Competition for Light Between Tomatoes and Nightshades (Solanum nigrum or S. ptycanthum)

The effect of black and eastern black nightshade on the amount of photosynthetically active radiation (PAR) intercepted by a processing tomato canopy was studied along with the correlation between PAR and tomato growth and yield. During 1989 and 1990, black and eastern black nightshade were establis...

Full description

Saved in:
Bibliographic Details
Published in:Weed science 1992-04, Vol.40 (2), p.220-226
Main Authors: McGiffen, Milton E., Masiunas, John B., Hesketh, John D.
Format: Article
Language:English
Subjects:
Agronomy. Soil science and plant productions
Biological and medical sciences
CARACTERES DE RENDIMIENTO
COMPETENCIA BIOLOGICA
COMPETITION BIOLOGIQUE
COMPOSANTE DE RENDEMENT
COUVERT
CUBIERTA DE COPAS
Density
FOTOSINTESIS
Fruiting
FRUITS
FRUTAS
Fundamental and applied biological sciences. Psychology
Generalities, botany, ecology, damages, economic importance
INDICE DE CRECIMIENTO
Leaf area
Leaves
LUMIERE
Luminous intensity
LUZ
LYCOPERSICON ESCULENTUM
MALEZAS
MAUVAISE HERBE
Parasitic plants. Weeds
PHOTOSYNTHESE
Photosynthetically active radiation
Phytopathology. Animal pests. Plant and forest protection
Plants
POBLACION VEGETAL
POPULATION VEGETALE
RENDEMENT DES CULTURES
RENDIMIENTO DE CULTIVOS
SOLANUM
SOLANUM NIGRUM
SUPERFICIE FOLIAR
SURFACE FOLIAIRE
TAUX DE CROISSANCE
Tomatoes
Vegetation canopies
Weed Biology and Ecology
Weeds
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:The effect of black and eastern black nightshade on the amount of photosynthetically active radiation (PAR) intercepted by a processing tomato canopy was studied along with the correlation between PAR and tomato growth and yield. During 1989 and 1990, black and eastern black nightshade were established at densities of 0 to 4.8 m−2 within rows of transplanted, irrigated processing tomatoes. Increasing the density of either nightshade species decreased the number of tomato fruit; however, eastern black nightshade reduced tomato yield more than black nightshade. Eastern black nightshade was taller than the tomatoes, reducing PAR reaching the top of the tomato canopy. PAR reaching the top of the tomato canopy was positively correlated with yield and negatively correlated with eastern black nightshade density. Eastern black nightshade intraspecific competition decreased both stem and berry weight. Black nightshade was never taller than tomatoes and did not affect PAR reaching the top of the crop canopy. Increasing the density of black nightshade decreased berry dry weight but increased the weight of stems and leaves.
ISSN:0043-1745
1550-2759
DOI:10.1017/S004317450005726X