Basing the parameters for optimum providing pea and soya with water, phosphorus, boron and molybdenum for active symbiotic nitrogen fixation
Posypanov, G.S.; Kashukoev, M.V.; Zherukov, B.K.
Izvestiya Timiryazevskoi Sel'skokhozyaistvennoi Akademii 1994(2): 33-42
1994
Accession: 008214470
It has been found in greenhouse experiments on leached Caucasian chernozems with unstable moisture content, low amount of mobile forms of phosphorus, boron and molibdenum that to realize potential symbiotic activity and seed production of pea and soya it is necessary to maintain soft moisture not lower than moisture of capillary break; the lowest limit of optimum supply of mobile phosphorus is 25 mg of P-2O-5 per 1 kg of soil (after Machigin). Application of boron fertilizers (1 kg of boron per 1 ha) and treating seed with molibdenum-acid ammonium (50 g per hertare normal value) increase nodule weight, the amount of fixed air nitrogen and seed production of pea and soya plants.