الفهرس 
IntroductionOnly 14 pages are availabe for public view
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Abstract
Two field experiments were carried out throughout the two successive seasons of 2014-2015 under drip irrigation system at a private farm, in Shirbin, Dakahlia Governorate, Egypt, to investigate the role of mulching type (clear plastic mulch “CPM” and black plastic mulch “BPM”), biostimulants (seaweed extract “SWE”0.5 gm/ L and thiamine “THI” 0.1 gm/L), micronutrients (zinc “Zn” 0.1 gm/L and iron “Fe” 0.5 gm/L) and their interactions on tomato growth and yield. The most important results are summarized as follows: The highest values of tomato plant growth was recorded by application of SWE under CPM followed by BPM, the biostimulants application gave the best results compared with micronutrient except for a number of branches per plant that increased by application of Zn. The highest concentrations of total chlorophyll were obtained under the treatment of THI or Fe under CPM in the 1st season and THI or Zn under bare soil “BS” in the 2nd seasons. The highest N percentage in tomato shoot was recorded due to using BPM + SWE, meanwhile the highest P and K percentage in tomato shoot was obtained under the application of CPM with SWE. Application of SWE as a foliar application with CPM gave the highest value of fruit yield per plant and per feddan in the 1st season, meanwhile in the 2nd season the highest values were obtained due to application SWE with BPM. Application of SWE under CPM significantly increased total soluble solids in the two experimental season, application of Zn under BPM gave the highest values of fruit firmness, application of BPM (1st season) or CPM (2nd season) gave the highest ascorbic acid concentration as compared with the control and other treatments. High yield and its components, as well as high tomato quality characters and high net income, can be detected with using drip- or surface-irrigation under the application of seaweed extract 0.5 gm/L as a foliar application with clear or black plastic mulch.