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N. K. Tiwari ¹, S. F. A Zaidi ², Chandan Kumar Singh ³, Rahul Kumar Singh ⁴

Affiliations
1 Department of Extension Education, N.D. University of Agriculture and Technology, Narendra Nagar, Kumarganj, Faizabad (U.P.), IN
2 Department of Extension Education, N.D. University of Agriculture and Technology, Narendra Nagar, Kumarganj, Faizabad (U.P.), IN
3 Department of Soil Science, N.D. University of Agriculture and Technology, Narendra Nagar, Kumarganj, Faizabad (U.P.), IN
4 Department of Plant Pathology, N.D. University of Agriculture and Technology, Narendra Nagar, Kumarganj, Faizabad (U.P.), IN

Abstract

The experiment was conducted during Kharif season of 2011-12 and 2012-13 to study the effect of split application of NPK on fertilizer use efficiency, nutrient availability and yield of hybrid rice in partially reclaimed salt affected soil at Student Instructional Farm of Narendra Deva University of Agriculture and Technology, Kumarganj, Faizabad, U.P. The experiment was laid out in RBD comprising of ten treatments with three replication as T₁ control, T₂ NPK (100% RDF) Recommended practices (RP), T₃ NPK (100% RDF) as N 1/3(7DAT+MT+ PI) P and K basal, T₄ NPK (100% RDF) N and K recommended P (3/4 B+1/3 PI), T₅ NPK (100% RDF) N 1/3(7DAT+MT+ PI) K (3/4 B+1/3 PI) and P RP, T₆ NPK (100% RDF) N 1/3(7DAT+MT+ PI) P and K 1/3 (B+MT+PI), T₇ NPK (75 % RDF) N 1/3(7DAT+MT+ PI) P and K basal, T₈ NPK (75% RDF) N and K RP and P 1/3 (B+MT+PI), T₉ NPK (75% RDF) N and P RP and K 1/3 (B+MT+PI) and T₁₀ NPK (75% RDF) N1/3 (7DAT+MT+PI) P and K1/3 ( B+MT+PI) the hybrid rice variety Arize-6444 was used for the experiment. The split application of NPK (100%RDF) N 1/3( 7DAT+MT+ PI) P and K 1/3 (B+MT+PI) produced highest growth parameters, yield attributing parameters grain (7.35 t ha^-1), straw (9.70 t ha^-1) yield and uptake of NPK (172.78, 39.04 and 153.68 kg ha^-1) was significantly superior over the rest of all treatments. Significantly at par, yield attributes gain yield, nutrient and protein content and nutrient uptake were recorded by T₁₀ (75% NPK-RDF with split application) and T₂ (100% NPK-RDF applied as recommended practices). This way 25% NPK could be saved by spliting NPK without loosing yield.

Keywords

Spliting, NPK Uptake, Availability of NPK, Soil Health.

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Chandan Kumar Singh ¹, Savita Gupta ¹, N. K. Tiwari ¹, Dharmendra Singh ¹

Affiliations
1 Department of Plant Pathology, N.D. University of Agriculture and Technology, Kumarganj, Faizabad (U.P.), IN

Abstract

Spot blotch caused by Bipolaris sorokiniana (Sacc.) Shoem is most important disease of wheat in North Eastern plain zones (NEPZ) representing warm and humid climate in India. It is also increasing in North Western plains zones (NWPZ), due to climate changes and causes considerable losses in susceptible varieties. A field study was conducted during Rabi, 2011-12 and 2012-13 crop seasons at Main Experiment Station, NDUA and T, Kumarganj, Faizabad to test the resistance of 250 genotypes against Bipolaris sorokiniana under artificial epiphytotics conditions. Each genotype was sown in last week of November in single row of one meter length. Variety Raj 4015 was used as check and was sown after every 20 genotypes. Pure culture of pathogenwas inoculatedon genotypesby using cleaned sprayer, at evening. Disease data was recorded using double digit scale based on per cent blighted area on flag leaf and one leaf just below. Out of 250 genotypes, one namely KARAWANI/4NIF-3/SOTY/NAD63/CHRIS was found immune, 20 genotypes were found resistant, 146 were moderately resistant, 75 were moderately susceptible and 8 were found susceptible against spot blotch disease of wheat.

Keywords

Wheat, Spot Blotch, B. sorokiniana, Screening.

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