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.A reasonable theory is that a light-sensitive pigment in the plant (possibly phytochrome) acts as a switch, causingthe plant to follow the flowering cycle.THC production is probably associatedwith the induction of flowering resulting from the photoperiod change.Cool night temperatures seem to promote flowering in plants that have previouslydifferentiated sexually.Extended cold periods, however, cause metabolicprocesses to slow and maturation to cease.Most temperate Cannabis strains aresensitive to many of the signs of an approaching fall season and respond bybeginning to flower.In contrast, strains from tropical areas, such as Thailand,often seem unresponsive to any signs of fall and never speed up development.Contrary to popular thought, planting Cannabis strains later in the season intemperate latitudes may actually promote earlier flowering.Most cultivatorsbelieve that planting early gives the plant plenty of time to flower and it will finishearlier.This is often not true.Seedlings started in February or March grow for 4-5months of increasing photoperiod before the days begin to get shorter followingthe solstice in June.Huge vegetative plants grow and may form floral inhibitorsduring the months of long photo-period.When the days begin to get shorter,these older plants may be reluctant to flower because of the floral inhibitorsformed in the pre-floral leaves.Since floral cluster formation takes 6-10 weeks,the initial delay in flowering could push the harvest date into November orDecember.Cannabis started during the short days of December or January willoften differentiate sex by March or April.Usually these plants form few floralclusters and rejuvenate for the long season ahead.No increased potency hasbeen noticed in old rejuvenated plants.Plants started in late June or early July,after the summer solstice, are exposed only to days of decreasing photoperiod.When old enough they begin flowering immediately, possibly because theyhaven t built up as many long-day floral inhibitors.They begin the 6-10 weekfloral period with plenty of time to finish during the warmer days of October.These later plantings yield smaller plants because they have a shorter vegetativecycle.This may prove an advantage.in greenhouse research, where it iscommon for plants to grow far too large for easy handling before they begin to flower.Late plantings after the summer solstice receive short inductivephotoperiods almost immediately.However, flowering is delayed into Septembersince the plant must grow before it is old enough to flower.Although flowering isdelayed, the small plants rapidly produce copious quantities of flowers in a finaleffort to reproduce.Extremes in nutrient concentrations are considered influential in both the sexdetermination and floral development of Cannabis.High nitrogen levels in the soilduring the seedling stage seem to favor pistillate plants, but high nitrogen levelsduring flowering often result in delayed maturation and excessive leafing in thefloral clusters.Phosphorus and potassium are both vital to the floral maturation ofCannabis.High-phosphorus fertilizers known as "bloom boosters" are available,and these have been shown to accelerate flowering in some plants.However,Cannabis plants are easily burned with high phosphorus fertilizers since they areusually very acidic.A safer method for the plant is the use of natural phosphorussources, such as colloidal phosphate, rock phosphate, or bone meal; these tendto cause less shock in the maturing plant.They are a source of phosphorus thatis readily available as well as long-term in effect.Chemical fertilizers sometimesproduce floral clusters with a metallic, salty flavor.Extremes in nutrient levelsusually affect the growth of the entire plant in an adverse way.Hormones, such as gibberellic acid, ethylene, cytokinins and auxins, are readilyavailable and can produce some strange effects.They can stimulate flowering insome cases, but they also stimulate sex reversal.Plant physiology is not simple,and results are usually unpredictable.Harvesting, Drying, and CuringCannabis is cultivated for the harvest of several different commercial products.Pulp, fiber, seed, drugs, and resin are produced from various parts of theCannabis plant.The methods of harvesting, drying, curing, and storing variousplant parts are determined by the intended use of the plant.Pulp is made fromthe leaves of juvenile plants and from waste products of fiber and drugproduction.Fibers are produced from the stems of the Cannabis plant.The floralclusters are responsible for the production of seeds, drugs, and aromatic resins [ Pobierz całość w formacie PDF ]
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.A reasonable theory is that a light-sensitive pigment in the plant (possibly phytochrome) acts as a switch, causingthe plant to follow the flowering cycle.THC production is probably associatedwith the induction of flowering resulting from the photoperiod change.Cool night temperatures seem to promote flowering in plants that have previouslydifferentiated sexually.Extended cold periods, however, cause metabolicprocesses to slow and maturation to cease.Most temperate Cannabis strains aresensitive to many of the signs of an approaching fall season and respond bybeginning to flower.In contrast, strains from tropical areas, such as Thailand,often seem unresponsive to any signs of fall and never speed up development.Contrary to popular thought, planting Cannabis strains later in the season intemperate latitudes may actually promote earlier flowering.Most cultivatorsbelieve that planting early gives the plant plenty of time to flower and it will finishearlier.This is often not true.Seedlings started in February or March grow for 4-5months of increasing photoperiod before the days begin to get shorter followingthe solstice in June.Huge vegetative plants grow and may form floral inhibitorsduring the months of long photo-period.When the days begin to get shorter,these older plants may be reluctant to flower because of the floral inhibitorsformed in the pre-floral leaves.Since floral cluster formation takes 6-10 weeks,the initial delay in flowering could push the harvest date into November orDecember.Cannabis started during the short days of December or January willoften differentiate sex by March or April.Usually these plants form few floralclusters and rejuvenate for the long season ahead.No increased potency hasbeen noticed in old rejuvenated plants.Plants started in late June or early July,after the summer solstice, are exposed only to days of decreasing photoperiod.When old enough they begin flowering immediately, possibly because theyhaven t built up as many long-day floral inhibitors.They begin the 6-10 weekfloral period with plenty of time to finish during the warmer days of October.These later plantings yield smaller plants because they have a shorter vegetativecycle.This may prove an advantage.in greenhouse research, where it iscommon for plants to grow far too large for easy handling before they begin to flower.Late plantings after the summer solstice receive short inductivephotoperiods almost immediately.However, flowering is delayed into Septembersince the plant must grow before it is old enough to flower.Although flowering isdelayed, the small plants rapidly produce copious quantities of flowers in a finaleffort to reproduce.Extremes in nutrient concentrations are considered influential in both the sexdetermination and floral development of Cannabis.High nitrogen levels in the soilduring the seedling stage seem to favor pistillate plants, but high nitrogen levelsduring flowering often result in delayed maturation and excessive leafing in thefloral clusters.Phosphorus and potassium are both vital to the floral maturation ofCannabis.High-phosphorus fertilizers known as "bloom boosters" are available,and these have been shown to accelerate flowering in some plants.However,Cannabis plants are easily burned with high phosphorus fertilizers since they areusually very acidic.A safer method for the plant is the use of natural phosphorussources, such as colloidal phosphate, rock phosphate, or bone meal; these tendto cause less shock in the maturing plant.They are a source of phosphorus thatis readily available as well as long-term in effect.Chemical fertilizers sometimesproduce floral clusters with a metallic, salty flavor.Extremes in nutrient levelsusually affect the growth of the entire plant in an adverse way.Hormones, such as gibberellic acid, ethylene, cytokinins and auxins, are readilyavailable and can produce some strange effects.They can stimulate flowering insome cases, but they also stimulate sex reversal.Plant physiology is not simple,and results are usually unpredictable.Harvesting, Drying, and CuringCannabis is cultivated for the harvest of several different commercial products.Pulp, fiber, seed, drugs, and resin are produced from various parts of theCannabis plant.The methods of harvesting, drying, curing, and storing variousplant parts are determined by the intended use of the plant.Pulp is made fromthe leaves of juvenile plants and from waste products of fiber and drugproduction.Fibers are produced from the stems of the Cannabis plant.The floralclusters are responsible for the production of seeds, drugs, and aromatic resins [ Pobierz całość w formacie PDF ]