Grass herbs

Fig. 6.3 Conceptual drawing of the distribution of different groups of herbaceous plants in relation to major plant nutrients. Cycles represent the distribution of grasses, herbs, and legumes. Species with mycorrhiza are able to exploit sites low in both nitrogen (N) and phosphorus (P). Highly productive species, such as ruderal plants, need conditions abundant in N and P. 

Duke, J.A. Handbook of Phytochemical Constituents of Grass, Herbs, and Other Economic Plants (Boca Raton. FL CRC Press, 1992). 

Acapulco gold, Colombian, dagga, dank, dcwbie, ganja, grass, herb, J, joint, kif, maryjane, pot, reefer, rope, spliff, sinsemilla, smoke, tea, etc. 

And the earth brought forth grass, herb yielding seed after its kind and tree bearing fruit, wherein is the seed thereof, after its kind and God saw that it was good. And there was evening and there was morning, a third day. 

Most of the carbon taken in by plants during photosynthesis is in the form of carbon-12, which is not radioactive. However, a small amoimt of radioactive carbon-14 (half-life = 5,730 y) is produced in the upper atmosphere as a result of cosmic rays interacting with atmospheric gases. The carbon-14 atoms that result are incorporated into atmospheric CO, which we can denote as "CO. When COj is taken in by plants during photosynthesis, the glucose that is produced contains carbon-14. During the Ufetime of a plant—grass, herb, bush, or tree—the ratio C/ C becomes a relatively constant quantity. 

Cannabis is often detected in the blood of drivers and is considered the major cause of road crashes after alcohol. It is often implicated in forensic cases and workplace accidents. A -tetrahydrocannabinol (THC) is the major psychoactive constituent of Cannabis sativa, whose main metabolites formed in blood are 1 l-nor-9-carboxy-A -tetrahydrocannabinol (THC-COOH) and ll-hydroxy-A -tetrahydrocannabinol (THC-OH). Marijuana (also ganja, grass, herb, Mary Jane, pot, green, trees, smoke, sinsemilla, and weed) and hashish (or boom, gangster, hash, hemp) are made up of dried parts of the Cannabis sativa hemp plant they give euphoria and relaxation but also slowed reaction times, impaired coordination, anxiety, panic attack, and psychosis and cause respiratory infections, mental health decline, and addiction. 

Parts Birch leaves 20 Parts Couch-grass root 20 Parts Early golden-rod herb 20 Parts Restharrow root 20 Parts Liquorice... 

Ground covers in banana plantations are favorable for retention of moisture. A desirable ground cover consists of broad-leafed plants, but grasses predominate in many areas. Chemical control of grasses is not favored because banana plants are sensitive to chemicals, so the areas are hand chopped at frequent intervals. The banana plant is a rapid growing, highly succulent, perennial herb that is easily damaged with as little as 7.5 pounds of CMU [3-(p-chlorophenyl)-l,l-dimethylurea] per acre applied in a semicircular strip within 2 feet of the plant. This plant is sensitive to 2,4-D and can be injured by low concentrations. 

Grieve, M., and C. E. Leyel. A modem herbal. The medicinal, culinary, cosmetic and economic properties, cultivation and folk-lore of herbs, grasses, fungi, shrubs and trees with all their modem scientific uses, 1931. 

Extrafloral nectaries (Fig. 2.1) are probably the most frequently described adaptations believed to serve as indirect defenses. They have been described in approximately 1000 species from 93 plant families including numerous dicotyledonous species, ferns, and such diverse monocotyledonous taxa as lilies, orchids, sedges, and grasses (Koptur, 1992). They are found in virtually all plant types including herbs, vines, shrubs and trees, annuals as well as perennials, and successional as well as climax species. 

Table 10.4 LFERs Relating Air-Plant Partition Coefficients, K,ap, and Air-Octanol Partition Constants, Kiao, of PCBs for Various Herbs and Grasses at 25°C.(A, aP values are in kg dry weight-L"1.)a...

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