2-Arylhydrazono-3-oxobutanenitriles 2 was reacted with hydroxylamine hydrochloride to yield amidooxime 3. This was cyclized into the corresponding oxadiazole 4 on refluxing in acetic anhydride. When refluxed in DMF in presence of piperidine, the corresponding 1,2,3-triazoleamine 5 was formed. The latter was acylated to 6 by addition of acetic anhydride while treatment of 5 with malononitrile ga...

EC or can be called exchangeable cation is a nutrient found in the soil. This useful for indicating degree of alkaline saturation, which indicates that more saturated soil base, fertile will be. study aims to obtain supporting information conditions show quality land as growing medium. The method used texture analysis on this refers SNI 3423.03:1994 and C-Organic content 4720.13:1998. level tes...

This comparative study was aimed at estimating analytical behavior of methods for determination plant available potassium applied to Bulgarian arable soils and reveal the relationship between amount extractable K. Twenty-four samples from two traditional agricultural regions in Bulgaria were studied. Soil extracted by NH4OAc/HOAc pH 4.5 (AA), diluted double acid (Mehlich 1), CaCl2, BaCl2 a modi...

Pot experiment was conducted at University of Agricultural Sciences, Bangalore, Karnataka, which received five treatments i.e., 0, 5, 10, 15, 20 kg ZnSO4/ha. Among all the Recommended NPK + ZnSO4 @ kg/ha recorded highest mean dry matter yields tomato. The amount zinc extracted by different extractants were in following order as Mehlich-3 - Zn > 0.1 N HCl AB-DTPA 0.01 EDTA DTPA M 1 NH4OAc (pH...

Response of potassium (K) correlated with extracted K using five laboratory methods: neutral N NH4OAc pH 7.0; 4.8, 0.01M CaCl2, 1N Hot HNO3 and 0.5N NaHCO3 7.0 by sorghum were determined in four selected soils from twenty locations Kwara State, Nigeria the green house to ascertain ideal procedure for routine analysis. Regression equations derived each soil between uptake level applied and, extr...

Bu çalışma, armut ağaçlarının bulunduğu topraklarda çeşitli bor fraksiyonlarının araştırılması amacıyla yapılmıştır. amaçla Türkiye'nin Bursa yöresindeki “Deveci” ve “Santa Maria” (Pyrus communis L.) bahçeleri ziyaret edilmiştir. Toprak örnekleri 0-30 cm 30-60 den alınmıştır. Ayrıca meyve yaprak numuneleri de toplanmıştır. Toplam toprak boronunun en büyük oranı kalıntı formda (% 94.28-94.51) me...