Integrated effect of planting dates and irrigation regimes on morpho-physiological response, forage yield and quality, and water use efficiency of clitoria (<i>Clitoria ternatea</i> L.) in arid region

Mahfouz, H.; Megawer, Ekram A.; Maher, Aly; Shaaban, Ahmed

doi:10.1080/03650340.2019.1605165

Cited by 12 publications

(8 citation statements)

References 38 publications

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“…RWC results in the present study are in agreement with Mahfouz et al [63]. By comparing the mean values under hydric stress (32.5%) versus the non-stressed plants (85.3%); the difference account to a decrease of 63% on RWC.…”

Section: Relative Water Content (Rwc)supporting

confidence: 93%

“…By comparing the mean values under hydric stress (32.5%) versus the non-stressed plants (85.3%); the difference account to a decrease of 63% on RWC. It has been demonstrated that RWC in leaves decreases with increasing hydric stress [63]. A decrement in RWC is one of the first symptoms of water deficiency in leaves; thus, this is considered the most significant character when identifying differences among genotypes [64].…”

Section: Relative Water Content (Rwc)mentioning

confidence: 99%

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Identification of Sorghum (Sorghum bicolor (L.) Moench) Genotypes with Potential for Hydric and Heat Stress Tolerance in Northeastern Mexico

Galicia-Juárez

Závala-García

Sinagawa-García

et al. 2021

Plants

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Sorghum (Sorghum bicolor (L.) Moench) is cultivated in regions with frequent drought periods and high temperatures, conditions that have intensified in the last decades. One of the most important photosynthetic components, sensible to hydric stress, is maximum quantum yield for photosystem II (PSII, or Fv/Fm). The objective of the present study was to identify sorghum genotypes with tolerance to hydric and heat stress. The treatments were hydric status (hydric stress or non-hydric stress (irrigation)), the plant’s developmental stages (pre or post-anthesis), and six genotypes. The response variables were Fv/Fm; photosynthetic rate (PN); stomatal conductance (gs); transpiration rate (E); relative water content (RWC); damage to cell membrane (DCM) at temperatures of 40 and 45 °C; and agronomic variables. The experiment was conducted in pots in open sky in Marín, N.L., in the dry and hot northeast Mexico. The treatment design was a split–split plot design, with three factors. Hydric stress diminished the functioning of the photosynthetic apparatus by 63%, due to damage caused to PSII. Pre-anthesis was the most vulnerable stage to hydric stress as it decreased the weight of grains per panicle (85%), number of grains per panicle (69%), and weight of 100 grains (46%). Genotypes LER 1 and LER 2 were identified as tolerant to hydric stress, as they had lower damage to PSII; LER 1 and LEB 2 for their superior RWC; and LER 1 as a thermo tolerant genotype, due to its lower DCM at 45 °C. It was concluded that LER 1 could have the potential for both hydric and heat stress tolerance in the arid northeast Mexico.

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Section: Relative Water Content (Rwc)supporting

confidence: 93%

Section: Relative Water Content (Rwc)mentioning

confidence: 99%

Identification of Sorghum (Sorghum bicolor (L.) Moench) Genotypes with Potential for Hydric and Heat Stress Tolerance in Northeastern Mexico

Galicia-Juárez

Závala-García

Sinagawa-García

et al. 2021

Plants

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“…Greater soil moisture at the S1 and less soil disturbance sustained with rice stubbles could balance the soil moisture availability throughout the crop growth for a longer period of time, which is in line with a recent study under similar condition (Bandyopadhyay et al 2016). Therefore, it can be opined that early planting could be beneficial to diminish adverse effects of drought in arid or water-limited environments, likewise reported in a recent study (Mahfouz et al 2020).…”

Section: Soil Microenvironmentsupporting

confidence: 89%

“…Additionally, ZT enhanced nodulation and nitrogen fixation in legumes by conserving soil moisture and temperature and also increased soil microbial biomass (Torabian et al 2019). Early planting of lentil as a non-monetary practice can mitigate the adverse effects of drought, particularly under limited soil moisture content to upgrade the drought tolerance (Mahfouz et al 2020). Nevertheless, information on the relative contributions of tillage on soil moisture availability for lentil under different sowing times is rather scanty.…”

Section: Introductionmentioning

confidence: 99%

Understanding the Impacts of Sowing Time and Tillage in Optimizing the Micro-Environment for Rainfed Lentil (Lens culinaris Medik) Production in the Lower Indo-Gangetic Plain

Saha

Bandyopadhyay

Sarkar

et al. 2020

J Soil Sci Plant Nutr

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Low productivity of rainfed lentil (Lens culinaris Medik) in the post-harvest rice fallows due to soil moisture stress is a major concern in the lower Indo-Gangetic plains. We hypothesized that adjusting sowing dates with proper tillage can optimize the microenvironment for rainfed lentil allowing higher seed yield and improving soil biology. A 2-year field experiment was laid out following a split-plot design during 2014-2016 integrating three lentil sowing dates (early, S1; mid, S2; and late, S3) with two tillage practices (zero tillage, ZT, and conventional tillage, CT) in an Inceptisol of West Bengal, India. The objective was to examine various physiological (relative leaf water content (RLWC), leaf area index (LAI)) and biochemical (chlorophyll, carbohydrate, free amino acids, phenol, proline) changes in lentil, soil biology (soil microbial biomass carbon (SMBC), dehydrogenase activity (DHA)), and lentil yield attributes (grain yield, seed index). When sown early, S1, lentils produced~47% and 15% higher grain yield and~23% and 18% higher seed index over S3 and S2, respectively. Delayed sowing (S3) induced early maturity, severe moisture stress that resulted in lower RLWC (14%), LAI (49%), chlorophyll (37%), and carbohydrate (33%) content compared to S1. SMBC and DHA were significantly higher at S1, specifically under ZT, but had negative correlation with phenol, amino acids, and proline. Our experiment concludes that early sowing of lentil coupled with zero tillage can mitigate soil moisture stress in the relay-cropped, rainfed lentil and provide an optimum microenvironment to facilitate sustainable production of lentil in the region. Keywords Zero tillage. Relay crop. Soil moisture stress. Dehydrogenase activity. Soil microbial biomass carbon Abbreviations ZT Zero tillage CT Conventional tillage RLWC Relative leaf water content LAI Leaf area index TAW Total available water RAW Readily available water RZSM Root zone soil moisture SMBC Soil microbial biomass carbon DHA Dehydrogenase activity

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“…As an indispensable substance for crop growth, water not only promotes nutrient uptake and transport, but also directly affects a series of metabolic reactions in crops (Mahfouz, Megawer, & Maher, 2020; Zhang, Liu, Yu, Lu, & Ma, 2020). The total hay yield of alfalfa in the W 2 and W 3 treatments was significantly higher than that in the W 1 treatment under the same phosphorus application (Table 3).…”

Section: Discussionmentioning

confidence: 99%

Optimizing water and phosphorus management to improve hay yield and water‐ and phosphorus‐use efficiency in alfalfa under drip irrigation

Zhang

Liu

et al. 2020

Food Science & Nutrition

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Alfalfa (Medicago sativa L.) is an important forage legume in arid areas, but limited water resources and low fertilizer utilization have restricted its agricultural development. Meanwhile, studies on the effects of integrated water and phosphorus on production performance and water-use efficiency and phosphorus-use efficiency of alfalfa, especially on hay yield, phosphorus accumulation, and total phosphorus uptake are rarely reported under drip irrigation.The treatments were a factorial combination of three irrigation rates (5,250, 6,000, and 6,750 m 3 /ha per year) and four P rates (0, 50, 100, and 150 kg/ha per year) and consisted of 12 treatments for water and P management, arranged in a randomized complete block design with three replicates. Total hay yield and water-use efficiency and phosphorus-use efficiency of alfalfa in P 2 treatment were significantly greater than those in the P 1 and P 3 treatments (p < .05), and the total hay yield of alfalfa with phosphorus application increased by 7.43%-29.87% compared with that in the nonphosphorus (P 0 ) treatment under the same irrigation amount. The total phosphorus and available phosphorus concentrations in the 0-20 cm soil layer were greater than those in the 20-40 cm and 40-60 cm soil layers compared with those in the P 0 treatment. Correlation analyses showed that total hay yield was significantly positively correlated with total phosphorus uptake and wateruse efficiency (p < .01). The accumulated phosphorus concentration was significantly positively correlated with total phosphorus and available phosphorus concentration (p < .01) and was positively correlated with the phosphorus-use efficiency (p < .05). The membership function method was used to evaluate all the indicators, and the three treatments that had the greatest influence on the production performance of alfalfa were, in order, W 2 P 2 > W 3 P 2 > W 1 P 2 . Therefore, an irrigation rate of 6,000 m 3 /ha and a phosphorus application rate of 100 kg/ha per year should be considered as the best management for both high yield and water-use efficiency and phosphorus-use efficiency of alfalfa. K E Y W O R D Salfalfa, available phosphorus, drip irrigation, hay yield, total phosphorus, water-and phosphorus-use efficiency | 2407 ZHANG et Al.

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Integrated effect of planting dates and irrigation regimes on morpho-physiological response, forage yield and quality, and water use efficiency of clitoria (Clitoria ternatea L.) in arid region

Cited by 12 publications

References 38 publications

Identification of Sorghum (Sorghum bicolor (L.) Moench) Genotypes with Potential for Hydric and Heat Stress Tolerance in Northeastern Mexico

Identification of Sorghum (Sorghum bicolor (L.) Moench) Genotypes with Potential for Hydric and Heat Stress Tolerance in Northeastern Mexico

Understanding the Impacts of Sowing Time and Tillage in Optimizing the Micro-Environment for Rainfed Lentil (Lens culinaris Medik) Production in the Lower Indo-Gangetic Plain

Optimizing water and phosphorus management to improve hay yield and water‐ and phosphorus‐use efficiency in alfalfa under drip irrigation

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