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Marijuana Botany by Robert Connel Clark
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<blockquote data-quote="cannebosanac" data-source="post: 20022" data-attributes="member: 1357"><p>poglavlje 2 nastavak</p><p></p><p>Auxin produced in the tip meristem travels down the </p><p>stem and inhibits branching. When the meristem is re- </p><p>moved, the auxin is no longer produced and branching may </p><p>proceed uninhibited. Plants that are normally very tall and </p><p>stringy can be kept short and bushy by meristem pruning. </p><p>Removing meristems also removes the newly formed tissues </p><p>near the meristem that react to changing environmental </p><p>stimuli and induce flowering. Pruning during the early part </p><p>of the growth cycle will have little effect on flowering, but </p><p>plants that are pruned late in life, supposedly to promote </p><p>branching and floral growth, will often flower late or fail </p><p>to flower at all. This happens because the meristemic </p><p>tissue responsible for sensing change has been removed and </p><p>the plant does not measure that it is the time of the year </p><p>to flower. Plants will usually mature fastest if they are </p><p>allowed to grow and develop without interference from </p><p>pruning. If late maturation of Cannabis is desired, then </p><p>extensive pruning may work to delay flowering. This is </p><p>particularly applicable if a staminate plant from an early- </p><p>maturing strain is needed to pollinate a late-maturing pistil- </p><p>late plant. The staminate plant is kept immature until the </p><p>pistillate plant is mature and ready to be pollinated. When </p><p>the pistillate plant is receptive, the staminate plant is </p><p>allowed to develop flowers and release pollen. </p><p>Other techniques are available for limiting the size and </p><p>shape of a developing Cannabis plant without removing </p><p>meristematic tissues. Trellising is a common form of modi- </p><p>fication and is achieved in several ways. In many cases </p><p>space is available only along a fence or garden row. Posts 1 </p><p>to 2 meters (3 to 6 feet) long may be driven into the </p><p>ground 1 to 3 meters (3 to 10 feet) apart and wires </p><p>stretched between them at 30 to 45 centimeters (12 to 18 </p><p>inches) intervals, much like a wire fence or grape trellis. </p><p>Trellises are ideally oriented on an east-west axis for maxi- </p><p>mum sun exposure. Seedlings or pistillate clones are placed </p><p>between the posts, and as they grow they are gradually </p><p>bent and attached to the wire. The plant continues to grow </p><p>upward at the stem tips, but the limbs are trained to grow </p><p>horizontally. They are spaced evenly along the wires by </p><p>hooking the upturned tips under the wire when they are 15 </p><p>to 30 centimeters (6 to 12 inches) long. The plant grows </p><p>and spreads for some distance, but it is never allowed to </p><p>grow higher than the top row of wire. When the plant be- </p><p>gins to flower, the floral clusters are allowed to grow up- </p><p>ward in a row from the wire where they receive maximum </p><p>sun exposure. The floral clusters are supported by the wire </p><p>above them, and they are resistant to weather damage. </p><p>Many cultivators feel that trellised plants, with increased </p><p>sun exposure and meristems intact, produce a higher </p><p>yield than freestanding unpruned or pruned plants. Other </p><p>growers feel that any interference with natural growth </p><p>patterns limits the ultimate size and yield of the plant.</p></blockquote><p></p>
[QUOTE="cannebosanac, post: 20022, member: 1357"] poglavlje 2 nastavak Auxin produced in the tip meristem travels down the stem and inhibits branching. When the meristem is re- moved, the auxin is no longer produced and branching may proceed uninhibited. Plants that are normally very tall and stringy can be kept short and bushy by meristem pruning. Removing meristems also removes the newly formed tissues near the meristem that react to changing environmental stimuli and induce flowering. Pruning during the early part of the growth cycle will have little effect on flowering, but plants that are pruned late in life, supposedly to promote branching and floral growth, will often flower late or fail to flower at all. This happens because the meristemic tissue responsible for sensing change has been removed and the plant does not measure that it is the time of the year to flower. Plants will usually mature fastest if they are allowed to grow and develop without interference from pruning. If late maturation of Cannabis is desired, then extensive pruning may work to delay flowering. This is particularly applicable if a staminate plant from an early- maturing strain is needed to pollinate a late-maturing pistil- late plant. The staminate plant is kept immature until the pistillate plant is mature and ready to be pollinated. When the pistillate plant is receptive, the staminate plant is allowed to develop flowers and release pollen. Other techniques are available for limiting the size and shape of a developing Cannabis plant without removing meristematic tissues. Trellising is a common form of modi- fication and is achieved in several ways. In many cases space is available only along a fence or garden row. Posts 1 to 2 meters (3 to 6 feet) long may be driven into the ground 1 to 3 meters (3 to 10 feet) apart and wires stretched between them at 30 to 45 centimeters (12 to 18 inches) intervals, much like a wire fence or grape trellis. Trellises are ideally oriented on an east-west axis for maxi- mum sun exposure. Seedlings or pistillate clones are placed between the posts, and as they grow they are gradually bent and attached to the wire. The plant continues to grow upward at the stem tips, but the limbs are trained to grow horizontally. They are spaced evenly along the wires by hooking the upturned tips under the wire when they are 15 to 30 centimeters (6 to 12 inches) long. The plant grows and spreads for some distance, but it is never allowed to grow higher than the top row of wire. When the plant be- gins to flower, the floral clusters are allowed to grow up- ward in a row from the wire where they receive maximum sun exposure. The floral clusters are supported by the wire above them, and they are resistant to weather damage. Many cultivators feel that trellised plants, with increased sun exposure and meristems intact, produce a higher yield than freestanding unpruned or pruned plants. Other growers feel that any interference with natural growth patterns limits the ultimate size and yield of the plant. [/QUOTE]
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Marijuana Botany by Robert Connel Clark
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