Effects of Amino Acid Foliar Fertilizer on the Yield and Quality of Different Vegetables

In order to explore the effects of amino acid foliar fertilizer on the yield and quality of different vegetables, we tested the spraying of an amino acid foliar fertilizer(Wanfeng 2) onto the leaves of cucumbers, eggplants and water spinach through contrast experiment in a greenhouse. The results showed that the yield increments of amino acid foliar fertilizer treatments in cucumbers, eggplants and water spinach were 11.57%, 4.43% and 12.41% respectively, and the output-input ratios were 64.52 ∶ 1, 53.31 ∶ 1 and 55.14 ∶ 1 respectively. Amino acid foliar fertilizer can influence the quality of greenhouse vegetables. The total sugar content of the cucumbers, eggplants, and water spinach significantly increased by 12.00%, 22.30%and 12.10% respectively. The vitamin C content increased by 4.76%, 24.80%, and10.90% respectively compared with the control. In conclusion, the spraying of amino acid foliar fertilizer could improve the yield and the nutritive quality of vegetables such as cucumbers, eggplants and water spinach.

Synthesis of Foliar Fertilizer and Ca-S-Si Compound Fertilizer from Titanium-bearing Blast Furnace Slag

With titanium-bearing blast furnace slag, ammonium sulfate, citric acid and potassium carbonate as raw materials to produce foliar fertilizer and Ca-S-Si compound fertilizer by means of heating process for the first time, which improved the solubility of the slag and converted the nutritional elements into such ones which are prone to be absorbed by plants. The effects of process conditions on dissolution rate of titanium were mainly analyzed through the orthogonal experiment. The results showed that the optimum synthesis process conditions of foliar fertilizer from the slag were 360 ℃ for 35 min, the mass ratio of ammonium sulfate and titanium-bearing blast furnace slag was 8：1. Under these conditions more than 80% of iron, titanium, magnesium and part of silicon in titanium-bearing blast furnace slag converted into water-soluble substances and existing in foliar fertilizer. Foliar fertilizer contained nitrogen, sulfur, potassium, iron, titanium, magnesium and silicon, and pH value of foliar fertilizer was 6. Ca-S-Si compound fertilizer mainly contained calcium silicate and calcium sulfate, which existed in the form of citric acid-soluble substance and slightly soluble substance, respectively.

Effects of Amino Acid Selenium Foliar Fertilizer on Selenium Content and Quality of Mango

[Objectives]This study was conducted to explore the treatment methods of amino acid selenium fertilizer suitable for increasing the selenium content of mangoes and improving the quality of mangoes,so as to provide a theoretical basis for the production of selenium-enriched mangoes.[Methods]With Tainong mango as a test material,the amino acid selenium foliar fertilizer was applied by eight treatment methods to investigate the changes of selenium,soluble solid,vitamin C,and titratable acid contents in mango flesh and peel.[Results]Spraying amino acid selenium foliar fertilizer increased the selenium content of mango flesh.The selenium contents of the treatment groups T2,T3,T4 and T5 reached the selenium-enriched standard,and the T2 treatment group had the highest selenium content(0.020 mg/kg).The selenium contents in the peel of all treatment groups were greater than the corresponding selenium content in the flesh.Except for T1,the vitamin C contents of other treatment groups sprayed with amino acid selenium fertilizer increased compared with the control,and that of the T2 treatment group increased significantly(P<0.05).Compared with the control,the soluble solids of the treatment groups sprayed with amino acid selenium fertilizer once also increased.The treatment method of spraying amino acid selenium fertilizer with a dosage of 12000 ml/hm2 once(T2)achieved the best effect of increasing the selenium content and improving the quality of mangoes.[Conclusions]This study provides a scientific basis for increasing the selenium content of mangoes and improving the current situation of insufficient selenium intake.

Effects of Foliar Fertilizers(Insecticides) on Yield and Quality of Alfalfa

To adapt to the rapid development of grass industry, improve the yield and quality of alfalfa and increase the benefits of alfalfa planting, the experiments on foliar fertilizers and plant growth regulators were conducted, 2 suitable foliar fertilizers were screened out from 5. The results showed that the yield of alfalfa increased more than 20% under the treatments of KH2PO4 and Ausnutria, and the crude protein content increased significantly by 9.37%-10.62%, and crude fiber content was reduced by 5.91%-4.36%. As a result, KH2PO4 and Ausnutria were recommended as foliar fertilizers during the growth period of alfalfa with the concentration of 1 000 times and 500 times.

Amino Acid Contents of Indigofera arrecta Leaves after Application of Foliar Fertilizer

The experiment aimed to investigate foliar fertilizer application effects on amino acid content of Indigofera leaves. lndigofera arrecta was planted in plots during both rainy and dry seasons. Foliar fertilizer concentrations consisted of 10 g, 20 g, 30 g, 40 g and 50 g, which solved in 10 L solvent were appIied on sixteen individual plants per plot, The fertilizer was applied 4 times during vegetative growing period. Block randomized design with 3 replications was used in this experiment. The foliar fertilizer containing 20%-22% N （N total）, 15%-16% P （P205）, 15%-16% K, 1.5% Mg, 1% Ca, 1% Fe, 1.42% Zn, 0.53% Cu, 0.88% Mo, 0.53% B and growth hormone 0.025% indole acetic acid （1AA） and giberelic acid （GA） was applied. Samples of each plot were composited leaves from 3 harvest times. The result showed that the foliar fertilizer did not affect aspartic acid, seriue, histidine, threonine, tyrosine, valine, methionine, iso-leusine and leusine content oflndigofera leave. Foliar fertilizer application up to 50 g/10 L resulted in higher （P 〈 0.05） glutamate acid, glysine, arginine, alanine, proline and lysine than those of other fertilizer levels.

Effect of ABA and Biological Bacterial Agents on the Fruit Quality of Jinhua Large and White Peach

[Objective] The aim was to screen the foliar fertilizer and growth regulators to improve the quality of Jinhua Large and White Peach. [Method] The effects of seven foliar fertilizer and growth regulators on the major economic traits of Jinhua Large and White Peach were studied. [Result] After timely spraying of S-ABA and Fushizhuang in young fruit stage,the major economic traits of Large and White Peach including fruit weight and soluble solids content were significantly higher than that of the control,and significantly better than other treatments. In addition,Huoqing spraying treatment could obviously improve the quality of Large and White Peach. [Conclusion] Shifuzhuang,S-ABA and Huoqing spraying could significantly improve the quality of Jinhua Large and White Peach,which were suitable to be disseminated and applied in production.

Quality and Nutrition of Pummelo as Influenced by Potassium

This study aimed to determine the influence of different rates of K （potassium） and K foliar application on the quality and plant nutrition condition of 13-year old ＇Magallanes＇ pummelo trees [Citrus maxima （Burm. ex Rumph.） Merr.]. The experiment was conducted at SODACO （South Davao Corporation） farm, Davao City, Philippines from March to October 2010. Five treatments with increasing K levels were applied per tree： control, no K, 150 g K basal, 225 g K basal and 225 g K basal ＋ foliar application. Application of 225 g K rates positively influenced fruit quality of pummelo. Fruit pulp diameter and juice weight increased while peel thickness decreased. The 225 g K rates also increased juice pH, TA （titrable acidity） and TSS （total soluble solids） per tree. The yield of total phenol, flavonoid, vitamin C and oil per tree increased with 225 g K application. Results of the soil analysis before and after the conduct of the study showed an evidence of fertilizer absorption by the trees. It was also observed that foliar fertilization reduced soil acidity. This indicates the important role of K in improving the nutrient utilization and quality of ＇Magallanes＇ pummelo.

Synthesis of an eco-friendly nanocomposite fertilizer for common bean based on carbon nanoparticles from agricultural waste biochar

The burning of agricultural waste is a major cause of environmental pollution.In this study,we sought to prepare biochar from agricultural waste as a source material for the preparation of carbon nanoparticles(CNPs).Surface morphology,hydrodynamic particle size,and purity and crystallinity of CNPs were extensively investigated using transmission electron microscopy(TEM),zeta sizing,and X-ray diffraction(XRD)spectroscopy,respectively.The CNPs were subsequently immersed in a solution of potassium nitrate(KNO_(3))to prepare a CNPs/NK nanocomposite(CNPs loaded with nitrogen(N)and potassium(K))as a nanocomposite fertilizer for common bean(Phaseolus vulgaris L.).The CNPs/NK nanocomposite was sprayed as a foliar fertilizer at 0,10,20,30,and 40 mg L^(-1) on common bean plants 25 d after sowing on a farm in Shebin El-Kom,El-Monifia,Egypt.The growth,yield,and quality of common bean were investigated during two successive growing seasons(2017 and 2018).The highest seed yields of 2.04 and 2.01 t ha^(-1) and the highest values of growth parameters including plant height of 61.5 and 59.2 cm,number of leaves per plant of 35 and 35,number of flowers per plant of 83.3 and 82.7,and plant fresh weight of 148.7 and 152.8 g plant^(-1) were obtained when using the CNPs/NK nanocomposite at a concentration of 20 mg L^(-1) during the 2017 and 2018 growing seasons,respectively.