Проучване влиянието на универсален течен тор “MaxGrow” върху добива от семена при пролетен фуражен грах (Pisum sativum L.)

Абстракт

There are high ecological requirements to the modern farming in Bulgaria in use of fertilizers. To meet these requirements it is necessary ecologically balanced and science — based standards and technologies of fertilization to be applied, corresponding to the soil and nature conditions.
For plant development the availability of certain amounts of nutrients is not enough, but also they have to be in suitable proportions and to be applied at the proper period of plant growth. Plants need defined amounts of microfertilizers, necessary for their normal development. Microfertilizers, included in compasition of liquid fertilizers аге part of the general problem of the mineral nutrition, connected with yield of crops. The significance is in the producticn of fertilizers with balanced composition of macro- and microelements, meeting plant requirements and at the same time without negative influence on the final users — humans and animals.
Liquid complex fertilizers are widely used in agriculture. The proportion of used liquid fertilizers in the world is over 40%. The use of liquid fertilizers in Bulgaria has a great future, because of the low price and the minimal expenses for their application. They are suitable for dosing in preparation of working solutions, and contain the main nutrient macro- and microelements in the best possible form for absorption by plants. The objective of the investigation is the effects оf the universal liquid fertilizer “МахСгому" оn seed yield to be determined in spring forage peas (Pisum sativum L.).
Three-year experimental work showed that the use of liquid fertilizers increased the number of pods, number of seeds and weight оf seeds per а plant, also and mass of 1000 seeds, treated by 0.5 I/da MG (155.2 g mass of 1000 seeds, аnd in treatment by 0.6 I/da — 151.5 g, respectively).
The highest yield obtained was in plant treatment by 0.5 I/da solution of thе universal liquid fertilizer "MaxGrow" (224.3 kg/da), 76.8 kg/da higher, compared with the control without fertilization. The variant with treatment in dose of 0.6 ИЧа апа yield of 204.2 kg/da followed, exceeding the control by 56.7 ka/da. In application of the liquid fertilizer in dose of 0.7 I/da, 198.5 kg/da was yield obtained, 51.0 kg/da higher than the control without fertilization.