Effect of Different Levels of Nitrogen Applied as Foliar Spray on the Yield of Mature Tea Under Different Agro-Ecological Conditions

PAKISTAN AGRICULTURAL RESEARCH COUNCIL
NATIONAL TEA RESEARCH INSTITUTE
Shinkiari, Mansehra
***

Dated: 09-02-2012

Sub: Research Paper for publication

Find enclosed herewith a paper entitled “EFFECT OF DIFFERENT LEVELS OF NITROGEN APPLIED AS FOLIAR SPRAY ON THE YIELD OF MATURE TEA UNDER DIFFERENT AGRO-ECOLOGICAL CONDITIONS.” for publication in your reputed Journal. Hard copy of the paper will be sent by post.

It is requested that above mentioned paper may please be published in next coming issue of your Journal.

Submitted for further necessary action please.

Sd/- Shamsul Islam) SO, NTRI
Managing Editor,
Directorate of Publication, PARC

EFFECT OF DIFFERENT LEVELS OF NITROGEN APPLIED AS FOLIAR SPRAY ON THE YIELD OF MATURE TEA UNDER DIFFERENT AGRO-ECOLOGICAL CONDITIONS.

Shamsul Islam*,Qamar-uz-Zaman*,Fayaz Ahmad*, Sohail Aslam* ,Sajjad Hussain* and F.S.Hamid*

ABSTRACT

A study was conducted during 2009-10 at three locations of Districts Mansehra & Battagram to evaluate the impact of different levels of Nitrogen(Ammonium sulphate) applied by foliar application method on the yield of mature tea bushes. The mature tea gardens selected for the study were at National Tea Research Institute, farmer’s field in Tehsil Oghi (District Mansehra) & Kuza Banda (District Battagram). Basal doses of P and K were applied in the form of Di-Ammonium Phosphate and Sulphate of Potash respectively @ 30 kg acre-1 each while N was applied in the form of Ammonium Sulphate as foliar spray in three split doses. The experiment was laid in Randomized Complete Block Design with split plot arrangements replicated three times. Different levels of nitrogen were 0, 30, 60, 90 and 120 kg acre-1. It was observed that nitrogen level@120 kg/acre increased fresh leaves yield significantly (2199 to3768 kg/acre),made

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