EFFECT OF CONTINUOUS APPLICATION OF FERTILIZERS AND AMENDMENTS ON PRODUCTIVITY, QUALITY OF MAIZE (Zea mays L.) AND SOIL HEALTH IN AN ACID ALFISOL
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Date
2019-06
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CSKHPKV, Palampur
Abstract
The prresentt iinvesttiigattiion was carrrriied outt iin an on--goiing llong--tterrm fferrttiilliizerr
experriimentt,, iiniittiiatted durriing 1972 att experriimenttall ffarrm off Deparrttmentt off Soiill Sciience,,
CSK HPKV Pallampurr,, tto sttudy tthe effffectt off conttiinuous applliicattiion off fferrttiilliizerrs and
amendmentts on prroducttiiviitty,, qualliitty off maiize ((Zea mays L..)) and soiill healltth iin an aciid
Allffiisoll underr maiize--wheatt crroppiing systtem.. The experriimentt consiistted off elleven
ttrreattmentts.. The soiill off tthe experriimenttall siitte was siilltt lloam and cllassiiffiied ttaxonomiicalllly as
Typiic Haplludallff.. Soiill samplles,, collllectted ffrrom ttwo deptths viiz..,, 0--0..15 and 0..15--0..30 m
afftterr tthe harrvestt off maiize ((khariiff 2018)),, werre anallysed fforr detterrmiinattiion off diifffferrentt
physiicall ((bullk densiitty,, parrttiiclle densiitty,, porrosiitty and watterr holldiing capaciitty)),, chemiicall
((pH,, SOC,, avaiillablle N,, P,, K,, Ca,, Mg,, Fe,, Mn,, Zn and Cu)) and biiollogiicall parrametterrs
((MBC,, MBN and dehydrrogenase acttiiviitty)).. Grraiin and sttoverr samplles werre allso collllectted
and anallyzed tto callcullatte nuttrriientt upttake and assess grraiin qualliitty parrametterrs.. Conttiinuous
applliicattiion off fferrttiilliizerrs and amendmentts fforr fforrtty--siix yearrs siigniiffiicanttlly iinfflluenced tthe
yiielld and nuttrriientt upttake by maiize.. The ttrreattmentt comprriisiing 100 perr centt NPK + FYM
rrecorrded tthe hiighestt grraiin (46..47 q ha--1) and sttoverr yiielld (77..00 q ha--1) and nuttrriientt
upttake and was att parr wiitth 100 perr centt NPK + lliime.. Omiissiion off S and K decrreased tthe
grraiin yiielld by 55..1 and 52..6 perr centt,, rrespecttiivelly,, wherreas conttiinuous applliicattiion off N
allone rresulltted iin zerro yiielld.. IInttegrrattiion off FYM and 100 perr centt NPK iimprroved tthe
qualliitty off maiize grraiin and rrecorrded hiighestt vallue off crrude prrotteiin,, crrude ffatt,, crrude ffiibrre,,
carrbohydrrattes,, sttarrch,, rreduciing and non--rreduciing sugarr,, ash and llowestt moiistturre conttentt..
Addiittiion off manurre orr lliime allong wiitth rrecommended dose off fferrttiilliizerrs iimprroved tthe soiill
healltth iin tterrms off physiicall,, chemiicall and biiollogiicall prroperrttiies off soiill.. Diifffferrentt soiill
healltth parrametterrs werre siigniiffiicanttlly and posiittiivelly corrrrellatted wiitth grraiin and sttoverr yiielld
and qualliitty ttrraiitts off maiize exceptt bullk densiitty whiich was negattiivelly corrrrellatted.