كارايي مصرف آب، عملكرد و رشد گياه تربچه رقم Sparkler در شرايط كمبود رطوبت در خاك حاوي دو جاذب رطوبتي

Water used efficiency, yield and Radish growing in deficit soil moisture with two moisture absorbents

جاذب‌هاي رطوبتي با جذب و نگهداشت آب و آزادسازي تدريجي آن موجب رشد گياه و افزايش كارايي مصرف آب مي‌شوند. در اين پژوهش تأثير دو سطح 13/0 و 26/0 گرم هيدروژل آكوازورب و 13 و 26 گرم ورمي‌كمپوست و سه سطح 100، 75 و 50% رطوبت ظرفيت زراعي بر عملكرد و كارايي مصرف آب گياه تربچه به‌صورت فاكتوريل با طرح بلوك‌هاي كامل تصادفي بررسي شد. نتايج بيان‌گر برتري معني‌دار صفات ارتفاع اندام هوايي، وزن تر و خشك غده، طول غده، كارايي مصرف آب در رطوبت 75% بود. بيشترين كارايي مصرف آب غده و كارايي مصرف آب كل (غده+اندام هوايي) در ‌سطح 13 گرم ورمي‌كمپوست برابر 36/6 و 93/11 كيلوگرم بر مترمكعب بود. هم‌چنين در اين آزمايش بيشترين مقدار كارايي مصرف آب غده و كارايي مصرف آب كل از اثر متقابل رطوبت 75% در خاك حاوي 13 گرم ورمي‌كمپوست معادل 25/7 و 46/12 كيلوگرم بر مترمكعب به‌دست آمد

In this study, the effect of three levels of 100, 70 and 50 percent of FC, moisture as major factor and two levels of absorbent as secondary factor in three repeats during middle growing of radish was assessed. The analyzed results showed that the effect of moisture and absorbents on volum, size and weight of gland, water used efficiency and total water used efficiency (gland+ shoot) were significantly in level 0.01. The more shoot height, root length, leaf number, wet and dry weight were 12.97 cm, 14.49 cm, 7.67 leaves, 8.47 gr and 0.51 gr, respectively. The less water used efficiency and total water used efficiency belonged to moisture 100 %. The more values of gland weight, water used efficiency and total efficiency were 12.07 gt, 6.36 and 11.93 kg/m3 in 13 gr vermicompost. The interaction of moisture and absorbent for wet and dry factors were 14.16 and 0.62 gr, water used efficiency and total efficiency were 7.25 and 12.46 kg/m3 in 75% level moisture and 13 gr vermicompost In 42.6 % of cases, the peak gland weight and water used efficiency and total efficiency related to interaction 75% moistute and 13 gr vermicompost. In 42.6 % of cases, the results showed that the more values of some factores belonged to interaction of 100% moisture with minimum vermicompost (13 gr) with 75% of FC moisture and level 13 gr vermicompost have not significant difference. So, it can be concluded that in 85.2 % of cases the effect of 75% FC with 13 gr vermicompost was suitable.