Effect of varying levels of Phosphorus, Zinc and Mycorrhizae on growth and nutrient uptake in Capsicum (Capsicum annuum L.)
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Date
2017-12
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UHF,NAUNI
Abstract
ABSTRACT
The studies entitled, “Effect of varying levels of Phosphorus, Zinc and Mycorrhizae on
growth and nutrient uptake in Capsicum (Capsicum annuum L.)” were carried out in the net
house of the Department of Soil Science & Water Management, Dr Y S Parmar University of
Horticulture and Forestry, Nauni, Solan, Himachal Pradesh, during the years 2016 and 2017. Twenty
four treatment combinations arranged in a completely randomized design comprising four levels of
phosphorus viz. No application of Phosphorus (P0), P1, P2 and P3 (Phosphorus equivalent to 50, 75
and 100% recommended dose of P); three levels of Zn i.e. Zn1, Zn2 and Zn3 (equivalent to 50, 75 and
100% recommended dose of Zn) and two levels of Mycorrhizal inoculation i.e. I0 (without
inoculation) and I1 (with inoculation) were replicated three times. The results revealed that the
application of Phosphorus, Zinc and Mycorrhiza levels had no significant effect on total plant
biomass, flowering and fruit yield and quality characters of capsicum. Maximum nitrogen content in
above ground parts of plants (10.08% and 9.91%) were observed in P3Zn2I1, Phosphorus (1.20% and
1.19%) in P3Zn0I1 and Potassium (11.30% and 11.55%) in P0Zn2I in 2016 and 2017, respectively.
Maximum Fe (448.57 mg kg-1 and 500.14 mg kg-1) and Cu (48.00 mg kg-1 and 53.45 mg kg-1) were
observed in P0Zn0I1, whereas higher total Mn content (263.00 mg kg-1 and 260.06 mg kg-1) and
higher total Zn content (84.77 mg kg-1 and 92.40 mg kg-1) were observed in P0Zn2I1 in 2016 and
2017. The results clearly confirm the P- Zn interaction with Zn contents minimum at highest level of
P application, which were overcome by the additional application of Zn as well as by inoculation
with AM fungi. On the other hand the Zn content in roots increased with P and Zn application which
was explained by the formation of P- Zn complexes in the roots. The nutrient uptake by plants was
found maximum at highest levels of fertilizer application and with AM inoculation. The soil analysis
revealed that maximum OC (1.51%) was observed in P2Zn1I1. The soil properties, although little
affected, were found to improve with recommended application rates and inoculation, mainly
because of residual effects of applied phosphorus and improvement in soil health. The genera
Glomus was found to be the dominant.
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