STUDIES ON DIFFERENT SOURCES AND DOSES OF FERTILIZER NUTRIENTS ON TOMATO, SOIL PROPERTIES AND NUTRIENT UPTAKE IN EASTERN DRY ZONE OF KARNATAKA
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Date
2019-08-09
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UNIVERSITY OF AGRICULTURAL SCIENCES GKVK, BANGALORE
Abstract
A field experiment entitled “Studies on different sources and doses of fertilizer
nutrients on tomato, soil properties and nutrient uptake in eastern dry zone of Karnataka”
was conducted in the STCR field during rabi/summer 2018. The experiment was laid out
in a randomised complete block design with eight treatments and three replications. The
results revealed that STCR approach for a targeted yield of 80 t ha-1 irrespective of
different forms of complex fertilizer recorded higher growth, yield, nutrient uptake (plant
and fruit) and nutrient use efficiency in tomato crop. Torrent coated complex (10:26:26)
fertilizer treatments irrespective of different approaches of fertilizer nutrient application
helped in achieving numerically higher growth, yield and yield parameters in tomato crop
compared to respective normal complex (10:26:26) fertilizer treatments. The results
clearly indicated that STCR treatment with torrent coated complex (10:26:26) fertilizer
recorded higher fruit yield (89.81 t ha-1) and dry matter yield (43.91 q ha-1). Nitrogen,
phosphorus and potassium uptake in shoot (100.58, 15.36 and 92.68 kg ha-1 respectively)
and fruit (27.18, 4.30 and 29.26 kg ha-1 respectively) was also maximum in STCR
treatment with torrent coated complex (10:26:26) fertilizer. The same treatment also
recorded higher Apparent Recovery Efficiency (ARE) of nitrogen (0.20 kg kg-1),
phosphorus (0.32 kg kg-1), potassium (0.47 kg kg-1), higher Agronomic Nutrient Use
Efficiency (ANUE) of phosphorus (1705.03 kg kg-1), potassium (342.12 kg kg-1) and
higher Response Yard Stick (RYS) (94.29 kg kg-1).