Herbicides in Asparagus – A homegrown solution

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关于Jason Deveau(Spray_Guy)

Jason Deveau博士(@spray_guy)自08年以来一直是Omafra应用技术专家。他研究和教授改善农业喷雾剂在特种作物,田间作物和受控环境中的安全,有效和有效应用的方法。他是Sprayers101的共同管理员,Airblast10雷竞技app震中杯赞助商1教科书的合着者,慢速骑自行车的人和较慢的跑步者。雷竞技苹果app下载官方版

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In 2016, an asparagus grower in southern Ontario picked up a used De Cloet Hi-Boy originally used to spray tobacco. His vision was to create a three-row herbicide sprayer for asparagus and we were invited to participate. His concept was to design shrouds that would contain the herbicide, but not snag the asparagus or drag heavily on the ground. This article follows the development of the sprayer from concept to testing to final product.

The sprayer itself was a classic three-wheel, self-propelled affair.. The asparagus was planted on four foot centres, leaving a three foot alley. While the goal was to hang three shrouds off the boom, we started with one to work out the bugs.

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该操作使用2,4-D来控制小巷中的杂草,虽然稍微撞击了芦笋茎高达12英寸(分支开始的地方),但我们希望不惜一切代价避免接触。这使我们进入了Teejet AI 95°平面风扇喷嘴,该喷嘴产生了非常粗糙至极其粗糙的喷雾质量。可以将单个喷嘴悬挂起来,以跨越小巷的3英尺宽度。

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该裹尸布的第一个版本被悬挂在四个锚固点的繁荣中。允许使用一定数量的游戏,以便裹尸布会发现铅垂(即垂直悬挂),即使喷雾器ha臂偏斜或在不平坦的地面上倾斜。

裹尸布是由钣金构造的,呈倾斜,以减少与芦笋分支接触的潜力,并以僵硬的,尼龙刷子式的泥瓣终止,通常在卡车上看到。将这些刷子切成几英寸的长度,以跨越裹尸布侧面和地面之间的距离。这将创建一个“密封”,以防止喷雾逃脱,即使地面不平衡也保持接触。

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We tested the first version by placing water sensitive paper in two positions on the ground, just inside the reach of the brushes. We had to be careful not to run them over with the centre wheel of the sprayer. We also adhered two papers to the angled inner walls to see how much, if any, spray was hitting the inside of the shroud.

我们在6月16日的第一次通行证是在上午9:00,19.1ºC(66.4ºF),横风为5至7 km/h(3.1 - 4.3 mph)。相对湿度为85%,行进速度在3.2 km/h(2 mph)时慢。我们从50 psi的.06 AI尖端开始,但是由于我们行驶的速度如此慢,因此我们以过度覆盖范围浸湿了所有目标。我们还发现,刚性刷子在土壤中产生犁沟,如下所示。

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对于我们的第二次传球,我们尝试了.04尖端,并抬起裹尸布,同时放下尖端以使其在地面上悬挂15英寸。我们仍在浸透目标,并注意到裹尸布撞到了芦笋长矛,造成了物理损害。损坏如下所示 - 注意弯曲长矛上的深绿色。

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这导致决定耀斑的一面墙壁铁道部e aggressively, bringing them further into the centre of the alley and away from the spears (shown later in the article). This had the added benefit of angling the brushes as well to get a maximum span for weed control in the alley. For the final coverage pass we used the AI .03 tip, which gave more than 45% coverage on the ground, with even distribution, and there was no indication of spray on the papers adhered to the inside of the shroud. This coverage is more than is likely required, and the operator should be able to spray up to 6.5 km/h (4 mph) without compromising coverage.

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自从覆盖范围测试以来,种植者在现有的挡泥板上添加了其他钣金挡泥板,包围了车轮并为裹尸布创建平滑的过渡,以轻轻地偏转芦笋。需要挡泥板,因为种植者发现芦笋被轮挡泥板推出,只是在裹尸布前面反弹,从而抓住了蕨类植物并损坏了它。额外的挡泥板保持蕨类植物的蔓延,并防止它被笼罩在裹尸布前。

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种植者对喷雾器的性能非常满意,并计划建造另一个。种植的创造力没有尽头,因此在解决问题时掌握了您的创意方面。看看下面的图片:大多数人看到一只鸟,但是富有创造力的人可以看到跳滑的兔子。

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感谢Teejet向Lingwood Farms的Ray和Brad Vogel捐赠了喷嘴和水敏感纸,以邀请我参加。

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