Integrated Nutrient Management in Teak through Fertigation

Abstract

A trial on integrated nutrient management in teak through fertigation was conducted on medium black soils during 1995 at 'Teak Farm' Murakatti, Dharwad (Karnataka) under irrigated conditions. Teak was planted at 2 m apart. The factorial experiment consisted of three fertilizer levels, viz., D₁ 100:50:100, D² 200:100:200, D³ 300:150:300, N:P₂0₅:K₂O kg/ha and five frequencies of fertigation, viz., F₁-two, F₂-three, F₃-four, F₄-six splits a year, F₅-soil application in two splits. Biomass production did not differ significantly during first year. The total biomass (28 MAP) increased significantly by 9.6 and 6.1 percent in D₂ and D₃ levels, respectively as compared to D₁ level. Similar trend was observed in height, dbh and basal area. Fertigation in six splits a year increased the total biomass of teak by 36 percent as compared two splits of fertigation or soil application in a year. Both height and dbh were significantly higher with fertigation in six splits as compared to soil application. Ibteraction effect was non-significant.