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Posted on 6:28 PM by Wanto and filed under
By Paul Valance
The species Brassica Chinensis is presumed to have originated in eastern Asia; the variety pekinensis appears to have a more definite centre of diversity in China. Both forms (Paak-ts'oi and Pe-tsai) are important crops in most areas of the Far East and South-east Asia. Widely grown in Malaysia, Indonesia, the Philippines, China, Taiwan, East and West Africa, South America and the Caribbean. The variety pekinensis (Rupr.) is commonly referred to as Pe-tsai and is becoming more widely grown than the variety chinensis (Paak-ts'oi). A biennial herb, grown as an annual. Basal leaves: broad, shining, 20-50 cm in length, petioles thickened and white. Flowers: bright or pale yellow, approximately 1 cm in length. Fruit: a siliqua, slender, 3-6 cm in length. Seeds are round, dark brown; weight of 1000 seeds = 3 g.
Scale is another insect difficult to dislodge. This settles on the undersides of leaves, often on or beside a main rib, juicy and succulent, where it sucks away at the sap and leaves a slightly paler portion around it. Try to scrape them away with a matchstick dipped in white oils, but for safety sake also give the plant a good spraying with insecticide.
Very occasionally you may find a snail, a slug or even an earthworm among your plants, particularly if they have been placed outside in the summer. These are generally comparatively simple to see and identify and can generally be removed simply enough by the classic finger and thumb method.
Nitrogenous top-dressing is required at regular intervals to obtain full leaf development. Headed (Pe-tsai) plants may be harvested 50-80 days from sowing seed and may attain a height of 40-50 cm. Loose-growing, non-heading (Paak-ts'oi) forms may be harvested 40-60 days from sowing.
The most commonly grown Brassicas in tropical areas are: Brassica chinensis L. - Chinese Cabbage, White Cabbage; Brassica juncea (L) Czern & Coss - Indian Mustard, Leaf Mustard; Brassica oleracea L. var. acephala D.C. - Kale, Collard; var. botrytis L. - Cauliflower, Broccoli; var. capitata L. - Cabbage; var. gongylodes L. - Kohlrabi; var. italica Plenck - Sprouting Broccoli; var. rapa L. - Turnip.
The nutritional value of the Brassicas, in general, is high although there is some variation in the nutritional composition of the various crops used as vegetables.
Scale is another insect difficult to dislodge. This settles on the undersides of leaves, often on or beside a main rib, juicy and succulent, where it sucks away at the sap and leaves a slightly paler portion around it. Try to scrape them away with a matchstick dipped in white oils, but for safety sake also give the plant a good spraying with insecticide.
Very occasionally you may find a snail, a slug or even an earthworm among your plants, particularly if they have been placed outside in the summer. These are generally comparatively simple to see and identify and can generally be removed simply enough by the classic finger and thumb method.
Nitrogenous top-dressing is required at regular intervals to obtain full leaf development. Headed (Pe-tsai) plants may be harvested 50-80 days from sowing seed and may attain a height of 40-50 cm. Loose-growing, non-heading (Paak-ts'oi) forms may be harvested 40-60 days from sowing.
The most commonly grown Brassicas in tropical areas are: Brassica chinensis L. - Chinese Cabbage, White Cabbage; Brassica juncea (L) Czern & Coss - Indian Mustard, Leaf Mustard; Brassica oleracea L. var. acephala D.C. - Kale, Collard; var. botrytis L. - Cauliflower, Broccoli; var. capitata L. - Cabbage; var. gongylodes L. - Kohlrabi; var. italica Plenck - Sprouting Broccoli; var. rapa L. - Turnip.
The nutritional value of the Brassicas, in general, is high although there is some variation in the nutritional composition of the various crops used as vegetables.
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Agave is a succulent indoor garden houseplant so give fukk sun, water freely in summer, and seldom in winter.
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