The movement into soil of P from superphosphate grains and its availability...
AbstractThe movement of P applied as grains of triple superphosphate into two soils (laterite and podzol) of differing P sorption capacities was studied in a laboratory experiment. The availability of...
View ArticleAn assessment of soil tests for phosphate for the prediction of cereal yields...
AbstractNine soil tests for phosphate were evaluated for predicting the yield and P content of wheat, barley and oats grown on a sandy soil in Western Australia: Olsen, modified Olsen 1 (soil:solution...
View ArticleA model to predict changes in soil moisture, NO 3 -N content and N uptake by...
AbstractA simulation model to predict fertilizer N behaviour in a soil-plant (wheat) system has been developed and tested. The model predicts components of field water balance (evaporation,...
View ArticleNitrate distribution and accumulation in an Ustochrept soil profile in a long...
AbstractDistribution and accumulation of NO3—N, down to 210 cm depth, in the soil profile of a long term fertilizer experiment were studied after 16 cycles of cropping (maize-wheat-fodder cowpea). The...
View ArticleThe interpretation of Olsen extractable P values in relation to...
AbstractA greenhouse experiment, with Okra (Abelmoschus esculentus L.) as the test crop, was conducted on twenty-one soils ranging in Olsen's extractable phosphorus from 1.8 to 15.5µg Pg−1 soil. The...
View ArticleDryland wheat yield dependence on rainfall, applied N and mulching in...
AbstractTo evaluate the response of dryland wheat (Triticum aestivum L.) to mulching in preceding maize and fertilizer N application field experiments were conducted for six years (1980–86) with...
View ArticleResponse of dryland wheat to fertilizer nitrogen in relation to stored water,...
AbstractYield response of dryland wheat to fertilizer N application in relation to components of seasonal water (available soil moisture and rainfall) and residual farm yard manure (FYM) was studied...
View ArticleInfluence of soil organic carbon on the interpretation of soil test P for...
AbstractOrganic carbon is known to alter crop response to applied phosphorus (P) but that fact has not been incorporated in soil test interpretations. To achieve this objective, field experiments with...
View ArticleDryland wheat yields in relation to soil organic carbon, applied nitrogen,...
AbstractCorrelations of long-term yields with soil, climatic and management variables would increase our understanding about their contribution to yield and help balance them for optimising the same....
View ArticleNitrogen mineralization kinetics in sewage water irrigated and heavy metal...
AbstractLaboratory incubation experiments were conducted to study N mineralization kinetics of soils from north of Braunschweig, where sewage water has been displaced since the fifties. Three bulk top...
View ArticleSustainable yield trends of irrigated maize and wheat in a long-term...
AbstractLong-term field experiments play an important role in understanding the complex interactions of plants, soils, climate and management and their effects on sustainable crop production. A...
View ArticleNitrogen balance and N recovery after 22 years of maize-wheat-cowpea cropping...
AbstractThe influence of N, P and K application through inorganic and organic fertilizers on N recovery in crop plants and its balance in the soil-plant (maize-wheat-cowpea fodder) was studied for the...
View ArticleNutrient budgeting for phosphorus and potassium in a long-term fertilizer trial
AbstractInfluence of N, P and K application through inorganic and organic fertilizers on P and K removal in crop plants, changes in soil fertility status and their balance in the soil-plant...
View ArticleMineralisation of newly accumulated nitrogen
AbstractSince the 1950s, large amounts of nutrients (N, P and K) have been accumulated in German arable soils due to a surplus in the balance between the amounts of nutrients applied and those removed...
View ArticleNitrogen mineralisation kinetics in soils: An assessment of some modelling...
AbstractA number of modelling approaches have been used to describe N mineralisation kinetics in soils. In this paper we present a comparative evaluation of some modelling approaches to predict net N...
View ArticleQuantifying the effect of soil organic matter on indigenous soil N supply and...
AbstractA field experiment was conducted on a loamy sand soil for six years to quantify the effect of soil organic matter on indigenous soil N supply and productivity of irrigated wheat in semiarid...
View ArticleA 25-year record of carbon sequestration and soil properties in intensive...
AbstractAs a major carbon pool on earth, soil organic carbon may act either as a sink or a source of atmospheric CO2, a greenhouse gas. Soil organic carbon is also impacting fertility, and, in turn,...
View ArticleSoil carbon pools under poplar-based agroforestry, rice-wheat, and...
AbstractLabile fractions of soil organic C are considered important indicators of soil quality as these can respond rapidly to land-use changes and agricultural management. We studied the impact of...
View ArticleManagement of organic amendments in rice-wheat cropping system determines the...
AbstractAimTo study the impact of long-term application of organic amendments and fertilizer nitrogen on C sequestration and its distribution among various physical pools of soil organic matter in...
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