[x] More!
Well first off you increased productivity per tree, its an easy enough addition to make. Really the harder part is making sure no other major detriments of not work there way into the modified trees. Nature is such a finally tuned machine... ok countless years of human selective breeding is a tuned machine but its still one thats very easy to break either way, almost as easy to break as hopes or dreams in fact.
This combined with your additional tweaks for adaptability means that the company should be able to more than make up for the looses incurred because of Zerge attacks on the plantations.
Sadly your look into the nature of just why the Zerge has lemons doesn't produce fruit 'heh' you god find a rare chemical that when introduced to an Ultralisk causes spontaneous combustion to the point of not stopping until the beast is naught but a pile of ash... stills its obscure enough that you'd doubt an evil hive mind would pay any attention to it.
At least corporate is pleased with your work to the point of giving letting you choose your next project, the Zerge don't seem to know about the improved productivity of the remain plantations... well yet anyway so thats an issue thats not an immediate problem for now.
Still... what should you work on next?
[] Improving a Fruit Strain. (Choose from Lemons, Banana's, Blueberry's, or Watermelons)
[] Work on a new fruit strain... either one from earth or inventing a new one all together!
[] The companies security forces are having some trouble.... better improve there equipment.
[] Pest control is important... time to work on that!
[] A lot of machinery goes into harvesting and caring for the various fruit, that's a good place to start.