Plant density as related to fertilizer needs for processing and fresh market tomatoes

Smith, C. B.; Demchak, Kathleen; Ferretti, P. A.; Orzolek, Michael D.

doi:10.1080/00103629209368678

Cited by 6 publications

(10 citation statements)

References 6 publications

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“…Plants grown at a greater population density competition at the higher population density. Smith et al (1992) also found that increasing tomato density reduced yield/plant. There were no differences between densities when shoot fresh weight and fruit yields of tomato were considered on an area basis.…”

Section: Resultsmentioning

confidence: 91%

“…The N content of tomato plants decreased from 8 to 15 WAP (Table 4). This was probably because N was being remobilized from the leaves and stem to the developing tomato fruit, and due to dilution caused by plant growth (Gonzalez Pounce and Salas, 1999;Smith et al, 1992). Also the amount of N available in the soil from the preplant fertilizer application was decreasing.…”

Section: Resultsmentioning

confidence: 99%

“…Several fertilization approaches could be used to optimize crop growth while reducing nutrient loss into the environment. Nutrients could be deeply banded under the tomato making them readily available to tomato roots and less likely to be lost through soil erosion (Smith et al, 1992). Fertilizing tomato during early growth stages may allow it to capture nutrients before transplanting into the fi eld (DiTomaso, 1995;Dyck and Liebman, 1994;Sainju et al, 2000), reducing the need for fertilizer applications in the fi eld.…”

mentioning

confidence: 99%

“…Fertilizing tomato during early growth stages may allow it to capture nutrients before transplanting into the fi eld (DiTomaso, 1995;Dyck and Liebman, 1994;Sainju et al, 2000), reducing the need for fertilizer applications in the fi eld. Increasing population densities of tomato may allow the crop to better utilize applied fertilizer (Smith et al, 1992). In order to develop these strategies it is necessary to study how tomato utilizes N (Sanchez and Doerge, 1999).…”

mentioning

confidence: 99%

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Population Density and Nitrogen Fertility Effects on Tomato Growth and Yield

Wahle¹,

Masiunas²

2003

HortSci

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Greenhouse hydroponics and field experiments were conducted to determine how nitrogen (N) fertilizer treatments affect tomato (Lycopersicon esculentum Mill.) growth, yield, and partitioning of N in an effort to develop more sustainable fertilization strategies. In a hydroponics study, after 4 weeks in nitrate treatments, shoot dry weight was five times greater at 10.0 than at 0.2 mm nitrate. An exponential growth model was strongly correlated with tomato root growth at all but 0.2 mm nitrate and shoot growth in 10 mm nitrate. Root dry weight was only 15% of shoot biomass. In field studies with different population densities and N rates, height in the 4.2 plants/m2 was similar, but shoot weight was less than in the 3.2 plants/m2. At 12 weeks after planting, shoot fresh weight averaged 3.59 and 2.67 kg/plant in treatments with 3.2 and 4.2 plants/m2, respectively. In 1998, final tomato yield did not respond to N rate. In 1999, there was a substantial increase in fruit yield when plants were fertilized with 168 kg·ha-1 N but little change in yield with additional N. Nitrogen content of the leaves and the portion of N from applied fertilizer decreased as the plants grew, and as N was remobilized for fruit production. Both studies indicate that decreasing N as a way to reduce N loss to the environment would also reduce tomato growth.

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Section: Resultsmentioning

confidence: 91%

Section: Resultsmentioning

confidence: 99%

mentioning

confidence: 99%

mentioning

confidence: 99%

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Population Density and Nitrogen Fertility Effects on Tomato Growth and Yield

Wahle¹,

Masiunas²

2003

HortSci

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“…This was probably due to N transfer from the leaves and stems to the developing tomato fruit (Gonzalez Ponce and Salas, 1999;Smith et al, 1992;Wahle and Masiunas, 2003). The distribution rate of HV-derived N into fruits was more than 60% of total HV-derived N absorbed, higher than that of N derived from soil and fertilizer, especially in the 1st and 2nd fruit cluster.…”

Section: Nitrogen Distributionmentioning

confidence: 99%

Uptake and Distribution of Nitrogen Derived from Hairy Vetch Used as a Cover Crop by Tomato Plant

Sugihara

Ueno

Hirata

et al. 2013

J. Japan. Soc. Hort. Sci.

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One of the ways to reduce chemical fertilizer application is the use of cover crops, which improve soil properties and supply nutrition to subsequent crops. The application effect of a legume cover crop, hairy vetch (Vicia villosa R., HV), on N dynamics in fresh market tomatoes (Solanum lycopersicum L.), 'House Momotaro,' was investigated using the 15 N-labeling method. Tomato seedlings were transplanted into a 1/2000 a Wagner pot at 0, 80, and 240 kg·ha −1 of N application (N0HV, N80HV, and N240HV) on June 9, 2011. Before transplanting, the labeled HV and chemical fertilizers were incorporated into the soil. Five tomato plants were collected 6 times in each treatment and then separated into leaves, stems, and roots. Fruits were harvested at maturity. HV-derived N uptake was recognized mainly in the first 4 weeks after transplant (WAT). Especially in N240HV, HV-derived N uptake ceased at 4 WAT. The uptake amounts of HV-derived N at 10 WAT were 587, 657, and 729 mg·plant −1 in N240HV, N80HV, and N0HV, respectively, and were increased by decreasing N fertilizer application. The rate of N uptake derived from HV to total N uptake in tomato plants (%N dfhv ) was the highest at 2 WAT, and %N dfhv in N80HV (52.1%) and N0HV (51.5%) were significantly higher than in N240HV (43.6%). After 2 WAT, %N dfhv decreased gradually in all N rates as tomatoes grew and decreased to 24.8%, 34.4%, and 37.1% in N240HV, N80HV, and N0HV, respectively, until 12 WAT. Nitrogen use efficiency (NUE) from HV-derived N was the highest at 10 WAT, and N0HV (55.3%) was significantly higher than N240HV (44.5%) and N80HV (49.8%). The partition rate of HVderived N into fruits was 63.9%, and 39.7% of HV-derived N was distributed into 1st and 2nd fruit clusters. From these results, it was clarified that HV can be expected to be an alternative N fertilizer because HV-derived N was absorbed effectively with a small amount of N fertilizer. Further research on fertilizer management in tomato's early stage will be needed for an N-reduction system because HV-derived N was mainly absorbed for 4 WAT.

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Optimizing Tomato Productivity and Water Use Efficiency Using Water Regimes, Plant Density and Row Spacing Under Arid Land Conditions

Ismail

Mousa

2014

Irrig. and Drain.

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A field experiment was conducted to study the effect of water regime (W), row spacing (RS) and plant density (D) on growth and productivity of tomato cv. 'Pito Pride' at the Agriculture Experimental Station of King Abdulaziz University. Two water regimes, W1 (70% of water requirement) and W2 (full water requirement) were studied. Under each water regime three row spacings (RS1, RS2, RS3) and two plant densities D1 (single plant per dripper) and D2 (two plants per dripper) were investigated. Results revealed that W1 reduced number of days to flowering and fruit setting, plant height, plant fresh weight and total yield, while it increased water productivity (WP). Decreasing RS increased water supply and total yield but decreased growth characteristics. D2 increased total yield by 122–168% and WP by 131–180% compared to D1. Interaction between the three variables investigated was significant for all assessed characteristics except fruit yield per plant, total fruit yield and WP. These characteristics were affected by the interaction between RS and D. The highest total yield and WP were obtained from the RS2‐D2 treatment. This treatment increased total yield per ha by 11–331% and WP by 12–300% compared with the maximum and minimum yield of other investigated treatments of both seasons. Copyright © 2014 John Wiley & Sons, Ltd.

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Plant density as related to fertilizer needs for processing and fresh market tomatoes

Cited by 6 publications

References 6 publications

Population Density and Nitrogen Fertility Effects on Tomato Growth and Yield

Population Density and Nitrogen Fertility Effects on Tomato Growth and Yield

Uptake and Distribution of Nitrogen Derived from Hairy Vetch Used as a Cover Crop by Tomato Plant

Optimizing Tomato Productivity and Water Use Efficiency Using Water Regimes, Plant Density and Row Spacing Under Arid Land Conditions

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