國立虎尾科技大學 |

Vermicompost application as a fertilizer source and substrate ammendment for seedlings and transplants : = Practical application and microbial activity analysis.

Record Type:	Language materials, manuscript : Monograph/item
Title/Author:	Vermicompost application as a fertilizer source and substrate ammendment for seedlings and transplants :/
Reminder of title:	Practical application and microbial activity analysis.
Author:	Brace, Stephanie Alexandra.
Description:	1 online resource (131 pages)
Notes:	Source: Dissertation Abstracts International, Volume: 78-06(E), Section: B.
Contained By:	Dissertation Abstracts International78-06B(E).
Subject:	Horticulture. -
Online resource:	click for full text (PQDT)
ISBN:	9781369561180

Vermicompost application as a fertilizer source and substrate ammendment for seedlings and transplants : = Practical application and microbial activity analysis.
Brace, Stephanie Alexandra.

Vermicompost application as a fertilizer source and substrate ammendment for seedlings and transplants :Practical application and microbial activity analysis. - 1 online resource (131 pages)

Source: Dissertation Abstracts International, Volume: 78-06(E), Section: B.

Thesis (Ph.D.)

Includes bibliographical references

Fertility management of seedlings/transplants can be difficult especially when they are grown in an organic production system. Transplants are grown in small containers with substrates that usually contain a low nutrient holding capacity. Organically supplied nutrients are primarily slow release and depend on biological processes to convert organically bound nutrients into a plant available form. Temperature influences both microbial activity and plant growth. Little information is currently available on the effect of vermicompost additions on microbial activity and subsequent plant performance in soilless substrates. Commercially produced vermicompost (VC) is a worm processed form of compost that can be used to provide fertility in organic systems. The source and method for producing VC are extremely variable. Therefore, the objective of this work was to test performance of seedlings/transplants in response to fertilizers, temperature, and sources of vermicompost. In addition, the microbial activity in vermicompost will be determined. Germination and transplant experiments were conducted using various quantities, sources and application methods of VC. Seeds of pepper 'Calwonder' (Capsicum annuum L.), tomato 'Rutgers 39' (Solanum lycopersicum L.), petunia 'Celebrity White F1' (Petunia x hybrid) and snapdragon 'Rocket Mix F1' (Antirrhinum majus L.) were included. Topdressing VC instead of incorporating led to higher fresh weight (FW) of tomato, pepper, petunia, and snapdragon. The source of VC had significant effect on plant growth of tomato and peppers in seedling and transplant stages. Vermicompost extract (VCE) applied at 5 applications per week was adequate to produce marketable seedlings of the four species above. A trial was conducted to compare the performance of several different granular organic fertilizers on 10 cm containers of 'Celebrity' tomato transplant growth at average daily temperatures of 10, 15, or 20 °C. The results indicate that the fertilizers perform well at 15 and 20 °C, but plant growth and nutrient availability was reduced at 10 °C. Results indicate that at 15 and 20°C Sustane, Verdanta, and Microstart can be substituted for conventional synthetic fertilizers for quality plant growth and decreased leaching. In another trial, VC, autoclaved VC and Sustane were applied in six combinations to determine if the microbial community in VC facilitated nitrogen mineralization. Plant growth and microbial parameters were measured at 2 week intervals for 6 weeks. By week 6, the FW of trts with VC or autoclaved vermicompost (AVC) applied performed better than the control. Very little difference in plant growth was found between VC or AVC treatments. Microbial activity measurements found that most of the activity of the microbes was concentrated in week 0 and 2. Respiration decreased in week 4 and then increased in week 6. The microbial activity was greatest in the first 2 weeks and coincided with the highest levels of N in the substrate and leachate.

Electronic reproduction.
Ann Arbor, Mich. :
ProQuest,
2018

Mode of access: World Wide Web

ISBN: 9781369561180Subjects--Topical Terms:

1058420
Horticulture.
Index Terms--Genre/Form:

554714
Electronic books.

Vermicompost application as a fertilizer source and substrate ammendment for seedlings and transplants : = Practical application and microbial activity analysis.
LDR:04390ntm a2200349Ki 4500 001 911517
005 20180529094435.5
006 m o u
007 cr mn||||a|a||
008 190606s2017 xx obm 000 0 eng d
020 $a 9781369561180
035 $a (MiAaPQ)AAI10254014
035 $a (MiAaPQ)cornellgrad:10167
035 $a AAI10254014
040 $a MiAaPQ $b eng $c MiAaPQ
099 $a TUL $f hyy $c available through World Wide Web
100 1 $a Brace, Stephanie Alexandra. $3 1183394
245 1 0 $a Vermicompost application as a fertilizer source and substrate ammendment for seedlings and transplants : $b Practical application and microbial activity analysis.
264 0 $c 2017
300 $a 1 online resource (131 pages)
336 $a text $b txt $2 rdacontent
337 $a computer $b c $2 rdamedia
338 $a online resource $b cr $2 rdacarrier
500 $a Source: Dissertation Abstracts International, Volume: 78-06(E), Section: B.
500 $a Adviser: Neil S. Mattson.
502 $a Thesis (Ph.D.) $c Cornell University $d 2017.
504 $a Includes bibliographical references
520 $a Fertility management of seedlings/transplants can be difficult especially when they are grown in an organic production system. Transplants are grown in small containers with substrates that usually contain a low nutrient holding capacity. Organically supplied nutrients are primarily slow release and depend on biological processes to convert organically bound nutrients into a plant available form. Temperature influences both microbial activity and plant growth. Little information is currently available on the effect of vermicompost additions on microbial activity and subsequent plant performance in soilless substrates. Commercially produced vermicompost (VC) is a worm processed form of compost that can be used to provide fertility in organic systems. The source and method for producing VC are extremely variable. Therefore, the objective of this work was to test performance of seedlings/transplants in response to fertilizers, temperature, and sources of vermicompost. In addition, the microbial activity in vermicompost will be determined. Germination and transplant experiments were conducted using various quantities, sources and application methods of VC. Seeds of pepper 'Calwonder' (Capsicum annuum L.), tomato 'Rutgers 39' (Solanum lycopersicum L.), petunia 'Celebrity White F1' (Petunia x hybrid) and snapdragon 'Rocket Mix F1' (Antirrhinum majus L.) were included. Topdressing VC instead of incorporating led to higher fresh weight (FW) of tomato, pepper, petunia, and snapdragon. The source of VC had significant effect on plant growth of tomato and peppers in seedling and transplant stages. Vermicompost extract (VCE) applied at 5 applications per week was adequate to produce marketable seedlings of the four species above. A trial was conducted to compare the performance of several different granular organic fertilizers on 10 cm containers of 'Celebrity' tomato transplant growth at average daily temperatures of 10, 15, or 20 °C. The results indicate that the fertilizers perform well at 15 and 20 °C, but plant growth and nutrient availability was reduced at 10 °C. Results indicate that at 15 and 20°C Sustane, Verdanta, and Microstart can be substituted for conventional synthetic fertilizers for quality plant growth and decreased leaching. In another trial, VC, autoclaved VC and Sustane were applied in six combinations to determine if the microbial community in VC facilitated nitrogen mineralization. Plant growth and microbial parameters were measured at 2 week intervals for 6 weeks. By week 6, the FW of trts with VC or autoclaved vermicompost (AVC) applied performed better than the control. Very little difference in plant growth was found between VC or AVC treatments. Microbial activity measurements found that most of the activity of the microbes was concentrated in week 0 and 2. Respiration decreased in week 4 and then increased in week 6. The microbial activity was greatest in the first 2 weeks and coincided with the highest levels of N in the substrate and leachate.
533 $a Electronic reproduction. $b Ann Arbor, Mich. : $c ProQuest, $d 2018
538 $a Mode of access: World Wide Web
650 4 $a Horticulture. $3 1058420
650 4 $a Plant sciences. $3 1179743
655 7 $a Electronic books. $2 local $3 554714
690 $a 0471
690 $a 0479
710 2 $a ProQuest Information and Learning Co. $3 1178819
710 2 $a Cornell University. $b Horticultural Biology. $3 1183395
773 0 $t Dissertation Abstracts International $g 78-06B(E).
856 4 0 $u http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=10254014 $z click for full text (PQDT)