Similarly bajra, Javi oats etc and related food for millions as well as for live stock and industrial essential very essential input grow on sandy soil with water being critical here also the reply is not water but something which probably humanity has not even thought till date. 

Have you ever wondered pea nuts the most staple food and dish of millions is not a root at all but the pods develop only under soil the soft one, is it water of soil for this secret the reply again is not. 

You might have pondered why rice is grown in water, seed with normal shower whilst the seedlings/saplings in deep water say of 2-3 inches height and on continuous basis but rice does not die at all rather grow s very fast what could be the reason whether water the reply is no. Here also its something else. 

have you seen a lush green lawn and certain patches of water logged one that makes grass simply die hardly within 24-48 hrs of water logging. What could be the reason. Water or something else. Reply is its not water its something else. 

similarly why a shoot / small sprout go against geo magnetism whilst the root sprout goes toward s the geo magnetism if translated into gene language will give the secret of making hitherto nucleotide s  accept each other and new genome shall be sustainable in F2 gen. 

Have you ever noticed domestic pot of a plant eg chrism as tree even after a short while down side triggers a hormone threshold that tell s the plant system to grow against geo magnetism as its the straight in gene language of this plant and others as well. Similarly zero geo magnetism triggers the somatic union of chromosome s that are hitherto simply incompatible to grow or pair together etc. Its broad way of understanding but actual process is complex as it involves isolation of nucleotide s to combine etc to further make a sustainable sequence as in big trees there are huge number of chromosomes that also can be studied in space to know their gene behaviour and copy it in gene cloning etc.  

there is a gene in bacteria that is marked by its virulent reproduction. This can be cloned in space lab with chara and other oxygen making plants to alleviate rivers ponds etc of its affluence.