Pests and Diseases

March 12, 2007

Uninvited Guests

Dscn0247 Now that the weather is warming up there are loads more snails and slugs appearing on the plot and for an organic gardener they can be a real pain to deal with. The ice and snow in winter normally kills a lot of the eggs that will have been brought to the surface by digging in autumn, but I'm a bit worried this year because it just doesn't seem to have been cold enough. I've got a terrible feeling that as it gets warmer I'm going to be absolutely swamped.

Both snails and slugs can be terribly destructive but I've got a real soft spot for snails and can't stand to kill them even if I find them munching through some prize produce. So what's my answer? My plot backs onto some woods so I just collect them all in a bucket as I find them and put them over the fence to fend for themselves. I have to admit that I'm not so fond of slugs but even they just get evicted rather than exterminated and, as they make a juicy snack for the toads and newts who inhabit my plot, I've got to leave a few hanging around to keep them happy.

I've come to accept that slugs and snails mean that there are some things that I just can't grow at the allotment. They love salad leaves so they've been shifted to the back garden where I can keep a closer eye on them - they're better closer to the kitchen anyway so that we can pick them when we want them and they're fresh as possible. Spinach is a no go as well and I tend not to plant anything straight into the ground but I've found that if plants are big enough and strong enough when they're put outside they can usually put up with a certain amount of nibbling.

February 07, 2007

Problem Parsnips

Parsnip_2 We've had real problems with parsnip canker this year - as illustrated in the rather "Prime Suspect" / forensic style picture. It's actually not as bad as it looks but it makes storing the parsnips impossible - you have to cut out the cankered area as soon as possible or it spreads throughout the root. Apart from that though, they're perfectly edible. It's just such a disappointment when you pull a seemingly perfect parsnip out of the ground and turn it round to see a monstrosity like this.

Canker is a fungi which gets into the crown when it is cracked or damaged by pests. Apparently it's most likely to occur in drought and highly fertile soil and this would make sense as it was so horribly dry last summer. In areas where canker is common it's recommended to use resistant cultivars or make later sowings. I'm going to try growing Turga again next year which is what I grew this year, as it looks such a lovely  parsnip, but I'm also going to try a shorter root as short rooted, smaller parsnips are supposed to be more resistant.

It seems quite common on my allotments that certain diseases are virtually impossible to avoid, especially where people haven't done any kind of crop rotation on their plot. I'm hoping that as we rotate our crops over the next couple of years it should start to reduce some of the nasties that are hanging around in the soil. Fingers crossed.