Physiological and yield response of okra (Abelmoschus esculentus Moench.) to drought stress and organic mulching

2013 ◽  
Vol 15 (03) ◽  
pp. 187-190
Author(s):  
Anant Bahadur ◽  
Amit Kumar Singh ◽  
S.N.S. Chaurasia
Keyword(s):  
Drought Stress ◽  
Abelmoschus Esculentus ◽  
Yield Response

scholarly journals Impact of Drought Stress on the Accumulation of Capsaicinoids in Capsicum Cultivars with Different Initial Capsaicinoid Levels

HortScience ◽  
2012 ◽  
Vol 47 (9) ◽  
pp. 1204-1209 ◽  
Author(s):  
Paongpetch Phimchan ◽  
Suchila Techawongstien ◽  
Saksit Chanthai ◽  
Paul W. Bosland
Keyword(s):  
Drought Stress ◽  
Water Potential ◽  
Leaf Water Potential ◽  
Leaf Water ◽  
Growth And Yield ◽  
Yield Response ◽  
Hot Pepper ◽  
Environment Interaction ◽  
Relative Water ◽  
Drought Stress Condition

Capsaicinoids are the alkaloids in hot pepper that cause the sensation of heat when eaten and are affected by a genetic and environment interaction. Drought stress is well recognized as an environmental condition that influences capsaicinoid accumulation. This investigation identified the responses of capsaicinoid accumulation in hot pepper cultivars under drought stress condition. A total of nine cultivars with a different initial pungency level, i.e., low, medium, and high, was subjected to gradual drought stress during the flowering stage. Plants in this drought stress group were supplied with reduced water applications of 25%, 50%, and 75% by volume at 10, 20, and 30 days after flowering (DAF), respectively. Leaf water potential and relative water content were recorded to measure the level of drought stress. The results indicated that all cultivars were subjected to drought stress because of their decrease in leaf water potential and changes in physiological characteristics, e.g., growth and yield performance. In addition, leaf area and shoot-to-root ratio were good criteria for identifying hot pepper cultivars under drought stress because their responses were correlated with the stress level and yield components. Yield performances of the high pungency group did not decrease under drought stress, whereas those of the low pungency group did decrease. In conclusion, capsaicinoid levels increased for all cultivars studied when subjected to drought stress, except for the cultivars in the high pungency group. A yield response under drought stress for the medium pungency group varied and was not found to be associated with drought stress.

scholarly journals Sweet maize growth and yield response to organic and mineral fertilizers, N rates and soil water regimes

Agricultura ◽  
2015 ◽  
Vol 12 (1-2) ◽  
pp. 33-40 ◽  
Author(s):  
Franc Bavec ◽  
Martina Bavec ◽  
Silva Grobelnik Mlakar ◽  
Milojka Fekonja
Keyword(s):  
Drought Stress ◽  
Growth And Yield ◽  
Yield Response ◽  
Pig Manure ◽  
Mineral Fertilizers ◽  
Mineral N ◽  
Water Regimes ◽  
Maize Growth ◽  
Target Values ◽  
N Rates

Abstract Sweet maize is an underutilized vegetable in European temperate areas, and its consumption is increasing. For better understanding of cultivation practices, this pot experiment aimed to determine the eff­ects of diff­erent water regimes and nitrogen (N) rates calculated from N target values. N rates of 0 (control), 0.6 and 2 g N pot-1 were applied as organic by-products pumpkin cake and pig manure digestate, and mineral fertilizers CAN 27 and ENTEC®26. Treatments of water supply were based on measured soil matric potentials of 2.8 pF (drought stress), 2.6 pF (optimal water) and 2.4 pF (overwatered). In comparison to mineral fertilizers, pumpkin cake proved to be equal in eff­ectiveness in plant height (155.8 cm), cob (85.8 g), green (124.9 g) and leaf mass per plant (44.2 g), or even better in root (72.3 g) and broom mass per plant (3.0 g). Yield parameters, cob mass (70.1 g), its length (6.3 cm) and diameter (2.0 cm), as well as the residual mineral N (59 mg N kg-1) significantly increased at the highest N rate. Significantly lower values of the evaluated morphological parameters and photosynthetic rates (at brooming and harvesting) were associated with drought stress. The matric tension of 2.6 pF was established as an appropriate water regime for sweet maize growth.

Grain yield response of drought stressed wheat to foliar application of glycine betaine

2017 ◽  
Vol 51 (03) ◽  
Author(s):  
Neha Gupta ◽  
Sanjeev Kaur Thind
Keyword(s):  
Drought Stress ◽  
Glycine Betaine ◽  
Foliar Application ◽  
Stress Sensitivity ◽  
Yield Response ◽  
Specific Response ◽  
Optimum Level ◽  
Negative Effects ◽  
Wheat Genotypes ◽  
Effects Of Drought

A field experiment was conducted to investigate influence of exogenous application of glycine betaine (GB) on performance of wheat under prolonged drought conditions. A set of 19 wheat genotypes differing in stress sensitivity, were sprayed with 100mM GB at maximum tillering and anthesis stage. GB treatment significantly declined the phenological pace under drought stress by increasing days to anthesis. Foliar applied GB improved grains/ spike and thousand grain weight of selected wheat genotypes over stressed ones. The genotype specific response to GB application suggested some threshold optimum level to be necessary for yield improvement under drought stress in susceptible genotypes as compared with tolerant ones. In overall, GB alleviated negative effects of drought stress by a rise in harvest index of most genotypes suggesting its role in assimilate translocation.

scholarly journals Biorational Management of Flea Beetles. Podagrica spp. (Coleoptera: Chrysomelidae) and yield response of Okra (Abelmoschus esculentus) (L.) Moench.) In the Southern Guinea Savanna

2021 ◽  
Vol 4 (2) ◽  
pp. 1-12
Author(s):  
Kabeh J.D. ◽  
Balogun K.
Keyword(s):  
Fruit Yield ◽  
Abelmoschus Esculentus ◽  
Yield Response ◽  
Population Census ◽  
Sticky Traps ◽  
Yellow Colour ◽  
Guinea Savanna ◽  
Flea Beetles ◽  
Application Rates ◽  
Seed Application

This experiments conducted in 2019, to evaluate yield response of Okra (Abelmoschus esculentus, (L.) Moench) to attractiveness of colour sticky traps in relation to other population sampling methods and bio-pesticidal effects of Aqueous delonix seed extract on the flea beetles, Podagrica Spp. (Coleoptera: Chrysomelidae) in the Southern Guinea Savanna zone of Nigeria. Experimental design uses six coloured sticky traps as treatments in Randomized Complete Block Design (RCBD) and replicated three times. The design for efficacies of Bio-pesticides also in RCBD had four replications and five application rates, including a positive check and zero control as treatments. Yellow colour traps gave higher mean Podagrica Spp., catches but damage was higher in the white and purple traps, indicating other contributive factors affecting beetles feeding on Okra fruits. Higher precision was observed in hitting methods, when combined with colour reflectance. Yield of Okra fruits was optimum in all treatments, being higher in purple and least in white traps plants. Heavier fruits and least yield losses were in the least infected navy-blue treated plots. Agronomic performance was better in bio-pesticide treated Okra plants, but were not significant across different application rates with 57.30cm2 peak leave area at 20g/l, while mean fruit yield of 1007.00 was recorded at 15g/l Aqueous delonix seed application rate. Control had lowest mean fruit yield (780.00) with the highest fruits damage (11.33) per plot but heavier fruits recorded in the treated plants at 30g/l (66.75kg) over Cypermethrin (61.05kg). Pest population census showed significant (P < 0.05) decrease with increased application rates of the bio-pesticides. Hitting as sampling method was superior over sweep netting and was significantly different (P < 0.05) across the bio-pesticides application rates.

scholarly journals Growth and yield response of okra (Abelmoschus esculentus (L.) Moench) to fertilizer types and times of application in the southern guinea savanna agro-ecozone of Nigeria

2019 ◽  
Vol 64 (4) ◽  
pp. 353-366
Author(s):  
Kola Fasakin ◽  
Ade Afe ◽  
Nurat Saka
Keyword(s):  
Crop Production ◽  
Average Length ◽  
Block Design ◽  
Mineral Fertilizer ◽  
Fruit Yield ◽  
University Teaching ◽  
Abelmoschus Esculentus ◽  
Growth And Yield ◽  
Yield Response ◽  
Immature Fruit

A field study was carried out at the Kwara State University Teaching and Research Farm, Malete, to evaluate the response of vegetative growth and immature fruit yield of okra (Abelmoschus esculentus (L.) Moench) to three fertilizer types and three times of application. The fertilizer types, used at the rate of 60 kgN/ha, were Kwasu organic-based fertilizer type 2 (KOBF-2), Aleshinloye organo-mineral fertilizer grade A (AOMF-A), and inorganic NPK 15- 15-15 fertilizer (NPK), each applied at planting time, 2 weeks after planting (WAP), and 4 WAP. The trial was laid out in a 3 x 3 factorial arrangement in a randomized complete block design and replicated three times. All the data collected were subjected to analysis of variance, using the SAS statistical package, and the treatment means were separated using Duncan?s Multiple Range Test at 5% probability level. The result indicated no significant differences in plant height, number of leaves/plant, number of fruits/plant, and the average length of the fruits between fertilizer types and application times. However, there were significant differences in leaf area/plant at 6WAP and fruit yield. Irrespective of the times of application, KOBF-2 gave significantly higher immature fruit yield (2.84 t/ha) than NPK (1.93 t/ha) and AOMF-A (1.72 t/ha). The results thus suggest that the new organic-based fertilizer formulated in this study (KOBF) deserves incorporation into national fertilizer programs for sustainable crop production.

Plant traits and yield stability of dry bean (Phaseolus vulgaris) cultivars under drought stress

1991 ◽  
Vol 117 (2) ◽  
pp. 213-219 ◽  
Author(s):  
J. A. Acosta-Gallegos ◽  
M. W. Adams
Keyword(s):  
Drought Stress ◽  
Seed Yield ◽  
Plant Traits ◽  
Growth And Yield ◽  
Yield Response ◽  
Dry Bean ◽  
Physiological Maturity ◽  
Terminal Drought ◽  
Supplementary Irrigation ◽  
Terminal Drought Stress

SUMMARYThe objective of this study was to identify traits related to growth and yield response under drought stress in the field which would show less variation than yield itself. Experiments were conducted in 1987, at Durango, Mexico and at Michigan, USA. Twenty-six dry bean genotypes were sown under supplementary irrigation and terminal drought stress. Plant samples were taken at 50% flowering, mid-pod-filling and physiological maturity. At both sites, leaf expansion rate and crop growth rate at mid-pod-filling were greatly reduced by drought stress, resulting in significant reductions in total dry matter (DM) above ground and seed yield at physiological maturity. Because of differences in the timing and intensity of the drought stress, the yield components were affected differently at each location. Total DM content at physiological maturity, harvest index and number of pods/m2 were the only traits positively correlated with yield under stress at both locations. In order to evaluate a group of genotypes for adaptation to drought on the basis of seed yield, the genotypes should be grouped according to their phenological characteristics to stress them evenly.

scholarly journals Morphological and Yield Response of Pulses Against Drought Stress: A Review

2019 ◽  
Vol 7 (2) ◽  
pp. 202
Author(s):  
Aqsa Tahir ◽  
Masood Qadir ◽  
Rabia Saif ◽  
Saira Sattar ◽  
Sidra Tahir
Keyword(s):  
Water Stress ◽  
Drought Stress ◽  
Drought Resistance ◽  
Arid Regions ◽  
Water Shortage ◽  
Morphological Features ◽  
Previous Literature ◽  
Stress Conditions ◽  
Yield Response ◽  
Drought Condition

Pulses in Pakistan is used in combination with cereals to balance the diet. Its area and production is decreasing for last many years. In the barren and partly arid regions, water shortage is the major component that restricts yield. Using of drought resistance plant is one of the best ways for good cultivation under drought condition. As the pulses have great nutritional and economical values and drought stress affect their morphological features. The legume yield is mostly cultured in rain fed region of the Punjab where they bear a slighter quantity of water situation resulting in low yield of bean. To overcome these problems it is necessary to get knowledge about the performance of different lines of different pulses crops under water stress conditions. That’s why in this paper the information about the previous literature has been discussed.

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