Mineral nutrition of slash pine in subtropical Australia. III. Relationships between foliar P concentration and stand growth

1995 ◽  
Vol 41 (2) ◽  
pp. 109-115 ◽  
Author(s):  
Z. H. Xu ◽  
J. A. Simpson ◽  
D. O. Osborne
Keyword(s):  
Mineral Nutrition ◽  
Slash Pine ◽  
Stand Growth ◽  
P Concentration ◽  
Subtropical Australia

Диагностика минерального питания моркови на пойменных почвах Нечерноземной зоны

2018 ◽  
Author(s):  
V.A. Borisov ◽  
I.Yu. Vasjuchkov ◽  
A.A. Kolomiets ◽  
O.N. Uspenskaya ◽  
A.V. Kornev
Keyword(s):  
Mineral Nutrition ◽  
Mineral Fertilizers ◽  
Root Crops ◽  
Floodplain Soils ◽  
Standard Production ◽  
A Share

Установлено, что на пойменных почвах использование методов диагностики минерального питания растений моркови «по почве» и «по черешку» в фазу начала образования корнеплодов позволяет значительно (на 36–42%) снизить расход минеральных удобрений, обеспечивая урожайность моркови на уровне 70 т/га с долей стандартной продукции 78–81% без существенного изменения качества корнеплодов.It was found that in floodplain soils, the use of methods of diagnosis of mineral nutrition of carrot plants «on the soil» and «on the petiole» in the phase of the beginning of the formation of root crops can significantly (by 36–42%) reduce the consumption of mineral fertilizers, ensuring the yield of carrots at the level of 70 t/ha with a share of standard production of 78–81% without significantly changing the quality of root crops.

PRODUCTIVITY OF SPRING WHEAT DEPENDING ON GROWING CONDITIONS

2020 ◽  
Keyword(s):  
Growth Regulators ◽  
Economic Efficiency ◽  
Spring Wheat ◽  
Mineral Nutrition ◽  
Photosynthetic Activity ◽  
Volga Region ◽  
Mineral Fertilizers ◽  
Biological Products ◽  
Upper Volga ◽  
The Upper Volga Region

Spring wheat is the main grain crop. Stable production of high-quality wheat grain is the key to the country's food independence. Therefore, the study of the elements of growing spring wheat technology, aimed at increasing the productivity of crops, is important. The study of the interaction of plants and microorganisms depending on the level of mineral nutrition in crop planning is currently ofparticular relevance. The use of biological products, growth regulators improves the mineral nutrition of plants, increases productivity and its quality, and also provides savings in mineral fertilizers. In the upper Volga region, the main spring crops are wheat, barley and oats. To further increase them in the region, it is necessary to study the characteristics of the formation of yields and determine the most productive crops depending on the level of nutrition, biological products and growth regulators. The scientific article presents the results of the study of these drugs on the productivity of spring wheat. In field experiments, it was planned to get 30, 40 and 50 tons of grain per hectare. Fertilizers for the planned harvest were made taking into account the agrochemical properties of the soil. From biological products used Flavobacterin, which has a protective effect against diseases and improves product quality, from growth regulators used agrochemicals HUMATE + 7 (10 % liquid concentrate), which is characterized by high biological activity. The yield level was determined taking into account the average long-term moisture supply and qualitative assessment of arable land. The indicators of photosynthetic activity of crops, crop and its structure, quality characteristics of grain and economic efficiency of growing spring wheat in the upper Volga region are presented. As a result of researches the optimum level of mineral nutrition for wheat, the efficacy of agrochemical diazotroph and programming yields of spring wheat, determined the photosynthetic activity of crops and grain yield, calculated economic efficiency of the studied techniques and established the qualitative characteristics of the crop. The program for obtaining the planned wheat yields in the years of the experiments was completed by 68-91 %. Close to the planned the program was implemented using a biological product and growth regulator-74-91 %.

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