Potassium nitrate

About: Potassium nitrate is a research topic. Over the lifetime, 3537 publications have been published within this topic receiving 29450 citations. The topic is also known as: Nitric acid, potassium salt & Saltpeter.

Superstructure of α-phase potassium nitrate

Abstract: The structure of potassium nitrate, KNO3, has been redetermined at room temperature. The compound surprisingly shows a 2 × 2 × 1 superstructure and crystallizes in space group Cmc21. This result contrasts with that found in former investigations, which gave the supergroup Pmcn, neglecting the superstructure. The improved results are due to the employment of a CCD area detector.

Soilless culture liquid for flowers

Abstract: The invention provides soilless culture liquid for flowers having simple preparation method, good using effect and no polluting environment. In order to meet the technical requirements, the soilless culture liquid for the flowers adopts the following technical scheme that main raw materials of the soilless culture liquid comprise calcium nitrate, potassium nitrate, magnesium nitrate, ammonium nitrate, monopotassium phosphate, potassium sulphate, water and the like. The soilless culture liquid is mainly characterized in that: 1) the raw materials are simple and easily obtained, and the preparation process is simple; 2) the product is innocuous and has no pollution; 3) the quality and yield of the flowers are high; and 4) harm of diseases, pests and weeds is little.

Plant growth medium produced with sphagnum and natural mineral as material and without diseases and weeds

Abstract: The plant growth base material for producing diseaseless weed is formed from sphagnum, vermiculite, pearlite, pumica, sand, bark, saw dust, triple superphosphate, ammonium nitrate, calcium sulfate, lime powder, calcium nitrate, potassium nitrate and wetting aid. Said invention has good water-holdingproperty, fertilizer-retaining property, air permeability, and water permeability, and contains rich organic matter content, proper slow-releasing fertilizer and quick-acting fertilizer and rich trace element content. Besides, a water-soluble nutrient starting agent is added to the said raw amterial, it can ensure the nutrient requirement for plant growth in 3-6 weeks, it is convenient for use, and is extensively applicable to cultivating seedling and pot culture of plant.

Efeito de fertilizantes nitrogenados na produtividade de melão

Abstract: A study was carried at Petrolina-PE, Brazil, with the melon crop (Cucumis melo L.), cv. Valenciano Amarelo, in a Red-Yellow Latosol with the objective of evaluating the effect of nitrogen fertilizers sources and their combinations, applied through the conventional way and through water irrigation during the crop cycle. The experimental design was a split block with four replica- tions and nine treatments: 1. control (without N); 2. urea; 3. ammonium sulphate, both applied con- ventionally; 4. urea applied up to 42 days after germination; 5. ammonium sulphate applied up to 42 days after germination; 6. urea applied up to 15 days and potassium nitrate from 16 to 42 days after germination; 7. urea applied up to 15 days and ammonium sulphate from 16 to 42 days; 8. urea applied up to 30 days and potassium nitrate from 31 to 42 days, and 9. urea applied up to 15 days, ammonium sulphate from 16 to 30 days and potassium nitrate from 31 to 42 days, at the level of 80 kg/ha of N. The fertilizers used during the crop cycle (treatments 4 to 9) were applied through irrigation water. It was found that urea applied through fertirrigation up to 42 days provided higher yield (31.14 ton/ha), not differing, however, from the other treatments, with the exception of the control and ammonium sul- phate, which gave the lowest yields (25.06 and 24.65 ton/ha, respectively). It was found a variation in fruit mean weight from 1.63 to 1.84 kg/fruit. There was no significant difference in total soluble solid content ( o Brix ) among the treatments.