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Applying boll fertilizer to cotton pays off, and this investment account must be calculated clearly
This year, due to early drought followed by flooding and the recent hot, high temperatures, cotton development progress has been very uneven. In particular, the number of bolls set on cotton varies greatly. In cotton fields planted earlier and managed better, the average number of early summer bolls per cotton plant has already reached 8 to 10, and for high-yield cultivation farmers, the early summer bolls on cotton can be as many as more than 20, while in general fields the early summer bolls on cotton are only 4 to 6. From the perspective of cotton's growth process, field cotton has now generally entered the boll-setting stage. The period when cotton concentrates on setting bolls is precisely the period of greatest fertilizer demand. From the stages divided by cotton boll setting,
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Observe the growth of cotton bolls and apply the cotton flowering and boll fertilizer precisely
In the middle and late stages of cotton growth, flowering and boll fertilizer should be applied accurately according to changes in bolls and leaf color. Generally, where soil fertility is good, seedling and bud fertilizer is plentiful, growth during the bud and flowering stage is vigorous, leaves are large, leaf color is deep, internodes are sparse, bracts do not tightly enclose the flower buds, few bolls are set, and leaf color does not fade at early flowering, flowering and boll fertilizer in such cotton fields should not be applied early; it should be postponed until bolls increase and leaf color turns lighter. Conversely, where soil fertility is poor, seedling and bud fertilizer is applied in small amounts, growth during the bud and flowering stage is weak, leaves are small, leaf color is light, internodes are short and thin, bract color is light, flower buds are few, and leaf color is pale yellow at early flowering, 5-8 kg of urea per mu can be applied as a relay fertilizer
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Eight key points for walnut cultivation; only by applying techniques according to the specific conditions can you achieve high yields
Only by applying techniques according to the specific conditions can you achieve high yields. Eight key points to note in walnut cultivation
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Corn with potassium deficiency loses water and wilts; applying potassium fertilizer can ensure high yield
Potassium deficiency causes water loss and wilting; for high corn yield, apply potassium fertilizer
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Methods for Skillfully Applying Foliar Fertilizer to Tea Plants to Improve Quality
If famous tea is contaminated, especially export products, its output value and reputation will suffer serious damage. To improve tea quality and yield, in addition to measures such as growing green manure in tea gardens, mulching to retain moisture, applying sufficient farmyard manure after each harvest, and improving tea-making techniques, foliar fertilizer should also be used skillfully. This is a good method that uses a small amount of fertilizer, takes effect quickly, and yields high returns, generally increasing yield by 20%-30% or more. The techniques are: Fertilization timing. When the new shoots of each round of tea in spring, summer, and autumn sprout and grow to the stage of one bud and one initial leaf, choose a windless sunny day at early morning, evening, or on a cloudy day for spraying, once a week for 2-3 consecutive sprays. Spray until water drips from the leaf surface. Fertilizer ratio. Mainly nitrogen, phosphorus, and potassium, supplemented by micronutrient fertilizers, with a ratio of 4:1:1. Micronutrient fertilizers are proportioned according to the principle of supplementing whatever the tea plant lacks. Fertilization concentration. The fertilization concentration is related to the fertilizer variety and weather conditions. According to experiments, urea is 0.5%, superphosphate 1%, potassium sulfate 0.5%, zinc sulfate 50-100 ppm, and ferric molybdate 20-50 ppm. If the concentration is too high, fertilizer damage is likely to occur; otherwise, it will not be effective. Combination with multiple substances. It can be combined with pest control, sprinkler irrigation, and plant growth regulators, saving labor and making mechanized operation easier to achieve. Chemical properties of fertilizers and pesticides. Acidic fertilizers should be combined with acidic pesticides, and alkaline fertilizers with alkaline pesticides, so as not to produce chemical reactions or precipitates, preventing mutual cancellation of fertilizer and pesticide efficacy. Use biological pesticides to control pests and diseases. Using biological pesticides to control tea plant pests and diseases is the best choice, as it is safe, reliable, pollution-free, and harmless, with low cost and high control efficacy, such as Bt emulsion, Bacillus thuringiensis, Beauveria bassiana, agricultural antibiotics, and plant antibiotics.
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How do vegetables get nitrogen fertilizer applied? Signs and dangers of excessive nitrogen fertilizer
It is worth noting that nitrate ions, upon contact with digestive enzymes in saliva, are converted into nitrosamines, a chemical compound that the medical community has confirmed to be a carcinogen. Therefore, Professor Zheng Zhengyong reminds the public that just as the Department of Health encourages children to eat more fruits and vegetables, they should also
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The Benefits and Uses of Compost Explained in Detail
What benefits does applying compost have? Do you know? The nutrient source for organic crops, under the principle that chemical fertilizers must not be used, depends entirely on the use of compost. As for the nutrient content of compost, aside from itself containing a small amount of readily available inorganic nutrients, most
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How do you thicken the roots of a honeysuckle bonsai? Prune the thin branches, keep the main trunk, apply extra fertilizer and water less
Honeysuckle is a common potted plant in daily life. Honeysuckle is very easy to grow, but if you want honeysuckle to bloom all over the branches, you must find a way to thicken the roots. How do you thicken the roots of a honeysuckle bonsai? This is related to the usual cultivation methods and pruning. Before the honeysuckle grows tall, you can prune the thin branches of the honeysuckle
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How do you fertilize Bougainvillea? Applying organic fertilizer once every half month is best
Bougainvillea has a long blooming period and brilliant flower colors. It is a highly ornamental plant, and many flower lovers grow it in pots at home. For experienced growers, caring for Bougainvillea is very simple, just a matter of hands-on work; but for beginners, it is a bit difficult to grow, especially how to fertilize Bougainvillea, which has stumped many people. In response
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What fertilizer is best for the money tree (Pachira aquatica)? Apply compound fertilizer once every 15 days
Growing a money tree at home has now become the choice of more and more people, because the money tree not only has a good symbolic meaning, but is also highly ornamental, and more importantly, it beautifies the home environment and purifies the air. However, beautiful as the money tree is, it is not easy to grow it well. Besides watering, fertilizing is also something that requires extreme attention
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