Investigation of Characteristics of Hydrological Droughts in Indus Basin

Khattak, Muhammad Shahzad; Khan, Amjad; Khan, Muhammad Arslan; Ahmad, Waqas; Réhman, Shafiq Ur; Sharif, Mohammed; Ahmad, Sajjad

doi:10.17582/journal.sja/2019/35.1.48.56

Cited by 4 publications

(3 citation statements)

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“…Manganese correlated significantly and positively with soil organic carbon (r= 0.618*). Similar results were obtained by Khattak et al 69 and Chinchmalatpure et al 62 .…”

Section: Relationship Between Dtpa Extractable Zinc and Soil Propertisupporting

confidence: 91%

Vertical distribution of DTPAextractable micronutrients and its correlation with soil properties in selected soil profiles of Birbhum District of West Bengal

Mandal¹,

Mondal²,

Mukherjee³

et al. 2019

Science and Culture

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The present study was undertaken to assess the vertical distribution of DTPA-extractable micronutrients viz. zinc, copper, iron and manganese in relation to soil properties in five selected soil profiles, one each from Sainthia, Suri II, Rampurhat II, Md Bazar and Nalhati I block of Birbhum district of West Bengal. Collected soil samples were analysed for pH, electrical conductivity, organic carbon, textural class (% sand, silt, clay) and DTPA-extractable micronutrients using standard analytical methods. The soil texture varied from silt loam to silt. Based on the fertility ratings, pH of the profile soils was strongly acidic to neutral, showing increasing trend with depth. Its value ranged from 5.012-7.121. Electrical conductivity was found in normal range. Low to medium organic carbon content was found and its distribution was found decreasing with increasing depth. Iron, manganese and copper were estimated to occur above critical level, whereas low to medium available zinc was found. The available zinc, iron, manganese and copper contents in soils ranged from 0.264-1.618 mg/kg, 5.158-51.820 mg/kg, 1.788-20.720 mg/ kg and 0.324-3.364 mg/kg respectively. In general, all the micronutrients show decreasing trend with increase in depth. The pH of the collected soil samples showed significant and negative correlation with available iron (r=-0.603*) and manganese (r=-0.524*) whereas pH correlated nonsignificantly and negatively with available zinc (r=-0.343) and copper (r=-0.484). Soil organic carbon showed significant and positive correlation with all the micronutrients. Non-significant and negative correlation was found between electrical conductivity and available micronutrients except available iron which showed significant and negative correlation with electrical conductivity (r=-0.560*).

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“…Manganese correlated significantly and positively with soil organic carbon (r= 0.618*). Similar results were obtained by Khattak et al 69 and Chinchmalatpure et al 62 .…”

Section: Relationship Between Dtpa Extractable Zinc and Soil Propertisupporting

confidence: 91%

Vertical distribution of DTPAextractable micronutrients and its correlation with soil properties in selected soil profiles of Birbhum District of West Bengal

Mandal¹,

Mondal²,

Mukherjee³

et al. 2019

Science and Culture

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“…The maximum and minimum amounts of annual precipitation in the study area were 753.33 mm in 2015 and 344.39 mm in 2001, respectively. This large difference between the maximum and minimum amount of annual precipitation in the study area was due to the drought, which started in 1999 and ended in 2002 [56]. The annual precipitation exhibited a significantly (P < 0.05) increasing trend in the study area and its four sub-basins, i.e., the Kabul, Chenab, Jhelum and Upper Indus River basins.…”

Section: Trends In Annual Precipitation Seasonal Precipitation and Rainy Daysmentioning

confidence: 83%

Precipitation Variations under a Changing Climate from 1961–2015 in the Source Region of the Indus River

Rizwan

Jamal

et al. 2019

Water

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The source region of the Indus River (SRIR), which is located in the Hindukush, Karakoram and Himalayan (HKH) mountainous range and on the Third Pole (TP), is very sensitive to climate change, especially precipitation changes, because of its multifarious orography and fragile ecosystem. Climate changes in the SRIR also have important impacts on social and economic development, as well as on the ecosystems of the downstream irrigation areas in Pakistan. This paper investigates the changes in precipitation characteristics by dividing the daily precipitation rate into different classes, such as light (0–10 mm), moderate (10.1–25 mm) and heavy precipitation (>25 mm). Daily precipitation data from gauging and non-gauging stations from 1961–2015 are used. The results of the analysis of the annual precipitation and rainy day trends show significant (p < 0.05) increases and decreases, respectively, while light and heavy precipitation show significant decreasing and increasing trends, respectively. The analysis of the precipitation characteristics shows that light precipitation has the highest number of rainy days compared to moderate or heavy precipitation. The analysis of the seasonal precipitation trends shows that only 18 stations have significant increasing trends in winter precipitation, while 27 stations have significant increasing trends in summer precipitation. Both short and long droughts exhibit increasing trends, which indicates that the Indus Basin will suffer from water shortages for agriculture. The results of this study could help policymakers cope with floods and droughts and sustain eco-environmental resources in the study area.

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“…Guava (Psidium guajava L.) belongs to Myrtaceae family. It is grown in tropical and subtropical regions (Khattak et al, 1999). Guava originated mostly in America, Asia, and Australia and more recently in the European Mediterranean region.…”

Section: Introductionmentioning

confidence: 99%

In Vitro micropropagation using nodal segments from Germinated Seeds of Guava

Abd El-Khalek,

Elaidy,

Elfeky

et al. 2023

Journal of Sustainable Agricultural and Environmental Sciences

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A study to micro-propagate guava (Pisidium guajava) was carried out in 2020 and 2021 at the Tissue Culture Laboratory, Horticulture Department, Faculty of Agriculture, Tanta University. Nodal segments from in vitro germinated seeds of guava were used as explants. Nodal segments (from germinated seeds) were cultured on MS media supplemented with different concentrations of benzyl adenine (BA), kinetin (KIN), or thidiazuron (TDZ) (0, 1 and 2 mg/L). 2 mg/L BA was the most favorable treatment for multiplication of shoots (21.13 shoots/explant) compared to the other treatments and the control (plant growth regulators free medium). Shoots of suitable length were transferred to the rooting media containing (0, 0.5, or 1 mg/L) IBA. The medium containing 0.5 mg/L IBA gave the highest number of roots/plantlets and the longest roots. Under greenhouse for acclimatization, the plantlets of guava derived from the medium supplemented with 0.5 or 1 mg/L indole butyric acid recorded the highest survival percentage (80%). It can be concluded that added 2 mg/L of BA in the medium gave the highest number of shoots/explant during the multiplication stage of guava shoots. In addition, added 0.5 or 1 mg/L IBA during the rooting stage increased the number of roots/plantlets with recorded a highest survival percentage after five weeks of acclimatization stage.

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Investigation of Characteristics of Hydrological Droughts in Indus Basin

Cited by 4 publications

References 0 publications

Vertical distribution of DTPAextractable micronutrients and its correlation with soil properties in selected soil profiles of Birbhum District of West Bengal

Vertical distribution of DTPAextractable micronutrients and its correlation with soil properties in selected soil profiles of Birbhum District of West Bengal

Precipitation Variations under a Changing Climate from 1961–2015 in the Source Region of the Indus River

In Vitro micropropagation using nodal segments from Germinated Seeds of Guava

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