東華大學圖書館 |

語系: 繁體中文

說明(常見問題)

回圖書館首頁

手機版館藏查詢

登入

回首頁

切換: 標籤 | MARC模式 | ISBD

Systematic Bimodal Analysis of Water...

Schulker, Brian Alan.

FindBook

Google Book

Amazon

博客來

Systematic Bimodal Analysis of Water Capture, Retention and Loss in Horticultural Soilless Substrates.

紀錄類型:	書目-電子資源 : Monograph/item
正題名/作者:	Systematic Bimodal Analysis of Water Capture, Retention and Loss in Horticultural Soilless Substrates./
作者:	Schulker, Brian Alan.
出版者:	Ann Arbor : ProQuest Dissertations & Theses, : 2023,
面頁冊數:	138 p.
附註:	Source: Dissertations Abstracts International, Volume: 85-05, Section: B.
Contained By:	Dissertations Abstracts International85-05B.
標題:	Wood. -
電子資源:	https://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=30673750
ISBN:	9798380714297

Systematic Bimodal Analysis of Water Capture, Retention and Loss in Horticultural Soilless Substrates.
Schulker, Brian Alan.

Systematic Bimodal Analysis of Water Capture, Retention and Loss in Horticultural Soilless Substrates. - Ann Arbor : ProQuest Dissertations & Theses, 2023 - 138 p.

Source: Dissertations Abstracts International, Volume: 85-05, Section: B.

Thesis (Ph.D.)--North Carolina State University, 2023.

This item must not be sold to any third party vendors.

Containerized production of horticultural crops can enhance plant health, growth, and yield compared to some field-grown crops while also practicing sound environmental production practices. However, the overall sustainability of soilless growing systems requires improved understanding of water and nutrient fluxes and storage within soilless substrates and informed decision making regarding their proper management. My research focused on substrate, both inherent and engineered, hydrologic dynamics of water capture, loss, and movement using a greenhouse load-cell based lysimeter system to understand real-time movement of water through gravimetric weight-based monitoring. We evaluated evaporative water loss of both traditional and alternative substrates as themselves, blended, with and without plants. We also assessed the influence of surface coverings (mulching) on evaporative water loss and post-production handling. From these experiments, through both lab-based and greenhouse testing, we derived results based on substrate, particle size and container cover mulch. Results showed that coconut coir consistently captured higher water contents at initial watering and retention over the multi-day evaporative testing. Through sieve analysis, we found that all materials retained higher water contents as particle size decreased, however this resulted in water loss rates at nearly 40% faster than larger particle sizes. In order to analyze the impact of substrate selection on post-production wilt, sunflowers were grown in peat-based blends of 20%, 40% and 60% wood fiber and 20% perlite. Sunflowers grown in 40% wood fiber had prolonged time to stage 3 wilt by as much as 30 h when compared to 20% perlite. Lastly, we built upon that data by using container coverings (mulches) to evaluate their impact on plant-water use efficiency. This translated to as high as a 50 hour delay in stage 3 wilt for wood chip covered marigolds compared to uncovered and ~25 h delay in rice hull coverings. Overall, plant water use efficiency (mLs of water per gram of plant material) was increased by introducing wood chip coverings to containers throughout production, decreasing the amount of water needed to produce quality crops by 58%. Through the results of this research, we can accurately design methodologies before, during, and post-production to reduce water inputs needed to produce container grown plants and increase survivorship of plants from greenhouse to garden center.

ISBN: 9798380714297Subjects--Topical Terms:

540142
Wood.

Systematic Bimodal Analysis of Water Capture, Retention and Loss in Horticultural Soilless Substrates.
LDR:03889nmm a2200445 4500 001 2393533
005 20240318062658.5
006 m o d
007 cr#unu||||||||
008 251215s2023 ||||||||||||||||| ||eng d
020 $a 9798380714297
035 $a (MiAaPQ)AAI30673750
035 $a (MiAaPQ)NCState_Univ18402041054
035 $a AAI30673750
040 $a MiAaPQ $c MiAaPQ
100 1 $a Schulker, Brian Alan. $3 3763001
245 1 0 $a Systematic Bimodal Analysis of Water Capture, Retention and Loss in Horticultural Soilless Substrates.
260 1 $a Ann Arbor : $b ProQuest Dissertations & Theses, $c 2023
300 $a 138 p.
500 $a Source: Dissertations Abstracts International, Volume: 85-05, Section: B.
500 $a Advisor: Kolar, Praveen S.;Heitman, Joshua L.;Fonteno, William C.;Owen, James S.;Michel, Jean-Charles;Jackson, Brian E.
502 $a Thesis (Ph.D.)--North Carolina State University, 2023.
506 $a This item must not be sold to any third party vendors.
520 $a Containerized production of horticultural crops can enhance plant health, growth, and yield compared to some field-grown crops while also practicing sound environmental production practices. However, the overall sustainability of soilless growing systems requires improved understanding of water and nutrient fluxes and storage within soilless substrates and informed decision making regarding their proper management. My research focused on substrate, both inherent and engineered, hydrologic dynamics of water capture, loss, and movement using a greenhouse load-cell based lysimeter system to understand real-time movement of water through gravimetric weight-based monitoring. We evaluated evaporative water loss of both traditional and alternative substrates as themselves, blended, with and without plants. We also assessed the influence of surface coverings (mulching) on evaporative water loss and post-production handling. From these experiments, through both lab-based and greenhouse testing, we derived results based on substrate, particle size and container cover mulch. Results showed that coconut coir consistently captured higher water contents at initial watering and retention over the multi-day evaporative testing. Through sieve analysis, we found that all materials retained higher water contents as particle size decreased, however this resulted in water loss rates at nearly 40% faster than larger particle sizes. In order to analyze the impact of substrate selection on post-production wilt, sunflowers were grown in peat-based blends of 20%, 40% and 60% wood fiber and 20% perlite. Sunflowers grown in 40% wood fiber had prolonged time to stage 3 wilt by as much as 30 h when compared to 20% perlite. Lastly, we built upon that data by using container coverings (mulches) to evaluate their impact on plant-water use efficiency. This translated to as high as a 50 hour delay in stage 3 wilt for wood chip covered marigolds compared to uncovered and ~25 h delay in rice hull coverings. Overall, plant water use efficiency (mLs of water per gram of plant material) was increased by introducing wood chip coverings to containers throughout production, decreasing the amount of water needed to produce quality crops by 58%. Through the results of this research, we can accurately design methodologies before, during, and post-production to reduce water inputs needed to produce container grown plants and increase survivorship of plants from greenhouse to garden center.
590 $a School code: 0155.
650 4 $a Wood. $3 540142
650 4 $a Leaves. $3 603951
650 4 $a Crops. $3 672677
650 4 $a Irrigation. $3 778786
650 4 $a Horticulture. $3 555447
650 4 $a Moisture content. $3 3564813
650 4 $a Nitrogen. $3 1314426
650 4 $a Porosity. $3 672598
650 4 $a Agriculture. $3 518588
650 4 $a Carbon sequestration. $3 601998
650 4 $a Mosses. $3 1899209
650 4 $a Environmental stewardship. $3 3564336
650 4 $a Sustainability. $3 1029978
650 4 $a Trees. $3 516384
650 4 $a Fruits. $3 3680926
650 4 $a Plant growth. $3 3540341
650 4 $a Physical properties. $3 3564184
650 4 $a Microorganisms. $3 666946
650 4 $a Hydraulics. $3 669758
650 4 $a Agronomy. $3 2122783
650 4 $a Environmental engineering. $3 548583
650 4 $a Forestry. $3 895157
650 4 $a Hydraulic engineering. $3 613609
650 4 $a Industrial engineering. $3 526216
650 4 $a Microbiology. $3 536250
650 4 $a Plant sciences. $3 3173832
650 4 $a Wood sciences. $3 3168288
690 $a 0473
690 $a 0471
690 $a 0640
690 $a 0285
690 $a 0775
690 $a 0478
690 $a 0218
690 $a 0546
690 $a 0410
690 $a 0479
690 $a 0746
710 2 $a North Carolina State University. $3 1018772
773 0 $t Dissertations Abstracts International $g 85-05B.
790 $a 0155
791 $a Ph.D.
792 $a 2023
793 $a English
856 4 0 $u https://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=30673750