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Agrochemicals in Soils - download pdf or read online

By A. Banin

ISBN-10: 0080259146

ISBN-13: 9780080259147

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Baert activities, is given in Table 1. In this table the most stable N compound(s) is (are) given at the top of each pH section, followed by the compound(s) of lower stability. In almost every case, N2 was the most stable product at equilibrium. In more aerobic conditions, N0 2 and NO; came into competition with the N2 : N0 2 at higher pH and with N0 2 in acid conditions. At pH 4 and with decreasing (0 2 ), the relative stability of N0 2 TABLE 1 LIST OF NITROGEN COMPOUNDS WITH DECREASING STABILITY AS A FUNCTION OF pH AND ( 0 2 ) .

Saturated hydraulic conductivity measurements were determined on undisturbed soil cores using sample collection equipment and procedures described by United States Salinity Laboratory Staff (1954). RESULTS AND DISCUSSION Data for yield of forage, water applied, leaching fraction, and drainage volume for the 4-year experiment and for the nitrate nitrogen concentration in drainage waters at the end of the experiment are presented in Table 2. The yields were nearly the same for each soil and were not consistently related to irrigation treatments.

36 Nitrogen Losses and Soil Profile TABLE 2 DATA FOR YIELD OF FORAGE, WATER APPLIED, LEACHING FRACTION, AND DRAINAGE VOLUME DURING 4 YEARS OF TREATMENT WITH MANURE AND THE NITRATE NITROGEN CONCENTRATION IN THE DRAINAGE WATER AT THE END OF THE EXPERIMENT. 24 Drainage volume0 Nitrate nitrogen (cm) b (mg/1) 96 204 70 141 60 157 131 82 59 47 53 24 a Volume of water, expressed in surface cm, that percolated below the root zone. b cm - ha per ha. TABLE 3 DATA FOR NITROGEN BALANCES DURING 4 YEARS OF APPLICATION OF MANURE TO THREE SOILS.

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Agrochemicals in Soils by A. Banin

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