Weeds & grass in a strawberry bed
We have several terraced beds which are planted to strawberries. The last few years the strawberries have done poorly, no doubt due to the drought here as well as weed pressures. When originally planted several years back, the beds were weed free and mulched with newspaper and straw. They fared well against the weed invasion for a few years, but lately the weeds and grass (mostly smooth broome) are winning the battle.
Last year I weeded the beds rather well and they looked OK for a couple of months, but by the end of the season the grass had invaded again. No doubt a large part of the problem is the soil between the beds is in grass, which re-invades the weeded beds each year.
I am wondering what possible solutions to this endless cycle could be employed here. If I covered the grassy areas between the beds with landscape fabric before weeding, I think that would reduce the invading grasses; however this is not ideal on the sloped land (makes it hard to walk on that area). Any other ideas? How do commercial growers keep grass/weeds out of their strawberries?