to determinate the most proper n.p.k. fertilizer level  for increasing the quality and quantity of polygerm seeds of sugar beet , an experiment was conducted in randomized complete block design with three replications in 1998-2000 at research farm of faculty of agriculture, azad university of ardabil (hassan barog). fertilizer treatments were: n30p60k60, n90p90k90, n0p0k0, n90p150k150, n90p120k...

The study of the elements grain sorghum cultivation technology, in particular, application mineral fertilizers, is one main promising tasks, which will contribute to formation high crop productivity. article shows results studies on effect various doses fertilizers growing season duration, feld germination and biometric indicators plants varieties Dniprovsky 39 Vinets Right-Bank Forest-Steppe U...

Abstract This article presents the results of studying dynamics nutritive regime for leached black soil during vegetation period apple trees depending on dosage and application times compound fertilizers, as well combinations organic mineral fertilizers. We detected a positive influence fertilizers accumulation liable forms nitrogen, phosphorus, potassium in fruit orchard. The highest average c...

The paper presents the results of research on peculiarities growth, development and formation elements productivity medium-sized varieties potatoes Miracle, depending impact biological products in foliar feeding. use leads to a prolongation growing season medium-ripe potato variety Miracle years average by 3 - 13 days. shortest vegetation period 80 days is observed control variant (var. 1) long...

The article presents the results of studies effect different doses mineral fertilizers N90P90K90 and N120P120K120 on productivity corn. We studied formation green mass yield corn in following groups maturity: medium-early hybrid Svityaz FAO 250, medium-ripe Aquazor 320 late-ripe Hetera 420. During growing season, plants were exposed to adverse weather conditions. best conditions observed 2018 (...