Effect of nutrient levels and nutrient schedules on physiological parameters and grain yield of upland rice intercropped in coconut garden
Journal Title: Journal of Applied and Natural Science - Year 2009, Vol 1, Issue 1
Abstract
The experiment was conducted at Coconut Research Station, Balaramapuram with an objective to study the effect of nutrient levels and nutrient schedules on physiological parameters and grain yield of upland rice (MO 21- Prathyasa rice variety) intercropped in coconut. Field experiment was conducted in factorial randomized block design with nutrient levels as first factor and nutrient schedules as second factor in three replications. Nutrient levels had significant effect on the physiological parameters. Among the nutrient levels rested, NPK applied @ 120:30:60 recorded higher total chlorophyll (2.803 mg g-1) and chlorophyll b content (1.508 mg g-1), crop growth rate (CGR) (11.23 g m-2 day-1) and relative growth rate (RGR) (0.056 g g-1 day-1) as compared to lower nutrient level tested, NPK @ 60:30:30 kg ha-1. Nutrient schedules also had significant effect (P=0.05) on the physiological parameters viz., total chlorophyll, chlorophyll a, chlorophyll b, CGR and RGR and the treatment receiving 0.2 per cent zinc sulphate and 0.04 per cent sodium borate spray at 45 DAS recorded higher chlorophyll content, RGR and CGR. Though the higher nutrient level, NPK @ 120:30:45 kg ha-1 recorded higher values for physiological parameters, it recorded the lowest grain yield. Application of NPK @ 90:30:45 kg ha-1 recorded the highest grain yield and it was followed by NPK applied @ 70:30:35 kg ha-1. Among the nutrient schedules, N applied as three equal splits, P as basal and K in two equal splits along with foliar spray of zinc sulphate 0.2 per cent and sodium borate 0.04 per cent at 45 DAS recorded the highest grain yield (3.25 t ha-1). The study clearly revealed that excessive vegetative growth is not a desirable parameter for higher grain yield.
Authors and Affiliations
Sheeja K Raj, B. M. Suman, K. Prathapan, Elizabeth K Syriac, N. V. Radhakrishnan
Keywords
Related Articles
- EP ID EP377628
- DOI 10.31018/jans.v10i3.1822
- Views 103
- Downloads 0
Compatibility of biocontrol agents and N fixing organisms with post emergence pre-mix herbicide-bispyribac sodium + metamifop 14 % SE
The experiments were conducted in vitro in the Agricultural Microbiology laboratory at College of Agricul-ture, Vellayani, Thiruvananthapuram, Kerala, India to evaluate the compatibility of biocontrol agents Pseudomonas...
Economic evaluation of biorational and conventional insecticides for the control of maize stem borer Chilo partellus (Swinhoe) in Zea mays
Maize borer, Chilo partellus (Swinhoe) is the chief limiting factor for higher corn production. Field trials to assess the efficacy of different insecticides against C. partellus were carried in district Ropar, Punjab. I...
Seasonal variation in phytoplankton of Tadoba lake, Tadoba Andhari Tiger Reserve (TATR), Distt. Chandrapur (MS), India
Tadoba lake is the major lake in Tadoba Andhari Tiger Reservoir (TATR) in the Chandrapur district, in eastern Maharashtra which represent a unique habitat for wildlife in central India and oldest National Park of the sta...
Growth, yield attributes, yield and economics of winter popcorn (Zea mays everta Sturt.) as influenced by planting time fertility level and plant population under late sown condition
The field experiment was laid out in split plot design with three replications, assigning in 27 treatment combinations i.e. three sowing dates of Pop corn (Zea mays everta Sturt.)cv. V.L. Amber (15 Dec, 30 Dec and 15 Jan...
Effect of different growing media on the rooting of pomegranate (Punica granatum L.) cv. 'Phulearakta' cuttings
To identify the most efficient growing medium for root and shoot development in stem cuttings of pomegranate cv. ‘Phulearakta’ under arid conditions, a greenhouse experiment was conducted in randomized complete block des...