Fresh-Market Tomato Production in California

Strange, Michelle Le; Schrader, Wayne L.; Hartz, T.K.

doi:10.3733/ucanr.8017

Cited by 20 publications

(14 citation statements)

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“…Soil properties were obtained from the Soil Survey Geographic (SSURGO) database [45]. Nitrogen fertilizer information (application rates at each crop) was estimated based on the information from literature review and use rate recommendations from farm advisors [46][47][48][49][50][51][52][53][54][55]. Corn and oats were defined to have 80% of the N fertilizer as manure [53,56].…”

Section: Site Descriptionmentioning

confidence: 99%

Nitrate Runoff Contributing from the Agriculturally Intensive San Joaquin River Watershed to Bay-Delta in California

et al. 2019

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Nitrogen loading from agricultural landscapes can trigger a cascade of detrimental effects on aquatic ecosystems. Recently, the spread of aquatic weed infestations (Eichhornia crassipes, Egeria densa, Ludwigia spp., and Onagraceae) in the Sacramento-San Joaquin Delta of northern California has raised concerns, and nitrogen loading from California’s intensive farming regions is considered as one of the major contributors. In this study, we employed the Soil and Water Assessment Tool (SWAT) to simulate nitrogen exports from the agriculturally intensive San Joaquin River watershed to the Delta. The alternate tile drainage routine in SWAT was tested against monitoring data in the tile-drained area of the watershed to examine the suitability of the new routine for a tile nitrate simulation. We found that the physically based Hooghoudt and Kirkham tile drain routine improved model performance in representing tile nitrate runoff, which contributed to 40% of the nitrate loading to the San Joaquin River. Calibration results show that the simulated riverine nitrate loads matched the observed data fairly well. According to model simulation, the San Joaquin River plays a critical role in exporting nitrogen to the Delta by exporting 3135 tons of nitrate-nitrogen annually, which has a strong ecological implication in supporting the growth of aquatic weeds, which has impeded water flow, impairs commercial navigation and recreational activities, and degrades water quality in Bay-Delta waterways. Since nitrate loadings contributed by upstream runoff are an important nutrient to facilitate weed development, our study results should be seen as a prerequisite to evaluate the potential growth impact of aquatic weeds and scientific evidence for area-wide weed control decisions.

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Section: Site Descriptionmentioning

confidence: 99%

Nitrate Runoff Contributing from the Agriculturally Intensive San Joaquin River Watershed to Bay-Delta in California

et al. 2019

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“…Plants of CGH tomatoes may be more sensitive to N fertilization than staked-upright tomatoes (Ozores-Hampton et al, 2013a) and the N rate used in the study (319 kg · ha -1 ) may have been higher than adequate for this tomato type. Research with California bush tomatoes, which are genetically different from CGH but have compact plant architecture, has shown that maximum yields may be obtained with 112 to 202 kg · ha -1 N with drip irrigation under normal conditions (Le Strange et al, 2000). However, California growers may apply 140 to 280 kg · ha -1 N for bush-grown tomatoes (Le Strange et al, 2000).…”

Section: Resultsmentioning

confidence: 99%

“…Research with California bush tomatoes, which are genetically different from CGH but have compact plant architecture, has shown that maximum yields may be obtained with 112 to 202 kg · ha -1 N with drip irrigation under normal conditions (Le Strange et al, 2000). However, California growers may apply 140 to 280 kg · ha -1 N for bush-grown tomatoes (Le Strange et al, 2000). N rate recommendations for CGH tomatoes cultivated in Florida are still not available and further research on the matter is needed; thus, N rates used in the present study reflect common cultural practices of Florida tomato growers.…”

Section: Resultsmentioning

confidence: 99%

Effect of Plant Population and Breeding Lines on Fresh-market, Compact Growth Habit Tomatoes Growth, Flowering Pattern, Yield, and Postharvest Quality

Frasca¹,

Ozores-Hampton²,

Scott³

et al. 2014

horts

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Compact growth habit (CGH) tomatoes (Solanum lycopersicum) are determinate plants with shortened internodes and strong side branching due to the brachytic gene (br) that grow either prostrate or upright as a result of unidentified gene(s). Compact growth habit tomatoes do not require staking, tying, or pruning and can potentially be mechanically harvested, lowering Florida fresh-market tomato production costs. Therefore, the objective of this study was to evaluate the effects of two planting configurations (single and double row) and breeding lines (BLs) on CGH tomato plant growth, flowering pattern, yield, and postharvest fruit quality. Two experiments were conducted in Immokalee, FL, during Spring 2013 and 2014 in a split-plot design with four replications. Planting configurations affected CGH tomato growth at midseason in 2013 but not in 2014; however, in 2014, CGH tomato vines grew outside the beds into the row middles, which is uncommon for this tomato type and undesirable. Plants of CGH tomatoes had a similar flowering pattern to a conventional upright tomato cultivar, which was unexpected. Planting configurations did not affect marketable yields in 2013, but single-row plots produced higher extra-large and total marketable yields at first and total season harvests in 2014. Total season marketable harvests ranged from 26.1 to 53.6 and 29.3 to 45.6 Mg·ha−1 in 2013 and 2014, respectively. Fla 8916 was among the highest yielding BLs, maximizing extra-large and total season marketable yields. Unmarketable fruit ranged from 22% to 31% and 25% to 52% of the total season harvest in 2013 and 2014, respectively, and the most common defects were sunscald, off-shape, catface, and graywall. All CGH evaluated may be suitable for mature-green harvest regarding postharvest fruit quality, although fruit ripening uniformity was of concern in 2014. Average CGH total season marketable yields harvested twice were lower than expected yields of staked-upright tomato cultivars that may be harvested three times, but higher than Florida average yields. However, CGH tomato total production cost can potentially be lower than staked-upright cultivars making CGH tomatoes a viable alternative for the Florida mature-green fresh-market industry to remain sustainable.

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“…In both years, cultural practices were standard for tomato, broccoli and lettuce production in the San Joaquin Valley (Jackson et al 1996;Le Strange et al 1996, 2000.…”

Section: Transplanting Into Sudexmentioning

confidence: 99%

Sudex cover crops can kill and stunt subsequent tomato, lettuce and broccoli transplants through allelopathy

Summers¹,

Mitchell²,

Prather³

et al. 2008

Cal Ag

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Fresh-Market Tomato Production in California

Cited by 20 publications

References 0 publications

Nitrate Runoff Contributing from the Agriculturally Intensive San Joaquin River Watershed to Bay-Delta in California

Nitrate Runoff Contributing from the Agriculturally Intensive San Joaquin River Watershed to Bay-Delta in California

Effect of Plant Population and Breeding Lines on Fresh-market, Compact Growth Habit Tomatoes Growth, Flowering Pattern, Yield, and Postharvest Quality

Sudex cover crops can kill and stunt subsequent tomato, lettuce and broccoli transplants through allelopathy

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