Tomato Production Under Simple Protective Tunnels in Egypt

El-Aidy, F.

doi:10.17660/actahortic.1986.190.58

Cited by 5 publications

(6 citation statements)

References 0 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…There is a reduction in daytime air temperature when an entire greenhouse is shaded, and this lower temperature resulting from shade is likely a critical factor in the increase in yield of tomato grown in hot climates (El Aidy, 1986;El Gizawy et al, 1993a). The increase in yield is the result of the sensitivity of fruit set to high temperature (Sato et al, 2002).…”

Section: Discussionmentioning

confidence: 99%

“…In hot climates, shading a tomato crop increases fruit set and yield. Studies in Egypt suggested a cloth with a 0.4 shade density was optimal; an increase to 0.5 or 0.6 shade density generally decreased plant growth and yield (El Aidy, 1986;El Gizawy et al, 1993a). In climates with more moderate temperatures, shade typically reduces yield of tomato grown in a greenhouse.…”

mentioning

confidence: 99%

See 1 more Smart Citation

Density and Duration of Shade Affect Water and Nutrient Use in Greenhouse Tomato

Gent¹

2008

J. Amer. Soc. Hort. Sci.

View full text Add to dashboard Cite

Shading a greenhouse may have a time-dependent effect on fruit production and water and nutrient uptake in tomato plants (Solanum lycopersicum L.) as a result of acclimation to light and a dependence on stored carbohydrate and nutrients. In 2 years in the northeastern United States, shadecloth was applied at the start of warm weather in June and the houses were shaded until late August. Simultaneous comparisons were made among greenhouse sections that were either not shaded or covered with reflective aluminized shadecloth that blocked 0.15, 0.30, or 0.50 of direct sunlight. The amounts of water, nitrogen, and potassium taken up per day were calculated for successive 3-week intervals after shade was applied. The effect of shade on these uptake rates was compared with the effect on the rate of fruit production. There was a linear decline in water, nitrogen, and potassium uptake with increasing shade density. In each 3-week interval, water uptake under 0.5 shade density was 25% and 20% less than under no shade in 2004 and 2005, respectively. The uptake of nitrogen and potassium uptake under 0.5 shade density was ≈25% less than that under no shade. Shading did not affect the rate of fruit production within 3 weeks of application, but after more than 6 weeks, it was 30% less under 0.5 shade density than under no shade. The use efficiencies of radiation, water, and nutrients for fruit production increased with shade density immediately after shade were applied. These effects of shade on apparent resource use efficiencies dissipated from 3 to 6 weeks after shade was applied, because the effect of shade density on fruit production became proportionally the same as the effects on water and nutrient uptake. The water and nutrient uptake of greenhouse tomato acclimated to the change in irradiance resulting from shade within 3 weeks, but the full effect of shade on fruit production was not seen until 6 weeks after the application of shade.

show abstract

Section: Discussionmentioning

confidence: 99%

mentioning

confidence: 99%

Density and Duration of Shade Affect Water and Nutrient Use in Greenhouse Tomato

Gent¹

2008

J. Amer. Soc. Hort. Sci.

View full text Add to dashboard Cite

show abstract

“…grown in hot climates. Tomato plants grown in Egypt for the entire season under shade that attenuated 30% to 40% of sunlight had higher yields and more fruit than those grown without shade (Abdel-Mawgoud et al, 1996;El-Aidy, 1986). Increasing shade density above 40% decreased flowering and yield.…”

mentioning

confidence: 96%

Effect of Degree and Duration of Shade on Quality of Greenhouse Tomato

Gent¹

2007

horts

View full text Add to dashboard Cite

Some amount of shade may be optimal to produce high-quality tomatoes in a greenhouse during summer months in the northeast United States. Simultaneous comparisons were made among greenhouse sections that were either not shaded or covered with reflective aluminized shadecloth that attenuated 15%, 30%, or 50% of direct sunlight. The shadecloth was applied at the start of warm weather in June. The houses were shaded for the rest of the summer, and fruit was picked until late August. Total yield decreased linearly with increasing shade, but there was no significant difference among shade treatments in marketable yield. The fraction of fruit that was marketable was greatest for plants grown under 50% shade. This fraction was 9% greater than in a greenhouse with no shade in 2003 and 7% greater in 2004 and 2005. Cracked skin was the defect most affected by shade. Among sensitive cultivars, up to 35% of the fruit produced in greenhouses with no shade had cracked skin, whereas in greenhouses covered with 50% shade, only 24% to 26% of the tomatoes had cracked skin. There was no consistent trend for shade density in the fraction of fruit with green shoulder, blossom end rot, or irregular shape. The effect of shade increased with duration of shading. There was no effect of 50% shade compared with no shade on total yield within 20 days, but yield decreased by 20% in the interval from 25 to 45 days after shading and by 30% after 50 or more days of shading in 2005. Marketable yield only decreased after more than 45 days of shading for cultivars that were not sensitive to cracked skin or uneven ripening. Shade decreased fruit size over the entire season only in 2003. In general, shading increased the fraction of marketable tomato fruit without affecting fruit size.

show abstract

“…High temperature in summer under plastic house could cause plant injury to cucumber and tomato in Egypt [15].…”

Section: Introductionmentioning

confidence: 99%

Effect of Plastic Tunnel Size on Production of Cucumber in Delta of Egypt

El-Aidy¹

2007

Appl Ecol Env Res

View full text Add to dashboard Cite

Abstract. The experiments were carried out in the years of 2000, 2001 and 2003 at Kafr El-Sheikh. The main objective of this research was to study the influence of growing seasons and types of unheated plastic house on yields of two cucumber F 1 hybrids. Downy mildew and powdery mildew were lower in the winter season than during the early summer season. Likewise, they were lower inside the double span house than inside the single span house (at 60 days after transplanting).The highest total yield as number and weight was produced from Petostar hybrid grown inside the double span house during the early summer season.

show abstract

Tomato Production Under Simple Protective Tunnels in Egypt

Cited by 5 publications

References 0 publications

Density and Duration of Shade Affect Water and Nutrient Use in Greenhouse Tomato

Density and Duration of Shade Affect Water and Nutrient Use in Greenhouse Tomato

Effect of Degree and Duration of Shade on Quality of Greenhouse Tomato

Effect of Plastic Tunnel Size on Production of Cucumber in Delta of Egypt

Contact Info

Product

Resources

About