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<blockquote data-quote="Soya UK" data-source="post: 7434686" data-attributes="member: 41712"><p>Been tried, but the "success" was debatable. The soya grew well enough, and managed to break through the biodegradable plastic OK. Also, the plastic helped to stop the pigeons and stopped the seedbeds drying out by sweating plenty of moisture up. The downside was the extra wheelings required to lay the plastic in beds. The modified drill / plastic laying machine, was laying beds that were about 1.5 metres wide, and then we had a set of wheelings. The extra wheelings cancelled out any extra benefit that we gained from the plastic, so we ended up with the same yield, but £100 per acre poorer due to the cost of the plastic. </p><p></p><p>The other issue is that soya physiology isn't that easy to hoodwink. Excessive heat /light early on, can cause the plant to start flowering early (no bad thing you might think), but it also can lead to crops being inordinately short. Annoyingly, it does not necessarily lead to earlier harvest as it might do in maize, since the soya flowering is regulated by photoperiod as well as growth stage. </p><p></p><p>The long & the short of it was that we decided that whilst keeping the pigeons off and keeping the seedbeds moist was very desireable, growing soya under plastic was not going to work at all. We concluded that the way forward is to breed varieties which are early enough and high yielding enough to offer a realistic gross margin whilst being drilled with conventional seed drills.</p></blockquote><p></p>
[QUOTE="Soya UK, post: 7434686, member: 41712"] Been tried, but the "success" was debatable. The soya grew well enough, and managed to break through the biodegradable plastic OK. Also, the plastic helped to stop the pigeons and stopped the seedbeds drying out by sweating plenty of moisture up. The downside was the extra wheelings required to lay the plastic in beds. The modified drill / plastic laying machine, was laying beds that were about 1.5 metres wide, and then we had a set of wheelings. The extra wheelings cancelled out any extra benefit that we gained from the plastic, so we ended up with the same yield, but £100 per acre poorer due to the cost of the plastic. The other issue is that soya physiology isn't that easy to hoodwink. Excessive heat /light early on, can cause the plant to start flowering early (no bad thing you might think), but it also can lead to crops being inordinately short. Annoyingly, it does not necessarily lead to earlier harvest as it might do in maize, since the soya flowering is regulated by photoperiod as well as growth stage. The long & the short of it was that we decided that whilst keeping the pigeons off and keeping the seedbeds moist was very desireable, growing soya under plastic was not going to work at all. We concluded that the way forward is to breed varieties which are early enough and high yielding enough to offer a realistic gross margin whilst being drilled with conventional seed drills. [/QUOTE]
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