scholarly journals FOLIAR DIAGNOSIS STUDY OF CLIMATIC INFUENCES ON THE NUTRITION OF SPRING AND FALL GROWN GREENHOUSE TOMATOES

1941 ◽  
Vol 16 (1) ◽  
pp. 117-144 ◽  
Author(s):  
Walter Thomas ◽  
Warren B. Mack
Keyword(s):  
Foliar Diagnosis ◽  
Greenhouse Tomatoes

Evaluation of tomato hybrids with different level of ripe rate under hydroponic conditions (fitopyramide)

2020 ◽  
Author(s):  
M.N. AL-Rukabi ◽  
◽  
V.I. Leunov
Keyword(s):  
Mineral Nutrient ◽  
Tomato Plants ◽  
Agricultural Method ◽  
Seedling Germination ◽  
Greenhouse Tomatoes ◽  
Hydroponic Conditions ◽  
Nutrient Solutions ◽  
Variety Testing

Greenhouse tomatoes are divided into early, medium and late-maturing. The days from seedling germination to the first harvest are taken into account. Tomato has a huge potential for heterosis in terms of precocity, overall yield, signs of resistance and uniformity. The preferred agricultural method is hydroponics, which allows you to grow plants without using soil, only using mineral nutrient solutions in water. The cultivation of tomato plants on the " Fitopyramida " will allow to sell their products in the periods with the highest realized prices. An experiment on variety testing of 11 tomato hybrids of different product groups that differ in precocity allowed us to select the most adapted to the conditions of the " Fitopyramida " technology, including the indeterminate beef Ruddy ball F1, cherry hybrids Elf F1 and orange-fruited cherry Magic harp F1. the determinant hybrid Captain F1 showed Good results.

INFLUENCE OF WEEKLY CHANGES IN TEMPERATURE AND LIGHT REGIMES ON THE INCIDENCE OF BLOTCHY RIPENING OF TOMATOES

1974 ◽  
Vol 54 (1) ◽  
pp. 129-133
Author(s):  
T. MATSUMOTO ◽  
C. A. HORNBY
Keyword(s):  
Cumulative Effect ◽  
Controlled Environment ◽  
Diurnal Changes ◽  
Light Regimes ◽  
Common Trend ◽  
Cloudy Weather ◽  
Two Factors ◽  
Temperature Levels ◽  
Greenhouse Tomatoes ◽  
Compensatory Effect

The hypothesis that blotchy ripening (BR) of greenhouse tomatoes (Lycopersicon esculentum Mill.) was associated with a cumulative effect of alternating periods of bright sunshine and cloudy weather was tested in controlled environment chambers. Temperatures were programed to give diurnal changes between 11.7 C/26.7 C night/day representing sunny days, and 11.7 C/21.2 C night/day for cloudy days. The two levels of light were (1) 18,299 lx for sunny days, and (2) 16,656 lx for cloudy days. These two factors were combined in four regimes to represent (1) sunny-day temperature and light; (2) sunny-day temperature and alternate weeks of sunny-day and cloudy-day light; (3) alternate weeks of sunny-day and cloudy-day temperature and sunny-day light; and (4) alternate weeks of sunny-day temperature and light, and cloudy-day temperature and light. Four series of plants showed a common trend. Consistent sunny-day temperature and alternating weeks of sunny or cloudy-day light produced the highest incidence of BR. Alternating weeks of temperature levels with consistent sunny-day light produced less BR but not significantly so. When sunny-day temperature and light were alternated weekly with cloudy day conditions, there was a reduced percentage of BR and less severe symptoms. This regime suggests a compensatory effect when temperature is varied directly with changes in light intensity. The regime for consistent sunny-day temperature and light gave the lowest BR incidence with mild symptoms.

COMPARISON OF ASCORBIC ACID CONTENT IN IMPORTED TOMATOES AND IN CULTIVARS GROWN IN NOVA SCOTIA

1987 ◽  
Vol 67 (1) ◽  
pp. 331-335
Author(s):  
HAK-YOON JU ◽  
W. JOHN MULLIN
Keyword(s):  
Ascorbic Acid ◽  
Nova Scotia ◽  
Vitamin C ◽  
Acid Content ◽  
Ascorbic Acid Content ◽  
Fresh Weight ◽  
Atlantic Region ◽  
Significant Difference ◽  
Cluster Location ◽  
Greenhouse Tomatoes

The ascorbic acid (vitamin C) content of fresh imported field tomatoes and Nova Scotia greenhouse and field tomatoes was determined on a bi-weekly basis during the period of availability of each type of tomato to the Nova Scotia consumer in 1984. The average ascorbic acid contents of imported and Nova Scotia field and greenhouse tomatoes were 13.3, 16.7 and 17.7 mg 100 g−1 fresh weight, respectively. A study of nine recommended or promising field tomatoes for the Atlantic region showed significant differences in ascorbic acid content among the cultivars. The cultivar Quick Pick had the highest ascorbic acid content of 22.5 ± 1.5 mg 100 g−1, the cultivar Campbell 18 had the lowest content, 12.0 ± 2.9 mg 100 g−1. In Dombito greenhouse tomatoes the stage of maturity and the effect of cluster location were tested against ascorbic acid content. The lowest ascorbic acid content of 9.1 ± 1.0 mg 100 g−1 was found with the small green tomatoes while others from mature green to overripe contained 14.0–16.7 mg 100 g−1. Tomatoes from different cluster locations showed no significant difference in ascorbic acid content.Key words: Vitamin C, L-ascorbic acid, tomatoes

scholarly journals Grey mould development in greenhouse tomatoes under drip and furrow irrigation

2008 ◽  
Vol 28 (3) ◽  
pp. 403-409 ◽  
Author(s):  
Kamel Aissat ◽  
Philippe C. Nicot ◽  
Abdelhadi Guechi ◽  
Marc Bardin ◽  
Mohamed Chibane
Keyword(s):  
Grey Mould ◽  
Furrow Irrigation ◽  
Greenhouse Tomatoes

Genetic characterization of Pepino mosaic virus isolates from Belgian greenhouse tomatoes reveals genetic recombination

2007 ◽  
Vol 121 (2) ◽  
pp. 131-146 ◽  
Author(s):  
Inge M. Hanssen ◽  
Anneleen Paeleman ◽  
Lieve Wittemans ◽  
Kris Goen ◽  
Bart Lievens ◽  
...  
Keyword(s):  
Mosaic Virus ◽  
Genetic Characterization ◽  
Genetic Recombination ◽  
Pepino Mosaic Virus ◽  
Greenhouse Tomatoes ◽  
Virus Isolates

scholarly journals Evaluation of Foliar Sprays of Bacteriophages for the Management of Bacterial Canker in Greenhouse Tomatoes

2009 ◽  
Vol 10 (1) ◽  
pp. 19 ◽  
Author(s):  
David M. Ingram ◽  
Shi-En Lu
Keyword(s):  
Total Yield ◽  
Foliar Spray ◽  
Bacterial Canker ◽  
Symptom Development ◽  
Plant Mortality ◽  
Greenhouse Tomato ◽  
Disease Progress ◽  
Foliar Sprays ◽  
Greenhouse Tomatoes

AgriPhage applied as a preventative foliar spray significantly reduced severity of bacterial canker of greenhouse tomato in two of three years. Area under the disease progress curves (AUDPC) indicated that AgriPhage slowed the progression of bacterial canker symptom development by 50% and 59% in 2006 and 2007, respectively. Plant mortality was significantly reduced by 76% in 2006 as compared to the inoculated control. AgriPhage-treated plants produced significantly greater total yield in 2006 only. Copper and Kasumin sprays also significantly reduced severity (AUDPC) of bacterial canker in 2007 as compared to the inoculated control. However, none of these treatments reduced symptom development or increased yield in 2008. Accepted for publication 9 April 2009. Published 12 May 2009.

scholarly journals Improved leaf pruning reduces development of stem cankers caused by grey mould in greenhouse tomatoes

2010 ◽  
Vol 30 (2) ◽  
pp. 465-472 ◽  
Author(s):  
V. Decognet ◽  
F. Ravetti ◽  
C. Martin ◽  
P. C. Nicot
Keyword(s):  
Grey Mould ◽  
Greenhouse Tomatoes ◽  
Stem Cankers

A SPECIALIZED TOMATO FORM OF THE TOBACCO MOSAIC VIRUS IN CANADA

1962 ◽  
Vol 40 (1) ◽  
pp. 49-51 ◽  
Author(s):  
Blair H. MacNeill
Keyword(s):  
Tobacco Mosaic Virus ◽  
Mosaic Virus ◽  
Mosaic Disease ◽  
Specialized Form ◽  
Greenhouse Tomatoes

Extensive sampling of naturally infected field and greenhouse tomatoes has revealed the presence of a specialized form of the tobacco mosaic virus. This tomato form, readily differentiated from that commonly occurring in tobacco, has been found in widely separated geographic areas within Canada, and is the dominant, if not the only, form in tomato even in regions where tobacco and tomatoes are grown as contiguous crops. This specialization to tomato of a virus form distinct from that in tobacco does not support the view commonly held that smoking tobacco is the main source of inoculum for the mosaic disease in commercial tomatoes.

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