Improving early growing stage of Festuca arundinacea Schreb. using media amendments under water stress conditions مقالة

مؤلف: Nematollahi، F ؛ Tehranifar، A ؛ Nemati، S.H ؛ Kazemi، F ؛ Ghazanchian، Gh.A ؛

DESERT Summer & Autumn 2018, Volume 23 - Number 2 (‎12 صفحة - من 295 إلی 306 )

الکلمات المفتاحية: irrigation Tall fescue Vermicompost Manure Municipal solid waste (MSW) Superabsorbent

خلاصة:

Developing strategies to tackle water stress in lawns in arid climate regions is significantly important. In such conditions, using growing media amendments as well as native plants can relieve drought stress in different growing stages of the plants. This study was carried out to investigate the effects of some types of soil amendments on the emergence and early seedling establishment of tall fescue (Festuca arundinecea Schreb ‘GazBorkhar ecotype’) under water stress conditions. The experiment was performed in a factorial trial based on a completely randomized design with three replications. The first factor, water stress, was applied based on field capacity (FC) at three levels (80% FC (control), 60% FC and 40% FC). The second factor, growing media amendments, was applied at nine levels of municipal solid waste (MSW), vermicompost (5% and 10% w/w), Stockosorb® (1% and 3% w/w) or zeolite superabsorbent (4% and 8% w/w) which were mixed with loam soil, and the loam soil was used as a control treatment. The results showed that using an irrigation system at 60% FC during seed emergence and early seedling growth did not reduce the quality of the turf grass, and also, in many cases, led to a higher quality lawn compared to the control, leading to water saving in turf grass management. Using MSW and manure vermicompost as soil amendments could maintain soil moisture and water supplement for the improvement of morphological, physiological and visual quality of this ecotype of Festuca arundinacea Schreb.

ملخص الجهاز:

The second factor, growing media amendments, was applied at nine levels of municipal solid waste (MSW), vermicompost (5% and 10% w/w), Stockosorb® (1% and 3% w/w) or zeolite superabsorbent (4% and 8% w/w) which were mixed with loam soil, and the loam soil was used as a control treatment. The results showed that using an irrigation system at 60% FC during seed emergence and early seedling growth did not reduce the quality of the turf grass, and also, in many cases, led to a higher quality lawn compared to the control, leading to water saving in turf grass management. One of the solutions to alleviate drought stress in different growth stages of plants is the addition of soil amendments to the growing media. Considering the above-mentioned points, it appears that a growing media which can enhance the water holding capacity and moisture content to a minimum level has better effects on maintaining the quality of plants. The main goal of this experiment is to study the effects of some types of soil amendments on the emergence and early seedling establishment and morphological and physiological characteristics of the native ecotype of tall fescue under water stress conditions. 3. Results According to Table 4, the interaction between irrigation levels and growing media types was significantly different on the soil moisture percentage, percentage of seed emergence, root volume, root length, electrolyte leakage, total chlorophyll content and carotenoids content. In mean of seed emergence time, the simple effect of irrigation levels and in traits height, root water content, shoot water content and relative water content simple effect of growing media types was significantly different (Table 4).

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