
Vol 37 (3) ◽  
pp. 185-196
Author(s):  
K.B.A. Bodlaender ◽  
M. van de Waart
Keyword(s):  
Stem Elongation ◽  
Growth Yield ◽  
Field Trials ◽  
Tuber Size ◽  
Growth And Yield ◽  
Tuber Initiation ◽  
Growth Stages ◽  
After Effects ◽  
Tuber Size Distribution ◽  
Different Growth Stages

In field trials in the Netherlands in 1982-86, seed potato cv. Jaerla (1982-86), Ostara, Spunta and Alpha (1986 only) crops were given 50 or 100 g GA3/ha foliar-applied at different growth stages. GA3 applied before the beginning of tuberization promoted stem elongation and stolon growth and slightly retarded tuber initiation. In general GA3 application (especially during stolon growth/onset of tuber initiation) increased the number of 28-45 mm sized tubers. The high GA3 rate produced long, curved tubers. Effects of GA3 differed slightly between cultivars. GA3 stimulated flowering especially with cv. Spunta. There were no negative after-effects of GA3 on growth and yield of progeny. (Abstract retrieved from CAB Abstracts by CABI’s permission)

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.

scholarly journals Review on Effects of Sowing Methods and Types of Inorganic Fertilizers on Growth Yield and Yield Component of TEFF [Eragrostis TEF (ZUCC.)

2021 ◽  
Vol 1 (3) ◽  
pp. 229-236
Author(s):  
Damte Balcha Gadana
Keyword(s):  
Soil Fertility ◽  
Yield Components ◽  
Growth Yield ◽  
Yield Component ◽  
Growth And Yield ◽  
Eragrostis Tef ◽  
Total Biomass ◽  
Inorganic Fertilizers ◽  
Biomass Yields ◽  
Planting Method

Most farmers’ practices broadcast sowing methods and productivity is less. Soil fertility maintenance is a major concern in tropical Africa which needs to tackle soil fertility depletion as a fundamental constraint. Similarly, the traditional way of planting tef reduces the amount of grain production, promotes competition for inputs, and causes severe lodging. This paper aimed to review the interaction effects between seed sowing methods and different types of inorganic fertilizers on the growth and yield of teff. In Ethiopia, recent research indicates planting method (row planting and broadcasting) affects the yield and yield components of teff. The review indicates the yield components include heading and maturity, plant height, first growth rate, number of tiller and panicle, thousand seed weight, grain, straw, and total biomass yields and harvest index high in Method of Row sowing compared to broadcast in Ethiopia but Days to emergence and panicle length were more affected by broadcasting. In economical acceptance, Row sowing was found to be economically acceptable with more income from grain yield than broadcasting.

scholarly journals Methionine-induced regulation of growth, secondary metabolites and oxidative defense system in sunflower (Helianthus annuus L.) plants subjected to water deficit stress

PLoS ONE ◽  
2021 ◽  
Vol 16 (12) ◽  
pp. e0259585
Author(s):  
Gull Mehak ◽  
Nudrat Aisha Akram ◽  
Muhammad Ashraf ◽  
Prashant Kaushik ◽  
Mohamed A. El-Sheikh ◽  
...  
Keyword(s):  
Drought Stress ◽  
Helianthus Annuus ◽  
Water Deficit ◽  
Soluble Sugars ◽  
Foliar Spray ◽  
Shoot Length ◽  
Stress Conditions ◽  
Growth And Yield ◽  
Water Deficit Stress ◽  
Growth Stages

Optimum water availability at different growth stages is one the major prerequisites of best growth and yield production of plants. Exogenous application of plant growth regulators considered effective for normal functioning of plants under water-deficit conditions. A study was conducted to examine the influence of exogenously applied L-methionine on sunflower (Helianthus annuus L.) plants grown under water-deficit conditions. Twenty-five-day old seedlings of four sunflower cultivars, FH331, FH572, FH652 and FH623 were exposed to control (100% F.C.) and drought stress (60% F.C.) conditions. After 30-day of drought stress, L-methionine (Met; 20 mg/L) was applied as a foliar spray to control and drought stressed plants. Water deficit stress significantly reduced shoot fresh and dry weights shoot and root lengths, and chlorophyll a content in all four cultivars. While a significant increase was observed due to water deficiency in relative membrane permeability (RMP), malondialdehyde (MDA), total soluble proteins (TSP), total soluble sugars (TSS), ascorbic acid (AsA) and activity of peroxidase (POD). Although, exogenously applied Met was effective in decreasing RMP, MDA and H2O2 contents, it increased the shoot fresh weight, shoot length, chlorophyll a, chlorophyll a/b ratio, proline contents and the activities of SOD, POD and CAT enzymes in all four cultivars under water deficit stress. No change in AsA and total phenolics was observed due to foliar-applied Met under water stress conditions. Of all sunflower cultivars, cv. FH-572 was the highest and cv. FH-652 the lowest of all four cultivars in shoot fresh and dry weights as well as shoot length under drought stress conditions. Overall, foliar applied L-methionine was effective in improving the drought stress tolerance of sunflower plants that was found to be positively associated with Met induced improved growth attributes and reduced RMP, MDA and H2O2 contents under water deficit conditions.

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 The Effect of Irrigation Intervals on the Growth and Yield of Quinoa Crop and Its Components

2017 ◽  
Vol 9 (9) ◽  
pp. 182
Author(s):  
Abdullah M. Algosaibi ◽  
Ayman E. Badran ◽  
Abdulrahman M. Almadini ◽  
Mohammed M. El-Garawany
Keyword(s):  
Irrigation Water ◽  
Harvest Index ◽  
Agronomic Traits ◽  
Block Design ◽  
Irrigation Management ◽  
Growth Yield ◽  
Moisture Stress ◽  
Growth And Yield ◽  
Growth Stages ◽  
Index Number

This experiment was conducted to study the effect of irrigation intervals on growth, yield and its components and some of the chemical characteristics of the soil after the harvest of quinoa (Chenopodium quinoa willd) plant. Three treatments were used as follow: T1 (twice irrigation every week, which is the common in the region), T2 (once irrigation every week) and T3 (twice irrigation every two weeks) using in a randomized complete block design with four replicates. The crop coefficient (Kc) value differed according to the stage of growth where the results showed that the T2 treatment gave the highest mean in all the studied traits followed by the T3 treatment in all traits except the number of seed/m2. The results also confirmed that the increase in water reduced the agronomic traits such as harvest index, number of seeds and yield of seeds and straw/m2. Also it showed that the pH values in soils were not significantly affected by irrigation, while Ec significantly affected. Correlation coefficient was negative with the most traits and low with the number of grain (0.34) under overall studied treatments which confirms that quinoa is a plant that needs limited amounts of irrigation water. On the other hand there was positive strong correlation between the harvest index and grain yield (0.92). The results showed that moisture stress treatments increased the concentration of the ionic, NH4-N and NO3-N significantly compared to soils which do not have moisture stress (T1, T2). We assume that the development based on Kc during growth-stages helps in irrigation management and provides precise water applications for quinoa plant. These results indicate that the water requirements of quinoa plant are limited and that quinoa plant growth is not affected by the lack of irrigation water on the crop and its qualities.

scholarly journals Foliar and soil fertilization effect on seed yield and protein content of soybean

2015 ◽  
Vol 17 (1) ◽  
pp. 67-72 ◽  
Author(s):  
MA Mannan
Keyword(s):  
Protein Content ◽  
Foliar Spray ◽  
Soybean Seed ◽  
Growth Yield ◽  
Growth And Yield ◽  
Growth Stages ◽  
Soybean Variety ◽  
Soil Fertilization ◽  
Fertilization Effect ◽  
Better Than

A field experiment was carried out at Agronomy Farm of Patuakhali Science and Technology University, Dumki, Patuakhali, from December 2011 to March 2012, to study the effects of nutrient foliar spray on soybean growth, yield and protein content. Soybean variety Shohag was used as the test crop. N, NPK, NPKS and NPKMg were sprayed and applied in the soil at vegetative and pod filling stages. Soil fertilizations were done as recommended dose, and no soil and foliar fertilization were considered as control. Plants were sprayed at the rate of 100 mg/L of water corresponding to each nutrient. The experimental design was a split plot with three replications. Result indicated that nutrient foliar spray, either singly or in combination, enhanced the growth and yield of the soybean as well as protein content in soybean seed, at the two growth stages compared to soil fertilization. However, spraying nutrients during pod filling stage was better than vegetative spraying stage in all characters studied. The highest amount of protein content in soybean seed and grain yield were obtained by spraying NPKMg.Bangladesh Agron. J. 2014, 17(1): 67-72

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