By K.P. Prabhakaran Nair
Often called the "King" of spices, black pepper (Piper nigrum L.) and the "Queen" of spices, cardamom (Elettaria cardamomum M.), either perennial plants of the tropics, are an important and most generally wanted spice plants of the realm. They either have many makes use of, for instance, either are used as flavourings and as a drugs. This ebook presents a complete evaluate of those vitally important spice vegetation, covering beginning, background, geographical distribution, creation, financial system and their makes use of. Discusses the 2 significant spices of significant financial price to the constructing global. the writer is an eminent scientist who has gained a variety of awards for his paintings during this area. Read more...
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Extra info for Agronomy and economy of black pepper and cardamom
This has been proved experimentally for phosphorus (Nair, 1992; Nair and Mengel, 1984). , 1997), and NH+ 4 − N as well (Mengel, 1985). 4 Background Information on the Importance of Measuring Zinc Buffer Power There is a great paucity of published material on the effect of buffer power on availability of heavy metals. Plants obtain most of their fertilizer zinc from reaction products and not applied sources as such, implying that any source of zinc added to soil has to necessarily conform to a chain reaction involving adsorptive, desorptive, and resorptive processes that govern the maintenance of an equilibrium between adequate zinc concentration in the soil solution nearest to the zone of zinc depletion on the one hand and plant uptake on the other.
The application of burnt ash has many beneficial effects in improving the physical, chemical, and biological properties of soil. Compared to the acidic soil, having a pH of 4–5, the burnt earth has a pH of 7–8 and acts as a good soil ameliorant in correcting pH. There is extensive literature on this method (Bergman, 1940; De Waard, 1969; Harden and White, 1934; Huitema, 1941). Owing to environmental hazards, especially because of large-scale burning and the emission of smoke, the Government of Sarawak banned the practice in 1940.
Nevertheless, pepper plants can seriously suffer due to moisture stress in the summer months, especially in India, when daytime temperatures in April and May can soar to 35 °C or higher. , 1997). An interesting aspect of pepper cultivation is the possibility of growing other crops, in addition to pepper, in the same field or plot of land. This practice is more in common when it is the case of homestead farming, where income from the accompanying crop adds to the profit from the main pepper crop.