Integrated nutrient management to improve some soil characteristics and biomass production of saffron

Ghanbari, Jalal; Khajoei-Nejad, Gholamreza

doi:10.1016/j.indcrop.2021.113447

Cited by 10 publications

(6 citation statements)

References 37 publications

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“…In comparison with CK, T1 treatment significantly increased the pod N accumulation, and this was closely related to the higher pod weight under T1 treatment ( Figure 5 ). This results mainly because ventilation can significantly improve soil nutrient conditions by making nutrients readily available to plants and beneficial soil microbial [ 34 , 59 ]. Rhizosphere ventilation creates a good environment for the root system, and improves root growth and absorption.…”

Section: Discussionmentioning

confidence: 99%

Rhizosphere Ventilation Effects on Root Development and Bacterial Diversity of Peanut in Compacted Soil

Liang,

Yang,

et al. 2024

Plants

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Soil compaction is one of the crucial factors that restrains the root respiration, energy metabolism and growth of peanut (Arachis hypogaea L.) due to hypoxia, which can be alleviated by ventilation. We therefore carried out a pot experiment with three treatments: no ventilation control (CK), (2) ventilation volumes at 1.2 (T1), and 1.5 (T2) times of the standard ventilation volume (2.02 L/pot). Compared to no-ventilation in compacted soil, ventilation T1 significantly increased total root length, root surface area, root volume and tips at the peanut anthesis stage (62 days after sowing), while T2 showed a negative impact on the above-mentioned root morphological characteristics. At the podding stage (S2, 95 days after sowing), both ventilation treatments improved root morphology, especially under T1. Compared to CK, both ventilation T1 and T2 decreased the activities of enzymes involving the anaerobic respiration, including root lactate dehydrogenase, pyruvate decarboxylase and alcohol dehydrogenase. The activities of antioxidant enzymes of root superoxide dismutase, peroxidase and catalase also decreased at S1, while superoxide dismutase and peroxidase significantly increased under T1 at S2. The ventilation of compacted soil changed soil nitrogen-fixing bacterial communities, with highest bacterial alpha diversity indices under T1. The Pearson correlation analyses indicated a positive relationship between the relative abundance of Bradyrhizobiaceae and root activity, and between unclassified_family of Rhizobiales and the root surface area, while Enterobacteriaceae had a negative impact on the root nodule number. The Pearson correlation test showed that the root surface, tips and activity positively correlated with root superoxide dismutase and peroxidase activities. These results demonstrate that soil ventilation could enhance plant root growth, the diversity and function of soil nitrogen-fixing bacterial communities. The generated results from this present study could serve as important evidence in alleviating soil hypoxia caused by compaction.

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Section: Discussionmentioning

confidence: 99%

Rhizosphere Ventilation Effects on Root Development and Bacterial Diversity of Peanut in Compacted Soil

Liang,

Yang,

et al. 2024

Plants

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“…On the one hand, the use of a low N supply rate inhibits saffron growth and reduces the corm growth as well as stigma yield. On the other hand, excessive N supply rates can increase vegetative growth, delay maturation, increase disease susceptibility, reduce storage capability, and also lead to reduced flower and corm yield [29,30]. Saffron production in saline and semi-saline conditions complicates this equation: does nitrogen increase yield or suppress stigma yield by stimulating vegetative growth?…”

Section: Discussionmentioning

confidence: 99%

The Role of Nitrogen in Inducing Salt Stress Tolerance in Crocus sativus L.: Assessment Based on Plant Growth and Ions Distribution in Leaves

et al. 2022

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The role of nitrogen (N) in inducing salt stress tolerance in plants is not well understood, and the question is more complicated in saffron (Crocus sativus L.), which is sensitive to both nitrogen rates and salinity. The present study was conducted to investigate the effects of different N (0, 50 and 150 kg ha−1) supplies on saffron growth and ions concentration in shoots under several salt stress levels (0, 3, 6 and 9 dS m−1). Salinity negatively affected plant growth assessed by leaves number, leaves length, shoot dry weight, corms number and corms weight. Moreover, there was a clear direct correlation between higher salinity value and less plant growth. Different effects due to salinity and nitrogen were evident in terms of the number and length of leaves during the growing season from day 60 after first irrigation (DAF) and achieved a peak after 90 DAF. Salt stress also affected the ions balance, as Na+, Cl− and Ca2+ were enhanced and K+ was reduced, thereby damaging the plants. Nitrogen partially mitigated the negative impacts of salinity on plant growth and ions balance, although this compensatory effect was observed when nitrogen supply was set at 50 kg N ha−1. For example, in 2019–2020, the losses in shoot dry weight due to 9 dS m−1 salinity amounted to 47%, 44% and 54%, at 0, 50 and 100 kg N ha−1 respectively, thus indicating a less negative effect of salinity at 50 kg N ha−1. Moreover, at 100 kg N ha−1 the negative effect of salinity was stronger for six and nine dS m−1. Our findings suggested that the optimum N supply (50 kg N ha−1) strengthened the plant under non-saline and moderately saline (6 dS m−1) conditions, and consequently improved salt tolerance.

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“…The SEM results also confirmed soil O 2 content positively and directly affected fungal diversity under the mulching condition (Figure 6). Although mulching decreases soil O 2 content and alters the soil microenvironment, it can provide abundant substrate for soil microbial communities (Ghanbari & Khajoei‐Nejad, 2021), which attenuates the hypoxic inhibition effect. Furthermore, although increased aeration could improve soil nutrient availability, low levels of aeration (TA1) could decrease soil fungal species diversity and richness significantly, which may not facilitate the sustainable exploitation of bamboo soil ecosystem (Chaparro et al, 2012).…”

Section: Discussionmentioning

confidence: 99%

Can aeration improve bamboo soil fertility of soil below bamboo and fungal diversity under mulching conditions?

et al. 2022

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Aeration can alleviate soil hypoxia stress of Phyllostachys praecox bamboo under mulching conditions, but how aeration affects soil properties, soil fungal community structure, and bamboo development is unclear. We studied the responses of soil properties, fungal community structure, bamboo shoots, and rhizome growth to organic mulching (TM), mulching with aeration (TA1 and TA2), and no‐mulching treatments (CK) from a field experiment in March and July, 2019. During the mulching period (March), the aeration improvement treatment (TA2) improved soil O2 content, bamboo shoots yield, and soil nutrient availability significantly when compared with TM. TA2 treatment showed significantly higher relative abundances of the genus Trichoderma and functional group endophyte than TM treatment, which might be conducive to soil nutrient transformation and bamboo growth. The TA2 treatment had higher fungal diversity indices than that of the TA1 treatment, suggesting that optimal aeration conditions enhance soil fungal diversity. The fungal community structure also showed strong temporal dynamics in all treatments. Mantel test results indicated soil O2 is the primary factor driving fungal community structure under mulching conditions, while has no impact on the fungal community in summer; fungal community structure was primarily controlled by soil pH in summer. Structural equation model revealed soil NO3−‐N content was responsible directly for bamboo rhizome growth and shoot yield. Our results indicate short‐term mulching is beneficial to soil nutrients improvement and bamboo yield increase, while rational aeration can further facilitate sustainable plantation development under hypoxic soil conditions.

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Integrated nutrient management to improve some soil characteristics and biomass production of saffron

Cited by 10 publications

References 37 publications

Rhizosphere Ventilation Effects on Root Development and Bacterial Diversity of Peanut in Compacted Soil

Rhizosphere Ventilation Effects on Root Development and Bacterial Diversity of Peanut in Compacted Soil

The Role of Nitrogen in Inducing Salt Stress Tolerance in Crocus sativus L.: Assessment Based on Plant Growth and Ions Distribution in Leaves

Can aeration improve bamboo soil fertility of soil below bamboo and fungal diversity under mulching conditions?

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