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Studies on nitrogen application frequency in drip irrigated potato

KrishiKosh

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Title Studies on nitrogen application frequency in drip irrigated potato
 
Creator Vikram
 
Contributor Bhatia, A.K.
 
Subject Nitrogen, Fertigation, Potatoes, Yields, Fungi, Irrigation, Planting, Grading, Nutrients, Area
 
Description The present investigation entitled “Studies on nitrogen application frequency in drip irrigated
potato” was carried out at Research Farm of the Department of Vegetable Science, CCS Haryana Agricultural
University, Hisar during winter season of 2014-15. The experiment comprising of three fertigation frequency
(Fertigaton at every 3
rd
(F
1
), 6
th
(F
2
) and 9
th
(F
3
) day) and four nitrogen levels (Nitrogen @ 90 (N
1
), 120 (N
2
), 150 (N
3
) and
180 (N
4
) kg/ha) was laid out in a Randomized Block Design with three replication.
The per cent plant emergence at 30 DAP, plant height at 60 DAP, number of shoots per hill at 30, 60 and 90
DAP, leaf area index at 30,60 and 90 DAP, foliage weight, number of tuber /m
2
(>50-75g and >75g grade), yield of
tuber/m
2
(>50-75g and >75g grade), total tuber yield, biological yield, marketable yield, harvest index, removal of
nitrogen, phosphorus and potassium , nitrogen use efficiency and water use efficiency were significantly higher when
fertigation applied at every 3
rd
day (F
1
). However, number of tuber /m
2
(up to 25g, >25-50g grade), yield of tuber/m
2
(up
to 25g and >25-50g grade) and black scurf incidence were maximum in F3
(fertigation at every 9
th
day).
Nitrogen levels exhibited significant difference for growth and yield. The maximum value for per cent plant
emergence at 30 DAP, plant height at 60 and 90 DAP, number of shoots per hill at 60 DAP, leaf area index at 30 and 90
DAP, foliage weight, number of tuber/m
2
(>50-75g and >75g), yield of tuber/m
2
(>50-75g and >75g), total tuber yield,
biological yield, marketable yield, harvest index, removal of nitrogen, phosphorus and potassium, nitrogen use efficiency
and water use efficiency were maximum with the application of nitrogen @120 kg/ha (N2
). However, number of tuber /m
2
(up to 25g, >25-50g), yield of tuber/m
2
(up to 25g and >25-50g) and black scurf incidence were maximum with N4
(nitrogen @180 kg/ha).
Interaction effect of fertigation frequency and nitrogen levels showed remarkable variation. The maximum leaf
area index at 30 DAP, number of tuber/m
2
(>50-75g and >75g), total tuber yield, biological yield, marketable yield,
nutrient use efficiency and water use efficiency with F
1N2
(fertigation at every 3
rd
day with nitrogen @120 kg/ha).
However, number of tuber (up to 25g and >25-50g) was found maximum with F3N4
(fertigation at every 9
th
day with
nitrogen @180 kg/ha) treatment combination. When fertigation applied at every 3
rd
day with the application of nitrogen
@120 kg/ha was found significantly superior to all other treatments combination.
 
Date 2016-10-22T13:57:12Z
2016-10-22T13:57:12Z
2016
 
Type Thesis
 
Identifier http://krishikosh.egranth.ac.in/handle/1/81398
 
Language en
 
Format application/pdf
 
Publisher CCSHAU