03793nas a2200277 a 450000500170000000800410001703500150005810000290007324501010010226000670020330000430027049000270031350001430034050200580048352025820054165000320312365000300315565000130318565000170319870000330321570000450324870000410329371000570333481000590339185600650345020260818134412.0241003s20219999th a  ms tm   000   eng d  a.b124369380 aKanokkorn Piromsri      10aImpact of soil application of seaweed extract on the performance of tomato under drought stress   aPathum Thani, Thailand :bAsian Institute of Technology,c2021  a121 leaves :bill. +e1online resource1 aThesis ;vno. AS-21-02  aA Thesis submitted in partial fulfillment of the requirements for the degree of  Master of Science in Agricultural Systems and Engineering  aThesis (M. Sc.) - Asian Institute of Technology, 2021  aAt present, climate change has become the main issue around the world. It can threaten  food safety and various crops which are major food sources of the world{u2019}s living things.  Also, It can make many farmers face more challenges that can make farmers manage  crops more difficult. Drought is environmental stress and become widespread in many  areas; in addition, drought is the main threat to agricultural productivity. Tomato is an  essential vegetable and has the highest area under cultivation among vegetables of the  world. It was widely cultivated and consumed worldwide for its usefulness. However,  both vegetative and reproductive growth of tomato can be severely affected by drought  stress, such as inhibits seed development, reduces vegetative growth and compromises  reproduction. Seaweed extracts is biostimulant can enhance soil health by improving  moisture-holding capacity and by promoting other nutrients and the growth of  beneficial soil microbes. In this study, the independent pot experiment was conducted  to find out the best soil application of seaweed extract (Ascophyllum nodosum) on  growth, fruit yield, quality, physiological traits of tomato. Seaweed extract was applied  in five concentrations (0, 2.5, 5, 10, and 20 mL L-1 ) under three soil moisture regimes (100%, 75%, and 50% field capacity [FC]). Severe soil moisture stress at 50% FC  resulted in 67% decrease in fruit yield, 10% decrease in fruit length, 47% reduction in  the number of fruit plant-1 , 33% reduction in irrigaion water productivity compared with  100% FC. Soil application of seaweed extract at 5mL L-1 was effective at all soil  moisture levels. Soil application of seaweed extract at 5 mL L-1 resulted in 225% higher  fruit yield in comparison with no application of seaweed extract at 50% FC. Tomato  was a significant increase in growth and fruit yield when seaweed extract was applied  at 5 mL L-1 as a soil application. In addition, The beneficial effects of 5 mL L{u2013}1 seaweed  extract dose was also evident in fruit quality and physiological parameters of tomato.  The result of this study indicates that 5 mL L -1 could be regarded as an optimum  concentration of seaweed extract for tomato applied as a soil application. Thus, soil  application of seaweed extract at 5 mL L {u2212}1 is effective to improve plant growth, fruit  yield, fruit quality, physiological traits and imparting drought tolerance, moreover,  seaweed extracts are considered organic substances as they are environmentally benign  and safe for the health of animals and humans. 0aPlantsxEffect of stress on 0aPlantsxDrought tolerance 0aTomatoes 0aMarine algae1 aDatta, Avishek,eChairperson1 aZulfiqar, Farhad,eExamination Committee1 aUllah, Hayat,eExamination Committee2 aRoyal Thai Government Fellowship,eScholarship Donor2 aAsian Institute of Technology.tThesis ;vno. AS-21-02403Full-Textuhttp://203.159.5.9/ait-thesis/detail.php?q=B21679