ASSESSMENT OF DEFICIT IRRIGATION AND FOLIAR APPLICATION OF SALICYLIC ACID AND POTASSIUM SILICATE ON PERFORMANCE OF DRIP – IRRIGATED ONION CROP IN SANDY SOILS

AbstractIn Egypt, water shortage has become a key limiting factor for agriculture. Water-deficit stress causes different morphological, physiological, and biochemical impacts on plants. Two field experiments were carried out at Etay El-Baroud Station, El-Beheira Governorate, Agriculture Research Center (ARC), Egypt, to evaluate the effect of potassium silicate (K-silicate) of maize productivity and water use efficiency (WUE). A split-plot system in the four replications was used under three irrigation intervals during the 2017 and 2018 seasons. Whereas 10, 15, and 20 days irrigation intervals were allocated in main plots, while the three foliar application treatments of K-silicate (one spray at 40 days after sowing; two sprays at 40 and 60 days; and three sprays at 40, 60, and 80 days, and a control (water spray) were distributed in the subplots. All the treatments were distributed in 4 replicates. The results indicated that irrigation every 15 days gave the highest yield in both components and quality. The highly significant of (WUE) under irrigation every 20 days. Foliar spraying of K-silicate three times resulted in the highest yield. Even under water-deficit stress, irrigation every fifteen days combined with foliar application of K-silicate three times achieved the highest values of grain yield and its components. These results show that K-silicate treatment can increase WUE and produce high grain yield requiring less irrigation.

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Physiological Responses of Salinized Fenugreek (Trigonellafoenum-graecum L.) Plants to Foliar Application of Salicylic Acid

Plants ◽

10.3390/plants10040657 ◽

2021 ◽

Vol 10 (4) ◽

pp. 657

Author(s):

Reda E. Abdelhameed ◽

Arafat Abdel Hamed Abdel Latef ◽

Rania S. Shehata

Keyword(s):

Salicylic Acid ◽

Salt Stress ◽

Foliar Application ◽

Shikimic Acid ◽

Plant Tolerance ◽

Physiological Mechanisms ◽

Content Index ◽

Malondialdehyde Content ◽

Total Free Amino Acids ◽

The Impact

Considering the detrimental effects of salt stress on the physiological mechanisms of plants in terms of growth, development and productivity, intensive efforts are underway to improve plant tolerance to salinity. Hence, an experiment was conducted to assess the impact of the foliar application of salicylic acid (SA; 0.5 mM) on the physiological traits of fenugreek (Trigonellafoenum-graecum L.) plants grown under three salt concentrations (0, 75, and 150 mM NaCl). An increase in salt concentration generated a decrease in the chlorophyll content index (CCI); however, the foliar application of SA boosted the CCI. The malondialdehyde content increased in salt-stressed fenugreek plants, while a reduction in content was observed with SA. Likewise, SA application induced an accumulation of proline, total phenolics, and flavonoids. Moreover, further increases in total free amino acids and shikimic acid were observed with the foliar application of SA, in either control or salt-treated plants. Similar results were obtained for ascorbate peroxidase, peroxidase, polyphenol oxidase, and catalase with SA application. Hence, we concluded that the foliar application of SA ameliorates salinity, and it is a growth regulator that improves the tolerance of fenugreek plants under salt stress.

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Evaluation of changes in fatty acid profile, grain, and oil yield of Carthamus tinctorius L. in response to foliar application of polyamine compounds under deficit irrigation conditions

Industrial Crops and Products ◽

10.1016/j.indcrop.2020.113231 ◽

2021 ◽

Vol 161 ◽

pp. 113231

Author(s):

Kayvan Fathi Amirkhiz ◽

Majid Amini Dehaghi ◽

Seyed Ali Mohammad Modares Sanavy ◽

Alireza Rezazadeh

Keyword(s):

Fatty Acid ◽

Fatty Acid Profile ◽

Deficit Irrigation ◽

Foliar Application ◽

Carthamus Tinctorius ◽

Oil Yield

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Foliar application and seed priming of salicylic acid affect growth, fruit yield, and quality of grape tomato under drought stress

Scientia Horticulturae ◽

10.1016/j.scienta.2021.109904 ◽

2021 ◽

Vol 280 ◽

pp. 109904

Author(s):

Remi Chakma ◽

Arindam Biswas ◽

Pantamit Saekong ◽

Hayat Ullah ◽

Avishek Datta

Keyword(s):

Salicylic Acid ◽

Drought Stress ◽

Foliar Application ◽

Seed Priming ◽

Fruit Yield ◽

Yield And Quality

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Standardizing the Hydrogel Application Rates and Foliar Nutrition for Enhancing Yield of Lentil (Lens culinaris)

Processes ◽

10.3390/pr8040420 ◽

2020 ◽

Vol 8 (4) ◽

pp. 420 ◽

Cited By ~ 1

Author(s):

Shashidhar K. Shankarappa ◽

Samuel J. Muniyandi ◽

Ajay B. Chandrashekar ◽

Amit K. Singh ◽

Premaradhya Nagabhushanaradhya ◽

...

Keyword(s):

Salicylic Acid ◽

Seed Yield ◽

Lens Culinaris ◽

Foliar Application ◽

Winter Season ◽

Growth Period ◽

Growth And Yield ◽

Flower Initiation ◽

Foliar Nutrition ◽

Pod Development

Lentil (Lens culinaris) is an important winter season annual legume crop known for its highly valued seed in human and animal nutrition owing to its high lysine and tryptophan content. Shortage of water during the crop growth period has become the major impediment for cultivation of pulses in rice fallow in particular. Under such conditions, the application of hydrogel can be a potential alternative to improve photosynthetic efficiency, assimilate partitioning, and increase growth and yield. A field experiment was conducted from November to February during 2015–16 to 2017–18 on clay loam soil that was medium in fertility and acidic in reaction (pH 5.4) at Central Agricultural University, Imphal, Manipur. The experiment was laid out in split plot design with three replications. There were three hydrogel levels in total in the main plot and foliar nutrition with five different nutrient sprays in sub-plots, together comprising 15 treatment combinations. The data pooled over three years, 2015–2018, revealed that application of hydrogel at 5 kg/ha before sowing recorded a significantly greater number of pods per plant (38.0) and seed yield (1032.1 kg/ha) over the control. Foliar application of nutrients over flower initiation and pod development had a positive effect on increasing the number of pods per plant eventually enhanced the seed yield of lentil. Foliar application of either 0.5% NPK or salicylic acid 75 ppm spray at flower initiation and pod development stages recorded significantly more pods per plant over other nutrient treatments. Further, the yield attributed improved because of elevated growth in plant. Significantly maximum seed yield (956 kg/ha) recorded in the NPK spray of 0.5% remained on par with salicylic acid 75 ppm (939 kg/ha) over the rest of the treatments.

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The Effect of Salicylic Acid on the Performances of Salt Stressed Strawberry Plants, Enzymes Activity, and Salt Tolerance Index

Agronomy ◽

10.3390/agronomy11040775 ◽

2021 ◽

Vol 11 (4) ◽

pp. 775

Author(s):

Alaa El-Den Roshdy ◽

Abdullah Alebidi ◽

Khalid Almutairi ◽

Rashid Al-Obeed ◽

Ahmed Elsabagh

Keyword(s):

Salicylic Acid ◽

Foliar Application ◽

Growth Yield ◽

Tolerance Index ◽

Mean Values ◽

Enzymes Activity ◽

Salinity Response ◽

Negative Effect ◽

Positive Treatment ◽

Salt Tolerance Index

The influence of salicylic acid (SA) on growth, yield, fruits’ quality and enzymes’ activities was monitored in strawberry plants cv. Camarosa grown under salinity stress via two pot experiments in two successive years of 2018 and 2019. The examined concentrations of SA were 30, 60, and 90 ppm, which foliary applied in addition to control (sprayed with water), while the used levels of salinity were 20, and 40 mM as NaCl as irrigation application in addition to control (without salinity). The results showed a significant effect of salinity at 40 mM where the mean values of shoot fresh and dry weights, chlorophyll, leaves’ NPK, yield plant−1, yield ha−1, and fruits’ ascorbic acid were significantly decreased. However, the 40 mM salinity resulted in a significant increase in leaves’ content of Na and proline as well as catalase (CAT) and peroxidase (POD) enzymes’ activity and the fruits’ TSS and acidity. The application with 90 ppm SA was found to be the most significant positive treatment for all of the studied characters except the Na leaves’ content. Regarding tolerance index percentages (STI%), the high values of CAT, POD, and proline referred to the ability to use them as indicators for strawberry salinity response in other physiological and plant breeding studies. The findings of this study suggest that the 90 ppm SA foliar application can ameliorate the negative effect of salinity on the growth of strawberry cv. Camarosa.

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