Some unconventional possibilities of enhancing the productive soil use and fertilizer phosphorus in increased yields
1996
Borlan, Z. | Nebunelea, D. (Institutul de Cercetari pentru Pedologie si Agrochimie, Bucharest (Romania)) | Dornescu, D. | Istrati, E. | Rusu, C. (SCA Podu-Iloaiei, Iasi (Romania))
By a "productive use" we mean a nutrient uptake with a corresponding yield increase at the same or even diminished nutrient concentration in the plant dry matter. Making a highest possible productive use of the nutrients from all available sources (soil, air, natural and artificial fertilizers) is a permanent concern among Romanian agriculturists. This is not only an economical ground but also because of the inverse relationship and close correlation which may be traced between nutrient productive use in crops and the risk of their dissipation within the environment and the spoilage of the later. As "unconventional" we consider those soil and plant applied measures and operations which usually are not yet envisaged by crop technologists for large scale crop production. Theoretical considerations and some experimental support are given in the paper for colloid pronotation in base saturated soils, supplementary, leaf applied, fertilisation, special foliar fertilisation to increase the nutrient content in seeds, especially in seeds of hybrid cultivars (maize and sunflower) and for complex seed protection and seedling physiological stimulation, all as unconventional possibilities to enhance the productive use of nutrients in increased crop yields.
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