Posted: 27/03/2014 at 22:04
FB is right, I wouldn't use glyphosate or any other weed killer at this time of year if I wanted to get on with some planting this season. Potatoes are a good crop to begin with as they will clear the ground and you will get some results. You can then plan what to grow afterwards.
Start as FB says and dig the ground over removing as many roots of grass and weeds as you can. Pay close attention to dandelion roots if you have them and try to remove the whole root as any piece left in the ground will throw up a fresh plant. Incorporate some organic matter into the soil if you do grow potatoes as this will help prevent scab. Organic matter can be as simple as grass mowings (providing you haven't treated the grass recently with weed killers), or some composted manure - but be careful about using stable manure if you have horse stables nearby because horses eat weeds as well as grass and the seeds get a perfect supply of fertiliser when they come out of the other end of the horse!!!
You could then sow some cabbage seeds to have some spring cabbages ready to put in after the potatoes are harvested (or buy some plants later on in the season from a garden centre). Runner beans are also a great favourite with me and I sow a variety called Moonlight which are self fertile and extremely prolific. Runner beans though will need some compost that holds plenty of water under them - dig a trench and backfill with the compost then put about 4"-6" of soil over the top and sow the seeds in late May / early June amount 2" deep, then place some canes beside each seed station for the plants to climb up - you'll probably see other allotment holders growing runner beans and can copy what they do. Hope this helps. John H