Nivedita, M (1992) Effect of moisture status and bulk density on germination and emergence of pearl millet, Sorghum and groundnut on an alfisol. Masters thesis, Andhra Pradesh Agricultural University.
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Supervisors
| Supervisors Name | Supervisors ID |
|---|---|
| Laryea, K B | ICRISAT |
| Medakkar, S | Andhra Pradesh Agricultural University |
Abstract
In greenhouse experiments, the germination and emergence of pearl millet, sorghum and groundnut in an Alfisol, was found to decrease significantly with reduction in soil moisture content and increase in bulk density. The effect of increasing bulk density was considerable at low soil moisture contents. A bulk density of 1.45 g ~ m 'an~d moisture contents ranging from 8% to 11% were observed to be favorable for germination and emergence of all the three crops. A bulk density of 1.65 g cm-3 was critical for emergence of pearl millet and sorghum. Excessive dryness and high bulk density were detrimental to germination as well as seedling emergence. Initiation of germination occurred when the gravimetric moisture content ranged from 4% to 8% for the three crops. A gravimetric moisture content greater than 192 significantly decreased germination and emergence. Emergence was delayed by one or two days when the soil was at higher bulk density in the low moisture content ran es. Rate of emergence was faster at a bulk density of 1.45 g cmS than at either 1.55 or 1.65 g om-$. In the wet moisture range, the rate of emergence was faster at all the three bulk densities than in the dry moisture ranges. Emergence increased with increase in moisture content. Increase in bulk density decreased the emergence for the three crops.
| Item Type: | Thesis (Masters) |
|---|---|
| Divisions: | UNSPECIFIED |
| CRP: | UNSPECIFIED |
| Subjects: | Mandate crops > Millets Mandate crops > Groundnut Mandate crops > Sorghum Others > Soil Science |
| Depositing User: | Siva Shankar |
| Date Deposited: | 30 Aug 2011 05:04 |
| Last Modified: | 30 Aug 2011 05:04 |
| URI: | http://oar.icrisat.org/id/eprint/656 |
| Acknowledgement: | UNSPECIFIED |
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