A model of solute transport in overland flow is developed and applied to the simulation of surface fertigation. Water flow is simulated using the depth-averaged, one-dimensional shallow water equations. Solute flow is represented by an advectiondiffusion model. The resulting set of three partial differential equations is sequentially solved at each time step. First, water flow is computed using...

The rational use of nutrients is of fundamental importance for obtaining high productivity of high nutritional quality. This work was developed with the aim of evaluating the quality of pepper fruit grown under different fertigation managements and different levels of nitrogen and potassium. The experimental design was of randomised blocks in a 3 x 6 factorial scheme with four replications. The...

Fertigation is widely used in the new intensive olive orchards, although, there is not enough information for a rational management of this practice. Preliminary results of an fertigation experiment iniciated in 1999 in a mature olive orchard of the cultivar ‘Manzanilla de Sevilla’ are presented. Four treatments were established: T1(no fertilizer) and T2, T3 and T4, in which the trees received ...

Appropriate irrigation and nitrogen (N) management strategies are necessary to achieve a sustainable yield of maize with relatively low water N inputs. Here, 2-year field experiment two methods (drip flood irrigation) five application rates (0, 225, 300, 375, 450 kg ha−1) was conducted evaluate use efficiency in the North China Plain (NCP). Compared fertigation (FF), drip (DF) improved soil con...

Aims: To study the nutrient uptake and status of available nutrients in soil after harvest groundnut as affected by different irrigation levels methods at Northern Transitional Zone Karnataka.
 Study Design: The experiment was laid out randomized block design with replicated thrice.
 Place Duration Study: AICRP on Groundnut, Main Agricultural Research Station, University Sciences, Dha...

Evaluating the effects of N and K supply on grapevines ( Vitis vinifera L.) techniques for nutritional diagnosis is great importance fertigation management this crop. This study evaluated soluble concentrations NO 3 – + in petiole sap leaf chlorophyll index drip irrigated ‘Syrah’ grapevine (from 17 June 2013 to 25 Nov 2014). The treatments consisted five levels (0, 15, 30, 60 120 kg ha –1 ) 2 O...

Proper N fertilizer and irrigation management can reduce nitrate leaching while maintaining crop yield, which is critical to enhance the sustainability of vegetable production on soils with poor water and nutrient-holding capacities. This study evaluated different methods to measure nitrate leaching in mulched drip-irrigated zucchini, pepper, and tomato production systems. Fertigation rates wer...

The effects of a municipal solid waste compost (MSWC) (from Villarrasa-HuelvaSpain) on growth, yield and mineral composition of tomato plants (Lycopersicon esculentum Miller, cv. Genaro) were studied. Results were compared with those observed both without the application of organic matter (Control) and with the app1ication of a commercial compost AC (made from sheep manure). Soils of the three ...

BACKGROUND Greening or huanglongbing (HLB) is a debilitating disease of citrus caused by Candidatus Liberibactor asiaticus and transmitted by the Asian citrus psyllid (ACP), Diaphorina citri. HLB now occurs worldwide in all major citrus growing regions except the Mediterranean and Australia. Management relies principally on insecticidal control of the ACP vector, but is insufficient, even for y...

high efficiency and uniformity of water and fertilizer application are usually, considered as the ultimate goals of an appropriate design and management of irrigation and fertigation systems. the objective followed in this paper was to present a simulation-optimization model for alternate vs. conventional furrow fertigation. two simulation models (surface fertigation and swms-2d models) along w...