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Why do young bolls on the middle and upper parts of the cotton plant crack open prematurely?
Recently, some farmers called to report a strange phenomenon in cotton production: the large bolls and early-developing bolls on the lower part of the plant were growing normally and had not yet opened, while the tender bolls on the middle and upper parts cracked open prematurely, and some of the cracked bolls then rotted. The Wuqiao County Agriculture Bureau immediately organized technical personnel to go into the fields to find the cause. 1. Field symptoms: In early-sown cotton fields where the top 1-3 fruiting branches had no buds or bolls, or very few buds and bolls, due to rain or pest and disease damage, the number of cracked bolls on the middle and upper parts was relatively high, that is, the outer bolls on the 7th-8th fruiting branches counting from the bottom and the inner bolls on the 9th-10th
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Stem Cell Research Opens a Second Front for the Cloning Sheep Technology Route
The Leap from Sheep to Monkey Without the two papers published on November 20, Shoukhrat Mitalipov would have been the most watched stem cell research scientist during this period. On November 14, this scientist at the Oregon National Primate Research Center in the United States published a paper in Nature, announcing that he had successfully obtained cloned rhesus monkey embryos. This was the first time scientists had cloned viable
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Cotton struggling to open its bolls? Reforming the planting method is key
In recent years, with the continuous deepening of the breeding of new cotton varieties and the improvement of sowing and seedling-raising methods, as well as the increase in the degree of agricultural mechanization, the planting method of cotton fields has become extremely important for high cotton yields. In the era when conventional cotton varieties dominated, cotton sowing was mostly direct seeding, cotton planting density was relatively high, cotton row spacing was relatively small, and cotton fertilization was mostly broadcast application. After hybrid cotton was promoted and applied on a large scale, because the individual development of hybrid cotton is larger, cotton field density was continuously reduced, cotton row spacing was expanded, and cotton
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Key Technical Points for Raising Seedlings of Sweet Peppers and Hot Peppers in Open-Field Cultivation
I. Variety Selection: For this cultivation method, it is advisable to choose varieties with strong growth vigor, disease resistance, and strong heat tolerance. For sweet peppers, such as Jiyan No. 6, Jiyan No. 4, and Zhongjiao No. 4; for hot peppers, such as Jize pepper, Wangdu pepper, etc. II. Seedling Raising Must Be Adopted: For direct seeding, due to extensive management, it causes uneven seedling growth or missing plants and gaps in rows, a short growth period, and a transplanting time more than 40 days later than seedling raising and transplanting, with short plants and poor seedling quality. If a year with a major outbreak of viral disease occurs, the disease spreads, causing severe yield reduction or even total crop loss. When transplanting with the seedling-raising method, the seedlings have already
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Harvesting and Fresh-keeping Methods for Cuttings of Amorpha fruticosa, an Open-field Flower
[Other Chinese names] Mianhuai [Family and genus] Fabaceae, Amorpha [Place of origin] North America [Plant characteristics] Amorpha fruticosa is a clumping shrub. Plant height 1-4 m. Branches grayish blue. Odd-pinnate compound leaves alternate; leaflets 11-25, oblong. [Cutting harvest] The harvested part is the first-year woody branch of Amorpha fruticosa, preferably 1-1.5 cm in diameter. To obtain the ideal propagation results, top branches with shorter internodes and full growth should be selected. Pay attention to reasonable cutting collection so as not to affect
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Detailed Explanation of Key Points of Open Inoculation Technology for Shiitake Mushroom Logs
Open inoculation of shiitake mushrooms is a new technology summarized and innovated in recent years. Because it is easy to operate, does not require an inoculation box, and saves time and labor, it is generally welcomed by the majority of mushroom farmers. The technology is introduced as follows: 1. Selection of inoculation site ① Choose a room that is sheltered from the wind, clean, dry, well sealed, and with no sources of miscellaneous bacteria contamination within 50 meters nearby as the open inoculation site. ② The inoculation room must be cleaned and disinfected one day before the mushroom logs are moved in. 2. Mushroom log handling ① Under normal pressure sterilization, after maintaining at 100°C for 14 hours,
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Lily Cultivation Techniques: Open Field, Greenhouse, Pot and Cut Flower Growing Methods
The lily is a cold-hardy bulbous flower of the Liliaceae family that loves light and fertile sandy soil. It has unusual flower shapes and many bright, beautiful colors, and works both as a potted plant and a cut flower, giving a sense of wealth and elegance, and it is very appealing; it can be planted year-round, produces a large quantity of flowers, and has high economic returns, so in recent years its cultivation has developed quickly; but beginners often see poor growth, few flowers and disease; for this reason, the author, based on cultivation practice, briefly describes the following lily open field, greenhouse, pot and cut flower cultivation techniques. 1. Planting Methods and Time Regardless of whether lilies are planted in the open field or in a greenhouse, fertile, well-aerated sand
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Cotton seed: never harvest prematurely opened bolls; pay attention when saving and selecting seed
According to data from seed management department testing, in recent years the germination rate of some cotton seed has been only around 60%, still far from the national standard of 80% germination rate. From extensive surveys, the reasons for low cotton seed germination rates are: first, harvesting immature prematurely opened bolls; second, purchasing "favor bolls" with high moisture content; third, mixing in diseased seed from rotten cotton bolls; fourth, storing cotton seed in the warehouse before it is fully sun-dried; fifth, containing some cotton seed broken during processing; sixth, relatively high residual acid content in coated cotton seed; seventh, not strictly
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How does the planting density of open-field potatoes affect yield?
Potatoes in Tongren City are mainly grown as an early-maturing vegetable. In order to explore the optimal density for open-field cultivation of virus-free potatoes, the Tongren City Agricultural Technology Station conducted a density trial on open-field cultivation of virus-free potatoes from 2006 to 2007. 1 Materials and Methods 1.1 Overview of the trial site The trial site was selected in the contracted field of Yang Xiuming, Hongdong Group, Mulong Village, Bahuang Town, Tongren City, at an altitude of 260 m. The trial field had sandy loam soil with medium fertility, and the previous crop was Houttuynia cordata (fish mint). 1.2 Trial materials The test variety was first-grade seed potatoes of "virus-free Mira", provided by
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Do cotton plants still need topdressing after the flowers have opened all the way to the top?
In early August, we went to some concentrated cotton-producing areas to investigate and found that some cotton plants had already bloomed all the way to the top of the plant, and the color of the cotton main stem had also turned red up to the top. Farmers asked: Can cotton like this still be topdressed? Faced with such a question, the specific situation must be analyzed specifically. Generally speaking, if cotton has bloomed to the top in early August and the cotton stalks have also turned red to the top, it indicates that the cotton plant itself is suffering from malnutrition. Either the cotton field's fertilizer supply is insufficient, causing the cotton to suffer from fertilizer deficiency, and vegetative growth and reproductive growth have been inhibited; or fertilizer has already been applied but the cotton plant has not yet absorbed it; or early vegetative growth was
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