Effects of Different Application Amounts of Potassium Fulvate on Yield and Quality of Tomato and Soil Physical and Chemical Properties

• Published in: Hunan agricultural science & technology newsletter : HASTN Vol. 18; no. 12; pp. 2392 - 2400
• Main Authors: Gao, Wei, Li, Mingyue, Yang, Jun, Gao, Xianbiao, Feng, Haijuan, Zhang, Shanping, Zheng, Chunlian
• Format: Journal Article
• Language: English
• Published: Changsha Wu Chu (USA-China) Science and Culture Media Corporation 01.12.2017
• Subjects: Acidic soils; Acids; Agricultural production; Agriculture; Agrochemicals; Chemical properties; Chlorophyll; Cold tolerance; Corn; Crop diseases; Crops; Disease resistance; Drought; Drought resistance; Dry matter; Experiments; Fertilizers; Fruits; Humic acids; Humid climates; Loam; Molecular weight; Nitrates; Nitrogen; Organic compounds; Organic matter; Pesticide application; Pesticides; Phosphorus; Plant nutrition; Potassium; R&D; Rainfall; Research & development; Science; Soil chemistry; Soil properties; Soil sciences; Soil temperature; Soil testing; Sugar; Summer; Tomatoes; Wheat; Winter
• ISSN: 1009-4229

Key words Greenhouse tomato; Potassium fulvate (PF); Yield; Quality; Soil physical and chemical properties (ProQuest: ... denotes non-USASCII text omitted.) Potassium fulvate (PF) is an ef fident organic compound, which has a lower molecular weight, and could be absorbed and utilized by crops easily, thereby promoting crop growth and improve chlorophyll, Vc and sugar contents. [...]PF has the effect of improving drought resistance, cold tolerance and disease resistance11© It is a kind of organic matter with the highest activity in soil humic acid. The experiment region has a warm temperature zone semi-humid continental climate, with an annual average temperature at 11.6 °C and a yearly sunlight duration of 2 810.4 h. In this area, the frost-free season is 203 d, and the natural total precipitation is 586 mm. The tested soil is moisture soil, medium loam, with nitrate nitrogen, rapidly available phosphorus and rapidly available potassium contents of 78.2, 128.3 and 265.3 mg/kg, respectively. [...]the dry matter weight of plant increased by 14.4% . Because PF could improve fertilizer efficiency, and adsorb and exchange many mineral elements in soil, such as P, Ca and Mg, the effectiveness of these elements is improved greatly, thereby improving the nutritional conditions of crops. Supported by Plant Nutrition and Fertilizer Subject Cluster Open Fund of Ministry of Agriculture (2014JZDKFKT001); Chemical Fertilizer and Pesticide Application-reducing Efficiency-increasing Integrated Technique Research and Development Project (2016YFD0200103); Innovation Team of Tianjin Vegetables Research System (ITTVRS) (2017012).