SU1407432A1 - Method of controlling pill bugs in rosarium - Google Patents

Abstract

This invention relates to agriculture. The purpose of the invention is to increase the efficiency of the method. The treatment of the aerial parts of plants is carried out with a 0.4-0.6% solution of phenanthrolc in a mixture of ethanol, acetone, 0.1% Tween 80, and water in a ratio of 0.45: 0.45: 0.1: 9 by volume at the rate of 150 l of o-phenanthroline solution for each treatment of 1 ha. Spraying is carried out 1-2 times before the onset of the dark period, then a dark period of not less than 6 hours follows. A one-time treatment is sufficient if the illumination of the light period is equal to or above 12000 lux. At illumination below 12000 lx, it is necessary to make a double treatment with an interval between treatments of 1-4 days. 1 hp f-ly, 2 tab. &

Description

The invention relates to agriculture, in particular, to plant growing, and can be used in rose gardens to control moor-weed (Moss), Cepr,

The purpose of the invention is to increase the efficiency of the way of dealing with woodlice in rose gardens.

Example 1. Study of the development of photodynamic damage to woodlice plants.

The planting of roses littered with wood lice was sprayed with 0.02 and O, 1-0.6% solutions of o-phenanthroline at the rate of 150 l / ha and placed in the dark. A solution of o-phenanthroline in a mixture of ethanol, acetone, 0.1% tween 80, and water in a ratio of 0.45: 0.45:: 0.1: 9 (by volume) was used. After 12 h of the dark period, the plants were carried out into the light (12000 lux — the light intensity, which corresponds to the lowest illumination on a summer day) and controlled the development of the photodynamic effect during the subsequent keeping of plants in the following mode: 124 light — 12 h darkness, Plant appearance Woodlice treated with solutions of phenanthroline of different concentrations are described in Table 1. From Table 1 it can be seen that as the concentration of o-phenanthroline increases and the duration of the constrictor increases after the treatment of plants during the light period, an increase in the photodynamic damage of the wood lice is observed. The most pronounced effect, which occurred in the death of 90-98% of plants, was observed already 2 days after their treatment with 0.4-0.6% solutions of o-phenanthroline. After 4 days, 100% mortality of plants was observed in these variants. This study showed that a solution of o-phenanthroline with a concentration of 0.4–0.6% has an effect, since the use of a solution with a concentration below the specified one does not lead to a 100% mortality. weeds

To verify the dependence of the degree of pogrevy on woodlice on the duration of the dark period; Following the treatment of Oz4% s plants with a solution of o-phenanthroline, after the spraying the woodlouse was placed for 6, 8, 12, and 16 h in darkness, and then brought to light with an intensity of 12000 lux. The limits of the dark period of 6 and 16 h approximately correspond to the shortest

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0 5

five

and the longest night, i.e. possible natural darkening of plants,

With an increase in the duration of darkening, the rate of development of photodynamic damage to woodlice increases. Four days after the start of the illumination, 100% of the woodlice was observed in all cases. When the woodlouse darkens less than 6 hours, the development of the photodynamic effect is significantly slowed down and the weed does not die completely.

Example 2. Determination of the dependence of the degree of photodynamic I. OB-plants of woodlice on the intensity of illumination.

Rose plants littered with wood lice were treated with a 0.4% o-phenanthroline solution, after which they were placed in darkness for 12 hours and then brought to light with intensities of 100, 4000, and 12000 lux. The illuminances of 100, 4000, and 12000 lux simulate the conditions of natural light intensity in greenhouses on cloudy days in winter, spring, and summer, respectively. The data obtained are presented in table 2,

From Table 2 it can be seen that an increase in the intensity of illumination of plants that underwent treatment with o-phenanthroline significantly accelerates the development of photodynamic damage:; 1, En. Keeping a weed with an illumination of 12000 lux leads to a 90% mortality of plants already 2 days after their treatment with o-phenanthroline. At the same time, with an illumination of 100 lux, 80% of the plants die only 4 days after the beginning of the light period.

Full weed mortality at low light levels is achieved by spraying two insects with o-phenanthroline solution twice at a rate of 150 l / ha for each treatment with an interval of 1-4 days. It is not possible to use the interval between treatments for more than 4 days, as the woodlouse does not completely pop up (the woodlouse gives young growth that is covered by the drying top of the stem, and under such conditions the treatment with o-phenanthroline becomes ineffective,

The first and second processing of the woodlouse with o-phenanthroline solution should be carried out with a solution volume of at least 150 l / ha, since a decrease in the volume of o-phenanthroline solution does not lead to good contact of the plants with the solution of this substance and to the complete death of the woodlouse, 80% die. The weed slowly dries out and has time to give young shoots. It is not expedient to carry out treatment more than twice, as the woodlice is full after the second treatment at the lowest illumination.

Signs of photodynamic damage to the rose in both examples, except for a weakly pronounced narrow yellow edging, which appeared on two or three leaves, after treating the o-phenanth-

rolin was not observed. Rose bushes were observed for 6 months.

At the same time, no signs of inhibition of their growth were noted, developed or deteriorated in the external presentation.

Invention Formula

Claims (2)

1. A method of dealing with moss in rose gardens, including spraying plants with a herbicide, is different because, in order to improve the efficiency of the method, o-phenanthroline solution 0.4-0.6% is used as a herbicide. concentration at a consumption rate of 150 l / ha, and spraying is carried out before the onset of a dark period of not less than 6 hours. 2., The method according to claim 1, wherein there is a luster with the fact that during a subsequent light period after the dark period with an illumination below 12000 lux, the spraying is repeated after 1-4 days. Table 1 Leaf green. No damaged plants Necrotic spots of yellow color appeared on separate leaves. In 10% of the plants the leaves turned yellow. And dried. 70% of the plants began to leave the edges of the leaves In 30% of the plants the leaves turned yellow and dried, the upper part of the stem begins to dry. In 60% of the plants, leaves uv give and start to dry. 60% of the plants are completely dead. In 30% of the plants the leaves have dried, the stem begins to dry. 10% of plants begin to dry out leaves 90% of the plants are completely dead. 10% of the plants have dried leaves and the upper part of the stem 95% of the plants n. (Dead. 5% of the plants have dried leaves and the upper part of the stem. There are no intact plants Leaf green. No damaged plants In 10% of the plants, the leaves have yellow necrotic spots. In 20% of the plants, the leaves turned yellow and dried. In 80% of the plants, leaves uv give and start to dry. 50% of the plants turned yellow and dried leaves and stem. In 50% of the plants, leaves uv give and begin to dry. 80% rastago completely died. 20% of the plants have dried leaves and the stem begins to dry. 100% of the death of plants - dry yellow-green mass Also 98% of the plants are completely dead. In 2% of the plants the leaves and the upper part of the stem dried. No intact plants The edges of the leaves began to darken. 30% of the plants are completely dead. 50% of the plants have dried leaves and the upper part of the stem. 20% of plants remained intact 80% of the plants are completely dead. The first traces of photodynamic damage appeared in 20% of the plants (the edges of the leaves became brown) 80% of the plants are completely dead. In 20% of the plants, the picture of photodamage intensified (the edges of the leaves began to turn yellow and shrivel). Continuation of table 1 Table 2 Young leaves curled and dried 90% of the plants are completely dead. In 10% of the plants the leaves and the upper part of the stem dried. No intact plants 95% of the plants are completely dead. In 5% of the plants the leaves and the upper part of the stem dried 100% of the death of plants - dry yellow-green mass