نتایج جستجو برای: yield reduction
تعداد نتایج: 674328 فیلتر نتایج به سال:
The electron-cloud phenomenon is one cause of beam instabilities in high intensity positive particle accelerators. Among the proposed techniques to mitigate or control this detrimental effect, micro-/nano-geometrical modifications vacuum chamber surfaces are promising reduce number emitted secondary electrons. Femtosecond laser surface structuring readily allows fabrication Laser Induced Period...
in order to study the effects of post – anthesis heat stress on source of six wheat genotypes (vee/nac, chamran, s79-10, dez, fong and kaveer), two separate field experiments were conducted as delayed as against optimum sowing dates in ahvaz coditions. plants in delayed sowing date experienced heat stress at post-anthesis growth stage. as study of grain yield indicated that the highest and the ...
In order to study the effects of salt stress on yield and yield components, 21 rice genotypes, in a factorial experiment were conducted based on Randomized Complete Block Design with 3 replicates on pots in greenhouse at Sari Agricultural Science and Natural Resources, during 2009. Salt stress was applied on reproductive stage in rice at 3 levels 0, 6 and 10 ds m-1 NaCl. Results showed that t...
Drought stress is one of the major limiting factors of crop yield. A field experiment was conducted to study the effects of drought stress on yield and yield components of nine bread wheat and one durum wheat genotypes during 2003-2004 growing season. The experiment was designed as two separate randomized complete blocks design with three replicates under well-watered and unwatered conditions...
Drought stress is one of the major limiting factors of crop yield. A field experiment was conducted to study the effects of drought stress on yield and yield components of nine bread wheat and one durum wheat genotypes during 2003-2004 growing season. The experiment was designed as two separate randomized complete blocks design with three replicates under well-watered and unwatered conditions d...
A new bimetallic nanocomposite of chitosan was prepared. Pd and Co nanoparticles were deposited on chitosan to produce a new heterogeneous recyclable catalyst for use in the bimetallic catalytic reduction reaction. The catalyst was characterized with common analysis methods for nanocomposites including Energy Dispersive X-Ray Spectroscopy, X-Ray Diffraction pattern, Thermal Gravimetric Analysis...
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