Friday, April 10, 2009

Tomato Mosaic Virus Disease


Virus Disease. Blotchy uneven ripening, similar to "Blotchy Ripening" due to potassium deficiency but blotchy areas more sharply defined. (cf. Plate 259, potassium deficiency)

Potassium deficiency


"Blotchy Ripening"; green and yellow areas merging into red color of surface. (cf. Plate 260, mosaic fruits)

Potassium deficiency

Leaflets slight marginal and intervenal chlorosis followed by brown marginal scorching; scorched margins curled foward.

Magnesium deficiency

Greenhouse view. Leaves intervenal chlorosis and necrosis.

Magnesium deficiency

Leaves intervenal chlorosis and necrosis; fruits show "Green Back".

Magnesium deficiency


Central intervenal chlorosis and green marginal bands.

Calcium deficiency


Dying back of trusses and "Blossom End Wilt" of distal fruitlets.