Abstract
A sequence of lettuce and tomato crops was grown in a field experiment on a sandy loam soil in order to study the relationship between soil tillage and plant growth under the near optimal water and nutrient conditions which are characteristic of vegetable production. This paper describes the performance of processing tomato crops, grown over two seasons under a range of soil management systems. The soil management systems included a cultivated and a zero-tillage treatment, as well as a zero-tillage treatment which followed a crop of subterranean clover (Trifoliurn subterraneum L.). The subterranean clover was sown in autumn and senesced in early summer to form an in-situ mulch. The bulk density of the soil in the zero-tillage treatment was high, and this was associated with a large reduction in vegetative growth, compared with the cultivated treatment. The bulk density of the soil was also high in the treatment where the subterranean clover was grown, but the vegetative growth of tomatoes was equal to that in the cultivated treatment. Despite the large differences in vegetative growth among treatments, there was no significant difference in the fruit yield. These results show that processing tomatoes can be successfully grown under zero-tillage when irrigation and fertilizer are well managed, and that vegetative growth and fruit yield are poorly correlated. The in-situ mulch of subterranean clover improved the physical conditions of the soil compared to the zero-tillage treatment, successfully controlled weeds and reduced soil erosion, but at the cost of having land out of production during the winter.
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Claims 11
Claim · model-written summary
Zero tillage increased soil bulk density relative to cultivation.
Verbatim
e0“The bulk density of the soil in the zero-tillage treatment was high, and this was associated with a large reduction in vegetative growth, compared with the cultivated treatment.”
t0“Soil management for irrigated vegetable production. I. The growth of processing tomatoes following soil preparation by cultivation, zero-tillage and an in situ -grown mulch”
Claim · model-written summary
Zero tillage substantially reduced tomato vegetative growth relative to cultivation.
Verbatim
e0“The bulk density of the soil in the zero-tillage treatment was high, and this was associated with a large reduction in vegetative growth, compared with the cultivated treatment.”
t0“Soil management for irrigated vegetable production. I. The growth of processing tomatoes following soil preparation by cultivation, zero-tillage and an in situ -grown mulch”
Claim · model-written summary
Clover mulch treatment also had high soil bulk density.
- Taxon
- tomatoes
Solanum lycopersicume0 - Treatment
- subterranean clovere0
- Outcome
- bulk density of the soile0
- Direction
- highe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The bulk density of the soil was also high in the treatment where the subterranean clover was grown, but the vegetative growth of tomatoes was equal to that in the cultivated treatment.”
Claim · model-written summary
Tomato vegetative growth with clover was equal to the cultivated treatment.
- Taxon
- tomatoesSolanum lycopersicume0
- Treatment
- subterranean clovere0
- Outcome
- vegetative growthe0
- Direction
- equale0
- Comparator
- cultivated treatmente0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The bulk density of the soil was also high in the treatment where the subterranean clover was grown, but the vegetative growth of tomatoes was equal to that in the cultivated treatment.”
Claim · model-written summary
Fruit yield did not differ significantly among soil management treatments.
- Taxon
- processing tomatoest0
- Treatment
- treatmentse0
- Outcome
- fruit yielde0
- Direction
- no significant differencee0
Not reportedComparator
Verbatim
e0“Despite the large differences in vegetative growth among treatments, there was no significant difference in the fruit yield.”
t0“Soil management for irrigated vegetable production. I. The growth of processing tomatoes following soil preparation by cultivation, zero-tillage and an in situ -grown mulch”
Claim · model-written summary
Tomato vegetative growth and fruit yield were poorly correlated.
Not reportedDirection
Verbatim
e0“vegetative growth and fruit yield are poorly correlated.”
t0“Soil management for irrigated vegetable production. I. The growth of processing tomatoes following soil preparation by cultivation, zero-tillage and an in situ -grown mulch”
Claim · model-written summary
Well-managed irrigation and fertilizer allow successful zero-tillage tomato production.
Verbatim
e0“processing tomatoes can be successfully grown under zero-tillage when irrigation and fertilizer are well managed”
Claim · model-written summary
Clover mulch improved soil physical conditions relative to bare zero tillage.
Verbatim
e0“The in-situ mulch of subterranean clover improved the physical conditions of the soil compared to the zero-tillage treatment, successfully controlled weeds and reduced soil erosion, but at the cost of having land out of production during the winter.”
t0“Soil management for irrigated vegetable production. I. The growth of processing tomatoes following soil preparation by cultivation, zero-tillage and an in situ -grown mulch”
Claim · model-written summary
Clover mulch controlled weeds.
Verbatim
e0“The in-situ mulch of subterranean clover improved the physical conditions of the soil compared to the zero-tillage treatment, successfully controlled weeds and reduced soil erosion, but at the cost of having land out of production during the winter.”
t0“Soil management for irrigated vegetable production. I. The growth of processing tomatoes following soil preparation by cultivation, zero-tillage and an in situ -grown mulch”
Claim · model-written summary
Clover mulch reduced soil erosion.
Verbatim
e0“The in-situ mulch of subterranean clover improved the physical conditions of the soil compared to the zero-tillage treatment, successfully controlled weeds and reduced soil erosion, but at the cost of having land out of production during the winter.”
t0“Soil management for irrigated vegetable production. I. The growth of processing tomatoes following soil preparation by cultivation, zero-tillage and an in situ -grown mulch”
Claim · model-written summary
Clover mulch left the land out of production during winter.
- Taxon
- processing tomatoest0
- Treatment
- in-situ mulch of subterranean clovere0
- Outcome
- land out of productione0
- Qualifier
- during the wintere0
Not reportedComparatorDirection
Verbatim
e0“The in-situ mulch of subterranean clover improved the physical conditions of the soil compared to the zero-tillage treatment, successfully controlled weeds and reduced soil erosion, but at the cost of having land out of production during the winter.”
t0“Soil management for irrigated vegetable production. I. The growth of processing tomatoes following soil preparation by cultivation, zero-tillage and an in situ -grown mulch”
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