Colorado Potato Beetle Control on Potatoes with in-Furrow Treatments, 1992

J. Linduska, Marylee Ross, R. Rouse
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Abstract

Red Norland" potatoes were planted in 25 foot rows on 18 May 92. Plots consisted of a single row treatment. The distance between rows was 72 inches and the distance between plants within the row was 9 inches. The plots were arranged in a randomized complete block design with 4 replications. The soil was a Norfolk “A” loamy sand. Granular treatments were applied with a small shaker can over top the seed pieces in the furrow. In furrow H20 treatments were applied to the seed at the rate of 20 gal/acre with a 2 gal sprinkle can. Initial treatments were applied at planting with foliar spray treatments of Furadan when necessary. Sprays were applied 18 Jun; 3 and 4 Jul. In evaluating the treatments, direct counts of the number of adults, larvae and egg masses/10 plants and the % defoliation were recorded. Defoliation categories were assigned using a pretransformed defoliation rating scale, based on dividing 90° into 13 steps corresponding to arcsin transformation values (Little & Hills 1978). Yields were taken on 3 Aug from 25-ft row.
马铃薯槽内处理对马铃薯甲虫的控制,1992
1992年5月18日,“红诺兰”土豆排成25英尺的行列种植。地块由单行处理组成。行间距为72英寸,行内植株间距为9英寸。试验区采用完全随机区组设计,每组4个重复。土壤是诺福克“a”型的壤土。用一个小摇壶在犁沟中的种子片上施用颗粒处理。在犁沟中,用2加仑的洒罐以20加仑/英亩的速度对种子施用水处理。栽植时施用初期处理,必要时叶面喷施呋喃丹。6月18日使用喷雾;7月3日和4日在评价处理时,记录成虫数、幼虫数、卵块数/10株和落叶率。基于将90°划分为对应于arcsin变换值的13个步骤(Little & Hills 1978),使用预变换后的落叶评级量表分配落叶类别。8月3日,从25英尺的农田开始获得了收益。
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