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Assessment of Changes in Soil Infiltration, Water-Holding Capacity, Bulk Density and Fertility Parameters under Different Tree- and Crop-Based Systems in Semiarid Alfisols

Ramulu, I., Ramachandrappa, B. K., Maruthi Sankar, G. R., Sathish, A., Sandhya Kanthi, M., Archana, A. M.
Communications in soil science and plant analysis 2017 v.48 no.5 pp. 477-500
Alfisols, Annona reticulata, Capsicum annuum, Eleusine coracana, Phaseolus vulgaris, Setaria italica, bulk density, corn, cost benefit analysis, cowpeas, field experimentation, infiltration rate, nitrogen, nutrient uptake, phosphorus pentoxide, potassium, soil fertility, water holding capacity, India
Field experiments were conducted to assess changes in soil infiltration, water-holding capacity (WHC), bulk density and soil fertility with 15 custard apple (CA)-based systems of T1:CA+Fingermillet; T2:CA+Fodder Maize; T3:CA+Fieldbean; T4:CA+Niger; T5:CA+Chilli; T6:CA+Cowpea; T7:CA+Foxtailmillet; T8:Fingermillet; T9:Fodder Maize; T10:Fieldbean; T11:Niger; T12:Chilli; T13:Cowpea; T14:Foxtailmillet and T15:CA in 2012 and 2013 under semiarid Alfisols at Bangalore. T2 gave the maximum CA equivalent yield (1333 kgha ⁻¹), rainwater-use efficiency (4.90 kgha ⁻¹mm ⁻¹), net returns of Rs. 52690 ha ⁻¹ and a benefit-cost ratio of 2.92. T6 gave the maximum WHC of 41.0%; an infiltration rate of 33.1 cmhr ⁻¹; a cumulative infiltration of 66.2 cm; and a minimum bulk density of 1.40 gcc ⁻¹. T6 maintained maximum soil nitrogen (N) of 259 kgha ⁻¹; phosphorus pentoxide (P ₂O ₅) of 67.9 kgha ⁻¹; and potassium oxide (K ₂O) of 141.5 kgha ⁻¹; while T9 gave uptake N of 102.7 kgha ⁻¹; P ₂O ₅ of 24.6 kgha ⁻¹; and K ₂O of 103.7 kgha ⁻¹. T6 was efficient for improving the soil physical, chemical, and biological parameters based on the study.