Emergence response of the pepper at low soil temperature

Gerson, Robert; Honma, S.

doi:10.1007/bf00039130

Cited by 29 publications

(18 citation statements)

References 4 publications

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“…Germinated seeds were counted starting from the fourth to tenth days after seeding (DAS). The percentage emergence and mean days to emergence (MDE) were calculated as described by Gerson and Honma (1978). The young transplants were continuously irrigated with tap water until most of them were showing second true leaves after which they were thinned to one plant per plug.…”

Section: Greenhouse Experimentsmentioning

confidence: 99%

Effects of co-composting of faecal sludge and agricultural wastes on tomato transplant and growth

Nartey

Amoah

Ofosu-Budu

et al. 2017

Int J Recycl Org Waste Agricult

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Purpose Faecal sludge (FS) has been co-composted with many organic solid wastes globally. Agricultural wastes, such as oil palm empty fruit bunches (EFB) and cocoa pod husks (CPH), have received very little research attention as far as combining with FS is concerned. This study aimed at co-composting these wastes at different ratios to produce safe compost for use as soilless medium for raising tomato transplants. Methods Dewatered FS (DFS) was mixed with shredded EFB and CPH at five different ratios: 1DFS:1EFB, 1DFS:1CPH, and DFS:EFB:CPH in ratios of 1:1:1, 2:1:1, and 2:2:1 and composted for 3 months. Select physicochemical parameters and pathogens were monitored every fortnightly and 3 weeks, respectively. Results Maximum temperatures obtained ranged 46.8-54.5°C. Though these temperatures were lower than sanitizing temperatures prescribed by USEPA, no E. coli was found in any of the piles at the end of composting. The ratio 2DFS:2EFB:1CPH was found to be the safest formulation and hence was used to grow tomato under greenhouse conditions. Tomato seeds were sown in three different growing media: 100% FS-based compost, 100% rice husk biochar, and 50% FS-based compost-50% rice husk biochar mix. Conclusion Results showed that FS-based compost was a suitable growing medium for tomato. Further studies into the optimal rate and frequency of application of compost teas on tomato are recommended.

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Section: Greenhouse Experimentsmentioning

confidence: 99%

Effects of co-composting of faecal sludge and agricultural wastes on tomato transplant and growth

Nartey

Amoah

Ofosu-Budu

et al. 2017

Int J Recycl Org Waste Agricult

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“…Mean days to germination (MDG) were calculated by the formula MDG = ∑GiTi/∑Gi, where Gi was the number of germinated seeds at day Ti, and Ti was the I-th day of germination (Gerson and Honma, 1978).…”

mentioning

confidence: 99%

Alteration of Seedstalk Development, Seed Yield, and Seed Quality in Carrot by Varying Temperature during Seed Growth and Development

Elballa¹,

Cantliffe²

1996

jashs

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The effect of temperature on seedstalk development, seed yield and quality in carrot (Daucus carota L.) was investigated in growth chambers at constant day/night temperatures of 33/28, 28/23, 25/20, 23/18, 20/15, and 17/12 °C. Days to flowering, seedstalk height, number of umbels, and seed yield decreased linearly with increasing temperature from 17/12 to 33/28 °C. Continuous high temperature (33/28 °C) had a detrimental effect on germination as measured by a standard germination test and an accelerated aging test. Optimum germination of the progeny occurred at 20/15 °C; however, germination rate was faster when seeds matured at 23/18 °C. Seeds that developed at 33/28 °C produced seedlings with the lowest vigor, while those which developed at 20/15 °C produced seedlings with the highest vigor. Brief exposure of plants to 33/28 °C during anthesis or early seed development was as detrimental to seed yield as continuous exposure to 33/28 °C. Exposure to high temperature (33/28 °C) during late seed development had less effect on seed yield, and seed quality was improved. Progeny vigor was reduced greatly by seed development at continuous high temperature (33/28 °C), but was unaffected by brief exposure to 33/28 °C at anthesis, early, or late in seed development. These results suggest that high (33/28 °C) day/night temperatures during pollination, fertilization, or early stages of seed development can greatly reduce carrot seed yield and seed quality.

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“…of seedlings emerged on that day)/total no. of seedlings emerged (Gerson and Honma, 1978). The following orthogonal contrasts were used to compare treatments: control vs. space-exposed seed; canister 2 vs. canister 7; layer A (or B) vs. layer D (or C); and the canister × layer interaction.…”

Section: Methodsmentioning

confidence: 99%

No Evidence of Adverse Effects on Germination, Emergence, and Fruit Yield due to Space Exposure of Tomato Seeds

Kahn¹,

Stoffella²

1996

jashs

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Additional index words. Lycopersicon esculentum, long duration exposure facility (LDEF), National Aeronautics and Space Administration, space exposed experiment developed for students (SEEDS), space shuttle Abstract. Seeds of 'Rutgers California Supreme' tomato (Lycopersicon esculentum Mill.) were exposed to outer space conditions aboard the long duration exposure facility (LDEF) satellite in the space exposed experiment developed for students (SEEDS) project of the National Aeronautics and Space Administration (NASA). Seeds aboard the LDEF were packed in dacron bags forming four layers per sealed canister. Some of these seeds were used in Oklahoma and Florida for studies of germination, emergence, and fruit yield. Among all measured variables in three experiments, there was only one significant main effect of canister 2 versus canister 7 (for mean time to germination) and only one main effect of layer (for seedling shoot dry weight). There also were only two inconsistent canister x layer interactions in the germination tests. The contrast of Earth-based control seed versus space-exposed seed was significant four times: in Oklahoma in 1991 the mean time to germination of space-exposed seeds and the days to 50% of final germination were 0.7 days less than for Earth-based seeds, and in Florida in 1992 seedling percent emergence and shoot dry weight were increased by space exposure. Fruit yield and marketability were unaffected in plants grown from space-exposed seeds. These results support student findings from the SEEDS project, and provide evidence that tomato seeds can survive in space for several years without adverse effects on germination, emergence, and fruit yield.

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Emergence response of the pepper at low soil temperature

Cited by 29 publications

References 4 publications

Effects of co-composting of faecal sludge and agricultural wastes on tomato transplant and growth

Effects of co-composting of faecal sludge and agricultural wastes on tomato transplant and growth

Alteration of Seedstalk Development, Seed Yield, and Seed Quality in Carrot by Varying Temperature during Seed Growth and Development

No Evidence of Adverse Effects on Germination, Emergence, and Fruit Yield due to Space Exposure of Tomato Seeds

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