Nutrient classification in soil, leaf nutrient content and yield of combination of red and yellow (Prunus aremeniaca L) as influenced by drip fertigation and unoriginal fertilization accompanying water soluble fertilizers were evaluated through field tests for three years on ‘Incepstisols’ at Nauni, Solan, Himachal Pradesh. The refined variety of combination of red and yellow was New Castle. Drip fertigation with 100, 75 and 50% recommended measure (RD) each of conventional manure (CF) and water-soluble fertilizers (WSF) besides conventional soil breeding both under irrigated and rainfed environments were tried in trio. Iso-moisture curves were developed to decide the water distribution pattern under drop irrigation. The results demonstrate that lower wisdoms (30-45 cm) under conventional watering registered much higher water content distinguished to drip watering. Similar trend exhaustive-wise distribution of water at various lateral distances from emitters was noticed under drip and conventional watering system.The plurality of the applied foods during fertigation remained in the surface tiers, whereas N and K transported to lower depths under soil fertilisation plus irrigations. The NO3-N concentration in the above soil layers was larger with drop fertigation than with conventional soil fertilisation, meaning higher emptying losses with the latest. The NO3-N content was low beneath the emitters and evolved with growing lateral distance from the emitter up to 15 cm before sagging. The NH4-N concentration was better under the emitters and lowered both across and laterally. When trickle fertigation was used instead of soil fertilisation, the leaf food content was higher. Fertigation created significantly more combination of red and yellow fruit weight and yield than soil fertilisation. Drip fertigation accompanying WSF resulted in a greater fruit yield than CF. The regression study of data on crop yield and tried fertiliser levels disclosed that the optimum levels for CF and WSF for drip fertigation were 67 and 70% of RD, individually. Thus, fertigation could preserve approximately 30% of the fertilisers used. The results finally proved that trickle fertigation holds a great potential because it improved the fruit length and weight of combination of red and yellow significantly over soil fertilization accompanying conventional surface watering.

Author(s) Details:

Jatinder Nath Raina,
Department of Soil Science and Water Management, YSP University of Horticulture and Forestry Nauni, Vasundra Colony, Shamti Solan HP .173212, India.

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Keywords: Fertigation, drip system, water soluble fertilizers, leaf nutrient content, apricot yield