INTERVENTIONS IN NUTRIENT MANAGEMENT FOR ENHANCEMENT OF GRAIN YIELD AND QUALITY OF POPULAR RICE VARIETIES
KrishiKosh
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Title |
INTERVENTIONS IN NUTRIENT MANAGEMENT FOR ENHANCEMENT OF GRAIN YIELD AND QUALITY OF POPULAR RICE VARIETIES
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Creator |
PADMAVATHI, J
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Contributor |
SUBBAIAH, G
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Subject |
rice, developmental stages, yields, grain, zinc, farmyard manure, textural soil types, clay, organic compounds, productivity
NUTRIENT, GRAIN, RICE |
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Description |
A field experiment entitled “Interventions in nutrient management for enhancement of grain yield and quality of popular rice varieties” was conducted at Agricultural College Farm, Bapatla on a sandy clay loam soil during kharif season of 2010-11. The experiment consisted of two varieties V1: BPT 5204 (Samba Mahsuri), V2: NLR 33892 (Pardhiva) and seven treatments viz., Recommended NPK only (T1), T1 + 5 t ha-1 FYM (T2), T1 + 50 kg ZnSO4 ha-1 as soil application (T3), T1 + 2% urea spray at flowering stage (T4), T1 + 0.5% ZnSO4 spray at flowering stage (T5), T1 + 2% urea + 0.5% ZnSO4 spray at flowering stage(T6), T1 + 2% ZnSO4 enrichment of third split application of nitrogen(T7).The experiment was laid out in a Randomized Block Design with Factorial Concept with three replications. The findings of the experiment revealed that the growth parameters such as plant height, number of tillers m -2, drymatter production and chlorophyll content (SPAD reading) measured at different intervals were significantly influenced by varieties and treatments. However, interaction between varieties and treatments was non significant. Significantly taller plants were produced with NLR 33892 variety and higher drymatter accumulation, whereas, more number of tillers were with BPT 5204. There was a significant improvement in all the growth parameters viz., plant height, number of tillers m -2, drymatter production and chlorophyll content with soil application of 50 kg ZnSO4 ha-1, which was however, comparable with combined application of 2% urea and 0.5% ZnSO4 spray at flowering stage. The highest number of total (238) and filled grains panicle-1 (224), test weight (18.2 g), grain yield (5052 kg ha-1), harvest index (47.1), nitrogen (108.8 kg ha-1) and zinc uptake (1027.1 g ha-1) were observed with NLR 33892, whereas, the maximum productive tillers m -2 (337), straw yield (6261 kg ha-1) was with BPT 5204. Significant increase in yield attributing characters, grain and straw yields (5859 kg ha-1 and 6406 kg ha-1), harvest index (47.8), nitrogen and zinc uptake (118.5 kg ha-1 and 1106.8 g ha-1) were with soil application of 50 kg ZnSO4 ha-1, which was however, comparable with combined application of 2% urea and 0.5% ZnSO4 spray at flowering stage. Significantly better quality parameters of rice grain such as protein, amylose contents, milling per cent, hulling per cent, head rice recovery, volume expansion ratio were noticed with the variety BPT 5204 and combined application of 2% urea and 0.5% ZnSO4 spray at flowering stage, which was however, comparable with soil application of 50 kg ZnSO4 ha-1. However, interaction between varieties and treatments was non significant. The highest gross returns, net returns and returns per rupee investment were registered with NLR 33892. Among different treatments, the highest gross and net returns (Rs. 56127 ha-1) were obtained with the soil application of 50 kg ZnSO4 ha-1. Whereas, the returns per rupee investment was the maximum with conjunctive use of 2% urea and 0.5% ZnSO4 spray at flowering stage. From the present investigation, it can be concluded that under sandy clay loam soils of Bapatla, NLR 33892 performed better in giving the maximum yield, net returns and returns per rupee investment. Soil application of 50 kg ZnSO4 ha-1 and combined application of 2% urea and 0.5% ZnSO4 spray at flowering stage were found to be better, which resulted in higher productivity, better economic returns and improved quality characteristics of rice |
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Date |
2016-06-03T09:19:51Z
2016-06-03T09:19:51Z 2011 |
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Type |
Thesis
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Identifier |
http://krishikosh.egranth.ac.in/handle/1/66674
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Language |
en
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Relation |
D9013;
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Format |
application/pdf
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Publisher |
ACHARYA N. G. RANGA AGRICULTURAL UNIVERSITY
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