Thesaurus capensis :or, illustrations of the South African flora, being figures and brief descriptions of South African plants, selected from the Dublin University Herbarium /by William H. Harvey.

v. 2

On design and control of simulated moving bed plants

Magdeburg, Univ., Fak. für Elektrotechnik und Informationstechnik, Diss., 2010

Propagação da samambaia-de-metro

The author studied the possibility of propagating "Samambaia de Metro" Polypodium Subauriculatum, by means of spores, since vegetative multiplication is hard to obtain for large numbers of plants. Five treatments were tried, with 4 replications. I - Coarse "Flores Floor" and fine "Flores Floor". II - Coarse Flores Floor and moss. III - Coarse sand, Flores Floor and brick powder VI - Coarse sand, Flores Floor and brick powder V - Coarse sand and Flores Floor. The best germination was obtained with treatment V (Coarse sand et the boltom), topesed by Flores Floor. The pots were permanently kept on a tray pul of water, in a Greenhouse. This method provided over 4.000 offspring, which at 2 ½ years of age were of a size mitable for ornamental use.

Estudos sôbre a Alimentação Mineral do Abacaxí (Ananas sativus) Sch

Pineapple plants when grown in the greenhouse by the sand culture technique in order to study the effects of deficiencies of macronutrients in growth, yield, leaf and fruit composition, the main results were the following. As a result of the several treatments, yield decreased in the order: Complete Minus Mg Minus S Minus Ca Minus K; nitrogen and phosphorus deficiente plants did not bear fruit. Leaf analyses (see Table 5-1) showed that the ommission of given element from the nutrient solution always caused a decrease in its level in the green tissue. As seen in Table 5-2 the lack of macronutrients had certain effects on fruit composition: acidity increased in all cases excet in the minus Mg fruits; ash usually decreased reaching its lowest valued in fruits from the minus K plants; when compared to fruits picked in the "normal" plants, those lacking K showed a marked decrease both in brix and in total sugars as well; sulfur deficiency also brought a net reduction in the sugar content. Table 5-1. Levels of macronutrients found in pinapple leaves. Elements Treatment Percent of dry matter Nitrogen (N) Complete 1.29 Minus N 0.78 Phosphorus (P) Complete 0.12 Minus P .05 Potassium (K) Complete 2.28 Minus K 0.16 Calcium (Ca) Complete 1.19 Minus Ca 1.10 Magnesium (Mg) Complete 0.41 Minus Mg .29 Sulfur (S) Complete 1.00 Minus S .65 Table 5-2. Effects of macronutrients deficiency in yield and fruit characteristics. Treatment Ave. weight of Acidity As per Brix Total sugars fruits (gm) per cent cent per cent Complete 1.031 1.16 0.40 14.7 10.8 Minus N no fruit was produced Minus P no fruit was produced Minus K 246 1.44 0.26 11.9 8.3 Minus Ca 513 1.40 0.35 17.8 14.3 Minus Mg 957 0.97 0.38 15.4 13.0 Minus S 576 1.42 0.46 17.1 6.5

Studies of American plants, by Paul C. Standley.

v.4:no.8(1929)

Studies of Central American plants. by Paul C. Standley and Julian A. Steyermark.

v.23:no.3(1944)

New plants from British Honduras, by Paul C. Standley.

v.11:no.4(1932)

Studies of Central American plants. by Paul C. Standley and Julian A. Steyermark.

v.22:no.5(1940)

Studies of Central American plants. by Paul C. Standley and Julian A. Steyermark.

v.23:no.4(1944)

Useful plants and drugs of Iran and Iraq / by David Hooper. With notes by Henry Field.

v.9:no.3(1937)

Contributions to the flora of South America: Studies on Andean Compositae, I. Studies in South American plants, II.

v.27:no.1(1950)

Studies of American plants. by Paul C. Standley.

v.17:no.2(1937)