Effect of Spraying Some Organic, Amino Acids and Potassium Citrate on Alleviation of Drought Stress in Cotton Plant

Abstract

Two field experiments were carried out to investigate effects of spraying organic acids and amino acids and combinations between organic acid and potassium citrate or amino acid and potassium citrate under drought stress. The objectives of these studies were aimed to investigate the effect of organic and amino acids application and potassium citrate on plant growth characters, yield and yield components, leaf chemical constituents, enzyme activity as well as seed quality and fiber properties of Giza 86 cotton cultivar. The experiments were conducted at Sakha Agricultural Research station, during 2009 and 2010 seasons.Plant irrigation was carried out regularly at plant needs using tap water up to the start of flowering stage then, some of plants subjected to drought conditions by preventing water supply till the appearance of sign of wilting and spraying with organic acids or amino acids and potassium citrate, leaving the control plants without treatments.Drought conditions significantly decreased plant height, number of fruiting branches, chloroplast pigments i.e., chlorophyll a, b, a + b, carotein and catalase activity in cotton leaves, while the contrary was obtained in proline content in leaf and peroxidase activity in comparison with the control. Also, reduction in yield and yield components was observed as results of water stress.The results clearly showed that spraying cotton plants with organic acid, amino acid and combinations between them and potassium citrate under drought conditions tended to increase growth parameters i.e., plant height, number of fruiting branches, number of open bolls per plant, seed index, boll weight, lint percentage, seed cotton yield per feddan and some chemical content in cotton leaves i.e., chlorophyll a, b, total chlorophyll and carotein, proline and antioxidant enzyme activities.On the other hand, no significant effects with application of organic and amino acids on fiber properties.

Exogenous citric acid enhances drought tolerance in tobacco (Nicotiana tabacum)

“…The endogenous citric acid level is massively increased in tomato, Gossypium hirsutum, Clusia sp. and Aptenia cordifolia, but less so in Solanum tuberosum (potato) under drought (Darandeh & Hadavi, 2011;El-Tohamy et al 2013;Gebaly et al 2013). In addition, exogenous citric acid promotes drought tolerance in Lilium cv.…”

“…2013; Gebaly et al . 2013). In addition, exogenous citric acid promotes drought tolerance in Lilium cv.…”

Impact of different Irrigation Levels and Foliar Spraying with some Potassium Forms on Growth and Productivity of Garlic (Allium sativum L.) تأثیر مستویات الری المختلفة والرش الورقی ببعض صور البوتاسیوم على نمو وإنتاجیة الثوم

“…In most cases, water relations of garlic plant as well as leaves pigments were gradually decreased under any potassium form when interacted with 100%, 75% then 50% irrigation levels, respectively. Gebaly et al (2013) indicate that spraying cotton plants with potassium citrate under drought conditions tended to increase cotton leaves chemical content i.e., chlorophyll a, b and carotene contents. In the same line, Behairy et al (2015) pointed out that foliar application with potassium thiosulfate on onion plants enhancement growth characters.…”

“…Irrigated crop production is substantial for world food security in order that it participates around 40% to the total food supply for the complete global (Garces-Restrepoet al, 2007).The incoming water lack caused by climate changes, although it is actually not fully known by the Egyptian agro-public, is a true challenge meeting agricultural evolution and crop production in special (Gebaly et al, 2013).Down such urgent threat of water restriction, irrigation water should be efficiently used so that water economies could be utilized in other activities for agricultural. Moreover, Costa et al (2007) indicated that deficit irrigation water, a practice that deliberately lets crops as vegetables plants to tolerate some degree of water deficit with minor yield loss, has the possibility to increase water utilize efficiency and save water.…”

The Changes in Yield Response Factor, Water Use Efficiency, and Physiology of Sunflower Owing to Ascorbic and Citric Acids Application Under Mild Deficit Irrigation

“…Inside the plant cell, citric acid plays an important role in the intermediary metabolism, being a component of the tricarboxylic acid cycle or Krebs cycle (Omar et al 2018). In some plant species as cotton (Gebaly et al 2013) and bean (El-Tohamy et al 2013), CA ameliorated the adverse effect of drought.…”