Performance of Tomato under Subsurface Drip Irrigation Laterals placed at various Depths in Inceptisols

Journal of AgriSearch Pub Date : 2021-03-01 DOI:10.21921/jas.v8i01.19559

D. Singh, A. Bahadur, S. Chaurasia, Shekhar Singh

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Abstract

Tomato is one of the important vegetable crops for nutrition security. The vegetables respond very well to proper irrigation water management towards increasing yield. A study on response of tomato under subsurface drip irrigation (SDI) with laterals placed at 5 cm, 10 cm and 15 cm depth below soil surface was carried out in inceptisols at ICAR- Indian Institute of Vegetable Research, Varanasi. It was found that soil water content variation was less and more favorable within top 30 cm depth of soil profile under SDI with lateral placed at 10 cm depth below soil surface. The maximum yield of tomato 52.85 t/ha was realized under SDI with lateral placed at 10 cm depth below soil surface followed by yield under 15 cm and 5 cm depth of lateral placement. It was 14.67% higher than the surface drip irrigation. The lowest yield of tomato was recorded 46.09 t/ha with surface drip irrigation. Maximum water use efficiency 1.968 t/ha-cm was obtained with SDI lateral placed at 10 cm depth below soil surface. To realize maximum yield and water use efficiency of tomato, SDI laterals could be placed at 10 cm depth below soil surface.

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番茄在地下滴灌条件下的生长性能

番茄是保障营养安全的重要蔬菜作物之一。蔬菜对适当的灌溉用水管理有很好的反应，以提高产量。在瓦拉纳西ICAR-印度蔬菜研究所进行了番茄地下滴灌(SDI)试验，研究了横向滴灌深度分别为5 cm、10 cm和15 cm。结果表明，横向放置在地表以下10 cm深度的SDI下，土壤含水量在土壤剖面前30 cm深度内变化较小，且更有利。横向埋设深度为10 cm的SDI下番茄产量最高达52.85 t/ha，其次为15 cm和5 cm的横向埋设;比地表滴灌高14.67%。地表滴灌番茄产量最低46.09 t/ hm2。当SDI侧置在土壤表面以下10 cm深度时，水分利用效率最高为1.968 t/ha-cm。为实现番茄的最大产量和水分利用效率，可在土壤表面以下10 cm处设置SDI侧边。

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Journal of AgriSearch

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