Rice/soybean no-till rotation
Feb 5, 2010 8:08 AM, By David Bennett, Farm Press Editorial Staff
For growers employing conservation-till/no-till systems, an exceptionally wet 2009 means much more field-prep work will be required going into 2010. Scott Matthews is undeterred, though — he’s a long-term user and believer in the systems.
Matthews farms in Arkansas’ Poinsett County, north of Weiner and south of Waldenburg, on a 50/50 rotation with rice and soybeans.
“How many people got the highest rainfall in 2009 they’ve ever had?” Matthews asked those attending the Jan. 12 Conservation Systems Cotton and Rice Conference in Tunica, Miss. Most hands in the room went up. “I was totally washed out. I have lots of decisions to make.
“Until the last couple of days it didn’t dawn on me — since I’ve been in a minimum-till system for so long — that I hadn’t pulled a disk in a long time. Well, after 2009, I’ll have to disk every acre of my ground. I know that hasn’t happened in 15 years and it may have been 20. That is a major headache.”
Matthews has been involved in no-tilling since 1983 when he worked in the chemical/fertilizer business. Even while not farming “I became familiar with it and when we began farming in 1990, I wanted to implement those practices.”
At first, it was hard to figure out, he admits. “I wanted to be safe — ‘I don’t want to jump out on a limb and a make big decision and find it’s all bad.’ So, in the beginning of our no-till experiment, I leaned towards planting later — much later than we do now. And that would work once but wouldn’t work in a system.”
Matthews — who said, to laughs, “Everything I tell you today is a suggestion and not a recommendation. I am not a doctor” — changed up and began planting earlier. Doing so, he found, provides a longer window not only in the spring but also in the fall.
“The one thing I needed to do right off the bat was plant early varieties. But I also knew I needed to harvest early. I was looking for only one extra day. With the combines we have now, I knew if I could harvest a day earlier that was a big deal.”
Looking for that extra day, Matthews began studying Arkansas DD50 charts and found the recommended drain date: Aug. 9.
“The first thing I figured was a comfort zone was built in. Immediately, that took me out of watering my rice during the hottest month. That saves fuel, pump maintenance, labor. And if my silt loam soils ever dry down, they can take a rain and still harvest without trashing the field too bad.
“The way we drain across my whole farm — rice and soybeans — is all PTO ditch. I’m a firm believer in them and use them over and over. Lots of times I won’t re-run them.
“But we take a High Crop 6420 and cut through the main ditches when we drain. The reason is so the field has every opportunity to get as dry as possible before a combine rolls in.”
At harvest — “and this is important” — Matthews is adamant about beginning his no-till program as soon as the combine is in the field. The goal is for every field to be ready to no-till within 48 hours after it is cut.
That’s overkill at some level, he admits. “But it also puts you in a good spot. It will be seven months before you have to plant the field in soybeans.
“The only thing I do to the field is come in with a dike cutter, make a down-and-back and leave just a hair of a crown. That’s right behind the combine.”
Matthews then sends in a 9.5-foot disk. The straw is very green and you can’t do much with it — “and I don’t want to do much with it. I run the disk to take that little bit of crown the cutter leaves. Mother Nature can smooth the clods out. But you want to work inside that dirt. Get outside it and you’ll make a mess, it’ll ball up and won’t work right.”
He also doesn’t typically re-run PTO ditches. However, “if I feel I’ve blocked some drains I’ll slip back in and do it. Like I said: the goal is to have every field ready to plant 48 hours after it’s cut.”
