Diagnostics and optimization of crops' nitrogen nutrition in dryland conditions of northern Kazakhstan

Abstract

The results of years" research (n=600) in diagnostics and optimization of the conditions of crops" nitrogen nutrition are considered in this article. The methodological approach to the evalua tion of soil nitrogen state and crops with nitrogen is exp licated. New method of determining the needs and dose calculation in nitrogen fertilizers with individual requirements of crop and the main factors defining their effectiveness is represented. A model predict ing the effectiveness of fertilizers is also presented. The developed technique allows purposefully manage soil nitrogen regime supplying optimization of nutrition and implementation of crops" potential possibilit ies.

Assessment of Structural Components in the Formation of Productivity of Different Lens culinaris Varieties Against the Background of the Use of Mineral Fertilizers

“…Nitrate nitrogen (N-NO 3 ) was at average level 7.6-9.3 ppm of soil in a layer of 0-40 cm, mobile phosphorus (P 2 O 5 ) was low 10.3-15.4 ppm of soil in a layer of 0-20 cm according to Chernenok (Chernenok et al, 2017;Kurishbayev et al, 2020), potassium (K 2 O) was high 822-971 ppm in a layer of 0-20 cm. Applying mineral fertilizers increased the nitrogen content in the soil to 18.4-22.6 ppm and phosphorus to 32.0-38.7 ppm.…”

Результаты Экологического Испытания (Эси) Сортов Чечевицы В Условиях Обыкновенных Черноземов Северного Казахстана

“…Ключевые слова: зернобобовые культуры; чечевица; экологическое сортоиспытание; хозяйственно-ценные признаки; фазы роста и развития; урожайность; корреляция. Введение В современных условиях земледелия особую роль в диверсификации могут сыграть зернобобовые культуры и прежде всего те из них, которые наиболее приспособлены к почвенноклиматическим условиям Северного региона [1]. Зернобобовые культуры составляют 27% мирового производства сельскохозяйственных культур и обеспечивают 33% белка, потребляемого человеком [2].…”

The effects of ammonium phosphate fertilization on yield and yield components of Mustard varieties in chernozem soil

“…Two types of mustards such as brown mustard (Brassica juncea Czern) and yellow mustard (Sinapis alba L.) are cultivated in Kazakhstan. Chernenok et al, (2017) provided a critical review on the necessity to study mustard in the steppe zone of Kazakhstan, where the biological features of mustard allow growing under arid and harsh climatic conditions for seed, also as a forage and green manure. Importantly, mustard is undemanding to soil conditions and heat which is the advantage of growing mustard in the steppe zone of Kazakhstan.…”