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Method by utilizing 2, 4-D butyl ester to control perennial weeds in soybean field

A technology of butyl ester and broad-leaved weeds, applied in 2 fields, can solve problems such as volatile drift, control problems, difficult soybean planting, etc., and achieve the effect of low price

Inactive Publication Date: 2012-07-04
NORTHEAST AGRICULTURAL UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

There are also some problems in the use of 2,4-D butyl ester. For example, 2,4-D butyl ester is extremely volatile and drifts, and it is easy to cause phytotoxicity to surrounding sensitive crops after application.
However, limited by economic benefits, regional climate and other factors, it is often impossible to rotate grass crops
It can be seen that the prevention and control of perennial weeds in soybean fields has always been a problem that plagues soybean cultivation.

Method used

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  • Method by utilizing 2, 4-D butyl ester to control perennial weeds in soybean field
  • Method by utilizing 2, 4-D butyl ester to control perennial weeds in soybean field
  • Method by utilizing 2, 4-D butyl ester to control perennial weeds in soybean field

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] Example 1. Outdoor pot experiment of using 2,4-D butyl ester to control perennial weeds in soybean fields

[0021] The pickle (Sonchus brachyotus DC.) was collected in the soybean field around Harbin, Heilongjiang Province, and the experimental location was on the campus of Northeast Agricultural University in Harbin, Heilongjiang Province. The experiment was grown under natural outdoor conditions, and the water and fertilizer conditions were the same as those in the soybean field; the growth and development of the experiment was consistent with that of the grown in the soybean field.

[0022] In the experiment of this embodiment, from the time of soybean harvest on September 28 to before planting in early May of the following year, the time when the outdoor daily average temperature is lower than -10°C is 90 days.

[0023] In actual production, the harvest of soybeans is done by machines or manually. After harvest, the aboveground parts of plants including soybeans and weeds ...

Embodiment 2

[0035] Example 2. Field test of using 2,4-D butyl ester to control perennial weeds in soybean fields

[0036] The field test site was Hailin City, Mudanjiang, Heilongjiang Province. The pesticide was applied on September 14, 2009, and the soybeans in the field were between R7 and R8 at the time of pesticide application; the broccoli was between the vegetative growth period and the flowering period, and the leaves were still green. The field density of stubble is about 12 plants / m 2 about. The dosage of 2,4-D butyl ester is: 540g a.i. / hm 2 , 648g a.i. / hm 2 , 756g a.i. / hm 2 , 864g a.i. / hm 2 , 1296g a.i. / hm 2 , At the same time, a clean water control (ck) was set up, a total of 6 treatments, a random block design, 3 repetitions. The plot area is 63m 2 (9 ridges×10m×0.7m). Soybeans were harvested on September 26. The experimental fields were not plowed in the autumn of that year, and no cultivation measures were taken the following year. On May 20 of the following year, a 5-point...

Embodiment 3

[0040] Example 3. Using 2,4-D Butyl Ester to Control the Effect of Perennial Weeds in Soybean Fields on Soybean Yield

[0041] The experiment was completed in the soybean field of the experimental practice base of Northeast Agricultural University in 2009. The plot area is 70m 2 (10 rows×0.7m×10m), leave 4 ridges of soybeans on the left and right sides of each plot as protection rows, the actual application area is 42m 2 (6 rows×0.7m×10m), leaving 1m plots between the plots. The experiment has 2 application periods: soybean R7 period (September 8th), soybean R8 period (September 18th), the dosage of 2,4-D butyl ester is 540g a.i. / hm 2 , 648g a.i. / hm 2 , 756g a.i. / hm 2 , 864g a.i. / hm 2 , 1296g a.i. / hm 2 , With spraying water control, a total of 11 treatments, 4 repetitions, random block design. On September 28, harvest the 4 rows of soybeans in the middle of each plot for threshing, weigh the 100-seed weight and calculate the yield. The results are shown in Table 3. The test res...

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Abstract

The invention discloses a method by utilizing 2, 4-D butyl ester to control perennial weeds in a soybean field, which comprises the following steps that: after harvesting organs of crops such as soybean and the like enter a maturity period and before the harvesting organs of the crops such as the soybean and the like are harvested, weedicide is applied on the ground part of all plants including the crops and the perennial broad-leaf weeds in the crop planting field to control the perennial broad-leaf weeds in the planting field; and the weedicide is phenoxy carboxylic acid-type weedicide or phenylformic acid-type weedicide. By utilizing the method to spray 2, 4-D butyl ester about 1296 a.i. / hm<2>, underground roots of sowthistle can be completely killed, no influence is produced on the yield of the broad-leaf crops such as the soybean and the like, no chemical harm is produced on the peripheral sensitive crops, and the weeding cost is low. Due to the adoption of the method, the problem that the perennial broad-leaf weeds such as the sowthistle, field thistle, setose thistle and the like in the broad-leaf crop fields such as the soybean field and the like are difficult to control can be solved. The method also can be used for controlling the perennial broad-leaf weeds in gramineous crop fields.

Description

Technical field [0001] The invention relates to a method for 2,4-D butyl ester to control perennial weeds in soybean fields. Background technique [0002] 2,4-D butyl ester (butyl 2,4-dichlorophenoxyacetate) is a phenoxycarboxylic acid selective herbicide, which can conduct bidirectional conduction through the phloem and xylem in plants. 2,4-D Butyl ester can be used to control broad-leaved weeds, but is not effective to grass weeds. It can only be used as soil treatment in broad-leaved crop fields such as soybeans, and it can be used as a stem in wheat, corn and other grass crop fields. Leaf treatment can also be used as soil treatment. In the control of farmland weeds, the cost of weed control of 2,4-D butyl ester is very low, and it is widely used in the chemical control of farmland weeds at home and abroad. There are also some problems in the use of 2,4-D butyl ester. For example, 2,4-D butyl ester is very volatile and drifts, and it is easy to cause phytotoxicity to surrou...

Claims

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Application Information

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IPC IPC(8): A01N39/04A01P13/02
Inventor 何付丽赵长山刘亚光
Owner NORTHEAST AGRICULTURAL UNIVERSITY
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