Physiological responses of Chandrashura (Lepidium sativum L.) to salt stress
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Date
2004
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CCSHAU
Abstract
The present study entitled “Effect of plant density and fertilizers on
seed production of brinjal cv. HLB- 25” was carried out at Vegetable Research Farm of
CCS Haryana Agricultural University, Hisar during autumn-winter season of 2003-04.
The experiment comprising three spacing viz., S1 (75 × 60 cm), S2 (60×60cm), S3
(60×50cm) and six fertilizer levels viz., F1 (recommended dose of NPK, 100:50:25
kg/ha), F2 (recommended dose of NPK + Azotobacter), F3 (75% of recommended dose
of NPK), F4 (75% recommended dose of NPK + Azotobacter), F5 (50% of
recommended dose of NPK), and F6 (50% of recommended dose of NPK +
Azotobacter) was laid out in a factorial randomized block design with three
replications and 3×3m plot size. Five competitive plants were randomly selected from
each experimental treatment to record data on various parameters, which were
influenced significantly by various spacing and fertility levels.The plant height increased significantly with decreasing level of spacing,
whereas, days to 50% flowering and fruit ripening, total plant biomass, canopy area,
fruit length and diameter, average fruit weight, fruits per plant, seed weight per fruits,
seed yield per plant, test weight, seed germination and seed vigour index increased
significantly with increasing spacing levels. Plant height, total plant biomass and
canopy area, fruit length and diameter, average fruit weight, and number of fruits
improved significantly with increasing levels of fertility. Similarly, results also showed
significant differences for seed yield per plant and per hectare, test weight, seed
germination, and seed vigour index. However, the increased fertility levels delayed the
flowering and fruit ripening. Significant differences were observed in relation to
interaction between spacing and fertility levels for plant height, total plant biomass,
fruits per plant, and seed yield per plant and per hectare, which were absent for all other
characters investigated. The study suggested that for getting maximum seed yield of
brinjal cv. HLB- 25 the crop should be planted at 60x60 cm spacing and supplied with
100:50:25 kg/ha of NPK along with seedling inoculation with Azotobacter.